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Andrzej Krzemienski
2018-07-03 23:06:28 +02:00
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2
doc/00_optional.qbk
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@ -2,7 +2,7 @@
[quickbook 1.4] [quickbook 1.4]
[authors [Cacciola Carballal, Fernando Luis]] [authors [Cacciola Carballal, Fernando Luis]]
[copyright 2003-2007 Fernando Luis Cacciola Carballal] [copyright 2003-2007 Fernando Luis Cacciola Carballal]
[copyright 2014-2017 Andrzej Krzemieński] [copyright 2014-2018 Andrzej Krzemieński]
[category miscellaneous] [category miscellaneous]
[id optional] [id optional]
[dirname optional] [dirname optional]

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doc/27_ref_optional_synopsis.qbk
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@ -179,9 +179,19 @@ They are empty, trivially copyable classes with disabled default constructor.
template<class F> T value_or_eval( F f ) const& ; ``[link reference_optional_value_or_call __GO_TO__]`` template<class F> T value_or_eval( F f ) const& ; ``[link reference_optional_value_or_call __GO_TO__]``
template<class F> T value_or_eval( F f ) && ; ``[link reference_optional_value_or_call_move __GO_TO__]`` template<class F> T value_or_eval( F f ) && ; ``[link reference_optional_value_or_call_move __GO_TO__]``
template<class F> auto map( F f ) const& -> ``['see below]``; ``[link reference_optional_map __GO_TO__]``
template<class F> auto map( F f ) & -> ``['see below]``; ``[link reference_optional_map __GO_TO__]``
template<class F> auto map( F f ) && -> ``['see below]``; ``[link reference_optional_map_move __GO_TO__]``
template<class F> auto flat_map( F f ) const& -> ``['see below]``; ``[link reference_optional_flat_map __GO_TO__]``
template<class F> auto flat_map( F f ) & -> ``['see below]``; ``[link reference_optional_flat_map __GO_TO__]``
template<class F> auto flat_map( F f ) && -> ``['see below]``; ``[link reference_optional_flat_map_move __GO_TO__]``
T const* get_ptr() const ; ``[link reference_optional_get_ptr __GO_TO__]`` T const* get_ptr() const ; ``[link reference_optional_get_ptr __GO_TO__]``
T* get_ptr() ; ``[link reference_optional_get_ptr __GO_TO__]`` T* get_ptr() ; ``[link reference_optional_get_ptr __GO_TO__]``
bool has_value() const noexcept ; ``[link reference_optional_operator_bool __GO_TO__]``
explicit operator bool() const noexcept ; ``[link reference_optional_operator_bool __GO_TO__]`` explicit operator bool() const noexcept ; ``[link reference_optional_operator_bool __GO_TO__]``
bool operator!() const noexcept ; ``[link reference_optional_operator_not __GO_TO__]`` bool operator!() const noexcept ; ``[link reference_optional_operator_not __GO_TO__]``
@ -234,7 +244,6 @@ They are empty, trivially copyable classes with disabled default constructor.
optional& operator = ( none_t ) noexcept ; ``[link reference_optional_ref_assign_none_t __GO_TO__]`` optional& operator = ( none_t ) noexcept ; ``[link reference_optional_ref_assign_none_t __GO_TO__]``
optional& operator = ( optional const& rhs ) noexcept; ``[link reference_optional_ref_copy_assign __GO_TO__]`` optional& operator = ( optional const& rhs ) noexcept; ``[link reference_optional_ref_copy_assign __GO_TO__]``
template<class U> optional& operator = ( optional<U&> const& rhs ) noexcept ; ``[link reference_optional_ref_assign_optional_U __GO_TO__]`` template<class U> optional& operator = ( optional<U&> const& rhs ) noexcept ; ``[link reference_optional_ref_assign_optional_U __GO_TO__]``
@ -254,8 +263,14 @@ They are empty, trivially copyable classes with disabled default constructor.
template<class F> T& value_or_eval( F f ) const ; ``[link reference_optional_ref_value_or_eval __GO_TO__]`` template<class F> T& value_or_eval( F f ) const ; ``[link reference_optional_ref_value_or_eval __GO_TO__]``
template<class F> auto map( F f ) const -> ``['see below]``; ``[link reference_optional_ref_map __GO_TO__]``
template<class F> auto flat_map( F f ) const -> ``['see below]``; ``[link reference_optional_ref_flat_map __GO_TO__]``
T* get_ptr() const noexcept ; ``[link reference_optional_ref_get_ptr __GO_TO__]`` T* get_ptr() const noexcept ; ``[link reference_optional_ref_get_ptr __GO_TO__]``
bool has_value() const noexcept ; ``[link reference_optional_ref_operator_bool __GO_TO__]``
explicit operator bool() const noexcept ; ``[link reference_optional_ref_operator_bool __GO_TO__]`` explicit operator bool() const noexcept ; ``[link reference_optional_ref_operator_bool __GO_TO__]``
bool operator!() const noexcept ; ``[link reference_optional_ref_operator_not __GO_TO__]`` bool operator!() const noexcept ; ``[link reference_optional_ref_operator_not __GO_TO__]``

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@ -685,6 +685,65 @@ __SPACE__
__SPACE__ __SPACE__
[#reference_optional_map]
[: `template<class F> auto optional<T>::map(F f) const& -> `['see below]` ;`]
[: `template<class F> auto optional<T>::map(F f) & -> `['see below]` ;`]
* [*Effects:] `if (*this) return f(**this); else return none;`
* [*Notes:] The return type of these overloads is `optional<decltype(f(**this))>`. On compilers that do not support ref-qualifiers on member functions, these two (as well as the next one) overloads are replaced with good old const and non-const overloads.
* [*Example:]
``
auto length = [](const string& s){ return s.size(); };
optional<string> o1 {}, o2 {"cat"};
optional<size_t> os1 = o1.map(length), os2 = o2.map(length);
assert ( !os1 ) ;
assert ( os2 ) ;
assert ( *os2 == 3 ) ;
``
__SPACE__
[#reference_optional_map_move]
[: `template<class F> auto optional<T>::map(F f) && -> `['see below]` ;`]
* [*Effects:] `if (*this) return f(std::move(**this)); else return none;`
* [*Notes:] The return type of this overload is `optional<decltype(f(istd::move(**this)))>`.
__SPACE__
[#reference_optional_flat_map]
[: `template<class F> auto optional<T>::flat_map(F f) const& -> `['see below]` ;`]
[: `template<class F> auto optional<T>::flat_map(F f) & -> `['see below]` ;`]
* [*Requires:] The return type of expression `f(**this)` is `optional<U>` for some object or reference type `U`.
* [*Effects:] `if (*this) return f(**this); else return none;`
* [*Notes:] The return type of these overloads is `optional<U>`. On compilers that do not support ref-qualifiers on member functions, these two (as well as the next one) overloads are replaced with good old const and non-const overloads.
* [*Example:]
``
optional<char> first_char(const string& s) {
return s.empty() ? none : optional<char>(s[0]);
};
optional<string> o1 {}, o2 {"cat"};
optional<char> os1 = o1.flat_map(first_char), os2 = o2.flat_map(first_char);
assert ( !os1 ) ;
assert ( os2 ) ;
assert ( *os2 == 'c' ) ;
``
__SPACE__
[#reference_optional_flat_map_move]
[: `template<class F> auto optional<T>::flat_map(F f) && -> `['see below]` ;`]
* [*Requires:] The return type of expression `f(std::move(**this))` is `optional<U>` for some object or reference type `U`.
* [*Effects:] `if (*this) return f(std::move(**this)); else return none;`
* [*Notes:] The return type of this overload is `optional<U>`.
__SPACE__
[#reference_optional_get_value_or_value] [#reference_optional_get_value_or_value]
[: `T const& optional<T>::get_value_or( T const& default) const ;`] [: `T const& optional<T>::get_value_or( T const& default) const ;`]
@ -754,6 +813,7 @@ __SPACE__
[#reference_optional_operator_bool] [#reference_optional_operator_bool]
[: `explicit optional<T>::operator bool() const noexcept ;`] [: `explicit optional<T>::operator bool() const noexcept ;`]
[: `bool optional<T>::has_value() const noexcept ;`]
* [*Returns:] `get_ptr() != 0`. * [*Returns:] `get_ptr() != 0`.
* [*Notes:] On compilers that do not support explicit conversion operators this falls back to safe-bool idiom. * [*Notes:] On compilers that do not support explicit conversion operators this falls back to safe-bool idiom.
@ -1033,6 +1093,21 @@ __SPACE__
__SPACE__ __SPACE__
[#reference_optional_ref_map]
[: `template<class F> auto optional<T&>::map( F f ) const -> `['see below]`;`]
* [*Effects:] Equivalent to `if (*this) return f(**this); else return none;`.
* [*Remarks:] The return type of this function is `optional<decltype(f(**this))>`.
__SPACE__
[#reference_optional_ref_flat_map]
[: `template<class F> auto optional<T&>::flat_map( F f ) const -> `['see below]`;`]
* [*Requires:] The return type of expression `f(**this)` is `optional<U>` for some object or reference type `U`.
* [*Effects:] Equivalent to `if (*this) return f(**this); else return none;`.
* [*Remarks:] The return type of this function is `optional<U>`.
__SPACE__
[#reference_optional_ref_get_ptr] [#reference_optional_ref_get_ptr]
[: `T* optional<T&>::get_ptr () const noexcept;`] [: `T* optional<T&>::get_ptr () const noexcept;`]
* [*Returns:] `ref`. * [*Returns:] `ref`.
@ -1040,6 +1115,7 @@ __SPACE__
__SPACE__ __SPACE__
[#reference_optional_ref_operator_bool] [#reference_optional_ref_operator_bool]
[: `bool has_value() const noexcept;`]
[: `optional<T&>::operator bool () const noexcept;`] [: `optional<T&>::operator bool () const noexcept;`]
* [*Returns:] `bool(ref)`. * [*Returns:] `bool(ref)`.

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@ -11,6 +11,13 @@
[section:relnotes Release Notes] [section:relnotes Release Notes]
[heading Boost Release 1.68]
* Added member function `has_value()` for compatibility with `std::optional` ([@https://github.com/boostorg/optional/issues/52 issue #52]).
* Added member function `map()` for transforming `optional<T>` into `optional<U>` using a function of type `T -> U`.
* Added member function `flat_map()` for transforming `optional<T>` into `optional<U>` using a function of type `T -> optonal<U>`.
[heading Boost Release 1.67] [heading Boost Release 1.67]
* Fixed [@https://github.com/boostorg/optional/issues/46 issue #46]. * Fixed [@https://github.com/boostorg/optional/issues/46 issue #46].

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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Acknowledgements</title> <title>Acknowledgements</title>
<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css"> <link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
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<link rel="prev" href="relnotes.html" title="Release Notes"> <link rel="prev" href="relnotes.html" title="Release Notes">
@ -116,8 +116,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Dependencies and Portability</title> <title>Dependencies and Portability</title>
<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css"> <link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
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@ -77,8 +77,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

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<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Emplace operations in older compilers</title> <title>Emplace operations in older compilers</title>
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@ -76,8 +76,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

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<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Optional Reference Binding</title> <title>Optional Reference Binding</title>
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@ -93,8 +93,7 @@
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<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

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<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Quick Start</title> <title>Quick Start</title>
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@ -155,8 +155,7 @@
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<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Bypassing unnecessary default construction</title> <title>Bypassing unnecessary default construction</title>
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@ -61,8 +61,7 @@
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<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

5
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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Optional data members</title> <title>Optional data members</title>
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@ -80,8 +80,7 @@
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<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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5
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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Storage in containers</title> <title>Storage in containers</title>
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@ -50,8 +50,7 @@
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<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

5
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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Header &lt;boost/optional/bad_optional_access.hpp&gt;</title> <title>Header &lt;boost/optional/bad_optional_access.hpp&gt;</title>
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@ -49,8 +49,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

5
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<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
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@ -46,8 +46,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

5
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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
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@ -33,8 +33,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

5
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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Header &lt;boost/optional/optional_fwd.hpp&gt;</title> <title>Header &lt;boost/optional/optional_fwd.hpp&gt;</title>
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@ -52,8 +52,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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5
doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/detailed_semantics___free_functions.html
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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Detailed Semantics - Free Functions</title> <title>Detailed Semantics - Free Functions</title>
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@ -507,8 +507,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

47
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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Detailed Semantics - Optional References</title> <title>Detailed Semantics - Optional References</title>
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@ -407,6 +407,45 @@
is ill-formed. is ill-formed.
</li> </li>
</ul></div> </ul></div>
<p>
<span class="inlinemediaobject"><img src="../../../images/space.png" alt="space"></span>
</p>
<a name="reference_optional_ref_map"></a><div class="blockquote"><blockquote class="blockquote"><p>
<code class="computeroutput"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="keyword">auto</span> <span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&amp;&gt;::</span><span class="identifier">map</span><span class="special">(</span> <span class="identifier">F</span> <span class="identifier">f</span> <span class="special">)</span> <span class="keyword">const</span> <span class="special">-&gt;</span> </code><span class="emphasis"><em>see below</em></span><code class="computeroutput"><span class="special">;</span></code>
</p></blockquote></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<span class="bold"><strong>Effects:</strong></span> Equivalent to <code class="computeroutput"><span class="keyword">if</span> <span class="special">(*</span><span class="keyword">this</span><span class="special">)</span> <span class="keyword">return</span> <span class="identifier">f</span><span class="special">(**</span><span class="keyword">this</span><span class="special">);</span> <span class="keyword">else</span> <span class="keyword">return</span> <span class="identifier">none</span><span class="special">;</span></code>.
</li>
<li class="listitem">
<span class="bold"><strong>Remarks:</strong></span> The return type of this function
is <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="keyword">decltype</span><span class="special">(</span><span class="identifier">f</span><span class="special">(**</span><span class="keyword">this</span><span class="special">))&gt;</span></code>.
</li>
</ul></div>
<p>
<span class="inlinemediaobject"><img src="../../../images/space.png" alt="space"></span>
</p>
<a name="reference_optional_ref_flat_map"></a><div class="blockquote"><blockquote class="blockquote"><p>
<code class="computeroutput"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="keyword">auto</span> <span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&amp;&gt;::</span><span class="identifier">flat_map</span><span class="special">(</span>
<span class="identifier">F</span> <span class="identifier">f</span>
<span class="special">)</span> <span class="keyword">const</span>
<span class="special">-&gt;</span> </code><span class="emphasis"><em>see below</em></span><code class="computeroutput"><span class="special">;</span></code>
</p></blockquote></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<span class="bold"><strong>Requires:</strong></span> The return type of expression
<code class="computeroutput"><span class="identifier">f</span><span class="special">(**</span><span class="keyword">this</span><span class="special">)</span></code>
is <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">U</span><span class="special">&gt;</span></code>
for some object or reference type <code class="computeroutput"><span class="identifier">U</span></code>.
</li>
<li class="listitem">
<span class="bold"><strong>Effects:</strong></span> Equivalent to <code class="computeroutput"><span class="keyword">if</span> <span class="special">(*</span><span class="keyword">this</span><span class="special">)</span> <span class="keyword">return</span> <span class="identifier">f</span><span class="special">(**</span><span class="keyword">this</span><span class="special">);</span> <span class="keyword">else</span> <span class="keyword">return</span> <span class="identifier">none</span><span class="special">;</span></code>.
</li>
<li class="listitem">
<span class="bold"><strong>Remarks:</strong></span> The return type of this function
is <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">U</span><span class="special">&gt;</span></code>.
</li>
</ul></div>
<p> <p>
<span class="inlinemediaobject"><img src="../../../images/space.png" alt="space"></span> <span class="inlinemediaobject"><img src="../../../images/space.png" alt="space"></span>
</p> </p>
@ -422,6 +461,9 @@
<span class="inlinemediaobject"><img src="../../../images/space.png" alt="space"></span> <span class="inlinemediaobject"><img src="../../../images/space.png" alt="space"></span>
</p> </p>
<a name="reference_optional_ref_operator_bool"></a><div class="blockquote"><blockquote class="blockquote"><p> <a name="reference_optional_ref_operator_bool"></a><div class="blockquote"><blockquote class="blockquote"><p>
<code class="computeroutput"><span class="keyword">bool</span> <span class="identifier">has_value</span><span class="special">()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span></code>
</p></blockquote></div>
<div class="blockquote"><blockquote class="blockquote"><p>
<code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&amp;&gt;::</span><span class="keyword">operator</span> <span class="keyword">bool</span> <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&amp;&gt;::</span><span class="keyword">operator</span> <span class="keyword">bool</span>
<span class="special">()</span> <span class="keyword">const</span> <span class="special">()</span> <span class="keyword">const</span>
<span class="keyword">noexcept</span><span class="special">;</span></code> <span class="keyword">noexcept</span><span class="special">;</span></code>
@ -501,8 +543,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Detailed Semantics - Optional Values</title> <title>Detailed Semantics - Optional Values</title>
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@ -1471,6 +1471,126 @@
ref-qualifiers on member functions this overload is not present. ref-qualifiers on member functions this overload is not present.
</li> </li>
</ul></div> </ul></div>
<p>
<span class="inlinemediaobject"><img src="../../../images/space.png" alt="space"></span>
</p>
<a name="reference_optional_map"></a><div class="blockquote"><blockquote class="blockquote"><p>
<code class="computeroutput"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="keyword">auto</span> <span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">map</span><span class="special">(</span><span class="identifier">F</span> <span class="identifier">f</span><span class="special">)</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="special">-&gt;</span>
</code><span class="emphasis"><em>see below</em></span><code class="computeroutput"> <span class="special">;</span></code>
</p></blockquote></div>
<div class="blockquote"><blockquote class="blockquote"><p>
<code class="computeroutput"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="keyword">auto</span> <span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">map</span><span class="special">(</span><span class="identifier">F</span> <span class="identifier">f</span><span class="special">)</span> <span class="special">&amp;</span> <span class="special">-&gt;</span> </code><span class="emphasis"><em>see below</em></span><code class="computeroutput">
<span class="special">;</span></code>
</p></blockquote></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<span class="bold"><strong>Effects:</strong></span> <code class="computeroutput"><span class="keyword">if</span>
<span class="special">(*</span><span class="keyword">this</span><span class="special">)</span> <span class="keyword">return</span> <span class="identifier">f</span><span class="special">(**</span><span class="keyword">this</span><span class="special">);</span> <span class="keyword">else</span> <span class="keyword">return</span>
<span class="identifier">none</span><span class="special">;</span></code>
</li>
<li class="listitem">
<span class="bold"><strong>Notes:</strong></span> The return type of these overloads
is <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="keyword">decltype</span><span class="special">(</span><span class="identifier">f</span><span class="special">(**</span><span class="keyword">this</span><span class="special">))&gt;</span></code>.
On compilers that do not support ref-qualifiers on member functions,
these two (as well as the next one) overloads are replaced with good
old const and non-const overloads.
</li>
<li class="listitem">
<span class="bold"><strong>Example:</strong></span>
<pre class="programlisting"><span class="keyword">auto</span> <span class="identifier">length</span> <span class="special">=</span> <span class="special">[](</span><span class="keyword">const</span> <span class="identifier">string</span><span class="special">&amp;</span> <span class="identifier">s</span><span class="special">){</span> <span class="keyword">return</span> <span class="identifier">s</span><span class="special">.</span><span class="identifier">size</span><span class="special">();</span> <span class="special">};</span>
<span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">string</span><span class="special">&gt;</span> <span class="identifier">o1</span> <span class="special">{},</span> <span class="identifier">o2</span> <span class="special">{</span><span class="string">"cat"</span><span class="special">};</span>
<span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">size_t</span><span class="special">&gt;</span> <span class="identifier">os1</span> <span class="special">=</span> <span class="identifier">o1</span><span class="special">.</span><span class="identifier">map</span><span class="special">(</span><span class="identifier">length</span><span class="special">),</span> <span class="identifier">os2</span> <span class="special">=</span> <span class="identifier">o2</span><span class="special">.</span><span class="identifier">map</span><span class="special">(</span><span class="identifier">length</span><span class="special">);</span>
<span class="identifier">assert</span> <span class="special">(</span> <span class="special">!</span><span class="identifier">os1</span> <span class="special">)</span> <span class="special">;</span>
<span class="identifier">assert</span> <span class="special">(</span> <span class="identifier">os2</span> <span class="special">)</span> <span class="special">;</span>
<span class="identifier">assert</span> <span class="special">(</span> <span class="special">*</span><span class="identifier">os2</span> <span class="special">==</span> <span class="number">3</span> <span class="special">)</span> <span class="special">;</span>
</pre>
</li>
</ul></div>
<p>
<span class="inlinemediaobject"><img src="../../../images/space.png" alt="space"></span>
</p>
<a name="reference_optional_map_move"></a><div class="blockquote"><blockquote class="blockquote"><p>
<code class="computeroutput"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="keyword">auto</span> <span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">map</span><span class="special">(</span><span class="identifier">F</span> <span class="identifier">f</span><span class="special">)</span> <span class="special">&amp;&amp;</span>
<span class="special">-&gt;</span> </code><span class="emphasis"><em>see below</em></span><code class="computeroutput">
<span class="special">;</span></code>
</p></blockquote></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<span class="bold"><strong>Effects:</strong></span> <code class="computeroutput"><span class="keyword">if</span>
<span class="special">(*</span><span class="keyword">this</span><span class="special">)</span> <span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">move</span><span class="special">(**</span><span class="keyword">this</span><span class="special">));</span> <span class="keyword">else</span> <span class="keyword">return</span>
<span class="identifier">none</span><span class="special">;</span></code>
</li>
<li class="listitem">
<span class="bold"><strong>Notes:</strong></span> The return type of this overload
is <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="keyword">decltype</span><span class="special">(</span><span class="identifier">f</span><span class="special">(</span><span class="identifier">istd</span><span class="special">::</span><span class="identifier">move</span><span class="special">(**</span><span class="keyword">this</span><span class="special">)))&gt;</span></code>.
</li>
</ul></div>
<p>
<span class="inlinemediaobject"><img src="../../../images/space.png" alt="space"></span>
</p>
<a name="reference_optional_flat_map"></a><div class="blockquote"><blockquote class="blockquote"><p>
<code class="computeroutput"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="keyword">auto</span> <span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">flat_map</span><span class="special">(</span><span class="identifier">F</span> <span class="identifier">f</span><span class="special">)</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="special">-&gt;</span>
</code><span class="emphasis"><em>see below</em></span><code class="computeroutput"> <span class="special">;</span></code>
</p></blockquote></div>
<div class="blockquote"><blockquote class="blockquote"><p>
<code class="computeroutput"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="keyword">auto</span> <span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">flat_map</span><span class="special">(</span><span class="identifier">F</span> <span class="identifier">f</span><span class="special">)</span> <span class="special">&amp;</span> <span class="special">-&gt;</span> </code><span class="emphasis"><em>see below</em></span><code class="computeroutput">
<span class="special">;</span></code>
</p></blockquote></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<span class="bold"><strong>Requires:</strong></span> The return type of expression
<code class="computeroutput"><span class="identifier">f</span><span class="special">(**</span><span class="keyword">this</span><span class="special">)</span></code>
is <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">U</span><span class="special">&gt;</span></code>
for some object or reference type <code class="computeroutput"><span class="identifier">U</span></code>.
</li>
<li class="listitem">
<span class="bold"><strong>Effects:</strong></span> <code class="computeroutput"><span class="keyword">if</span>
<span class="special">(*</span><span class="keyword">this</span><span class="special">)</span> <span class="keyword">return</span> <span class="identifier">f</span><span class="special">(**</span><span class="keyword">this</span><span class="special">);</span> <span class="keyword">else</span> <span class="keyword">return</span>
<span class="identifier">none</span><span class="special">;</span></code>
</li>
<li class="listitem">
<span class="bold"><strong>Notes:</strong></span> The return type of these overloads
is <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">U</span><span class="special">&gt;</span></code>.
On compilers that do not support ref-qualifiers on member functions,
these two (as well as the next one) overloads are replaced with good
old const and non-const overloads.
</li>
<li class="listitem">
<span class="bold"><strong>Example:</strong></span>
<pre class="programlisting"><span class="identifier">optional</span><span class="special">&lt;</span><span class="keyword">char</span><span class="special">&gt;</span> <span class="identifier">first_char</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">string</span><span class="special">&amp;</span> <span class="identifier">s</span><span class="special">)</span> <span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">s</span><span class="special">.</span><span class="identifier">empty</span><span class="special">()</span> <span class="special">?</span> <span class="identifier">none</span> <span class="special">:</span> <span class="identifier">optional</span><span class="special">&lt;</span><span class="keyword">char</span><span class="special">&gt;(</span><span class="identifier">s</span><span class="special">[</span><span class="number">0</span><span class="special">]);</span>
<span class="special">};</span>
<span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">string</span><span class="special">&gt;</span> <span class="identifier">o1</span> <span class="special">{},</span> <span class="identifier">o2</span> <span class="special">{</span><span class="string">"cat"</span><span class="special">};</span>
<span class="identifier">optional</span><span class="special">&lt;</span><span class="keyword">char</span><span class="special">&gt;</span> <span class="identifier">os1</span> <span class="special">=</span> <span class="identifier">o1</span><span class="special">.</span><span class="identifier">flat_map</span><span class="special">(</span><span class="identifier">first_char</span><span class="special">),</span> <span class="identifier">os2</span> <span class="special">=</span> <span class="identifier">o2</span><span class="special">.</span><span class="identifier">flat_map</span><span class="special">(</span><span class="identifier">first_char</span><span class="special">);</span>
<span class="identifier">assert</span> <span class="special">(</span> <span class="special">!</span><span class="identifier">os1</span> <span class="special">)</span> <span class="special">;</span>
<span class="identifier">assert</span> <span class="special">(</span> <span class="identifier">os2</span> <span class="special">)</span> <span class="special">;</span>
<span class="identifier">assert</span> <span class="special">(</span> <span class="special">*</span><span class="identifier">os2</span> <span class="special">==</span> <span class="char">'c'</span> <span class="special">)</span> <span class="special">;</span>
</pre>
<span class="inlinemediaobject"><img src="../../../images/space.png" alt="space"></span>
</li>
</ul></div>
<a name="reference_optional_flat_map_move"></a><div class="blockquote"><blockquote class="blockquote"><p>
<code class="computeroutput"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="keyword">auto</span> <span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">flat_map</span><span class="special">(</span><span class="identifier">F</span> <span class="identifier">f</span><span class="special">)</span> <span class="special">&amp;&amp;</span>
<span class="special">-&gt;</span> </code><span class="emphasis"><em>see below</em></span><code class="computeroutput">
<span class="special">;</span></code>
</p></blockquote></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<span class="bold"><strong>Requires:</strong></span> The return type of expression
<code class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">move</span><span class="special">(**</span><span class="keyword">this</span><span class="special">))</span></code>
is <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">U</span><span class="special">&gt;</span></code>
for some object or reference type <code class="computeroutput"><span class="identifier">U</span></code>.
</li>
<li class="listitem">
<span class="bold"><strong>Effects:</strong></span> <code class="computeroutput"><span class="keyword">if</span>
<span class="special">(*</span><span class="keyword">this</span><span class="special">)</span> <span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">move</span><span class="special">(**</span><span class="keyword">this</span><span class="special">));</span> <span class="keyword">else</span> <span class="keyword">return</span>
<span class="identifier">none</span><span class="special">;</span></code>
</li>
<li class="listitem">
<span class="bold"><strong>Notes:</strong></span> The return type of this overload
is <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">U</span><span class="special">&gt;</span></code>.
</li>
</ul></div>
<p> <p>
<span class="inlinemediaobject"><img src="../../../images/space.png" alt="space"></span> <span class="inlinemediaobject"><img src="../../../images/space.png" alt="space"></span>
</p> </p>
@ -1592,6 +1712,9 @@
<span class="keyword">const</span> <span class="keyword">noexcept</span> <span class="keyword">const</span> <span class="keyword">noexcept</span>
<span class="special">;</span></code> <span class="special">;</span></code>
</p></blockquote></div> </p></blockquote></div>
<div class="blockquote"><blockquote class="blockquote"><p>
<code class="computeroutput"><span class="keyword">bool</span> <span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">has_value</span><span class="special">()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span> <span class="special">;</span></code>
</p></blockquote></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "> <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"> <li class="listitem">
<span class="bold"><strong>Returns:</strong></span> <code class="computeroutput"><span class="identifier">get_ptr</span><span class="special">()</span> <span class="special">!=</span> <span class="number">0</span></code>. <span class="bold"><strong>Returns:</strong></span> <code class="computeroutput"><span class="identifier">get_ptr</span><span class="special">()</span> <span class="special">!=</span> <span class="number">0</span></code>.
@ -1651,8 +1774,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

5
doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_in_place_init.html
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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Initialization tags</title> <title>Initialization tags</title>
<link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css"> <link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
<link rel="home" href="../../../index.html" title="Boost.Optional"> <link rel="home" href="../../../index.html" title="Boost.Optional">
<link rel="up" href="../../../optional/reference/header__boost_optional_optional_hpp_.html" title="Header &lt;boost/optional/optional.hpp&gt;"> <link rel="up" href="../../../optional/reference/header__boost_optional_optional_hpp_.html" title="Header &lt;boost/optional/optional.hpp&gt;">
<link rel="prev" href="../../../optional/reference/header__boost_optional_optional_hpp_.html" title="Header &lt;boost/optional/optional.hpp&gt;"> <link rel="prev" href="../../../optional/reference/header__boost_optional_optional_hpp_.html" title="Header &lt;boost/optional/optional.hpp&gt;">
@ -47,8 +47,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

12
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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Optional References</title> <title>Optional References</title>
<link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css"> <link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
<link rel="home" href="../../../index.html" title="Boost.Optional"> <link rel="home" href="../../../index.html" title="Boost.Optional">
<link rel="up" href="../../../optional/reference/header__boost_optional_optional_hpp_.html" title="Header &lt;boost/optional/optional.hpp&gt;"> <link rel="up" href="../../../optional/reference/header__boost_optional_optional_hpp_.html" title="Header &lt;boost/optional/optional.hpp&gt;">
<link rel="prev" href="header_optional_optional_values.html" title="Optional Values"> <link rel="prev" href="header_optional_optional_values.html" title="Optional Values">
@ -53,7 +53,6 @@
<span class="identifier">optional</span><span class="special">&amp;</span> <span class="keyword">operator</span> <span class="special">=</span> <span class="special">(</span> <span class="identifier">none_t</span> <span class="special">)</span> <span class="keyword">noexcept</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_references.html#reference_optional_ref_assign_none_t"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a> <span class="identifier">optional</span><span class="special">&amp;</span> <span class="keyword">operator</span> <span class="special">=</span> <span class="special">(</span> <span class="identifier">none_t</span> <span class="special">)</span> <span class="keyword">noexcept</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_references.html#reference_optional_ref_assign_none_t"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="identifier">optional</span><span class="special">&amp;</span> <span class="keyword">operator</span> <span class="special">=</span> <span class="special">(</span> <span class="identifier">optional</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">rhs</span> <span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span> <a class="link" href="detailed_semantics___optional_references.html#reference_optional_ref_copy_assign"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a> <span class="identifier">optional</span><span class="special">&amp;</span> <span class="keyword">operator</span> <span class="special">=</span> <span class="special">(</span> <span class="identifier">optional</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">rhs</span> <span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span> <a class="link" href="detailed_semantics___optional_references.html#reference_optional_ref_copy_assign"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">U</span><span class="special">&gt;</span> <span class="identifier">optional</span><span class="special">&amp;</span> <span class="keyword">operator</span> <span class="special">=</span> <span class="special">(</span> <span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">U</span><span class="special">&amp;&gt;</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">rhs</span> <span class="special">)</span> <span class="keyword">noexcept</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_references.html#reference_optional_ref_assign_optional_U"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a> <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">U</span><span class="special">&gt;</span> <span class="identifier">optional</span><span class="special">&amp;</span> <span class="keyword">operator</span> <span class="special">=</span> <span class="special">(</span> <span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">U</span><span class="special">&amp;&gt;</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">rhs</span> <span class="special">)</span> <span class="keyword">noexcept</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_references.html#reference_optional_ref_assign_optional_U"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
@ -73,8 +72,14 @@
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="identifier">T</span><span class="special">&amp;</span> <span class="identifier">value_or_eval</span><span class="special">(</span> <span class="identifier">F</span> <span class="identifier">f</span> <span class="special">)</span> <span class="keyword">const</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_references.html#reference_optional_ref_value_or_eval"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a> <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="identifier">T</span><span class="special">&amp;</span> <span class="identifier">value_or_eval</span><span class="special">(</span> <span class="identifier">F</span> <span class="identifier">f</span> <span class="special">)</span> <span class="keyword">const</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_references.html#reference_optional_ref_value_or_eval"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="keyword">auto</span> <span class="identifier">map</span><span class="special">(</span> <span class="identifier">F</span> <span class="identifier">f</span> <span class="special">)</span> <span class="keyword">const</span> <span class="special">-&gt;</span> <span class="emphasis"><em>see below</em></span><span class="special">;</span> <a class="link" href="detailed_semantics___optional_references.html#reference_optional_ref_map"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="keyword">auto</span> <span class="identifier">flat_map</span><span class="special">(</span> <span class="identifier">F</span> <span class="identifier">f</span> <span class="special">)</span> <span class="keyword">const</span> <span class="special">-&gt;</span> <span class="emphasis"><em>see below</em></span><span class="special">;</span> <a class="link" href="detailed_semantics___optional_references.html#reference_optional_ref_flat_map"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="identifier">T</span><span class="special">*</span> <span class="identifier">get_ptr</span><span class="special">()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_references.html#reference_optional_ref_get_ptr"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a> <span class="identifier">T</span><span class="special">*</span> <span class="identifier">get_ptr</span><span class="special">()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_references.html#reference_optional_ref_get_ptr"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="keyword">bool</span> <span class="identifier">has_value</span><span class="special">()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_references.html#reference_optional_ref_operator_bool"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="keyword">explicit</span> <span class="keyword">operator</span> <span class="keyword">bool</span><span class="special">()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_references.html#reference_optional_ref_operator_bool"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a> <span class="keyword">explicit</span> <span class="keyword">operator</span> <span class="keyword">bool</span><span class="special">()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_references.html#reference_optional_ref_operator_bool"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">!()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_references.html#reference_optional_ref_operator_not"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a> <span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">!()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_references.html#reference_optional_ref_operator_not"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
@ -100,8 +105,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

15
doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_optional_values.html
View File

@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Optional Values</title> <title>Optional Values</title>
<link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css"> <link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
<link rel="home" href="../../../index.html" title="Boost.Optional"> <link rel="home" href="../../../index.html" title="Boost.Optional">
<link rel="up" href="../../../optional/reference/header__boost_optional_optional_hpp_.html" title="Header &lt;boost/optional/optional.hpp&gt;"> <link rel="up" href="../../../optional/reference/header__boost_optional_optional_hpp_.html" title="Header &lt;boost/optional/optional.hpp&gt;">
<link rel="prev" href="header_optional_in_place_init.html" title="Initialization tags"> <link rel="prev" href="header_optional_in_place_init.html" title="Initialization tags">
@ -105,9 +105,19 @@
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="identifier">T</span> <span class="identifier">value_or_eval</span><span class="special">(</span> <span class="identifier">F</span> <span class="identifier">f</span> <span class="special">)</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_value_or_call"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a> <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="identifier">T</span> <span class="identifier">value_or_eval</span><span class="special">(</span> <span class="identifier">F</span> <span class="identifier">f</span> <span class="special">)</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_value_or_call"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="identifier">T</span> <span class="identifier">value_or_eval</span><span class="special">(</span> <span class="identifier">F</span> <span class="identifier">f</span> <span class="special">)</span> <span class="special">&amp;&amp;</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_value_or_call_move"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a> <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="identifier">T</span> <span class="identifier">value_or_eval</span><span class="special">(</span> <span class="identifier">F</span> <span class="identifier">f</span> <span class="special">)</span> <span class="special">&amp;&amp;</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_value_or_call_move"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="keyword">auto</span> <span class="identifier">map</span><span class="special">(</span> <span class="identifier">F</span> <span class="identifier">f</span> <span class="special">)</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="special">-&gt;</span> <span class="emphasis"><em>see below</em></span><span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_map"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="keyword">auto</span> <span class="identifier">map</span><span class="special">(</span> <span class="identifier">F</span> <span class="identifier">f</span> <span class="special">)</span> <span class="special">&amp;</span> <span class="special">-&gt;</span> <span class="emphasis"><em>see below</em></span><span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_map"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="keyword">auto</span> <span class="identifier">map</span><span class="special">(</span> <span class="identifier">F</span> <span class="identifier">f</span> <span class="special">)</span> <span class="special">&amp;&amp;</span> <span class="special">-&gt;</span> <span class="emphasis"><em>see below</em></span><span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_map_move"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="keyword">auto</span> <span class="identifier">flat_map</span><span class="special">(</span> <span class="identifier">F</span> <span class="identifier">f</span> <span class="special">)</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="special">-&gt;</span> <span class="emphasis"><em>see below</em></span><span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_flat_map"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="keyword">auto</span> <span class="identifier">flat_map</span><span class="special">(</span> <span class="identifier">F</span> <span class="identifier">f</span> <span class="special">)</span> <span class="special">&amp;</span> <span class="special">-&gt;</span> <span class="emphasis"><em>see below</em></span><span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_flat_map"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">F</span><span class="special">&gt;</span> <span class="keyword">auto</span> <span class="identifier">flat_map</span><span class="special">(</span> <span class="identifier">F</span> <span class="identifier">f</span> <span class="special">)</span> <span class="special">&amp;&amp;</span> <span class="special">-&gt;</span> <span class="emphasis"><em>see below</em></span><span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_flat_map_move"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="identifier">T</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">get_ptr</span><span class="special">()</span> <span class="keyword">const</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_get_ptr"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a> <span class="identifier">T</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">get_ptr</span><span class="special">()</span> <span class="keyword">const</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_get_ptr"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="identifier">T</span><span class="special">*</span> <span class="identifier">get_ptr</span><span class="special">()</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_get_ptr"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a> <span class="identifier">T</span><span class="special">*</span> <span class="identifier">get_ptr</span><span class="special">()</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_get_ptr"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="keyword">bool</span> <span class="identifier">has_value</span><span class="special">()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_operator_bool"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="keyword">explicit</span> <span class="keyword">operator</span> <span class="keyword">bool</span><span class="special">()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_operator_bool"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a> <span class="keyword">explicit</span> <span class="keyword">operator</span> <span class="keyword">bool</span><span class="special">()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_operator_bool"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">!()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_operator_not"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a> <span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">!()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span> <span class="special">;</span> <a class="link" href="detailed_semantics___optional_values.html#reference_optional_operator_not"><span class="inlinemediaobject"><img src="../../../images/callouts/R.png" alt="R"></span></a>
@ -130,8 +140,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

5
doc/html/boost_optional/reference/io_header.html
View File

@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Header &lt;boost/optional/optional_io.hpp&gt;</title> <title>Header &lt;boost/optional/optional_io.hpp&gt;</title>
<link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css"> <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
<link rel="home" href="../../index.html" title="Boost.Optional"> <link rel="home" href="../../index.html" title="Boost.Optional">
<link rel="up" href="../../optional/reference.html" title="Reference"> <link rel="up" href="../../optional/reference.html" title="Reference">
<link rel="prev" href="header__boost_optional_bad_optional_access_hpp_/detailed_semantics.html" title="Detailed semantics"> <link rel="prev" href="header__boost_optional_bad_optional_access_hpp_/detailed_semantics.html" title="Detailed semantics">
@ -58,8 +58,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

5
doc/html/boost_optional/reference/io_header/io_semantics.html
View File

@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Detailed semantics</title> <title>Detailed semantics</title>
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<link rel="up" href="../io_header.html" title="Header &lt;boost/optional/optional_io.hpp&gt;"> <link rel="up" href="../io_header.html" title="Header &lt;boost/optional/optional_io.hpp&gt;">
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@ -98,8 +98,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

52
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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Release Notes</title> <title>Release Notes</title>
<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css"> <link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
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@ -28,6 +28,37 @@
</h2></div></div></div> </h2></div></div></div>
<h4> <h4>
<a name="boost_optional.relnotes.h0"></a> <a name="boost_optional.relnotes.h0"></a>
<span class="phrase"><a name="boost_optional.relnotes.boost_release_1_68"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_68">Boost
Release 1.68</a>
</h4>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Added member function <code class="computeroutput"><span class="identifier">has_value</span><span class="special">()</span></code> for compatibility with <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">optional</span></code> (<a href="https://github.com/boostorg/optional/issues/52" target="_top">issue
#52</a>).
</li>
<li class="listitem">
Added member function <code class="computeroutput"><span class="identifier">map</span><span class="special">()</span></code> for transforming <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span></code> into <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">U</span><span class="special">&gt;</span></code> using a function of type <code class="computeroutput"><span class="identifier">T</span> <span class="special">-&gt;</span> <span class="identifier">U</span></code>.
</li>
<li class="listitem">
Added member function <code class="computeroutput"><span class="identifier">flat_map</span><span class="special">()</span></code> for transforming <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span></code> into <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">U</span><span class="special">&gt;</span></code> using a function of type <code class="computeroutput"><span class="identifier">T</span> <span class="special">-&gt;</span> <span class="identifier">optonal</span><span class="special">&lt;</span><span class="identifier">U</span><span class="special">&gt;</span></code>.
</li>
</ul></div>
<h4>
<a name="boost_optional.relnotes.h1"></a>
<span class="phrase"><a name="boost_optional.relnotes.boost_release_1_67"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_67">Boost
Release 1.67</a>
</h4>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
Fixed <a href="https://github.com/boostorg/optional/issues/46" target="_top">issue
#46</a>.
</li>
<li class="listitem">
Fixed <code class="computeroutput"><span class="special">-</span><span class="identifier">Wzero</span><span class="special">-</span><span class="identifier">as</span><span class="special">-</span><span class="identifier">null</span><span class="special">-</span><span class="identifier">pointer</span><span class="special">-</span><span class="identifier">constant</span></code> warnings.
</li>
</ul></div>
<h4>
<a name="boost_optional.relnotes.h2"></a>
<span class="phrase"><a name="boost_optional.relnotes.boost_release_1_66"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_66">Boost <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_66"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_66">Boost
Release 1.66</a> Release 1.66</a>
</h4> </h4>
@ -45,7 +76,7 @@
</li> </li>
</ul></div> </ul></div>
<h4> <h4>
<a name="boost_optional.relnotes.h1"></a> <a name="boost_optional.relnotes.h3"></a>
<span class="phrase"><a name="boost_optional.relnotes.boost_release_1_63"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_63">Boost <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_63"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_63">Boost
Release 1.63</a> Release 1.63</a>
</h4> </h4>
@ -69,7 +100,7 @@
</li> </li>
</ul></div> </ul></div>
<h4> <h4>
<a name="boost_optional.relnotes.h2"></a> <a name="boost_optional.relnotes.h4"></a>
<span class="phrase"><a name="boost_optional.relnotes.boost_release_1_62"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_62">Boost <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_62"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_62">Boost
Release 1.62</a> Release 1.62</a>
</h4> </h4>
@ -77,7 +108,7 @@
Fixed <a href="https://svn.boost.org/trac/boost/ticket/12179" target="_top">Trac #12179</a>. Fixed <a href="https://svn.boost.org/trac/boost/ticket/12179" target="_top">Trac #12179</a>.
</li></ul></div> </li></ul></div>
<h4> <h4>
<a name="boost_optional.relnotes.h3"></a> <a name="boost_optional.relnotes.h5"></a>
<span class="phrase"><a name="boost_optional.relnotes.boost_release_1_61"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_61">Boost <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_61"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_61">Boost
Release 1.61</a> Release 1.61</a>
</h4> </h4>
@ -120,7 +151,7 @@
</li> </li>
</ul></div> </ul></div>
<h4> <h4>
<a name="boost_optional.relnotes.h4"></a> <a name="boost_optional.relnotes.h6"></a>
<span class="phrase"><a name="boost_optional.relnotes.boost_release_1_60"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_60">Boost <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_60"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_60">Boost
Release 1.60</a> Release 1.60</a>
</h4> </h4>
@ -131,7 +162,7 @@
#11203</a>. #11203</a>.
</li></ul></div> </li></ul></div>
<h4> <h4>
<a name="boost_optional.relnotes.h5"></a> <a name="boost_optional.relnotes.h7"></a>
<span class="phrase"><a name="boost_optional.relnotes.boost_release_1_59"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_59">Boost <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_59"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_59">Boost
Release 1.59</a> Release 1.59</a>
</h4> </h4>
@ -145,7 +176,7 @@
</li> </li>
</ul></div> </ul></div>
<h4> <h4>
<a name="boost_optional.relnotes.h6"></a> <a name="boost_optional.relnotes.h8"></a>
<span class="phrase"><a name="boost_optional.relnotes.boost_release_1_58"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_58">Boost <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_58"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_58">Boost
Release 1.58</a> Release 1.58</a>
</h4> </h4>
@ -181,7 +212,7 @@
</li> </li>
</ul></div> </ul></div>
<h4> <h4>
<a name="boost_optional.relnotes.h7"></a> <a name="boost_optional.relnotes.h9"></a>
<span class="phrase"><a name="boost_optional.relnotes.boost_release_1_57"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_57">Boost <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_57"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_57">Boost
Release 1.57</a> Release 1.57</a>
</h4> </h4>
@ -191,7 +222,7 @@
to fix C++03 compile error on <code class="computeroutput"><span class="identifier">logic_error</span><span class="special">(</span><span class="string">"..."</span><span class="special">)</span></code>"</em></span>. to fix C++03 compile error on <code class="computeroutput"><span class="identifier">logic_error</span><span class="special">(</span><span class="string">"..."</span><span class="special">)</span></code>"</em></span>.
</li></ul></div> </li></ul></div>
<h4> <h4>
<a name="boost_optional.relnotes.h8"></a> <a name="boost_optional.relnotes.h10"></a>
<span class="phrase"><a name="boost_optional.relnotes.boost_release_1_56"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_56">Boost <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_56"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_56">Boost
Release 1.56</a> Release 1.56</a>
</h4> </h4>
@ -248,8 +279,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Design Overview</title> <title>Design Overview</title>
<link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css"> <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
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<link rel="prev" href="../../optional/tutorial.html" title="Tutorial"> <link rel="prev" href="../../optional/tutorial.html" title="Tutorial">
@ -170,8 +170,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>The Interface</title> <title>The Interface</title>
<link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css"> <link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
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<link rel="up" href="../design_overview.html" title="Design Overview"> <link rel="up" href="../design_overview.html" title="Design Overview">
<link rel="prev" href="the_semantics.html" title="The semantics"> <link rel="prev" href="the_semantics.html" title="The semantics">
@ -173,8 +173,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>The semantics</title> <title>The semantics</title>
<link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css"> <link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
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<link rel="prev" href="../design_overview.html" title="Design Overview"> <link rel="prev" href="../design_overview.html" title="Design Overview">
@ -107,8 +107,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Exception Safety Guarantees</title> <title>Exception Safety Guarantees</title>
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@ -161,8 +161,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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5
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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Gotchas</title> <title>Gotchas</title>
<link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css"> <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css">
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@ -98,8 +98,7 @@
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Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
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@ -183,8 +183,7 @@
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Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
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@ -73,8 +73,7 @@
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Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Optional references</title> <title>Optional references</title>
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@ -103,8 +103,7 @@
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Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
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<title>Rebinding semantics for assignment of optional references</title> <title>Rebinding semantics for assignment of optional references</title>
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@ -133,8 +133,7 @@
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Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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@ -56,12 +56,13 @@
<p> <p>
We call it a <span class="emphasis"><em>direct</em></span> storage. This makes <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span></code> a We call it a <span class="emphasis"><em>direct</em></span> storage. This makes <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span></code> a
trivially-copyable type for scalar <code class="computeroutput"><span class="identifier">T</span></code>s. trivially-copyable type for scalar <code class="computeroutput"><span class="identifier">T</span></code>s.
This only works for compilers that support defaulted functions. On compilers This only works for compilers that support defaulted functions (including
without defaulted functions we still use the direct storage, but <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span></code> is defaulted move assignment and constructor). On compilers without defaulted
no longer recognized as trivially-copyable. Apart from scalar types, we leave functions we still use the direct storage, but <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span></code>
the programmer a way of customizing her type, so that it is reconized by is no longer recognized as trivially-copyable. Apart from scalar types, we
<code class="computeroutput"><span class="identifier">optional</span></code> as candidate for leave the programmer a way of customizing her type, so that it is reconized
optimized storage, by specializing type trait <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">opitonal_config</span><span class="special">::</span><span class="identifier">optional_uses_direct_storage_for</span></code>: by <code class="computeroutput"><span class="identifier">optional</span></code> as candidate
for optimized storage, by specializing type trait <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">opitonal_config</span><span class="special">::</span><span class="identifier">optional_uses_direct_storage_for</span></code>:
</p> </p>
<pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">X</span> <span class="comment">// not trivial</span> <pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">X</span> <span class="comment">// not trivial</span>
<span class="special">{</span> <span class="special">{</span>
@ -250,8 +251,7 @@
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<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

5
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@ -99,8 +99,7 @@
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Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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5
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@ -95,8 +95,7 @@
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Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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<title>When to use Optional</title> <title>When to use Optional</title>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

7
doc/html/index.html
View File

@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Boost.Optional</title> <title>Boost.Optional</title>
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</head> </head>
@ -26,8 +26,7 @@
<span class="firstname">Fernando Luis</span> <span class="surname">Cacciola Carballal</span> <span class="firstname">Fernando Luis</span> <span class="surname">Cacciola Carballal</span>
</h3></div></div> </h3></div></div>
<div><p class="copyright">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal</p></div> <div><p class="copyright">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal</p></div>
<div><p class="copyright">Copyright &#169; 2014-2017 Andrzej <div><p class="copyright">Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski</p></div>
Krzemie&#324;ski</p></div>
<div><div class="legalnotice"> <div><div class="legalnotice">
<a name="optional.legal"></a><p> <a name="optional.legal"></a><p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
@ -146,7 +145,7 @@
</div> </div>
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"><p><small>Last revised: May 17, 2017 at 23:01:39 GMT</small></p></td> <td align="left"><p><small>Last revised: July 02, 2018 at 21:10:01 GMT</small></p></td>
<td align="right"><div class="copyright-footer"></div></td> <td align="right"><div class="copyright-footer"></div></td>
</tr></table> </tr></table>
<hr> <hr>

5
doc/html/optional/reference.html
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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Reference</title> <title>Reference</title>
<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css"> <link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
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<link rel="prev" href="../boost_optional/tutorial/performance_considerations.html" title="Performance considerations"> <link rel="prev" href="../boost_optional/tutorial/performance_considerations.html" title="Performance considerations">
@ -75,8 +75,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

5
doc/html/optional/reference/header__boost_optional_optional_hpp_.html
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@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Header &lt;boost/optional/optional.hpp&gt;</title> <title>Header &lt;boost/optional/optional.hpp&gt;</title>
<link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css"> <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
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<link rel="up" href="../reference.html" title="Reference"> <link rel="up" href="../reference.html" title="Reference">
<link rel="prev" href="../../boost_optional/reference/header__boost_optional_optional_fwd_hpp_.html" title="Header &lt;boost/optional/optional_fwd.hpp&gt;"> <link rel="prev" href="../../boost_optional/reference/header__boost_optional_optional_fwd_hpp_.html" title="Header &lt;boost/optional/optional_fwd.hpp&gt;">
@ -97,8 +97,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

5
doc/html/optional/tutorial.html
View File

@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Tutorial</title> <title>Tutorial</title>
<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css"> <link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
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@ -139,8 +139,7 @@
</div> </div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td> <td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2017 Andrzej <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
Krzemie&#324;ski<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p> </p>

10
include/boost/optional/detail/experimental_traits.hpp
View File

@ -14,10 +14,9 @@
#include <boost/config.hpp> #include <boost/config.hpp>
#include <boost/detail/workaround.hpp> #include <boost/detail/workaround.hpp>
#include <boost/predef.h>
#include <boost/type_traits.hpp> #include <boost/type_traits.hpp>
namespace boost { namespace optional_detail {
// The condition to use POD implementation // The condition to use POD implementation
#ifdef BOOST_OPTIONAL_CONFIG_NO_POD_SPEC #ifdef BOOST_OPTIONAL_CONFIG_NO_POD_SPEC
@ -40,11 +39,16 @@ namespace boost { namespace optional_detail {
# define BOOST_OPTIONAL_DETAIL_NO_SPEC_FOR_TRIVIAL_TYPES # define BOOST_OPTIONAL_DETAIL_NO_SPEC_FOR_TRIVIAL_TYPES
#endif #endif
// GCC 5 or higher, or clang with libc++ or clang with libstdc++ 5 or higher
#if __cplusplus >= 201103L #if __cplusplus >= 201103L
# if BOOST_WORKAROUND(BOOST_GCC, >= 50000) # if BOOST_WORKAROUND(BOOST_GCC, >= 50000)
# define BOOST_OPTIONAL_DETAIL_USE_STD_TYPE_TRAITS # define BOOST_OPTIONAL_DETAIL_USE_STD_TYPE_TRAITS
# elif (defined BOOST_CLANG) # elif (defined BOOST_CLANG)
# if BOOST_LIB_STD_CXX > 0
# define BOOST_OPTIONAL_DETAIL_USE_STD_TYPE_TRAITS # define BOOST_OPTIONAL_DETAIL_USE_STD_TYPE_TRAITS
# elif BOOST_LIB_STD_GNU >= 441200023 && BOOST_LIB_STD_GNU != 450600023 && BOOST_LIB_STD_GNU != 450600026 && BOOST_LIB_STD_GNU != 460800003 && BOOST_LIB_STD_GNU != 450400026 && BOOST_LIB_STD_GNU != 460700026
# define BOOST_OPTIONAL_DETAIL_USE_STD_TYPE_TRAITS
# endif
# endif # endif
#endif #endif
@ -52,10 +56,12 @@ namespace boost { namespace optional_detail {
#ifndef BOOST_OPTIONAL_DETAIL_USE_STD_TYPE_TRAITS #ifndef BOOST_OPTIONAL_DETAIL_USE_STD_TYPE_TRAITS
# define BOOST_OPTIONAL_DETAIL_HAS_TRIVIAL_CTOR(T) BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) # define BOOST_OPTIONAL_DETAIL_HAS_TRIVIAL_CTOR(T) BOOST_HAS_TRIVIAL_CONSTRUCTOR(T)
#else #else
# include <type_traits>
# define BOOST_OPTIONAL_DETAIL_HAS_TRIVIAL_CTOR(T) std::is_trivially_default_constructible<T>::value # define BOOST_OPTIONAL_DETAIL_HAS_TRIVIAL_CTOR(T) std::is_trivially_default_constructible<T>::value
#endif #endif
namespace boost { namespace optional_detail {
#ifndef BOOST_OPTIONAL_DETAIL_NO_SPEC_FOR_TRIVIAL_TYPES #ifndef BOOST_OPTIONAL_DETAIL_NO_SPEC_FOR_TRIVIAL_TYPES
template <typename T> template <typename T>

21
include/boost/optional/detail/optional_reference_spec.hpp
View File

@ -1,4 +1,4 @@
// Copyright (C) 2015-2016 Andrzej Krzemienski. // Copyright (C) 2015-2018 Andrzej Krzemienski.
// //
// Use, modification, and distribution is subject to the Boost Software // Use, modification, and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
@ -159,6 +159,25 @@ public:
void reset() BOOST_NOEXCEPT { ptr_ = 0; } void reset() BOOST_NOEXCEPT { ptr_ = 0; }
bool is_initialized() const BOOST_NOEXCEPT { return ptr_ != 0; } bool is_initialized() const BOOST_NOEXCEPT { return ptr_ != 0; }
bool has_value() const BOOST_NOEXCEPT { return ptr_ != 0; }
template <typename F>
optional<typename boost::result_of<F(T&)>::type> map(F f) const
{
if (this->has_value())
return f(this->get());
else
return none;
}
template <typename F>
optional<typename optional_detail::optional_value_type<typename boost::result_of<F(T&)>::type>::type> flat_map(F f) const
{
if (this->has_value())
return f(get());
else
return none;
}
#ifndef BOOST_OPTIONAL_DETAIL_NO_RVALUE_REFERENCES #ifndef BOOST_OPTIONAL_DETAIL_NO_RVALUE_REFERENCES

110
include/boost/optional/optional.hpp
View File

@ -1,5 +1,5 @@
// Copyright (C) 2003, 2008 Fernando Luis Cacciola Carballal. // Copyright (C) 2003, 2008 Fernando Luis Cacciola Carballal.
// Copyright (C) 2014 - 2017 Andrzej Krzemienski. // Copyright (C) 2014 - 2018 Andrzej Krzemienski.
// //
// Use, modification, and distribution is subject to the Boost Software // Use, modification, and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
@ -53,6 +53,7 @@
#include <boost/move/utility.hpp> #include <boost/move/utility.hpp>
#include <boost/none.hpp> #include <boost/none.hpp>
#include <boost/utility/compare_pointees.hpp> #include <boost/utility/compare_pointees.hpp>
#include <boost/utility/result_of.hpp>
#include <boost/optional/optional_fwd.hpp> #include <boost/optional/optional_fwd.hpp>
#include <boost/optional/detail/optional_config.hpp> #include <boost/optional/detail/optional_config.hpp>
@ -375,7 +376,7 @@ class optional_base : public optional_tag
pointer_const_type get_ptr() const { return m_initialized ? get_ptr_impl() : 0 ; } pointer_const_type get_ptr() const { return m_initialized ? get_ptr_impl() : 0 ; }
pointer_type get_ptr() { return m_initialized ? get_ptr_impl() : 0 ; } pointer_type get_ptr() { return m_initialized ? get_ptr_impl() : 0 ; }
bool is_initialized() const { return m_initialized ; } bool is_initialized() const BOOST_NOEXCEPT { return m_initialized ; }
protected : protected :
@ -757,7 +758,16 @@ class optional_base : public optional_tag
storage_type m_storage ; storage_type m_storage ;
} ; } ;
template <typename T>
struct optional_value_type
{
};
template <typename T>
struct optional_value_type< ::boost::optional<T> >
{
typedef T type;
};
#include <boost/optional/detail/optional_trivially_copyable_base.hpp> #include <boost/optional/detail/optional_trivially_copyable_base.hpp>
@ -1304,7 +1314,7 @@ class optional
#endif #endif
#ifndef BOOST_NO_CXX11_REF_QUALIFIERS #if (!defined BOOST_NO_CXX11_REF_QUALIFIERS) && (!defined BOOST_OPTIONAL_DETAIL_NO_RVALUE_REFERENCES)
template <typename F> template <typename F>
value_type value_or_eval ( F f ) const& value_type value_or_eval ( F f ) const&
{ {
@ -1322,6 +1332,61 @@ class optional
else else
return f(); return f();
} }
template <typename F>
optional<typename boost::result_of<F(reference_type)>::type> map(F f) &
{
if (this->has_value())
return f(get());
else
return none;
}
template <typename F>
optional<typename boost::result_of<F(reference_const_type)>::type> map(F f) const&
{
if (this->has_value())
return f(get());
else
return none;
}
template <typename F>
optional<typename boost::result_of<F(reference_type_of_temporary_wrapper)>::type> map(F f) &&
{
if (this->has_value())
return f(boost::move(this->get()));
else
return none;
}
template <typename F>
optional<typename optional_detail::optional_value_type<typename boost::result_of<F(reference_type)>::type>::type> flat_map(F f) &
{
if (this->has_value())
return f(get());
else
return none;
}
template <typename F>
optional<typename optional_detail::optional_value_type<typename boost::result_of<F(reference_const_type)>::type>::type> flat_map(F f) const&
{
if (this->has_value())
return f(get());
else
return none;
}
template <typename F>
optional<typename optional_detail::optional_value_type<typename boost::result_of<F(reference_type_of_temporary_wrapper)>::type>::type> flat_map(F f) &&
{
if (this->has_value())
return f(boost::move(get()));
else
return none;
}
#else #else
template <typename F> template <typename F>
value_type value_or_eval ( F f ) const value_type value_or_eval ( F f ) const
@ -1331,8 +1396,47 @@ class optional
else else
return f(); return f();
} }
template <typename F>
optional<typename boost::result_of<F(reference_type)>::type> map(F f)
{
if (this->has_value())
return f(get());
else
return none;
}
template <typename F>
optional<typename boost::result_of<F(reference_const_type)>::type> map(F f) const
{
if (this->has_value())
return f(get());
else
return none;
}
template <typename F>
optional<typename optional_detail::optional_value_type<typename boost::result_of<F(reference_type)>::type>::type> flat_map(F f)
{
if (this->has_value())
return f(get());
else
return none;
}
template <typename F>
optional<typename optional_detail::optional_value_type<typename boost::result_of<F(reference_const_type)>::type>::type> flat_map(F f) const
{
if (this->has_value())
return f(get());
else
return none;
}
#endif #endif
bool has_value() const BOOST_NOEXCEPT { return this->is_initialized() ; }
bool operator!() const BOOST_NOEXCEPT { return !this->is_initialized() ; } bool operator!() const BOOST_NOEXCEPT { return !this->is_initialized() ; }
BOOST_EXPLICIT_OPERATOR_BOOL_NOEXCEPT() BOOST_EXPLICIT_OPERATOR_BOOL_NOEXCEPT()

3
test/Jamfile.v2
View File

@ -23,6 +23,8 @@ import testing ;
[ run optional_test_convert_from_T.cpp ] [ run optional_test_convert_from_T.cpp ]
[ run optional_test_empty_braces.cpp ] [ run optional_test_empty_braces.cpp ]
[ run optional_test_make_optional.cpp ] [ run optional_test_make_optional.cpp ]
[ run optional_test_flat_map.cpp ]
[ run optional_test_map.cpp ]
[ run optional_test_tie.cpp ] [ run optional_test_tie.cpp ]
[ run optional_test_ref_assign_portable_minimum.cpp ] [ run optional_test_ref_assign_portable_minimum.cpp ]
[ run optional_test_ref_assign_mutable_int.cpp ] [ run optional_test_ref_assign_mutable_int.cpp ]
@ -71,6 +73,7 @@ import testing ;
[ run optional_test_static_properties.cpp ] [ run optional_test_static_properties.cpp ]
[ compile optional_test_maybe_uninitialized_warning.cpp ] [ compile optional_test_maybe_uninitialized_warning.cpp ]
[ compile optional_test_deleted_default_ctor.cpp ] [ compile optional_test_deleted_default_ctor.cpp ]
#[ run optional_xconfig_HACK_TO_LIST_PREDEFINED_MACROS.cpp ]
[ run optional_xconfig_NO_PROPER_ASSIGN_FROM_CONST_INT_pass.cpp ] [ run optional_xconfig_NO_PROPER_ASSIGN_FROM_CONST_INT_pass.cpp ]
[ run-fail optional_xconfig_NO_PROPER_ASSIGN_FROM_CONST_INT_fail.cpp ] [ run-fail optional_xconfig_NO_PROPER_ASSIGN_FROM_CONST_INT_fail.cpp ]
[ run optional_xconfig_NO_PROPER_CONVERT_FROM_CONST_INT_pass.cpp ] [ run optional_xconfig_NO_PROPER_CONVERT_FROM_CONST_INT_pass.cpp ]

2
test/optional_test.cpp
View File

@ -32,7 +32,7 @@
#include "boost/core/lightweight_test.hpp" #include "boost/core/lightweight_test.hpp"
#include "optional_test_common.cpp" #include "optional_test_common.hpp"
void test_implicit_construction ( optional<double> opt, double v, double z ) void test_implicit_construction ( optional<double> opt, double v, double z )
{ {

12
test/optional_test_common.cpp → test/optional_test_common.hpp
View File

@ -194,6 +194,9 @@ inline void check_uninitialized_const ( optional<T> const& opt )
BOOST_TEST( !opt ) ; BOOST_TEST( !opt ) ;
BOOST_TEST( !get_pointer(opt) ) ; BOOST_TEST( !get_pointer(opt) ) ;
BOOST_TEST( !opt.get_ptr() ) ; BOOST_TEST( !opt.get_ptr() ) ;
BOOST_TEST( !opt.has_value() ) ;
BOOST_TEST( !opt.is_initialized() ) ;
BOOST_TEST( opt == boost::none ) ;
} }
template<class T> template<class T>
inline void check_uninitialized ( optional<T>& opt ) inline void check_uninitialized ( optional<T>& opt )
@ -204,6 +207,9 @@ inline void check_uninitialized ( optional<T>& opt )
BOOST_TEST( !opt ) ; BOOST_TEST( !opt ) ;
BOOST_TEST( !get_pointer(opt) ) ; BOOST_TEST( !get_pointer(opt) ) ;
BOOST_TEST( !opt.get_ptr() ) ; BOOST_TEST( !opt.get_ptr() ) ;
BOOST_TEST( !opt.has_value() ) ;
BOOST_TEST( !opt.is_initialized() ) ;
BOOST_TEST( opt == boost::none ) ;
check_uninitialized_const(opt); check_uninitialized_const(opt);
} }
@ -220,6 +226,9 @@ inline void check_initialized_const ( optional<T> const& opt )
BOOST_TEST ( !!opt ) ; BOOST_TEST ( !!opt ) ;
BOOST_TEST ( get_pointer(opt) ) ; BOOST_TEST ( get_pointer(opt) ) ;
BOOST_TEST ( opt.get_ptr() ) ; BOOST_TEST ( opt.get_ptr() ) ;
BOOST_TEST ( opt.has_value() ) ;
BOOST_TEST ( opt.is_initialized() ) ;
BOOST_TEST ( opt != boost::none ) ;
} }
template<class T> template<class T>
@ -234,6 +243,9 @@ inline void check_initialized ( optional<T>& opt )
BOOST_TEST ( !!opt ) ; BOOST_TEST ( !!opt ) ;
BOOST_TEST ( get_pointer(opt) ) ; BOOST_TEST ( get_pointer(opt) ) ;
BOOST_TEST ( opt.get_ptr() ) ; BOOST_TEST ( opt.get_ptr() ) ;
BOOST_TEST ( opt.has_value() ) ;
BOOST_TEST ( opt.is_initialized() ) ;
BOOST_TEST ( opt != boost::none ) ;
check_initialized_const(opt); check_initialized_const(opt);
} }

275
test/optional_test_flat_map.cpp Normal file
View File

@ -0,0 +1,275 @@
// Copyright (C) 2018 Andrzej Krzemienski.
//
// Use, modification, and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/lib/optional for documentation.
//
// You are welcome to contact the author at:
// akrzemi1@gmail.com
#include "boost/optional/optional.hpp"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#include "boost/core/ignore_unused.hpp"
#include "boost/core/is_same.hpp"
#include "boost/core/lightweight_test.hpp"
#include "boost/core/lightweight_test_trait.hpp"
using boost::optional;
using boost::make_optional;
using boost::core::is_same;
template <typename Expected, typename Deduced>
void verify_type(Deduced)
{
BOOST_TEST_TRAIT_TRUE(( is_same<Expected, Deduced> ));
}
struct Int
{
int i;
explicit Int(int i_) : i(i_) {}
};
struct convert_t
{
typedef optional<Int> result_type;
optional<Int> operator()(int i) { if (i != 0) return Int(i); else return boost::none; }
};
void test_flat_map_on_mutable_optional_with_function_object()
{
{
optional<int> oi (1);
verify_type< optional<Int> >(oi.flat_map(convert_t()));
optional<Int> oI = oi.flat_map(convert_t());
BOOST_TEST(bool(oI));
BOOST_TEST_EQ(1, oI->i);
}
{
optional<int> oi (0);
optional<Int> oI = oi.flat_map(convert_t());
BOOST_TEST(!oI);
}
{
optional<int> oi;
optional<Int> oI = oi.flat_map(convert_t());
BOOST_TEST(!oI);
}
}
void test_flat_map_on_const_optional_with_function_object()
{
{
const optional<int> oi (1);
verify_type< optional<Int> >(oi.flat_map(convert_t()));
optional<Int> oI = oi.flat_map(convert_t());
BOOST_TEST(bool(oI));
BOOST_TEST_EQ(1, oI->i);
}
{
const optional<int> oi (0);
optional<Int> oI = oi.flat_map(convert_t());
BOOST_TEST(!oI);
}
{
const optional<int> oi;
optional<Int> oI = oi.flat_map(convert_t());
BOOST_TEST(!oI);
}
}
void test_flat_map_with_lambda()
{
#if !defined BOOST_NO_CXX11_LAMBDAS && !defined BOOST_NO_CXX11_DECLTYPE_N3276
{
optional<int> oi (1);
verify_type< optional<Int> >(oi.flat_map([](int i){ return optional<Int>(i == 0, Int(i)); }));
optional<Int> oI = oi.flat_map([](int i){ return optional<Int>(i != 0, Int(i)); });
BOOST_TEST(bool(oI));
BOOST_TEST_EQ(1, oI->i);
}
{
optional<int> oi (0);
optional<Int> oI = oi.flat_map([](int i){ return optional<Int>(i != 0, Int(i)); });
BOOST_TEST(!oI);
}
{
optional<int> oi;
optional<Int> oI = oi.flat_map([](int i){ return optional<Int>(i != 0, Int(i)); });
BOOST_TEST(!oI);
}
#endif // lambdas
}
struct get_opt_ref
{
typedef optional<int&> result_type;
optional<int&> operator()(int& i) { return i != 0 ? optional<int&>(i) : optional<int&>(); }
};
void test_flat_map_obj_to_ref()
{
{
optional<int> oi (2);
verify_type< optional<int&> >(oi.flat_map(get_opt_ref()));
optional<int&> ori = oi.flat_map(get_opt_ref());
BOOST_TEST(bool(ori));
BOOST_TEST_EQ(2, *ori);
*ori = 3;
BOOST_TEST(bool(oi));
BOOST_TEST_EQ(3, *oi);
BOOST_TEST_EQ(3, *ori);
}
{
optional<int> oi (0);
optional<int&> ori = oi.flat_map(get_opt_ref());
BOOST_TEST(!ori);
}
{
optional<int> oi;
optional<int&> ori = oi.flat_map(get_opt_ref());
BOOST_TEST(!ori);
}
}
optional<int&> get_opt_int_ref(Int& i)
{
return i.i ? optional<int&>(i.i) : optional<int&>();
}
void test_flat_map_ref_to_ref()
{
{
Int I (5);
optional<Int&> orI (I);
verify_type< optional<int&> >(orI.flat_map(get_opt_int_ref));
optional<int&> ori = orI.flat_map(get_opt_int_ref);
BOOST_TEST(bool(ori));
BOOST_TEST_EQ(5, *ori);
*ori = 6;
BOOST_TEST_EQ(6, *ori);
BOOST_TEST_EQ(6, I.i);
}
{
Int I (0);
optional<Int&> orI (I);
optional<int&> ori = orI.flat_map(get_opt_int_ref);
BOOST_TEST(!ori);
}
{
optional<Int&> orI;
optional<int&> ori = orI.flat_map(get_opt_int_ref);
BOOST_TEST(!ori);
}
}
optional< optional<Int> > make_opt_int(int i)
{
if (i == 0)
return boost::none;
else if (i == 1)
return boost::make_optional(optional<Int>());
else
return boost::make_optional(boost::make_optional(Int(i)));
}
void test_flat_map_opt_opt()
{
{
optional<int> oi (9);
verify_type<optional<optional<Int> > >(oi.flat_map(make_opt_int));
optional<optional<Int> > ooI = oi.flat_map(make_opt_int);
BOOST_TEST(bool(ooI));
BOOST_TEST(bool(*ooI));
BOOST_TEST_EQ(9, (**ooI).i);
}
{
optional<int> oi (1);
optional<optional<Int> > ooI = oi.flat_map(make_opt_int);
BOOST_TEST(bool(ooI));
BOOST_TEST(!*ooI);
}
{
optional<int> oi (0);
optional<optional<Int> > ooI = oi.flat_map(make_opt_int);
BOOST_TEST(!ooI);
}
{
optional<int> oi;
optional<optional<Int> > ooI = oi.flat_map(make_opt_int);
BOOST_TEST(!ooI);
}
}
#if (!defined BOOST_NO_CXX11_REF_QUALIFIERS) && (!defined BOOST_OPTIONAL_DETAIL_NO_RVALUE_REFERENCES)
struct MoveOnly
{
int value;
explicit MoveOnly(int i) : value(i) {}
MoveOnly(MoveOnly && r) : value(r.value) { r.value = 0; }
MoveOnly& operator=(MoveOnly && r) { value = r.value; r.value = 0; return *this; }
private:
MoveOnly(MoveOnly const&);
void operator=(MoveOnly const&);
};
MoveOnly makeMoveOnly(int i)
{
return MoveOnly(i);
}
optional<MoveOnly> makeOptMoveOnly(int i)
{
return optional<MoveOnly>(MoveOnly(i));
}
optional<int> get_val(MoveOnly m)
{
return optional<int>(m.value != 0, m.value);
}
void test_flat_map_move_only()
{
{
optional<MoveOnly> om (makeMoveOnly(1)), om2 (makeMoveOnly(2));
verify_type<optional<int> >(boost::move(om).flat_map(get_val));
optional<int> oi = boost::move(om2).flat_map(get_val);
BOOST_TEST(bool(oi));
BOOST_TEST_EQ(2, *oi);
}
{
optional<int> oj = makeOptMoveOnly(4).flat_map(get_val);
BOOST_TEST(bool(oj));
BOOST_TEST_EQ(4, *oj);
}
{
optional<int> oj = optional<MoveOnly>().flat_map(get_val);
BOOST_TEST(!oj);
}
}
#endif // no rvalue refs
int main()
{
test_flat_map_on_mutable_optional_with_function_object();
test_flat_map_on_const_optional_with_function_object();
test_flat_map_with_lambda();
test_flat_map_obj_to_ref();
test_flat_map_ref_to_ref();
test_flat_map_opt_opt();
#if (!defined BOOST_NO_CXX11_REF_QUALIFIERS) && (!defined BOOST_OPTIONAL_DETAIL_NO_RVALUE_REFERENCES)
test_flat_map_move_only();
#endif
return boost::report_errors();
}

192
test/optional_test_map.cpp Normal file
View File

@ -0,0 +1,192 @@
// Copyright (C) 2018 Andrzej Krzemienski.
//
// Use, modification, and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/lib/optional for documentation.
//
// You are welcome to contact the author at:
// akrzemi1@gmail.com
#include "boost/optional/optional.hpp"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#include "boost/core/ignore_unused.hpp"
#include "boost/core/is_same.hpp"
#include "boost/core/lightweight_test.hpp"
#include "boost/core/lightweight_test_trait.hpp"
using boost::optional;
using boost::make_optional;
using boost::core::is_same;
template <typename Expected, typename Deduced>
void verify_type(Deduced)
{
BOOST_TEST_TRAIT_TRUE(( is_same<Expected, Deduced> ));
}
#if (!defined BOOST_NO_CXX11_REF_QUALIFIERS) && (!defined BOOST_OPTIONAL_DETAIL_NO_RVALUE_REFERENCES)
struct MoveOnly
{
int value;
explicit MoveOnly(int i) : value(i) {}
MoveOnly(MoveOnly && r) : value(r.value) { r.value = 0; }
MoveOnly& operator=(MoveOnly && r) { value = r.value; r.value = 0; return *this; }
private:
MoveOnly(MoveOnly const&);
void operator=(MoveOnly const&);
};
MoveOnly makeMoveOnly(int i)
{
return MoveOnly(i);
}
optional<MoveOnly> makeOptMoveOnly(int i)
{
return optional<MoveOnly>(MoveOnly(i));
}
int get_val(MoveOnly m)
{
return m.value;
}
void test_map_move_only()
{
optional<MoveOnly> om (makeMoveOnly(7)), om2 (makeMoveOnly(8));
verify_type<optional<int> >(boost::move(om).map(get_val));
optional<int> oi = boost::move(om2).map(get_val);
BOOST_TEST(bool(oi));
BOOST_TEST_EQ(8, *oi);
optional<int> oj = makeOptMoveOnly(4).map(get_val);
BOOST_TEST(bool(oj));
BOOST_TEST_EQ(4, *oj);
optional<MoveOnly> o_;
optional<int> oi_ = boost::move(o_).map(get_val);
BOOST_TEST(!oi_);
}
#endif // no rvalue refs
struct Int
{
int i;
explicit Int(int i_) : i(i_) {}
};
struct convert_t
{
typedef Int result_type;
Int operator()(int i) { return Int(i); }
};
int& get_int_ref(Int& i)
{
return i.i;
}
struct get_ref
{
typedef int& result_type;
int& operator()(int& i) { return i; }
};
void test_map()
{
optional<int> oi (1);
verify_type<optional<Int> >(oi.map(convert_t()));
optional<Int> oI = oi.map(convert_t());
BOOST_TEST(bool(oI));
BOOST_TEST_EQ(1, oI->i);
optional<Int> o_ = optional<int>().map(convert_t());
BOOST_TEST(!o_);
}
optional<Int> make_opt_int(int i)
{
if (i != 0)
return Int(i);
else
return boost::none;
}
void test_map_optional()
{
optional<int> o9 (9), o0 (0), o_;
verify_type<optional<optional<Int> > >(o9.map(make_opt_int));
optional<optional<Int> > oo9 = o9.map(make_opt_int);
BOOST_TEST(bool(oo9));
BOOST_TEST(bool(*oo9));
BOOST_TEST_EQ(9, (**oo9).i);
optional<optional<Int> > oo0 = o0.map(make_opt_int);
BOOST_TEST(bool(oo0));
BOOST_TEST(!*oo0);
optional<optional<Int> > oo_ = o_.map(make_opt_int);
BOOST_TEST(!oo_);
}
void test_map_with_lambda()
{
#if !defined BOOST_NO_CXX11_LAMBDAS && !defined BOOST_NO_CXX11_DECLTYPE_N3276
optional<int> oi (1), oj(2);
verify_type<optional<bool> >(oi.map([](int i){ return i == 1; }));
optional<bool> ob = oi.map([](int i){ return i == 1; });
optional<bool> oc = oj.map([](int i){ return i == 1; });
BOOST_TEST(bool(ob));
BOOST_TEST_EQ(true, *ob);
BOOST_TEST(bool(oc));
BOOST_TEST_EQ(false, *oc);
#endif // lambdas
}
void test_map_to_ref()
{
optional<int> oi (2);
verify_type<optional<int&> >(oi.map(get_ref()));
optional<int&> ori = oi.map(get_ref());
BOOST_TEST(bool(ori));
*ori = 3;
BOOST_TEST(bool(oi));
BOOST_TEST_EQ(3, *oi);
BOOST_TEST_EQ(3, *ori);
}
void test_map_optional_ref()
{
Int I (5);
optional<Int&> ori (I);
verify_type<optional<int&> >(ori.map(get_int_ref));
optional<int&> orii = ori.map(get_int_ref);
BOOST_TEST(bool(orii));
BOOST_TEST_EQ(5, *orii);
*orii = 6;
BOOST_TEST_EQ(6, I.i);
}
int main()
{
#if (!defined BOOST_NO_CXX11_REF_QUALIFIERS) && (!defined BOOST_OPTIONAL_DETAIL_NO_RVALUE_REFERENCES)
test_map_move_only();
#endif
test_map_with_lambda();
test_map();
test_map_optional();
test_map_to_ref();
test_map_optional();
test_map_optional_ref();
return boost::report_errors();
}

11
test/optional_xconfig_HACK_TO_LIST_PREDEFINED_MACROS.cpp
View File

@ -1,4 +1,4 @@
// Copyright (C) 2015 Andrzej Krzemienski. // Copyright (C) 2015 - 2018 Andrzej Krzemienski.
// //
// Use, modification, and distribution is subject to the Boost Software // Use, modification, and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
@ -11,6 +11,7 @@
#include "boost/core/lightweight_test.hpp" #include "boost/core/lightweight_test.hpp"
#include "boost/optional/detail/optional_config.hpp" #include "boost/optional/detail/optional_config.hpp"
#include "boost/predef.h"
#include <string> #include <string>
int main() int main()
@ -37,5 +38,13 @@ int main()
BOOST_TEST_EQ(empty, __GNUC_PATCHLEVEL__); BOOST_TEST_EQ(empty, __GNUC_PATCHLEVEL__);
BOOST_TEST_EQ(empty, __cplusplus); BOOST_TEST_EQ(empty, __cplusplus);
#endif #endif
BOOST_TEST_EQ(empty, BOOST_COMP_GNUC);
BOOST_TEST_EQ(empty, BOOST_COMP_CLANG);
BOOST_TEST_EQ(empty, BOOST_LANG_STDCPP);
BOOST_TEST_EQ(empty, BOOST_LIB_C_GNU);
BOOST_TEST_EQ(empty, BOOST_LIB_STD_GNU);
BOOST_TEST_EQ(empty, BOOST_LIB_STD_CXX);
return boost::report_errors(); return boost::report_errors();
} }