2014-06-06 23:24:43 +02:00
< html >
< head >
< meta http-equiv = "Content-Type" content = "text/html; charset=US-ASCII" >
< title > Reference< / title >
< link rel = "stylesheet" href = "../../../../../doc/src/boostbook.css" type = "text/css" >
< meta name = "generator" content = "DocBook XSL Stylesheets V1.78.1" >
< link rel = "home" href = "../index.html" title = "Boost.Optional" >
< link rel = "up" href = "../index.html" title = "Boost.Optional" >
< link rel = "prev" href = "../boost_optional/tutorial/type_requirements.html" title = "Type requirements" >
< link rel = "next" href = "../boost_optional/reference/detailed_semantics.html" title = "Detailed Semantics" >
< / head >
< body bgcolor = "white" text = "black" link = "#0000FF" vlink = "#840084" alink = "#0000FF" >
< table cellpadding = "2" width = "100%" > < tr >
< td valign = "top" > < img alt = "Boost C++ Libraries" width = "277" height = "86" src = "../../../../../boost.png" > < / td >
< td align = "center" > < a href = "../../../../../index.html" > Home< / a > < / td >
< td align = "center" > < a href = "../../../../../libs/libraries.htm" > Libraries< / a > < / td >
< td align = "center" > < a href = "http://www.boost.org/users/people.html" > People< / a > < / td >
< td align = "center" > < a href = "http://www.boost.org/users/faq.html" > FAQ< / a > < / td >
< td align = "center" > < a href = "../../../../../more/index.htm" > More< / a > < / td >
< / tr > < / table >
< hr >
< div class = "spirit-nav" >
< a accesskey = "p" href = "../boost_optional/tutorial/type_requirements.html" > < img src = "../../../../../doc/src/images/prev.png" alt = "Prev" > < / a > < a accesskey = "u" href = "../index.html" > < img src = "../../../../../doc/src/images/up.png" alt = "Up" > < / a > < a accesskey = "h" href = "../index.html" > < img src = "../../../../../doc/src/images/home.png" alt = "Home" > < / a > < a accesskey = "n" href = "../boost_optional/reference/detailed_semantics.html" > < img src = "../../../../../doc/src/images/next.png" alt = "Next" > < / a >
< / div >
< div class = "section" >
< div class = "titlepage" > < div > < div > < h2 class = "title" style = "clear: both" >
< a name = "optional.reference" > < / a > < a class = "link" href = "reference.html" title = "Reference" > Reference< / a >
< / h2 > < / div > < / div > < / div >
< div class = "toc" > < dl class = "toc" >
< dt > < span class = "section" > < a href = "reference.html#boost_optional.reference.synopsis" > Synopsis< / a > < / span > < / dt >
< dt > < span class = "section" > < a href = "../boost_optional/reference/detailed_semantics.html" > Detailed
Semantics< / a > < / span > < / dt >
< / dl > < / div >
< div class = "section" >
< div class = "titlepage" > < div > < div > < h3 class = "title" >
< a name = "boost_optional.reference.synopsis" > < / a > < a class = "link" href = "reference.html#boost_optional.reference.synopsis" title = "Synopsis" > Synopsis< / a >
< / h3 > < / div > < / div > < / div >
< pre class = "programlisting" > < code class = "computeroutput" > < span class = "comment" > // In Header: < < / span > < / code > < a href = "../../../../../boost/optional/optional.hpp" target = "_top" > boost/optional/optional.hpp< / a > < span class = "comment" > > < / span >
< span class = "keyword" > namespace< / span > < span class = "identifier" > boost< / span > < span class = "special" > {< / span >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span >
< span class = "keyword" > class< / span > < span class = "identifier" > optional< / span >
< span class = "special" > {< / span >
< span class = "keyword" > public< / span > < span class = "special" > :< / span >
< span class = "comment" > // (If T is of reference type, the parameters and results by reference are by value)< / span >
< span class = "identifier" > optional< / span > < span class = "special" > ()< / span > < span class = "keyword" > noexcept< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_constructor" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "identifier" > optional< / 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 = "../boost_optional/reference/detailed_semantics.html#reference_optional_constructor_none_t" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "identifier" > optional< / span > < span class = "special" > (< / span > < span class = "identifier" > T< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > v< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_constructor_value" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "identifier" > optional< / span > < span class = "special" > (< / span > < span class = "identifier" > T< / span > < span class = "special" > & & < / span > < span class = "identifier" > v< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_constructor_move_value" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "comment" > // [new in 1.34]< / span >
< span class = "identifier" > optional< / span > < span class = "special" > (< / span > < span class = "keyword" > bool< / span > < span class = "identifier" > condition< / span > < span class = "special" > ,< / span > < span class = "identifier" > T< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > v< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_constructor_bool_value" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "identifier" > optional< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > rhs< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_constructor_optional" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "identifier" > optional< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > & & < / span > < span class = "identifier" > rhs< / span > < span class = "special" > )< / span > < span class = "keyword" > noexcept< / span > < span class = "special" > (< / span > < span class = "emphasis" > < em > see below< / em > < / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_move_constructor_optional" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > U< / span > < span class = "special" > > < / span > < span class = "keyword" > explicit< / span > < span class = "identifier" > optional< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > U< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > rhs< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_constructor_other_optional" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > U< / span > < span class = "special" > > < / span > < span class = "keyword" > explicit< / span > < span class = "identifier" > optional< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > U< / span > < span class = "special" > > & & < / span > < span class = "identifier" > rhs< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_move_constructor_other_optional" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > InPlaceFactory< / span > < span class = "special" > > < / span > < span class = "keyword" > explicit< / span > < span class = "identifier" > optional< / span > < span class = "special" > (< / span > < span class = "identifier" > InPlaceFactory< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > f< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_constructor_factory" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > TypedInPlaceFactory< / span > < span class = "special" > > < / span > < span class = "keyword" > explicit< / span > < span class = "identifier" > optional< / span > < span class = "special" > (< / span > < span class = "identifier" > TypedInPlaceFactory< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > f< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_constructor_factory" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "identifier" > optional< / span > < span class = "special" > & < / 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 = "../boost_optional/reference/detailed_semantics.html#reference_optional_operator_equal_none_t" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "identifier" > optional< / span > < span class = "special" > & < / span > < span class = "keyword" > operator< / span > < span class = "special" > =< / span > < span class = "special" > (< / span > < span class = "identifier" > T< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > v< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_operator_equal_value" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "identifier" > optional< / span > < span class = "special" > & < / span > < span class = "keyword" > operator< / span > < span class = "special" > =< / span > < span class = "special" > (< / span > < span class = "identifier" > T< / span > < span class = "special" > & & < / span > < span class = "identifier" > v< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_operator_move_equal_value" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "identifier" > optional< / span > < span class = "special" > & < / 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" > & < / span > < span class = "identifier" > rhs< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_operator_equal_optional" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "identifier" > optional< / span > < span class = "special" > & < / span > < span class = "keyword" > operator< / span > < span class = "special" > =< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > & & < / span > < span class = "identifier" > rhs< / span > < span class = "special" > )< / span > < span class = "keyword" > noexcept< / span > < span class = "special" > (< / span > < span class = "emphasis" > < em > see below< / em > < / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_operator_move_equal_optional" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > U< / span > < span class = "special" > > < / span > < span class = "identifier" > optional< / span > < span class = "special" > & < / span > < span class = "keyword" > operator< / span > < span class = "special" > =< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > U< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > rhs< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_operator_equal_other_optional" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > U< / span > < span class = "special" > > < / span > < span class = "identifier" > optional< / span > < span class = "special" > & < / span > < span class = "keyword" > operator< / span > < span class = "special" > =< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > U< / span > < span class = "special" > > & & < / span > < span class = "identifier" > rhs< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_operator_move_equal_other_optional" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "special" > ...< / span > < span class = "identifier" > Args< / span > < span class = "special" > > < / span > < span class = "keyword" > void< / span > < span class = "identifier" > emplace< / span > < span class = "special" > (< / span > < span class = "identifier" > Args< / span > < span class = "special" > ...& & < / span > < span class = "identifier" > args< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_emplace" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > InPlaceFactory< / span > < span class = "special" > > < / span > < span class = "identifier" > optional< / span > < span class = "special" > & < / span > < span class = "keyword" > operator< / span > < span class = "special" > =< / span > < span class = "special" > (< / span > < span class = "identifier" > InPlaceFactory< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > f< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_operator_equal_factory" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > TypedInPlaceFactory< / span > < span class = "special" > > < / span > < span class = "identifier" > optional< / span > < span class = "special" > & < / span > < span class = "keyword" > operator< / span > < span class = "special" > =< / span > < span class = "special" > (< / span > < span class = "identifier" > TypedInPlaceFactory< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > f< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_operator_equal_factory" > < 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< / span > < span class = "special" > ()< / span > < span class = "keyword" > const< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_get" > < 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< / span > < span class = "special" > ()< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_get" > < 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 = "keyword" > operator< / span > < span class = "special" > -> ()< / span > < span class = "keyword" > const< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_operator_arrow" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "identifier" > T< / span > < span class = "special" > *< / span > < span class = "keyword" > operator< / span > < span class = "special" > -> ()< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_operator_arrow" > < 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 = "keyword" > operator< / span > < span class = "special" > *()< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_operator_asterisk" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
2014-06-28 00:31:36 +02:00
< span class = "identifier" > T< / span > < span class = "special" > & < / span > < span class = "keyword" > operator< / span > < span class = "special" > *()< / span > < span class = "special" > & < / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_operator_asterisk" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
2014-07-10 13:49:36 +02:00
< span class = "identifier" > T< / span > < span class = "special" > & & < / span > < span class = "keyword" > operator< / span > < span class = "special" > *()< / span > < span class = "special" > & & < / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_operator_asterisk_move" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
2014-06-06 23:24:43 +02:00
< span class = "identifier" > T< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > value< / span > < span class = "special" > ()< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_value" > < 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" > value< / span > < span class = "special" > ()< / span > < span class = "special" > & < / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_value" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
2014-07-10 13:49:36 +02:00
< span class = "identifier" > T< / span > < span class = "special" > & & < / span > < span class = "identifier" > value< / span > < span class = "special" > ()< / span > < span class = "special" > & & < / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_value_move" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
2014-06-06 23:24:43 +02:00
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > U< / span > < span class = "special" > > < / span > < span class = "identifier" > T< / span > < span class = "identifier" > value_or< / span > < span class = "special" > (< / span > < span class = "identifier" > U< / span > < span class = "special" > & & < / span > < span class = "identifier" > v< / span > < span class = "special" > )< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_value_or" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
2014-06-16 14:23:34 +02:00
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > U< / span > < span class = "special" > > < / span > < span class = "identifier" > T< / span > < span class = "identifier" > value_or< / span > < span class = "special" > (< / span > < span class = "identifier" > U< / span > < span class = "special" > & & < / span > < span class = "identifier" > v< / span > < span class = "special" > )< / span > < span class = "special" > & & < / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_value_or_move" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
2014-06-18 15:01:52 +02:00
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > F< / span > < span class = "special" > > < / 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" > & < / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.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" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > F< / span > < span class = "special" > > < / 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" > & & < / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_value_or_call_move" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
2014-06-06 23:24:43 +02:00
< 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 = "../boost_optional/reference/detailed_semantics.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 = "../boost_optional/reference/detailed_semantics.html#reference_optional_get_ptr" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
2014-06-14 00:46:24 +02:00
< 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 = "../boost_optional/reference/detailed_semantics.html#reference_optional_operator_bool" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
2014-06-06 23:24:43 +02:00
< 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 = "../boost_optional/reference/detailed_semantics.html#reference_optional_operator_not" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "comment" > // deprecated methods< / span >
< span class = "comment" > // (deprecated)< / span >
< span class = "keyword" > void< / span > < span class = "identifier" > reset< / span > < span class = "special" > ()< / span > < span class = "keyword" > noexcept< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_reset" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "comment" > // (deprecated)< / span >
< span class = "keyword" > void< / span > < span class = "identifier" > reset< / span > < span class = "special" > (< / span > < span class = "identifier" > T< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_reset_value" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "comment" > // (deprecated)< / span >
< span class = "keyword" > bool< / span > < span class = "identifier" > is_initialized< / span > < span class = "special" > ()< / span > < span class = "keyword" > const< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_is_initialized" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "comment" > // (deprecated)< / span >
< span class = "identifier" > T< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > get_value_or< / span > < span class = "special" > (< / span > < span class = "identifier" > T< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "keyword" > default< / span > < span class = "special" > )< / span > < span class = "keyword" > const< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_get_value_or_value" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "special" > };< / span >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "keyword" > bool< / span > < span class = "keyword" > operator< / span > < span class = "special" > ==< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > x< / span > < span class = "special" > ,< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > y< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_operator_compare_equal_optional_optional" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "keyword" > bool< / span > < span class = "keyword" > operator< / span > < span class = "special" > !=< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > x< / span > < span class = "special" > ,< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > y< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_operator_compare_not_equal_optional_optional" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "keyword" > bool< / span > < span class = "keyword" > operator< / span > < span class = "special" > < < / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > x< / span > < span class = "special" > ,< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > y< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_operator_compare_less_optional_optional" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "keyword" > bool< / span > < span class = "keyword" > operator< / span > < span class = "special" > > < / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > x< / span > < span class = "special" > ,< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > y< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_operator_compare_greater_optional_optional" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "keyword" > bool< / span > < span class = "keyword" > operator< / span > < span class = "special" > < =< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > x< / span > < span class = "special" > ,< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > y< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_operator_compare_less_or_equal_optional_optional" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "keyword" > bool< / span > < span class = "keyword" > operator< / span > < span class = "special" > > =< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > x< / span > < span class = "special" > ,< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > y< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_operator_compare_greater_or_equal_optional_optional" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "keyword" > bool< / span > < span class = "keyword" > operator< / span > < span class = "special" > ==< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > x< / 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 = "../boost_optional/reference/detailed_semantics.html#reference_operator_compare_equal_optional_none" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "keyword" > bool< / span > < span class = "keyword" > operator< / span > < span class = "special" > !=< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > x< / 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 = "../boost_optional/reference/detailed_semantics.html#reference_operator_compare_not_equal_optional_none" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "identifier" > make_optional< / span > < span class = "special" > (< / span > < span class = "identifier" > T< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > v< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_make_optional_value" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "identifier" > make_optional< / span > < span class = "special" > (< / span > < span class = "keyword" > bool< / span > < span class = "identifier" > condition< / span > < span class = "special" > ,< / span > < span class = "identifier" > T< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > v< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_make_optional_bool_value" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "identifier" > T< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > get_optional_value_or< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > opt< / span > < span class = "special" > ,< / span > < span class = "identifier" > T< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "keyword" > default< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_get_value_or_value" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "identifier" > T< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > get< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > opt< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_get" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "identifier" > T< / span > < span class = "special" > & < / span > < span class = "identifier" > get< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "special" > & < / span > < span class = "identifier" > opt< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_get" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "identifier" > T< / span > < span class = "keyword" > const< / span > < span class = "special" > *< / span > < span class = "identifier" > get< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > *< / span > < span class = "identifier" > opt< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_get" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "identifier" > T< / span > < span class = "special" > *< / span > < span class = "identifier" > get< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > *< / span > < span class = "identifier" > opt< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_get" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "identifier" > T< / span > < span class = "keyword" > const< / span > < span class = "special" > *< / span > < span class = "identifier" > get_pointer< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > opt< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_get_ptr" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "identifier" > T< / span > < span class = "special" > *< / span > < span class = "identifier" > get_pointer< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "special" > & < / span > < span class = "identifier" > opt< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_optional_get_ptr" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > class< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "keyword" > inline< / span > < span class = "keyword" > void< / span > < span class = "identifier" > swap< / span > < span class = "special" > (< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > & < / span > < span class = "identifier" > x< / span > < span class = "special" > ,< / span > < span class = "identifier" > optional< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > & < / span > < span class = "identifier" > y< / span > < span class = "special" > )< / span > < span class = "special" > ;< / span > < a class = "link" href = "../boost_optional/reference/detailed_semantics.html#reference_swap_optional_optional" > < span class = "inlinemediaobject" > < img src = "../images/callouts/R.png" alt = "R" > < / span > < / a >
< span class = "special" > }< / span > < span class = "comment" > // namespace boost< / span >
< / pre >
< / div >
< / div >
< table xmlns:rev = "http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width = "100%" > < tr >
< td align = "left" > < / td >
< td align = "right" > < div class = "copyright-footer" > Copyright © 2003-2007 Fernando Luis Cacciola Carballal< br > Copyright © 2014 Andrzej Krzemień ski< p >
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 > )
< / p >
< / div > < / td >
< / tr > < / table >
< hr >
< div class = "spirit-nav" >
< a accesskey = "p" href = "../boost_optional/tutorial/type_requirements.html" > < img src = "../../../../../doc/src/images/prev.png" alt = "Prev" > < / a > < a accesskey = "u" href = "../index.html" > < img src = "../../../../../doc/src/images/up.png" alt = "Up" > < / a > < a accesskey = "h" href = "../index.html" > < img src = "../../../../../doc/src/images/home.png" alt = "Home" > < / a > < a accesskey = "n" href = "../boost_optional/reference/detailed_semantics.html" > < img src = "../../../../../doc/src/images/next.png" alt = "Next" > < / a >
< / div >
< / body >
< / html >
