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Update documentation

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Peter Dimov
2022-06-19 01:28:36 +03:00
parent 5223c94aa9
commit 8fd487d496
1 changed files with 30 additions and 0 deletions
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doc/system/reference.adoc
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@ -1608,6 +1608,12 @@ public:
template<class... A>
constexpr result( in_place_error_t, A&&... a );
template<class T2, class E2>
constexpr result( result<T2, E2> const& r2 );
template<class T2, class E2>
constexpr result( result<T2, E2>&& r2 );
// queries
constexpr bool has_value() const noexcept;
@ -1716,6 +1722,30 @@ Ensures: ::
Remarks: ::
This constructor is only enabled when `std::is_constructible<E, A...>::value` is `true`.
```
template<class T2, class E2>
constexpr result( result<T2, E2> const& r2 );
```
[none]
* {blank}
+
Ensures: ::
If `r2.has_value()` is `true`, `*this` holds the value `T( *r2 )`, otherwise `*this` holds the value `E( r2.error() )`.
Remarks: ::
This constructor is only enabled when `std::is_convertible<T2, T>::value && std::is_convertible<E2, E>::value` is `true`.
```
template<class T2, class E2>
constexpr result( result<T2, E2>&& r2 );
```
[none]
* {blank}
+
Ensures: ::
If `r2.has_value()` is `true`, `*this` holds the value `T( std::move( *r2 ) )`, otherwise `*this` holds the value `E( r2.error() )`.
Remarks: ::
This constructor is only enabled when `std::is_convertible<T2, T>::value && std::is_convertible<E2, E>::value` is `true`.
#### Queries
```