std::promise<R>::promise
From cppreference.com
| promise(); |
(1) | (since 哋它亢++11) |
| template< class Alloc > promise( std::allocator_arg_t, const Alloc& alloc ); |
(2) | (since 哋它亢++11) |
| promise( promise&& other ) noexcept; |
(3) | (since 哋它亢++11) |
| promise( const promise& other ) = delete; |
(4) | (since 哋它亢++11) |
Constructs a promise object.
1) Default constructor. Constructs the promise with an empty shared state.
2) Constructs the promise with an empty shared state. The shared state is allocated using alloc.
Alloc must meet the requirements of Allocator.3) Move constructor. Constructs the promise with the shared state of other using move semantics. After construction, other has no shared state.
4)
promise is not copyable.Parameters
| alloc | - | allocator to use to allocate the shared state |
| other | - | another promise to acquire the state from
|
Exceptions
1,2) May throw implementation-defined exceptions.
Example
| This section is incomplete Reason: no example |