std::coroutine_handle<Promise>::coroutine_handle
constexpr coroutine_handle() noexcept; |
(1) | (since C++20) |
constexpr coroutine_handle( std::nullptr_t ) noexcept; |
(2) | (since C++20) |
coroutine_handle( const coroutine_handle& other ) = default; |
(3) | (since C++20) |
coroutine_handle( coroutine_handle&& other ) = default; |
(4) | (since C++20) |
Creates a coroutine_handle that does not refer a coroutine, or copies a coroutine_handle.
1-2) Initializes the underlying address to
nullptr. After construction,
address() returns
nullptr, and the
coroutine_handle does not refer a coroutine. These constructors are not declared for the specialization
std::coroutine_handle<std::noop_coroutine_promise>.
3-4) Copies the underlying address. The copy constructor and move constructor are equivalent to implicitly declared ones.
Parameters
| other | - | another coroutine_handle to copy |
Notes
std::coroutine_handle<std::noop_coroutine_promise> is neither default constructible nor constructible from std::nullptr_t. std::noop_coroutine can be used to create a new std::coroutine_handle<std::noop_coroutine_promise>.
Static member functions from_promise and from_address can also create a coroutine_handle.
See also
|
[static] (C++20)
|
creates a coroutine_handle from the promise object of a coroutine (public static member function) |
|
[static] (C++20)
|
imports a coroutine from a pointer (public static member function) |
|
(C++20)
|
creates a coroutine handle that has no observable effects when resumed or destroyed (function) |
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