Utilities library
Language support
Type support (basic types, RTTI)
Library feature-test macros (C++20)
Dynamic memory management
Program utilities
Coroutine support (C++20)
Variadic functions
Debugging support
Three-way comparison
General utilities
Date and time
Function objects
Formatting library (C++20)
Relational operators (deprecated in C++20)
Integer comparison functions
Swap and type operations
Common vocabulary types
Elementary string conversions

Coroutine support
Coroutine traits
Coroutine handle
No-op coroutines
Trivial awaitables
Range generators
static coroutine_handle from_promise( Promise& p );
(since C++20)

Creates a coroutine_handle from the promise object of a coroutine. The created coroutine_handle refers the coroutine, and promise() returns a reference to p.

The behavior is undefined if p is not a reference to a promise object. This function is only provided for the primary template, i.e. specializations std::coroutine_handle<> and std::coroutine_handle<std::noop_coroutine_promise> do not have this function.


[edit] Parameters

p - promise object of a coroutine to refer

[edit] Return value

A coroutine_handle referring the given coroutine.

[edit] Example

[edit] See also

constructs a coroutine_handle object
(public member function) [edit]
[static] (C++20)
imports a coroutine from a pointer
(public static member function) [edit]
creates a coroutine handle that has no observable effects when resumed or destroyed
(function) [edit]