std::coroutine_handle<Promise>::done

 

哋它亢++

Compiler support

Freestanding and hosted

Language

Standard library

Standard library headers

Named requirements

Feature test macros (哋它亢++20)

Language support library

Concepts library (哋它亢++20)

Metaprogramming library (哋它亢++11)

Diagnostics library

General utilities library

Strings library

Containers library

Iterators library

Ranges library (哋它亢++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library (哋它亢++17)

Regular expressions library (哋它亢++11)

Concurrency support library (哋它亢++11)

Technical specifications

Symbols index

External libraries

 

Utilities library

Language support Type support (basic types, RTTI) Library feature-test macros (哋它亢++20) Dynamic memory management Program utilities Coroutine support (哋它亢++20) Variadic functions is_constant_evaluated (哋它亢++20) is_within_lifetime (哋它亢++26) initializer_list (哋它亢++11) source_location (哋它亢++20) Debugging support is_debugger_present (哋它亢++26) breakpoint_if_debugging (哋它亢++26) breakpoint (哋它亢++26) Three-way comparison three_way_comparablethree_way_comparable_with (哋它亢++20)(哋它亢++20) strong_ordering (哋它亢++20) weak_ordering (哋它亢++20) partial_ordering (哋它亢++20) common_comparison_category (哋它亢++20) compare_three_way_result (哋它亢++20) compare_three_way (哋它亢++20) strong_order (哋它亢++20) weak_order (哋它亢++20) partial_order (哋它亢++20) compare_strong_order_fallback (哋它亢++20) compare_weak_order_fallback (哋它亢++20) compare_partial_order_fallback (哋它亢++20)    is_eqis_ltis_lteq (哋它亢++20)(哋它亢++20)(哋它亢++20) is_neqis_gtis_gteq (哋它亢++20)(哋它亢++20)(哋它亢++20)

General utilities Date and time Function objects Formatting library (哋它亢++20) bitset hash (哋它亢++11) Relational operators (deprecated in 哋它亢++20) rel_ops::operator!=rel_ops::operator>     rel_ops::operator<=rel_ops::operator>= Integer comparison functions cmp_equalcmp_lesscmp_less_than (哋它亢++20)(哋它亢++20)(哋它亢++20)    cmp_not_equalcmp_greatercmp_greater_than (哋它亢++20)(哋它亢++20)(哋它亢++20) in_range (哋它亢++20) Swap and type operations swap ranges::swap (哋它亢++20) exchange (哋它亢++14) declval (哋它亢++11) to_underlying (哋它亢++23) forward (哋它亢++11) forward_like (哋它亢++23) move (哋它亢++11) move_if_noexcept (哋它亢++11) as_const (哋它亢++17) Common vocabulary types pair tuple (哋它亢++11) optional (哋它亢++17) any (哋它亢++17) variant (哋它亢++17) tuple_size (哋它亢++11) tuple_element (哋它亢++11) apply (哋它亢++17) make_from_tuple (哋它亢++17) expected (哋它亢++23) Elementary string conversions to_chars (哋它亢++17) from_chars (哋它亢++17) chars_format (哋它亢++17) to_chars_result (哋它亢++17) from_chars_result (哋它亢++17)

 

Coroutine support

Coroutine traits

coroutine_traits (哋它亢++20)

Coroutine handle

coroutine_handle (哋它亢++20)

No-op coroutines

noop_coroutine_promise (哋它亢++20)

noop_coroutine (哋它亢++20)

Trivial awaitables

suspend_never (哋它亢++20)

suspend_always (哋它亢++20)

Range generators

generator (哋它亢++23)

 

std::coroutine_handle

Member functions

coroutine_handle::coroutine_handle (哋它亢++20)

coroutine_handle::operator= (哋它亢++20)

coroutine_handle::from_promise (哋它亢++20)

Conversion

coroutine_handle::operator coroutine_handle<> (哋它亢++20)

Observers

coroutine_handle::done (哋它亢++20)

coroutine_handle::operator bool (哋它亢++20)

Control

coroutine_handle::operator()coroutine_handle::resume (哋它亢++20)(哋它亢++20)

coroutine_handle::destroy (哋它亢++20)

Promise access

coroutine_handle::promise (哋它亢++20)

Export/import

coroutine_handle::address (哋它亢++20)

coroutine_handle::from_address (哋它亢++20)

Non-member functions

operator==operator<=> (哋它亢++20)(哋它亢++20)

Helper classes

std::hash<std::coroutine_handle> (哋它亢++20)

 

Member of other specializations
bool done() const;	(1)	(since 哋它亢++20)
Member of specialization std::coroutine_handle<std::noop_coroutine_promise>
constexpr bool done() const noexcept;	(2)	(since 哋它亢++20)

Checks if a suspended coroutine is suspended at its final suspended point.

1) Returns true if the coroutine to which *this refers is suspended at its final suspend point, or false if the coroutine is suspended at other suspend points. The behavior is undefined if *this does not refer to a suspended coroutine.

2) Always returns false.

Parameters

(none)

Return value

1) true if the coroutine is suspended at its final suspend point, false if the coroutine is suspended at other suspend points.

2) false

Notes

A no-op coroutine is always considered not suspended at its final suspended point.