std::execution::just
Defined in header <execution>
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struct just_t { /*unspecified*/ }; |
(1) | (since C++26) |
inline constexpr just_t just{}; |
(2) | (since C++26) (customization point object) |
Call signature |
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execution::
sender
auto just(
auto
&&... values
)
;
|
(since C++26) | |
A sender factory that returns a sender which completes immediately by calling the receiver’s set_value()
Let ts be a pack of subexpressions. The expression just(ts...) is expression-equivalent to /*make-sender*/(just, /*product-type*/(ts...))
Customization point objects
The name execution::just denotes a customization point object, which is a const function object of a literal
semiregular class type. The cv-unqualified version of its type is a tag type denoted as execution::just_t
All instances of execution::just_t are equal. The effects of invoking different instances of type execution::just_t
execution::just
Given a set of types Args..., if
std::declval
<Args>
(
)
meet the requirements for arguments to execution::just above, execution::just_t models
- std::invocable <execution:: just_t, Args...>
- std::invocable < const execution:: just_t, Args...>
- std::invocable <execution:: just_t &, Args...>
-
std::invocable
<
const execution::
just_t
&, Args...>
.
Otherwise, no function call operator of execution::just_t participates in overload resolution.
Example
| This section is incomplete Reason: no example |