# std::execution::schedule, std::execution::schedule_result_t

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< cpp‎ | execution

Defined in header `<execution>` |  |
struct schedule_t { /*unspecified*/ }; | (1) | (since C++26)
inline constexpr schedule_t schedule{}; | (2) | (since C++26) (customization point object)
Call signature |  |
execution::sender auto schedule( execution::scheduler auto sch ); |  | (since C++26)
Helper result types |  |
template< execution::scheduler Sch > using schedule_result_t = decltype(schedule( std::declval <Sch>())); | (3) | (since C++26)

Obtains a sender describing the start of a task graph on the provided scheduler.

For a subexpression sch, the expression schedule(sch) is expression-equivalent to sch.schedule().

### Customization point objects

The name `execution::schedule` 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::schedule_t`.

All instances of `execution::schedule_t` are equal. The effects of invoking different instances of type `execution::schedule_t` on the same arguments are equivalent, regardless of whether the expression denoting the instance is an lvalue or rvalue, and is const-qualified or not (however, a volatile-qualified instance is not required to be invocable). Thus, `execution::schedule` can be copied freely and its copies can be used interchangeably.

Given a set of types `Args...`, if std::declval <Args>()... meet the requirements for arguments to `execution::schedule` above, `execution::schedule_t` models

- std::invocable <execution::schedule_t, Args...>,
- std::invocable <const execution::schedule_t, Args...>,
- std::invocable <execution::schedule_t&, Args...>, and
- std::invocable <const execution::schedule_t&, Args...>.

Otherwise, no function call operator of `execution::schedule_t` participates in overload resolution.

### Example

| This section is incomplete Reason: no example

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