execution::start

A customisation point that notifies an operation state object to start its associated operation.

constexpr unspecified start = unspecified;

The name execution::start denotes a customisation point object. The expression execution::start(R) for some subexpression R is expression-equivalent to:

R.start(), if that expression is valid.
Otherwise, start(R), if that expression is valid, with overload resolution performed in a context that includes the declaration void start(); and that does not include a declaration of execution::start.
Otherwise, execution::start(R) is ill-formed.

Requirements

Header: boost/asio/execution/start.hpp

Convenience header: boost/asio/execution.hpp