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A customisation point that delivers a done notification to a receiver.
constexpr unspecified set_done = unspecified;
The name execution::set_done denotes a customisation point
object. The expression execution::set_done(R)
for some subexpression R
is expression-equivalent to:
R.set_done(),
if that expression is valid. If the function selected does not signal
the receiver R's done
channel, the program is ill-formed with no diagnostic required.
set_done(R),
if that expression is valid, with overload resolution performed in a
context that includes the declaration void
set_done();
and that does not include a declaration of execution::set_done.
If the function selected by overload resolution does not signal the receiver
R's done channel, the
program is ill-formed with no diagnostic required.
execution::set_done(R) is ill-formed.
Header: asio/execution/set_done.hpp
Convenience header: asio/execution.hpp