repeat_while

repeat_while is an operation that continuously checks the given condition, and as long as it's true, it invokes the given functor to obtain a sender, and starts it.

Prototype

template <typename C, typename SF>
sender repeat_while(C cond, SF factory);

Requirements

C is a functor that returns a truthy or falsy value. SF is a functor that returns a sender.

Arguments

• cond - the condition to check.
• factory - the functor to call to obtain the sender on every iteration.

Return value

This function returns a sender of unspecified type. The sender does not return any value.

Examples

int i = 0;
async::run(async::repeat_while([&] { return i++ < 5; },
		[] () -> async::result<void> {
			std::cout << "Hi" << std::endl;
			co_return;
		}));

Output:

Hi
Hi
Hi
Hi
Hi