Returns a Future that resolves to the result of calling callback(future.result()...) when all of the specified future objects become ready. The callback is invoked using the specified executor.

Parameters:¶

Executor &&executor¶

Executor with which to invoke the callback callback.

Callback &&callback¶

Callback function to be invoked as callback(future.result()...) when all of the future objects become ready. The callback is invoked immediately if all of the future objects are already ready.

Future<FutureValue>... future¶

The Future objects to link.

Dchecks:¶

(!future.null() && ...)

Returns:¶

A Future<UnwrapFutureType<std::remove_cvref_t<U>>>, where U is the return type of the specified callback function.