- yield! #!optional valprocedure
Exits the current coroutine returning control to the calling procedure. Returns the optional value val, which defaults to (void). An error is singled if yield! is called outside of a coroutine procedure.
Exits the current coroutine returning control to the calling procedure. Returns the optional value val, which defaults to (void). An error is singled if yield! is called outside of a coroutine procedure.