Function After

function/function.go:16–27

After creates a function that invokes func once it's called n or more times. Play: https://go.dev/play/p/8mQhkFmsgqs

(n int, fn any)

// After creates a function that invokes func once it's called n or more times.
// Play: https://go.dev/play/p/8mQhkFmsgqs
func After(n int, fn any) func(args ...any) []reflect.Value {
	// Catch programming error while constructing the closure
	mustBeFunction(fn)

	return func(args ...any) []reflect.Value {
		n--
		if n < 1 {
			return unsafeInvokeFunc(fn, args...)
		}
		return nil
	}
}

// Before creates a function that invokes func once it's called less than n times.
// Play: https://go.dev/play/p/0HqUDIFZ3IL