funcsPZ.go
func PadLeftF(c string, n int) func(string) string {
	return func(s string) string {
		return PadLeft(s, c, n)
	}
}
func PadLeftF(c string, n int) func(string) string {
	return func(s string) string {
		return PadLeft(s, c, n)
	}
}
// PadLeftF is the filter form of PadLeft.