func MustStringFormatter(format string) Formatter {
	f, err := NewStringFormatter(format)
	if err != nil {
		panic("Failed to initialized string formatter: " + err.Error())
	}
	return f
}
func MustStringFormatter(format string) Formatter {
	f, err := NewStringFormatter(format)
	if err != nil {
		panic("Failed to initialized string formatter: " + err.Error())
	}
	return f
}
func MustStringFormatter ( format string ) Formatter { f , err := NewStringFormatter ( format ) if err != nil { panic ( " " + err . Error ( ) ) } return f }
// MustStringFormatter is equivalent to NewStringFormatter with a call to panic
// on error.
MustStringFormatter is equivalent to NewStringFormatter with a call to panic on error .