// MapToString applies mapping function on optional value if it presents
MapToString applies mapping function on optional value if it presents
// MapToString applies mapping function on optional value if it presents
func (i Int) MapToString(f func(int) string) String {
	if f == nil || !i.IsPresent() {
		return String{}
	}
	return OfString(f(i.value))
}
func ( i Int ) MapToString ( f func ( int ) string ) String { if f == nil || ! i . IsPresent ( ) { return String { } } return OfString ( f ( i . value ) ) }
MapToString applies mapping function on optional value if it presents
MapToString applies mapping function on optional value if it presents