// 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 (f Float64) MapToString(c func(float64) string) String {
	if c == nil || !f.IsPresent() {
		return String{}
	}
	return OfString(c(f.value))
}
func ( f Float64 ) MapToString ( c func ( float64 ) string ) String { if c == nil || ! f . IsPresent ( ) { return String { } } return OfString ( c ( f . value ) ) }
MapToString applies mapping function on optional value if it presents
MapToString applies mapping function on optional value if it presents