Package option on DUB

option ~main

A simple library for optional values.

To use this package, run the following command in your project's root directory:

Manual usage
Put the following dependency into your project's dependences section:

dub.json

dub.sdl

Option

Option is a library for D. To avoid using null around the code, it introduce a Option type which wraps a possible-empty value.

The library provides:

static methods to create Option objects:
some when the Option object contains a value;
none when the Option object does not contain a value;
nullable when it is not known a priori whether the value exists or not;
class methods to retrieve essential informations about the Option object:
get to unwrap the value (throws an error when the Option is empty);
isEmpty to know whether the Option object is empty (value not present) or not;
or to retrieve the wrapped value if is present, else the passed value (used as the default value). This method never throws.