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Example code of mareg/option

Informations about the package option

Option

Strongly typed alternative to null. The Option type in this package is based off of the Option typeclass from Scala and the Maybe monad from Haskell.

Option itself is just an interface. Two classes in this package implement the Option interface and they are Some and None. The convention is to have functions return Option types and it will either contain Some value or None at all. This creates a type safe alternative to returning null in the absence of a value.

In addition to the added type safety, the Option type is monadic, so Option types are highly composable. This allows you to eliminate a lot of the typical null checking boiler plate code you'd normally have to write and encourages you to write in a more expressive style.

Documentation

This library implements two classes that both implement the Option interface. These classes are Some and None.

The Option interface is as follows

Developing

This section is really only useful if you plan on contributing to this project. You're going to need composer in the root directory so you can fetch all the projects dependencies and to setup the autoloader.

Testing

This section assumes you already followed the steps in Developing

All versions of option with dependencies

PHP Build Version
Package Version
Requires mareg/either Version 0.2.*
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