Result.php
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Result.php
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	<?php

	namespace Keruald\OmniTools\DataTypes\Result;

	abstract class Result {
	public abstract function isOK () : bool;
	public abstract function isError () : bool;

	public abstract function getValue () : mixed;

	public abstract function map(callable $callable) : self;
	public abstract function mapErr(callable $callable): self;

	/**
	* Returns the result if it is Ok,
	* or the default result if an Err.
	*
	* @param mixed $default The default value
	* @return mixed
	*/
	public abstract function or(Result $default) : self;

	/**
	* Returns the result if it is Ok,
	* otherwise calls the callable and returns the new result.
	*
	* The callable is called only on Err, allowing lazy evaluation.
	* The callable must return a Result.
	*/
	public abstract function orElse(callable $callable) : self;

	/**
	* Returns the value of the result if it is Ok,
	* or the default value if the option is Err.
	*
	* @param mixed $default The default value
	* @return mixed
	*/
	public abstract function getValueOr(mixed $default) : mixed;

	/**
	* Returns the value of the result if it is Ok,
	* or the result of the callable if the option is Err.
	*
	* The callable is called only on Err, allowing lazy evaluation.
	*
	* @param callable $callable A function that returns a default value.
	* @return mixed
	*/
	public abstract function getValueOrElse(callable $callable) : mixed;
	}