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Filename : SelfComparable.php

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<?php

namespace PleskAdvisor\Icecave\Parity;

/**
 * An object that can compare itself to other objects of exactly the same type.
 */
interface SelfComparable
{
    /**
     * Compare this object with another object of the same type, yielding a
     * result according to the following table:
     *
     * +--------------------+---------------+
     * | Condition          | Result        |
     * +--------------------+---------------+
     * | $this == $value    | $result === 0 |
     * | $this < $value     | $result < 0   |
     * | $this > $value     | $result > 0   |
     * +--------------------+---------------+
     *
     * @param object $value The object to compare.
     *
     * @return int                              The result of the comparison.
     * @throws Exception\NotComparableException if $value is not the same type as $this.
     */
    public function compare($value) : int;
}