MBHFramework / structures

    /**

     * @inheritDoc

     */

    public function map(callable $callback)

    {

        $count = count($this);

        $sfa = new SplFixedArray($count);

        for ($i = 0; $i < $count; $i++) {

            $sfa[$i] = $callback($this[$i], $i, $this);

        }

        return new static($sfa);

    }

    /**

     * @inheritDoc

    /**

     * @inheritDoc

     */

    public function filter(callable $callback)

    {

        $count = count($this);

        $sfa = new SplFixedArray($count);

        $newCount = 0;

        foreach ($this as $elem) {

            if ($callback($elem)) {

                $sfa[$newCount++] = $elem;

            }

        }

        $sfa->setSize($newCount);

        return new static($sfa);

    }

    /**

     * @inheritDoc