class.ilMailDiffAddressList.php

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<?php
/* Copyright (c) 1998-2018 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilMailDiffAddressList implements \ilMailAddressList
{
    protected $left;

    protected $right;

    public function __construct(\ilMailAddressList $left, \ilMailAddressList $right)
    {
        $this->left = $left;
        $this->right = $right;
    }


    public function value() : array
    {
        $leftAddresses = $this->left->value();
        $rightAddresses = $this->right->value();

        return array_diff($leftAddresses, $rightAddresses);
    }
}