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<?php
/*
Copyright (c) 2016 Michal Čihař <[email protected]>
This file is part of SimpleMath.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
namespace SimpleMath\Expressions;
class Variable extends \SimpleMath\Expression {
public function operate(\SimpleMath\Stack $stack, $variables=array()) {
return isset($variables[$this->value]) ? $variables[$this->value] : 0;
}
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simple-math
