public function even(array $storage)
    {
        return $this->filter($storage, function ($value)
        {
            return $this->helper->math()->isEven($value);
        });
    }
public function even(array $storage)
    {
        return $this->filter($storage, function ($value)
        {
            return $this->helper->math()->isEven($value);
        });
    }
public function even ( array $ storage ) { return $ this -> filter ( $ storage , function ( $ value ) { return $ this -> helper -> math ( ) -> isEven ( $ value ) ; } ) ; }
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@param array $storage

@return array
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