public function walk()
    {
        if ($this->index < 0) {
            return $this->begin();
        }

        if (!$this->grid->hasColumn($this->index + 1)) {
            return $this->end() . $this->begin();
        }

        return $this->column();
    }
public function walk()
    {
        if ($this->index < 0) {
            return $this->begin();
        }

        if (!$this->grid->hasColumn($this->index + 1)) {
            return $this->end() . $this->begin();
        }

        return $this->column();
    }
public function walk ( ) { if ( $ this -> index < 0 ) { return $ this -> begin ( ) ; } if ( ! $ this -> grid -> hasColumn ( $ this -> index + 1 ) ) { return $ this -> end ( ) . $ this -> begin ( ) ; } return $ this -> column ( ) ; }
Automatically walk throw the grid.

@return string
Automatically walk throw the grid .