public function exists(string $column): bool
    {
        if (trim($column) === '') {
            throw new Exception\InvalidArgumentException(__METHOD__ . ' Column name cannot be empty');
        }

        return $this->columns->offsetExists($column);
    }
public function exists(string $column): bool
    {
        if (trim($column) === '') {
            throw new Exception\InvalidArgumentException(__METHOD__ . ' Column name cannot be empty');
        }

        return $this->columns->offsetExists($column);
    }
public function exists ( string $ column ) : bool { if ( trim ( $ column ) === '' ) { throw new Exception \ InvalidArgumentException ( __METHOD__ . ' Column name cannot be empty' ) ; } return $ this -> columns -> offsetExists ( $ column ) ; }
Tells whether a column exists.

@throws Exception\InvalidArgumentException
Tells whether a column exists .