Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
1 | <?php |
||
13 | View Code Duplication | class Month extends FunctionNode |
|
14 | { |
||
15 | public $dateExpression; |
||
16 | |||
17 | public function parse(Parser $parser) |
||
24 | |||
25 | public function getSql(SqlWalker $sqlWalker) |
||
29 | } |
||
30 |