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 |
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12 | View Code Duplication | class JobExchangeDeleteMapper extends BaseMapper |
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13 | { |
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15 | 2 | protected function mapMethod() : Method { |
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19 | /** |
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20 | * @param JobExchangeDelete $job |
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21 | * @return Url |
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22 | */ |
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23 | 2 | protected function mapUrl(JobBase $job) : Url { |
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33 | } |
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34 |