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:
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| 17 | View Code Duplication | class PostCommandEvent extends Event |
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| 18 | { |
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| 19 | /** @var CommandInterface */ |
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| 20 | private $command; |
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| 21 | |||
| 22 | /** @var ResponseInterface */ |
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| 23 | private $response; |
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| 24 | |||
| 25 | /** |
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| 26 | * |
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| 27 | * @param CommandInterface $command |
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| 28 | * @param ResponseInterface $response |
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| 29 | */ |
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| 30 | public function __construct(CommandInterface $command, ResponseInterface $response) |
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| 35 | |||
| 36 | /** |
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| 37 | * |
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| 38 | * @return CommandInterface |
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| 39 | */ |
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| 40 | public function getCommand() |
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| 44 | |||
| 45 | /** |
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| 46 | * |
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| 47 | * @return ResponseInterface |
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| 48 | */ |
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| 49 | public function getResponse() |
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| 53 | } |
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| 54 |