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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| 15 | View Code Duplication | class PartialFieldSubmission extends SubmittedFormField  | 
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| 16 | { | 
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| 17 | /**  | 
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| 18 | * @var string  | 
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| 19 | */  | 
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| 20 | private static $table_name = 'PartialFieldSubmission';  | 
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| 21 | |||
| 22 | /**  | 
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| 23 | * @var array  | 
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| 24 | */  | 
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| 25 | private static $has_one = [  | 
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| 26 | 'SubmittedForm' => PartialFormSubmission::class,  | 
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| 27 | ];  | 
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| 28 | |||
| 29 | /**  | 
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| 30 | * @param Member $member  | 
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| 31 | * @param array $context  | 
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| 32 | * @return boolean  | 
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| 33 | */  | 
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| 34 | 1 | public function canCreate($member = null, $context = [])  | 
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| 38 | |||
| 39 | /**  | 
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| 40 | * @param Member $member  | 
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| 41 | *  | 
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| 42 | * @return boolean|string  | 
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| 43 | */  | 
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| 44 | 14 | public function canView($member = null)  | 
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| 52 | |||
| 53 | /**  | 
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| 54 | * @param Member $member  | 
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| 55 | *  | 
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| 56 | * @return boolean|string  | 
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| 57 | */  | 
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| 58 | 1 | public function canEdit($member = null)  | 
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| 66 | |||
| 67 | /**  | 
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| 68 | * @param Member $member  | 
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| 69 | *  | 
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| 70 | * @return boolean|string  | 
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| 71 | */  | 
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| 72 | 1 | public function canDelete($member = null)  | 
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| 80 | }  | 
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| 81 |