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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9 | trait ApiSetTrait |
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10 | { |
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11 | /** |
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12 | * @param Request $request |
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13 | * @return mixed |
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14 | */ |
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15 | abstract function dispatch(Request $request); |
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16 | |||
17 | /** |
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18 | * @override |
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19 | * @inheritDoc |
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20 | */ |
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21 | public function sScan($key, $cursor, array $options = []) |
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30 | |||
31 | /** |
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32 | * @override |
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33 | * @inheritDoc |
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34 | */ |
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35 | public function sInter(...$keys) |
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43 | |||
44 | /** |
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45 | * @override |
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46 | * @inheritDoc |
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47 | */ |
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48 | public function sInterStore($dst, ...$keys) |
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57 | |||
58 | /** |
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59 | * @override |
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60 | * @inheritDoc |
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61 | */ |
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62 | public function sIsMember($key, $member) |
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70 | |||
71 | /** |
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72 | * @override |
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73 | * @inheritDoc |
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74 | */ |
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75 | public function sLowLog($command, array $args = []) |
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83 | |||
84 | /** |
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85 | * @override |
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86 | * @inheritDoc |
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87 | */ |
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88 | View Code Duplication | public function sMembers($key) |
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96 | |||
97 | /** |
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98 | * @override |
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99 | * @inheritDoc |
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100 | */ |
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101 | public function sMove($src, $dst, $members) |
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110 | |||
111 | /** |
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112 | * @override |
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113 | * @inheritDoc |
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114 | */ |
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115 | View Code Duplication | public function sPop($key, $count) |
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123 | |||
124 | /** |
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125 | * @override |
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126 | * @inheritDoc |
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127 | */ |
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128 | View Code Duplication | public function sRandMember($key, $count) |
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136 | |||
137 | /** |
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138 | * @override |
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139 | * @inheritDoc |
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140 | */ |
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141 | public function sRem($key, ...$members) |
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150 | |||
151 | /** |
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152 | * @override |
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153 | * @inheritDoc |
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154 | */ |
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155 | public function sUnion(...$keys) |
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163 | |||
164 | /** |
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165 | * @override |
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166 | * @inheritDoc |
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167 | */ |
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168 | public function sUnionStore($dst, ...$keys) |
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177 | |||
178 | /** |
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179 | * @override |
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180 | * @inheritDoc |
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181 | */ |
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182 | public function sWapBb($opt, $dst, ...$keys) |
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191 | |||
192 | /** |
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193 | * @override |
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194 | * @inheritDoc |
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195 | */ |
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196 | public function sAdd($key, ...$members) |
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205 | |||
206 | /** |
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207 | * @override |
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208 | * @inheritDoc |
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209 | */ |
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210 | View Code Duplication | public function sCard($key) |
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218 | |||
219 | /** |
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220 | * @override |
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221 | * @inheritDoc |
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222 | */ |
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223 | public function sDiff(...$keys) |
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231 | |||
232 | /** |
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233 | * @override |
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234 | * @inheritDoc |
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235 | */ |
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236 | public function sDiffStore($dst, ...$keys) |
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245 | } |
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246 |
Adding explicit visibility (
private
,protected
, orpublic
) is generally recommend to communicate to other developers how, and from where this method is intended to be used.