guardian/notifications-tooling
Duplication Places in code with 6 or more lines that are exactly the same. |
Duplication Overall
- 14% duplication:
- 26,507 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 3,807 duplicated lines
- 462 duplicates
Duplication per Extension
Duplication per Component (primary)
Longest Duplicates
The list of 50 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 38 | x 2 | src/packages/configsrc/packages/config | 176:213 (9%)217:254 (9%) | view | |
| 25 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 221:248 (3%)207:234 (5%) | view | |
| 25 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 284:311 (3%)268:295 (5%) | view | |
| 25 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 339:366 (3%)323:350 (5%) | view | |
| 22 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 241:265 (3%)304:328 (3%) | view | |
| 22 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 241:265 (3%)359:383 (3%) | view | |
| 22 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 304:328 (3%)359:383 (3%) | view | |
| 22 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 227:251 (4%)288:312 (4%) | view | |
| 22 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 227:251 (4%)343:367 (4%) | view | |
| 22 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 288:312 (4%)343:367 (4%) | view | |
| 20 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 149:171 (2%)241:263 (2%) | view | |
| 20 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 149:171 (2%)304:326 (2%) | view | |
| 20 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 149:171 (2%)359:381 (2%) | view | |
| 20 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 131:153 (4%)227:249 (4%) | view | |
| 20 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 131:153 (4%)288:310 (4%) | view | |
| 20 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 131:153 (4%)343:365 (4%) | view | |
| 19 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 686:704 (2%)733:751 (2%) | view | |
| 19 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 162:182 (2%)144:164 (4%) | view | |
| 18 | x 2 | src/apps/backend/routers/notificationssrc/apps/backend/routers/notifications | 188:207 (2%)256:275 (2%) | view | |
| 18 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 706:725 (2%)753:772 (2%) | view | |
| 18 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 97:115 (2%)85:103 (3%) | view | |
| 17 | x 2 | src/apps/backend/routers/notificationssrc/apps/backend/routers/notifications | 293:313 (2%)377:397 (2%) | view | |
| 17 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 629:645 (2%)686:702 (2%) | view | |
| 17 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 629:645 (2%)733:749 (2%) | view | |
| 16 | x 2 | src/apps/backend/routers/notificationssrc/apps/backend/routers/notifications | 204:221 (2%)372:389 (2%) | view | |
| 16 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 98:114 (2%)112:129 (4%) | view | |
| 16 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 62:78 (14%)61:77 (14%) | view | |
| 15 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 453:467 (2%)561:575 (2%) | view | |
| 15 | x 2 | src/apps/backend/routers/notificationssrc/apps/backend/routers/notifications | 103:118 (4%)130:145 (4%) | view | |
| 15 | x 2 | src/apps/backend/routers/notificationssrc/apps/backend/routers/notifications | 103:118 (4%)157:172 (4%) | view | |
| 15 | x 2 | src/apps/backend/routers/notificationssrc/apps/backend/routers/notifications | 130:145 (4%)157:172 (4%) | view | |
| 15 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 372:388 (2%)356:372 (3%) | view | |
| 14 | x 2 | src/apps/frontend/srcsrc/apps/frontend/src | 854:867 (<1%)879:892 (<1%) | view | |
| 14 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 224:239 (2%)342:357 (2%) | view | |
| 14 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 210:225 (2%)326:341 (2%) | view | |
| 14 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 47:60 (2%)35:48 (2%) | view | |
| 14 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 224:239 (2%)326:341 (2%) | view | |
| 14 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 342:357 (2%)210:225 (2%) | view | |
| 14 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 406:421 (2%)388:403 (2%) | view | |
| 14 | x 2 | src/apps/frontend/src/previewsrc/apps/frontend/src/preview | 48:62 (24%)46:60 (25%) | view | |
| 14 | x 2 | src/packages/database/schemasrc/packages/database/schema | 78:92 (21%)74:87 (18%) | view | |
| 14 | x 2 | src/apps/backend/notification-channels/newslettersrc/apps/backend/notification-channels/newsletter | 154:169 (10%)141:156 (11%) | view | |
| 13 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 57:69 (8%)137:149 (8%) | view | |
| 13 | x 2 | src/apps/frontend/src/sendsrc/apps/frontend/src/send | 142:155 (4%)205:218 (4%) | view | |
| 13 | x 2 | src/apps/frontend/src/sendsrc/apps/frontend/src/send | 172:185 (4%)257:270 (4%) | view | |
| 13 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 69:81 (1%)57:69 (2%) | view | |
| 13 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 254:268 (1%)240:254 (2%) | view | |
| 13 | x 2 | src/apps/backend/routers/notificationssrc/packages/database/repositories | 156:168 (1%)488:500 (1%) | view | |
| 12 | x 2 | src/apps/backend/persistencesrc/apps/backend/persistence | 256:267 (5%)278:289 (5%) | view | |
| 12 | x 2 | src/apps/frontend/src/composesrc/apps/frontend/src/compose | 83:94 (3%)114:125 (3%) | view |
Most Frequent Duplicates
The list of 50 most frequently found duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 6 | x 8 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 163:169 (<1%)145:151 (1%)255:261 (<1%)318:324 (<1%)373:379 (<1%)241:247 (1%)302:308 (1%)357:363 (1%) | view | |
| 6 | x 8 | src/apps/frontend/src/composesrc/apps/frontend/src/historysrc/packages/databasesrc/packages/database/repositoriessrc/apps/backend/routers/notificationssrc/apps/frontend/src/utilssrc/apps/frontend/src/historysrc/apps/frontend/src/compose | 84:89 (1%)48:53 (<1%)24:29 (6%)489:494 (<1%)157:162 (<1%)118:123 (4%)117:122 (<1%)115:120 (1%) | view | |
| 6 | x 8 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 164:171 (<1%)146:153 (1%)256:263 (<1%)319:326 (<1%)374:381 (<1%)242:249 (1%)303:310 (1%)358:365 (1%) | view | |
| 6 | x 8 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 162:168 (<1%)144:150 (1%)254:260 (<1%)317:323 (<1%)372:378 (<1%)240:246 (1%)301:307 (1%)356:362 (1%) | view | |
| 6 | x 8 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 150:156 (<1%)132:138 (1%)242:248 (<1%)305:311 (<1%)360:366 (<1%)228:234 (1%)289:295 (1%)344:350 (1%) | view | |
| 6 | x 8 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 149:155 (<1%)131:137 (1%)241:247 (<1%)304:310 (<1%)359:365 (<1%)227:233 (1%)288:294 (1%)343:349 (1%) | view | |
| 6 | x 7 | src/apps/frontend/src/composesrc/apps/frontend/src/uisrc/apps/frontend/src/sendsrc/apps/frontend/src/uisrc/apps/frontend/src/sendsrc/apps/frontend/src/sendsrc/apps/frontend/src/segment | 56:61 (4%)35:40 (10%)183:188 (3%)34:39 (6%)24:29 (15%)56:61 (5%)51:56 (7%) | view | |
| 6 | x 7 | src/apps/frontend/src/composesrc/apps/frontend/src/historysrc/apps/backend/routers/notificationssrc/packages/database/repositoriessrc/apps/frontend/src/utilssrc/apps/frontend/src/historysrc/apps/frontend/src/compose | 83:88 (1%)47:52 (<1%)156:161 (<1%)488:493 (<1%)117:122 (4%)116:121 (<1%)114:119 (1%) | view | |
| 6 | x 6 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 225:230 (<1%)211:216 (1%)288:293 (<1%)343:348 (<1%)272:277 (1%)327:332 (1%) | view | |
| 6 | x 6 | src/apps/frontend/src/composesrc/apps/frontend/src/uisrc/apps/frontend/src/sendsrc/apps/frontend/src/sendsrc/apps/frontend/src/uisrc/apps/frontend/src/segment | 54:59 (4%)33:38 (10%)22:27 (15%)54:59 (5%)32:37 (6%)49:54 (7%) | view | |
| 6 | x 6 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 344:349 (1%)457:462 (<1%)565:570 (<1%)640:645 (<1%)697:702 (<1%)744:749 (<1%) | view | |
| 6 | x 6 | src/apps/frontend/src/composesrc/apps/frontend/src/uisrc/apps/frontend/src/sendsrc/apps/frontend/src/sendsrc/apps/frontend/src/uisrc/apps/frontend/src/segment | 55:60 (4%)34:39 (10%)23:28 (15%)55:60 (5%)33:38 (6%)50:55 (7%) | view | |
| 6 | x 6 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 224:229 (<1%)210:215 (1%)287:292 (<1%)342:347 (<1%)271:276 (1%)326:331 (1%) | view | |
| 6 | x 6 | src/apps/frontend/src/composesrc/apps/frontend/src/layoutsrc/apps/frontend/srcsrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 14:19 (8%)24:29 (7%)109:114 (4%)633:638 (<1%)690:695 (<1%)737:742 (<1%) | view | |
| 6 | x 6 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 259:265 (<1%)245:251 (1%)306:312 (1%)361:367 (1%)322:328 (<1%)377:383 (<1%) | view | |
| 6 | x 6 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 227:234 (<1%)213:220 (1%)290:297 (<1%)345:352 (<1%)274:281 (1%)329:336 (1%) | view | |
| 6 | x 6 | src/apps/frontend/src/composesrc/apps/frontend/src/layoutsrc/apps/frontend/srcsrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 15:20 (8%)25:30 (7%)110:115 (4%)634:639 (<1%)691:696 (<1%)738:743 (<1%) | view | |
| 6 | x 6 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 258:264 (<1%)244:250 (1%)305:311 (1%)360:366 (1%)321:327 (<1%)376:382 (<1%) | view | |
| 6 | x 6 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 226:233 (<1%)212:219 (1%)289:296 (<1%)344:351 (<1%)273:280 (1%)328:335 (1%) | view | |
| 6 | x 5 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 467:472 (<1%)583:588 (<1%)655:660 (<1%)706:711 (<1%)753:758 (<1%) | view | |
| 6 | x 5 | src/apps/frontend/src/historysrc/apps/frontend/src/historysrc/apps/frontend/src/historysrc/apps/frontend/src/historysrc/apps/frontend/src/history | 352:357 (<1%)655:660 (<1%)797:802 (<1%)927:932 (<1%)949:954 (<1%) | view | |
| 6 | x 5 | src/apps/backend/routers/notificationssrc/apps/backend/routers/notificationssrc/apps/backend/routers/notificationssrc/apps/backend/routers/notificationssrc/apps/backend/routers/notifications | 211:218 (<1%)295:302 (<1%)379:386 (<1%)436:443 (<1%)471:478 (<1%) | view | |
| 6 | x 5 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 159:164 (<1%)251:256 (<1%)314:319 (<1%)369:374 (<1%)403:408 (<1%) | view | |
| 6 | x 5 | src/apps/frontend/src/historysrc/apps/frontend/src/historysrc/apps/frontend/src/historysrc/apps/frontend/src/historysrc/apps/frontend/src/history | 353:358 (<1%)656:661 (<1%)798:803 (<1%)928:933 (<1%)950:955 (<1%) | view | |
| 6 | x 5 | src/apps/frontend/src/historysrc/apps/frontend/src/historysrc/apps/frontend/src/historysrc/apps/frontend/src/historysrc/apps/frontend/src/history | 182:187 (1%)206:211 (1%)232:237 (1%)256:261 (1%)282:287 (1%) | view | |
| 6 | x 5 | src/apps/frontend/src/composesrc/apps/frontend/src/historysrc/apps/frontend/src/historysrc/apps/frontend/src/historysrc/apps/frontend/src/history | 367:372 (1%)354:359 (<1%)799:805 (<1%)929:934 (<1%)951:956 (<1%) | view | |
| 6 | x 5 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 141:146 (1%)237:242 (1%)298:303 (1%)353:358 (1%)385:390 (1%) | view | |
| 6 | x 5 | src/packages/database/repositoriessrc/packages/databasesrc/apps/backend/routers/notificationssrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 491:496 (<1%)26:31 (6%)159:164 (<1%)86:91 (1%)117:122 (1%) | view | |
| 6 | x 5 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 366:371 (1%)664:669 (<1%)404:409 (1%)714:719 (<1%)761:766 (<1%) | view | |
| 6 | x 5 | src/packages/database/repositoriessrc/packages/databasesrc/apps/backend/routers/notificationssrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 490:495 (<1%)25:30 (6%)158:163 (<1%)85:90 (1%)116:121 (1%) | view | |
| 6 | x 4 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 160:166 (<1%)252:258 (<1%)315:321 (<1%)370:376 (<1%) | view | |
| 6 | x 4 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 155:160 (<1%)247:252 (<1%)310:315 (<1%)365:370 (<1%) | view | |
| 6 | x 4 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 229:236 (<1%)215:222 (1%)331:338 (1%)347:354 (<1%) | view | |
| 6 | x 4 | src/apps/backend/routers/notificationssrc/apps/backend/routers/notificationssrc/apps/backend/routers/notificationssrc/apps/backend/routers/notifications | 68:73 (1%)105:110 (1%)132:137 (1%)159:164 (1%) | view | |
| 6 | x 4 | src/packages/configsrc/packages/configsrc/packages/configsrc/packages/config | 123:128 (1%)155:160 (1%)198:203 (1%)239:244 (1%) | view | |
| 6 | x 4 | src/apps/frontend/src/latest-contentsrc/apps/frontend/src/layoutsrc/apps/frontend/src/layoutsrc/apps/frontend/src/compose | 157:164 (2%)11:17 (33%)12:18 (33%)188:194 (1%) | view | |
| 6 | x 4 | src/apps/backend/routers/notificationssrc/apps/backend/routers/notificationssrc/apps/backend/routers/notificationssrc/apps/backend/routers/notifications | 71:76 (1%)108:113 (1%)135:140 (1%)162:167 (1%) | view | |
| 6 | x 4 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 228:235 (<1%)214:221 (1%)346:353 (<1%)330:337 (1%) | view | |
| 6 | x 4 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 161:167 (<1%)253:259 (<1%)316:322 (<1%)371:377 (<1%) | view | |
| 6 | x 4 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 182:188 (1%)200:206 (1%)239:245 (1%)230:236 (1%) | view | |
| 6 | x 4 | src/apps/backend/routers/notificationssrc/apps/backend/routers/notificationssrc/apps/backend/routers/notificationssrc/apps/backend/routers/notifications | 70:75 (1%)107:112 (1%)134:139 (1%)161:166 (1%) | view | |
| 6 | x 4 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 139:144 (1%)235:240 (1%)296:301 (1%)351:356 (1%) | view | |
| 6 | x 4 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 152:158 (<1%)244:250 (<1%)307:313 (<1%)362:368 (<1%) | view | |
| 6 | x 4 | src/apps/frontend/src/historysrc/apps/frontend/src/historysrc/apps/frontend/src/historysrc/apps/frontend/src/history | 43:49 (6%)35:41 (6%)35:41 (7%)34:40 (6%) | view | |
| 6 | x 4 | src/apps/frontend/src/hookssrc/apps/frontend/src/segmentsrc/apps/frontend/src/hookssrc/apps/frontend/src/hooks | 15:21 (28%)42:48 (20%)139:145 (4%)50:56 (19%) | view | |
| 6 | x 4 | src/apps/frontend/src/hookssrc/apps/frontend/src/segmentsrc/apps/frontend/src/hookssrc/apps/frontend/src/hooks | 13:18 (28%)34:45 (20%)137:142 (4%)42:53 (19%) | view | |
| 6 | x 4 | src/apps/backend/routers/notificationssrc/apps/backend/routers/notificationssrc/apps/backend/routers/notificationssrc/apps/backend/routers/notifications | 66:71 (1%)103:108 (1%)130:135 (1%)157:162 (1%) | view | |
| 6 | x 4 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 156:161 (<1%)248:253 (<1%)311:316 (<1%)366:371 (<1%) | view | |
| 6 | x 4 | src/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 142:148 (1%)238:244 (1%)299:305 (1%)354:360 (1%) | view | |
| 6 | x 4 | src/apps/frontend/src/composesrc/apps/frontend/src/layoutsrc/apps/frontend/src/composesrc/apps/frontend/src/compose | 632:637 (<1%)23:28 (7%)689:694 (<1%)736:741 (<1%) | view |
Duplicated Units
The list of top 3 duplicated units.
About This Analysis
- For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
- Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
- You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.
Learn more...
- To learn more about duplications and techniques for eliminating duplication, Sokrates recommends the following resources:
- Avoid Repetition, MartinFlower.com (IEEE Software article)
- Refactoring duplicated code, sourcemaking.com
- Beck Design Rules, MartinFowler.com
- DRY (Don't Repeat Yourself) Principle, Wikipedia
- The Cut-and-Paste Programming Software Development Anti-Pattern, sourcemaking.com
- Code Smells / Duplicated Code, Jeff Atwood, codinghorror.com:
- "Duplicated code is the bane of software development. Stamp out duplication whenever possible. You should always be on the lookout for more subtle cases of near-duplication, too. Don't Repeat Yourself!"
- Reducing Coupling, MartinFlower.com (IEEE Software article):
- "There are several ways to describe coupling, but it boils down to this: If changing one module in a program requires changing another module, then coupling exists. ... Duplication always implies coupling, because changing one piece of duplicate code implies changing the other."