Places in code with 6 or more lines that are exactly the same.
Intro
- 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.
- 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."
Duplication Overall
- 8% duplication:
- 11,550 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 1,025 duplicated lines
- 52 duplicates
Duplication per Extension
Duplication per Component (primary)
Longest Duplicates
The list of 50 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 40 | x 2 | src/component/contentssrc/component/contents/exploration | 81:136 (19%)53:108 (31%) | view | |
| 25 | x 2 | src/component/contentssrc/component/contents/exploration | 252:280 (12%)163:191 (19%) | view | |
| 25 | x 2 | src/model/modifiersrc/model/modifier/exploration | 157:194 (9%)71:108 (6%) | view | |
| 25 | x 2 | src/model/modifiersrc/model/modifier/exploration | 292:329 (9%)386:423 (6%) | view | |
| 20 | x 2 | src/model/immutablesrc/model/immutable | 58:101 (25%)90:133 (20%) | view | |
| 20 | x 2 | src/model/immutablesrc/model/immutable | 108:133 (25%)153:175 (20%) | view | |
| 17 | x 2 | src/model/modifiersrc/model/modifier/exploration | 87:105 (6%)266:284 (4%) | view | |
| 16 | x 2 | src/component/contentssrc/component/contents/exploration | 112:130 (9%)245:263 (5%) | view | |
| 15 | x 2 | src/model/modifiersrc/model/modifier/exploration | 350:365 (5%)444:459 (3%) | view | |
| 14 | x 2 | src/model/transactionsrc/model/transaction | 27:46 (7%)27:46 (11%) | view | |
| 13 | x 2 | src/model/encodingsrc/model/encoding | 100:112 (5%)117:129 (5%) | view | |
| 13 | x 2 | src/model/transactionsrc/model/transaction | 25:43 (4%)25:43 (11%) | view | |
| 12 | x 2 | src/model/transactionsrc/model/transaction | 27:43 (6%)27:43 (4%) | view | |
| 12 | x 2 | src/component/selectionsrc/component/selection | 132:144 (10%)132:144 (12%) | view | |
| 11 | x 2 | src/component/contentssrc/component/contents/exploration | 53:67 (6%)65:79 (3%) | view | |
| 10 | x 2 | src/model/immutablesrc/model/immutable | 524:536 (2%)558:570 (2%) | view | |
| 10 | x 2 | src/model/modifiersrc/model/modifier | 68:77 (7%)97:106 (7%) | view | |
| 10 | x 2 | src/component/contentssrc/component/contents/exploration | 161:170 (5%)75:84 (10%) | view | |
| 10 | x 2 | src/model/transactionsrc/model/transaction | 80:89 (3%)300:309 (3%) | view | |
| 9 | x 2 | ROOTROOT | 45:53 (4%)59:67 (4%) | view | |
| 9 | x 2 | src/model/modifiersrc/model/modifier/exploration | 130:142 (3%)147:166 (2%) | view | |
| 9 | x 2 | src/model/modifiersrc/model/modifier/exploration | 31:39 (3%)243:251 (2%) | view | |
| 9 | x 2 | src/model/modifiersrc/model/modifier | 59:67 (6%)83:91 (6%) | view | |
| 9 | x 2 | src/model/transactionsrc/model/transaction | 44:53 (14%)24:33 (31%) | view | |
| 9 | x 2 | src/component/handlers/editsrc/component/handlers/edit | 64:72 (5%)202:211 (5%) | view | |
| 9 | x 2 | src/component/selectionsrc/component/selection | 157:165 (3%)218:226 (3%) | view | |
| 8 | x 2 | src/component/contentssrc/component/contents/exploration | 138:147 (3%)109:118 (6%) | view | |
| 7 | x 2 | src/component/selectionsrc/component/selection | 157:163 (3%)176:182 (3%) | view | |
| 7 | x 2 | src/component/handlers/editsrc/component/handlers/edit | 132:138 (5%)146:152 (5%) | view | |
| 7 | x 2 | src/model/immutablesrc/model/immutable | 25:31 (17%)35:41 (17%) | view | |
| 7 | x 2 | src/component/handlers/edit/commandssrc/component/handlers/edit/commands | 26:32 (23%)26:32 (23%) | view | |
| 7 | x 2 | src/model/modifiersrc/model/modifier/exploration | 212:219 (2%)355:362 (1%) | view | |
| 7 | x 2 | website/src/components/DraftEditorExamplewebsite/src/components/DraftEditorExample | 170:176 (4%)194:200 (4%) | view | |
| 7 | x 2 | scripts/jestscripts/jest | 36:42 (13%)44:50 (13%) | view | |
| 7 | x 2 | src/model/immutablesrc/model/immutable | 39:50 (9%)67:78 (7%) | view | |
| 7 | x 2 | src/component/handlers/edit/commandssrc/component/handlers/edit/commands | 40:49 (23%)40:50 (23%) | view | |
| 7 | x 2 | src/model/modifiersrc/model/modifier/exploration | 336:343 (2%)430:437 (1%) | view | |
| 7 | x 2 | src/component/selectionsrc/component/selection | 176:182 (3%)218:224 (3%) | view | |
| 7 | x 2 | src/model/modifiersrc/model/modifier/exploration | 271:280 (2%)365:374 (1%) | view | |
| 6 | x 2 | src/model/transactionsrc/model/transaction | 96:101 (2%)121:127 (2%) | view | |
| 6 | x 2 | src/component/basesrc/component/contents/exploration | 325:332 (1%)97:104 (4%) | view | |
| 6 | x 2 | src/component/contentssrc/component/contents/exploration | 135:140 (3%)267:272 (2%) | view | |
| 6 | x 2 | src/model/transactionsrc/model/transaction | 171:176 (2%)210:215 (2%) | view | |
| 6 | x 2 | src/model/immutablesrc/model/immutable | 700:705 (1%)724:729 (1%) | view | |
| 6 | x 2 | src/component/selectionsrc/component/selection | 256:262 (2%)337:343 (2%) | view | |
| 6 | x 2 | src/model/transactionsrc/model/transaction | 81:87 (9%)40:46 (20%) | view | |
| 6 | x 2 | src/model/modifiersrc/model/modifier/exploration | 42:47 (2%)254:259 (1%) | view | |
| 6 | x 2 | src/component/handlers/edit/commandssrc/component/handlers/edit/commands | 52:60 (16%)39:47 (24%) | view | |
| 6 | x 2 | src/model/transactionsrc/model/transaction | 101:106 (2%)124:129 (2%) | view | |
| 6 | x 2 | src/component/handlers/edit/commandssrc/component/handlers/edit/commands | 28:34 (18%)28:34 (25%) | view |
