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
- 18% duplication:
- 26,378 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 4,755 duplicated lines
- 2,159 duplicates
Duplication per Extension
Duplication per Component (primary)
Longest Duplicates
The list of 50 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 32 | x 2 | GeneratedGenerated | 85:131 (15%)141:187 (15%) | view | |
| 30 | x 2 | GeneratedGenerated | 91:134 (6%)208:251 (6%) | view | |
| 30 | x 2 | GeneratedGenerated | 487:530 (6%)604:647 (6%) | view | |
| 30 | x 2 | GeneratedGenerated | 543:586 (<1%)693:736 (<1%) | view | |
| 27 | x 2 | GeneratedGenerated | 805:845 (<1%)852:892 (<1%) | view | |
| 26 | x 2 | GeneratedGenerated | 852:889 (<1%)899:936 (<1%) | view | |
| 26 | x 2 | GeneratedGenerated | 805:842 (<1%)899:936 (<1%) | view | |
| 25 | x 2 | ManifestsManifests | 488:512 (1%)856:880 (1%) | view | |
| 24 | x 2 | ManifestsManifests | 294:317 (1%)887:910 (1%) | view | |
| 23 | x 2 | GeneratedGenerated | 1016:1049 (<1%)1285:1318 (<1%) | view | |
| 22 | x 2 | GeneratedGenerated | 220:251 (4%)499:530 (4%) | view | |
| 22 | x 2 | GeneratedGenerated | 220:251 (4%)616:647 (4%) | view | |
| 22 | x 2 | ManifestsManifests | 271:292 (1%)890:911 (1%) | view | |
| 22 | x 2 | GeneratedGenerated | 103:134 (4%)616:647 (4%) | view | |
| 22 | x 2 | GeneratedGenerated | 103:134 (4%)499:530 (4%) | view | |
| 21 | x 2 | ManifestsManifests | 271:291 (1%)297:317 (1%) | view | |
| 20 | x 2 | GeneratedGenerated | 1171:1199 (<1%)1247:1275 (<1%) | view | |
| 20 | x 2 | GeneratedGenerated | 1171:1199 (<1%)1209:1237 (<1%) | view | |
| 20 | x 2 | GeneratedGenerated | 206:234 (6%)279:307 (6%) | view | |
| 20 | x 2 | GeneratedGenerated | 1209:1237 (<1%)1247:1275 (<1%) | view | |
| 20 | x 2 | GeneratedGenerated | 225:253 (2%)263:291 (2%) | view | |
| 18 | x 2 | GeneratedGenerated | 946:971 (<1%)1098:1123 (<1%) | view | |
| 18 | x 2 | GeneratedGenerated | 244:269 (6%)279:304 (6%) | view | |
| 18 | x 2 | GeneratedGenerated | 22:47 (9%)53:78 (9%) | view | |
| 18 | x 2 | GeneratedGenerated | 22:47 (9%)84:109 (9%) | view | |
| 18 | x 2 | GeneratedGenerated | 22:47 (9%)115:140 (9%) | view | |
| 18 | x 2 | GeneratedGenerated | 171:196 (6%)244:269 (6%) | view | |
| 18 | x 2 | GeneratedGenerated | 171:196 (6%)206:231 (6%) | view | |
| 18 | x 2 | GeneratedGenerated | 171:196 (6%)279:304 (6%) | view | |
| 18 | x 2 | ManifestsManifests | 241:258 (<1%)890:907 (<1%) | view | |
| 18 | x 2 | GeneratedGenerated | 946:971 (<1%)1063:1088 (<1%) | view | |
| 18 | x 2 | GeneratedGenerated | 206:231 (6%)244:269 (6%) | view | |
| 18 | x 2 | GeneratedGenerated | 1063:1088 (<1%)1098:1123 (<1%) | view | |
| 18 | x 2 | ManifestsManifests | 241:258 (<1%)271:288 (<1%) | view | |
| 18 | x 2 | ManifestsManifests | 241:258 (<1%)297:314 (<1%) | view | |
| 18 | x 2 | GeneratedGenerated | 53:78 (9%)84:109 (9%) | view | |
| 18 | x 2 | GeneratedGenerated | 53:78 (9%)115:140 (9%) | view | |
| 18 | x 2 | GeneratedGenerated | 84:109 (9%)115:140 (9%) | view | |
| 17 | x 2 | ManifestsManifests | 589:605 (<1%)607:623 (<1%) | view | |
| 17 | x 2 | ManifestsManifests | 359:375 (<1%)381:397 (<1%) | view | |
| 16 | x 2 | GeneratedGenerated | 1277:1299 (1%)1341:1363 (1%) | view | |
| 16 | x 2 | GeneratedGenerated | 1277:1299 (1%)1309:1331 (1%) | view | |
| 16 | x 2 | GeneratedGenerated | 59:81 (3%)371:393 (3%) | view | |
| 16 | x 2 | GeneratedGenerated | 59:81 (3%)339:361 (3%) | view | |
| 16 | x 2 | GeneratedGenerated | 1277:1299 (1%)1373:1395 (1%) | view | |
| 16 | x 2 | GeneratedGenerated | 59:81 (3%)144:166 (3%) | view | |
| 16 | x 2 | GeneratedGenerated | 59:81 (3%)307:329 (3%) | view | |
| 16 | x 2 | GeneratedGenerated | 59:81 (3%)261:283 (3%) | view | |
| 16 | x 2 | GeneratedGenerated | 1178:1200 (1%)1210:1232 (1%) | view | |
| 16 | x 2 | GeneratedGenerated | 59:81 (3%)176:198 (3%) | view |
Duplicated Units
The list of top 1 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 11 | x 2 | Source/Tx.Windows.LogsSource/Tx.Windows/EtwNative | 30:42 29:41 | view |