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
- 34% duplication:
- 3,417 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 1,172 duplicated lines
- 138 duplicates
Duplication per Extension
Duplication per Component (primary)
Longest Duplicates
The list of 50 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 77 | x 2 | Chef_ProcessorsChef_Processors | 135:231 (39%)169:265 (33%) | view | |
| 77 | x 2 | Chef_ProcessorsChef_Processors | 169:265 (33%)94:190 (50%) | view | |
| 77 | x 2 | Chef_ProcessorsChef_Processors | 175:271 (33%)140:236 (38%) | view | |
| 77 | x 2 | Chef_ProcessorsChef_Processors | 169:265 (33%)84:180 (54%) | view | |
| 77 | x 2 | Chef_ProcessorsChef_Processors | 135:231 (39%)94:190 (50%) | view | |
| 77 | x 2 | Chef_ProcessorsChef_Processors | 135:231 (39%)140:236 (38%) | view | |
| 77 | x 2 | Chef_ProcessorsChef_Processors | 175:271 (33%)94:190 (50%) | view | |
| 77 | x 2 | Chef_ProcessorsChef_Processors | 175:271 (33%)135:231 (39%) | view | |
| 77 | x 2 | Chef_ProcessorsChef_Processors | 175:271 (33%)84:180 (54%) | view | |
| 77 | x 2 | Chef_ProcessorsChef_Processors | 94:190 (50%)140:236 (38%) | view | |
| 77 | x 2 | Chef_ProcessorsChef_Processors | 84:180 (54%)140:236 (38%) | view | |
| 77 | x 2 | Chef_ProcessorsChef_Processors | 135:231 (39%)84:180 (54%) | view | |
| 77 | x 2 | Chef_ProcessorsChef_Processors | 169:265 (33%)140:236 (38%) | view | |
| 77 | x 2 | Chef_ProcessorsChef_Processors | 84:180 (54%)94:190 (50%) | view | |
| 77 | x 2 | Chef_ProcessorsChef_Processors | 175:271 (33%)169:265 (33%) | view | |
| 41 | x 2 | Chef_ProcessorsChef_Processors | 89:137 (26%)140:188 (20%) | view | |
| 41 | x 2 | Chef_ProcessorsChef_Processors | 135:183 (21%)89:137 (26%) | view | |
| 41 | x 2 | Chef_ProcessorsChef_Processors | 94:142 (26%)89:137 (26%) | view | |
| 41 | x 2 | Chef_ProcessorsChef_Processors | 175:223 (17%)89:137 (26%) | view | |
| 41 | x 2 | Chef_ProcessorsChef_Processors | 84:132 (28%)89:137 (26%) | view | |
| 41 | x 2 | Chef_ProcessorsChef_Processors | 169:217 (18%)89:137 (26%) | view | |
| 18 | x 2 | Chef_ProcessorsChef_Processors | 111:128 (10%)105:122 (9%) | view | |
| 16 | x 2 | Chef_ProcessorsChef_Processors | 21:36 (8%)21:36 (8%) | view | |
| 15 | x 2 | android_sdkandroid_sdk | 42:58 (39%)62:78 (19%) | view | |
| 14 | x 2 | android_sdkandroid_sdk | 94:108 (13%)44:58 (36%) | view | |
| 14 | x 2 | Chef_ProcessorsChef_Processors | 149:163 (9%)197:211 (7%) | view | |
| 14 | x 2 | Chef_ProcessorsChef_Processors | 192:206 (7%)149:163 (9%) | view | |
| 14 | x 2 | Chef_ProcessorsChef_Processors | 226:240 (6%)149:163 (9%) | view | |
| 14 | x 2 | Chef_ProcessorsChef_Processors | 77:90 (7%)83:96 (7%) | view | |
| 14 | x 2 | Chef_ProcessorsChef_Processors | 151:165 (9%)149:163 (9%) | view | |
| 14 | x 2 | Chef_ProcessorsChef_Processors | 141:155 (9%)149:163 (9%) | view | |
| 14 | x 2 | android_sdkandroid_sdk | 94:108 (13%)64:78 (17%) | view | |
| 14 | x 2 | Chef_ProcessorsChef_Processors | 232:246 (6%)149:163 (9%) | view | |
| 12 | x 2 | Chef_ProcessorsChef_Processors | 21:32 (6%)21:32 (6%) | view | |
| 12 | x 2 | Chef_ProcessorsChef_Processors | 21:32 (6%)21:32 (6%) | view | |
| 12 | x 2 | Chef_ProcessorsChef_Processors | 22:33 (5%)21:32 (6%) | view | |
| 12 | x 2 | Chef_ProcessorsChef_Processors | 21:32 (8%)21:32 (6%) | view | |
| 12 | x 2 | Chef_ProcessorsChef_Processors | 21:32 (6%)21:32 (6%) | view | |
| 12 | x 2 | Chef_ProcessorsChef_Processors | 21:32 (6%)20:31 (7%) | view | |
| 12 | x 2 | Chef_ProcessorsChef_Processors | 22:33 (5%)21:32 (8%) | view | |
| 12 | x 2 | Chef_ProcessorsChef_Processors | 22:33 (5%)21:32 (6%) | view | |
| 12 | x 2 | Chef_ProcessorsChef_Processors | 21:32 (6%)21:32 (8%) | view | |
| 12 | x 2 | Chef_ProcessorsChef_Processors | 22:33 (5%)21:32 (6%) | view | |
| 12 | x 2 | Chef_ProcessorsChef_Processors | 21:32 (8%)21:32 (6%) | view | |
| 12 | x 2 | Chef_ProcessorsChef_Processors | 21:32 (6%)21:32 (6%) | view | |
| 12 | x 2 | Chef_ProcessorsChef_Processors | 21:32 (6%)21:32 (6%) | view | |
| 12 | x 2 | Chef_ProcessorsChef_Processors | 20:31 (7%)21:32 (6%) | view | |
| 12 | x 2 | Chef_ProcessorsChef_Processors | 20:31 (7%)21:32 (6%) | view | |
| 12 | x 2 | Chef_ProcessorsChef_Processors | 20:31 (7%)21:32 (6%) | view | |
| 12 | x 2 | Chef_ProcessorsChef_Processors | 21:32 (8%)20:31 (7%) | view |
