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:
- 5,394 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 1,845 duplicated lines
- 1,909 duplicates
Duplication per Extension
Duplication per Component (primary)
Longest Duplicates
The list of 50 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 26 | x 2 | languageslanguages | 59:87 (29%)57:85 (30%) | view | |
| 23 | x 2 | languageslanguages | 62:86 (26%)60:84 (27%) | view | |
| 23 | x 2 | languageslanguages | 56:80 (29%)59:83 (28%) | view | |
| 21 | x 2 | languageslanguages | 60:82 (25%)60:82 (25%) | view | |
| 18 | x 2 | languageslanguages | 66:84 (21%)68:86 (20%) | view | |
| 18 | x 2 | languageslanguages | 67:85 (21%)66:84 (21%) | view | |
| 18 | x 2 | languageslanguages | 64:82 (22%)66:84 (21%) | view | |
| 18 | x 2 | languageslanguages | 69:87 (20%)68:86 (21%) | view | |
| 18 | x 2 | languageslanguages | 67:85 (21%)68:86 (21%) | view | |
| 18 | x 2 | languageslanguages | 67:85 (21%)68:86 (20%) | view | |
| 18 | x 2 | languageslanguages | 64:82 (22%)67:85 (21%) | view | |
| 18 | x 2 | languageslanguages | 67:85 (21%)68:86 (20%) | view | |
| 18 | x 2 | languageslanguages | 66:84 (21%)68:86 (21%) | view | |
| 18 | x 2 | languageslanguages | 65:83 (21%)68:86 (20%) | view | |
| 18 | x 2 | languageslanguages | 68:86 (20%)68:86 (20%) | view | |
| 18 | x 2 | languageslanguages | 68:86 (20%)66:84 (21%) | view | |
| 18 | x 2 | languageslanguages | 67:85 (21%)67:85 (21%) | view | |
| 18 | x 2 | languageslanguages | 64:82 (21%)68:86 (20%) | view | |
| 18 | x 2 | languageslanguages | 66:84 (21%)66:84 (21%) | view | |
| 18 | x 2 | languageslanguages | 65:83 (21%)67:85 (21%) | view | |
| 18 | x 2 | languageslanguages | 66:84 (21%)68:86 (21%) | view | |
| 18 | x 2 | languageslanguages | 66:84 (21%)68:86 (21%) | view | |
| 18 | x 2 | languageslanguages | 69:87 (20%)66:84 (21%) | view | |
| 18 | x 2 | languageslanguages | 66:84 (21%)66:84 (21%) | view | |
| 18 | x 2 | languageslanguages | 70:88 (20%)65:83 (21%) | view | |
| 18 | x 2 | languageslanguages | 67:85 (21%)69:87 (20%) | view | |
| 18 | x 2 | languageslanguages | 64:82 (22%)62:80 (23%) | view | |
| 18 | x 2 | languageslanguages | 66:84 (21%)65:83 (21%) | view | |
| 18 | x 2 | languageslanguages | 65:83 (21%)67:85 (21%) | view | |
| 18 | x 2 | languageslanguages | 67:85 (21%)62:80 (23%) | view | |
| 18 | x 2 | languageslanguages | 66:84 (21%)65:83 (21%) | view | |
| 18 | x 2 | languageslanguages | 70:88 (20%)67:85 (21%) | view | |
| 18 | x 2 | languageslanguages | 69:87 (20%)66:84 (21%) | view | |
| 18 | x 2 | languageslanguages | 67:85 (21%)70:88 (20%) | view | |
| 18 | x 2 | languageslanguages | 65:83 (21%)66:84 (21%) | view | |
| 18 | x 2 | languageslanguages | 65:83 (21%)64:82 (21%) | view | |
| 18 | x 2 | languageslanguages | 65:83 (21%)65:83 (21%) | view | |
| 18 | x 2 | languageslanguages | 67:85 (21%)65:83 (21%) | view | |
| 18 | x 2 | languageslanguages | 65:83 (21%)66:84 (21%) | view | |
| 18 | x 2 | languageslanguages | 69:87 (20%)67:85 (21%) | view | |
| 18 | x 2 | languageslanguages | 68:86 (20%)65:83 (21%) | view | |
| 18 | x 2 | languageslanguages | 67:85 (21%)68:86 (20%) | view | |
| 18 | x 2 | languageslanguages | 66:84 (21%)67:85 (21%) | view | |
| 18 | x 2 | languageslanguages | 65:83 (21%)68:86 (21%) | view | |
| 18 | x 2 | languageslanguages | 65:83 (21%)66:84 (21%) | view | |
| 18 | x 2 | languageslanguages | 69:87 (20%)65:83 (21%) | view | |
| 18 | x 2 | languageslanguages | 65:83 (21%)66:84 (21%) | view | |
| 18 | x 2 | languageslanguages | 64:82 (21%)67:85 (21%) | view | |
| 18 | x 2 | languageslanguages | 65:83 (21%)66:84 (21%) | view | |
| 18 | x 2 | languageslanguages | 64:82 (22%)65:83 (21%) | view |
Duplicated Units
The list of top 1 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 6 | x 2 | integrationintegration | 35:42 35:42 | view |
