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
- 53% duplication:
- 941 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 506 duplicated lines
- 135 duplicates
Duplication per Extension
Duplication per Component (primary)
Duplication Between Components (50+ lines)
Open 3D force graph...
Show more details on duplication between components...
From Component
--> To Component
Duplicated
Lines
File Pairs
Details
installation (47%)
--> installation/postgres (88%)
252
3 file pairs
details...
| From Component --> To Component |
Duplicated Lines |
File Pairs | Details |
|---|---|---|---|
| installation (47%) --> installation/postgres (88%) |
252 | 3 file pairs | details... |
Longest Duplicates
The list of 50 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 27 | x 2 | installation/kubernetesinstallation/kubernetes | 73:99 (20%)73:99 (20%) | view | |
| 21 | x 2 | installation/kubernetesinstallation/kubernetes | 101:121 (16%)72:92 (21%) | view | |
| 21 | x 2 | installation/kubernetesinstallation/kubernetes | 24:44 (15%)24:44 (16%) | view | |
| 20 | x 2 | installation/kubernetesinstallation/kubernetes | 100:119 (14%)102:121 (15%) | view | |
| 20 | x 2 | installation/kubernetesinstallation/kubernetes | 100:119 (14%)73:92 (20%) | view | |
| 20 | x 2 | installationinstallation/postgres | 76:96 (13%)76:96 (13%) | view | |
| 20 | x 2 | installationinstallation/postgres | 54:74 (13%)54:74 (13%) | view | |
| 19 | x 2 | installationinstallation/postgres | 98:117 (13%)98:117 (13%) | view | |
| 19 | x 2 | installationinstallation/postgres | 33:52 (13%)33:52 (13%) | view | |
| 19 | x 2 | installationinstallation/postgres | 119:138 (13%)119:138 (13%) | view | |
| 16 | x 2 | installationinstallation/postgres | 140:156 (11%)140:156 (11%) | view | |
| 15 | x 2 | installation/kubernetesinstallation/kubernetes | 125:139 (11%)122:136 (11%) | view | |
| 13 | x 2 | installationinstallation | 51:63 (9%)73:85 (9%) | view | |
| 13 | x 2 | installation/postgresinstallation/postgres | 51:63 (9%)73:85 (9%) | view | |
| 12 | x 2 | installationinstallation | 28:39 (8%)25:36 (31%) | view | |
| 12 | x 2 | installation/postgresinstallation/postgres | 95:106 (8%)137:148 (8%) | view | |
| 12 | x 2 | installationinstallation | 95:106 (8%)116:127 (8%) | view | |
| 12 | x 2 | installation/postgresinstallation/postgres | 95:106 (8%)116:127 (8%) | view | |
| 12 | x 2 | installationinstallation | 95:106 (8%)137:148 (8%) | view | |
| 12 | x 2 | installation/postgresinstallation/postgres | 116:127 (8%)137:148 (8%) | view | |
| 12 | x 2 | installationinstallation | 116:127 (8%)137:148 (8%) | view | |
| 11 | x 2 | installation/kubernetesinstallation/kubernetes | 126:136 (8%)95:105 (11%) | view | |
| 11 | x 2 | installationinstallation | 73:83 (7%)116:126 (7%) | view | |
| 11 | x 2 | installationinstallation | 73:83 (7%)137:147 (7%) | view | |
| 11 | x 2 | installation/postgresinstallation/postgres | 51:61 (7%)95:105 (7%) | view | |
| 11 | x 2 | installation/postgresinstallation/postgres | 73:83 (7%)95:105 (7%) | view | |
| 11 | x 2 | installation/postgresinstallation/postgres | 73:83 (7%)116:126 (7%) | view | |
| 11 | x 2 | installation/postgresinstallation/postgres | 51:61 (7%)137:147 (7%) | view | |
| 11 | x 2 | installation/postgresinstallation/postgres | 73:83 (7%)137:147 (7%) | view | |
| 11 | x 2 | installation/postgresinstallation/postgres | 51:61 (7%)116:126 (7%) | view | |
| 11 | x 2 | installation/kubernetesinstallation/kubernetes | 129:139 (8%)95:105 (11%) | view | |
| 11 | x 2 | installationinstallation | 51:61 (7%)137:147 (7%) | view | |
| 11 | x 2 | installationinstallation | 51:61 (7%)116:126 (7%) | view | |
| 11 | x 2 | installationinstallation | 73:83 (7%)95:105 (7%) | view | |
| 11 | x 2 | installationinstallation | 51:61 (7%)95:105 (7%) | view | |
| 10 | x 2 | installationinstallation/postgres | 76:85 (6%)54:63 (6%) | view | |
| 10 | x 2 | installationinstallation/postgres | 54:63 (6%)76:85 (6%) | view | |
| 9 | x 2 | installationinstallation/postgres | 140:148 (6%)98:106 (6%) | view | |
| 9 | x 2 | installationinstallation/postgres | 98:106 (6%)140:148 (6%) | view | |
| 9 | x 2 | installationinstallation/postgres | 98:106 (6%)119:127 (6%) | view | |
| 9 | x 2 | installationinstallation/postgres | 119:127 (6%)98:106 (6%) | view | |
| 9 | x 2 | installationinstallation/postgres | 140:148 (6%)119:127 (6%) | view | |
| 9 | x 2 | installationinstallation/postgres | 119:127 (6%)140:148 (6%) | view | |
| 8 | x 2 | installationinstallation/postgres | 140:147 (5%)76:83 (5%) | view | |
| 8 | x 2 | installationinstallation/postgres | 119:126 (5%)76:83 (5%) | view | |
| 8 | x 2 | installationinstallation/postgres | 54:61 (5%)119:126 (5%) | view | |
| 8 | x 2 | installationinstallation/postgres | 76:83 (5%)98:105 (5%) | view | |
| 8 | x 2 | installation/kubernetesinstallation/kubernetes | 66:73 (5%)54:61 (8%) | view | |
| 8 | x 2 | installationinstallation/postgres | 140:147 (5%)54:61 (5%) | view | |
| 8 | x 2 | installationinstallation/postgres | 76:83 (5%)140:147 (5%) | view |
