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
- 9% duplication:
- 7,197 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 710 duplicated lines
- 66 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
src/React.Sample.Cassette (56%)
--> src/React.Sample.Owin (44%)
188
2 file pairs
details...
src/React.Sample.Mvc4 (38%)
--> src/React.Template (13%)
186
3 file pairs
details...
src/React.Sample.Owin (18%)
--> src/React.Template (5%)
78
3 file pairs
details...
src/React.Sample.Mvc4 (13%)
--> src/React.Sample.Owin (16%)
68
3 file pairs
details...
src/React.Sample.Cassette (15%)
--> src/React.Template (3%)
52
2 file pairs
details...
| From Component --> To Component |
Duplicated Lines |
File Pairs | Details |
|---|---|---|---|
| src/React.Sample.Cassette (56%) --> src/React.Sample.Owin (44%) |
188 | 2 file pairs | details... |
| src/React.Sample.Mvc4 (38%) --> src/React.Template (13%) |
186 | 3 file pairs | details... |
| src/React.Sample.Owin (18%) --> src/React.Template (5%) |
78 | 3 file pairs | details... |
| src/React.Sample.Mvc4 (13%) --> src/React.Sample.Owin (16%) |
68 | 3 file pairs | details... |
| src/React.Sample.Cassette (15%) --> src/React.Template (3%) |
52 | 2 file pairs | details... |
Longest Duplicates
The list of 50 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 53 | x 2 | src/React.Sample.Cassette/Contentsrc/React.Sample.Owin/Content | 51:113 (55%)56:118 (53%) | view | |
| 28 | x 2 | src/React.MSBuild/toolssrc/React.MSBuild/tools | 1:32 (84%)1:32 (84%) | view | |
| 23 | x 2 | src/React.Sample.Mvc4/Controllerssrc/React.Template/reactnet-webpack/Controllers | 44:77 (42%)7:40 (45%) | view | |
| 22 | x 2 | src/React.Sample.Mvc4/Contentsrc/React.Template/react...ent/components/comments | 34:57 (22%)23:46 (20%) | view | |
| 13 | x 2 | src/React.Sample.Cassette/Contentsrc/React.Sample.Owin/Content | 1:23 (100%)1:23 (100%) | view | |
| 13 | x 2 | src/React.Sample.Mvc4/Contentsrc/React.Template/reactnet-webpack/wwwroot | 1:23 (100%)1:23 (100%) | view | |
| 13 | x 2 | src/React.Sample.Cassette/Contentsrc/React.Template/reactnet-webpack/wwwroot | 1:23 (100%)1:23 (100%) | view | |
| 13 | x 2 | src/React.Template/react...pack/Content/componentssrc/React.Template/react...pack/Content/components | 6:20 (48%)5:19 (44%) | view | |
| 13 | x 2 | src/React.Sample.Mvc4/Contentsrc/React.Sample.Owin/Content | 1:23 (100%)1:23 (100%) | view | |
| 13 | x 2 | src/React.Sample.Cassette/Contentsrc/React.Sample.Mvc4/Content | 1:23 (100%)1:23 (100%) | view | |
| 13 | x 2 | src/React.Sample.Owin/Contentsrc/React.Template/reactnet-webpack/wwwroot | 1:23 (100%)1:23 (100%) | view | |
| 12 | x 2 | src/React.AspNetsrc/React.AspNet | 65:77 (13%)116:128 (13%) | view | |
| 12 | x 2 | src/React.Sample.Cassette/Contentsrc/React.Sample.Owin/Content | 20:33 (12%)18:31 (12%) | view | |
| 10 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 829:841 (<1%)867:879 (<1%) | view | |
| 10 | x 2 | src/React.Sample.Cassette/Contentsrc/React.Sample.Owin/Content | 1:12 (10%)1:11 (10%) | view | |
| 10 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 801:813 (<1%)829:841 (<1%) | view | |
| 10 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 734:746 (<1%)867:879 (<1%) | view | |
| 10 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 734:746 (<1%)829:841 (<1%) | view | |
| 10 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 734:746 (<1%)801:813 (<1%) | view | |
| 10 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 734:746 (<1%)762:774 (<1%) | view | |
| 10 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 762:774 (<1%)867:879 (<1%) | view | |
| 10 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 762:774 (<1%)829:841 (<1%) | view | |
| 10 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 801:813 (<1%)867:879 (<1%) | view | |
| 10 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 762:774 (<1%)801:813 (<1%) | view | |
| 9 | x 2 | src/React.Routersrc/React.Router | 56:64 (14%)88:96 (14%) | view | |
| 8 | x 2 | src/React.Sample.Mvc4/Contentsrc/React.Template/react...ent/components/comments | 62:70 (8%)51:59 (7%) | view | |
| 8 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 711:718 (<1%)767:774 (<1%) | view | |
| 8 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 711:718 (<1%)834:841 (<1%) | view | |
| 8 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 711:718 (<1%)806:813 (<1%) | view | |
| 8 | x 2 | src/React.Sample.Mvc4/Contentsrc/React.Sample.Owin/Content | 108:116 (8%)101:109 (8%) | view | |
| 8 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 711:718 (<1%)872:879 (<1%) | view | |
| 8 | x 2 | src/React.Sample.Cassette/Contentsrc/React.Sample.Mvc4/Content | 96:104 (8%)108:116 (8%) | view | |
| 8 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 711:718 (<1%)739:746 (<1%) | view | |
| 7 | x 2 | src/React.Sample.Owinsrc/React.Template/reactnet-webpack/Controllers | 50:57 (17%)20:26 (13%) | view | |
| 7 | x 2 | src/React.Sample.Mvc4/Contentsrc/React.Template/react...ent/components/comments | 106:113 (7%)102:109 (6%) | view | |
| 7 | x 2 | src/React.Sample.Owin/Contentsrc/React.Template/react...ent/components/comments | 2:8 (7%)2:8 (6%) | view | |
| 7 | x 2 | src/React.Sample.Mvc4/Controllerssrc/React.Template/reactnet-webpack/Controllers | 20:34 (12%)72:84 (13%) | view | |
| 7 | x 2 | src/React.Sample.Mvc4/Contentsrc/React.Template/react...ent/components/comments | 89:96 (7%)85:92 (6%) | view | |
| 7 | x 2 | src/React.Sample.Mvc4/Controllerssrc/React.Sample.Owin | 57:63 (12%)50:57 (17%) | view | |
| 7 | x 2 | src/React.Sample.Cassette/Contentsrc/React.Template/react...ent/components/comments | 2:8 (7%)2:8 (6%) | view | |
| 6 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 1236:1243 (<1%)1306:1313 (<1%) | view | |
| 6 | x 2 | src/React.AspNet.Middlewaresrc/React.Core | 47:71 (27%)39:63 (37%) | view | |
| 6 | x 2 | src/React.Sample.Cassette/Contentsrc/React.Sample.ConsoleApp | 3:8 (6%)3:8 (37%) | view | |
| 6 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 384:390 (<1%)713:718 (<1%) | view | |
| 6 | x 2 | src/React.Sample.ConsoleAppsrc/React.Sample.Owin/Content | 3:8 (37%)3:8 (6%) | view | |
| 6 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 384:390 (<1%)874:879 (<1%) | view | |
| 6 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 3728:3738 (<1%)3751:3761 (<1%) | view | |
| 6 | x 2 | src/React.Sample.Owinsrc/React.Template/reactnet-webpack/Controllers | 21:29 (15%)72:81 (11%) | view | |
| 6 | x 2 | src/React.Sample.Cassette/Contentsrc/React.Sample.Owin/Content | 35:40 (6%)33:38 (6%) | view | |
| 6 | x 2 | src/React.Core/TinyIoCsrc/React.Core/TinyIoC | 384:390 (<1%)836:841 (<1%) | view |
