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
- 56% duplication:
- 8,546 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 4,842 duplicated lines
- 155 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
PetAdoptions/cdk (14%)
--> PetAdoptions/petsite (97%)
1574
23 file pairs
details...
PetAdoptions/cdk (10%)
--> PetAdoptions/payforadoption-go (108%)
1096
11 file pairs
details...
PetAdoptions/cdk (7%)
--> PetAdoptions/petlistadoptions-go (112%)
832
13 file pairs
details...
PetAdoptions/cdk (4%)
--> PetAdoptions/petsearch-java (94%)
524
6 file pairs
details...
PetAdoptions/cdk (1%)
--> PetAdoptions/trafficgenerator (104%)
200
5 file pairs
details...
PetAdoptions/payforadoption-go (17%)
--> PetAdoptions/petlistadoptions-go (24%)
180
4 file pairs
details...
PetAdoptions/payforadoption (57%)
--> PetAdoptions/petlistadoptions (57%)
168
4 file pairs
details...
PetAdoptions/petlistadoptions (50%)
--> PetAdoptions/petsearch (42%)
146
3 file pairs
details...
PetAdoptions/cdk (1%)
--> PetAdoptions/petsearch (41%)
142
4 file pairs
details...
PetAdoptions/petsearch (39%)
--> PetAdoptions/petsite (8%)
134
3 file pairs
details...
PetAdoptions/payforadoption (46%)
--> PetAdoptions/petsearch (39%)
134
3 file pairs
details...
PetAdoptions/cdk (1%)
--> ROOT (10%)
128
2 file pairs
details...
PetAdoptions/cdk (1%)
--> PetAdoptions/payforadoption (42%)
124
3 file pairs
details...
PetAdoptions/cdk (1%)
--> PetAdoptions/petlistadoptions (42%)
124
3 file pairs
details...
PetAdoptions/petlistadoptions (40%)
--> PetAdoptions/petsite (7%)
116
2 file pairs
details...
PetAdoptions/payforadoption (40%)
--> PetAdoptions/petsite (7%)
116
2 file pairs
details...
| From Component --> To Component |
Duplicated Lines |
File Pairs | Details |
|---|---|---|---|
| PetAdoptions/cdk (14%) --> PetAdoptions/petsite (97%) |
1574 | 23 file pairs | details... |
| PetAdoptions/cdk (10%) --> PetAdoptions/payforadoption-go (108%) |
1096 | 11 file pairs | details... |
| PetAdoptions/cdk (7%) --> PetAdoptions/petlistadoptions-go (112%) |
832 | 13 file pairs | details... |
| PetAdoptions/cdk (4%) --> PetAdoptions/petsearch-java (94%) |
524 | 6 file pairs | details... |
| PetAdoptions/cdk (1%) --> PetAdoptions/trafficgenerator (104%) |
200 | 5 file pairs | details... |
| PetAdoptions/payforadoption-go (17%) --> PetAdoptions/petlistadoptions-go (24%) |
180 | 4 file pairs | details... |
| PetAdoptions/payforadoption (57%) --> PetAdoptions/petlistadoptions (57%) |
168 | 4 file pairs | details... |
| PetAdoptions/petlistadoptions (50%) --> PetAdoptions/petsearch (42%) |
146 | 3 file pairs | details... |
| PetAdoptions/cdk (1%) --> PetAdoptions/petsearch (41%) |
142 | 4 file pairs | details... |
| PetAdoptions/petsearch (39%) --> PetAdoptions/petsite (8%) |
134 | 3 file pairs | details... |
| PetAdoptions/payforadoption (46%) --> PetAdoptions/petsearch (39%) |
134 | 3 file pairs | details... |
| PetAdoptions/cdk (1%) --> ROOT (10%) |
128 | 2 file pairs | details... |
| PetAdoptions/cdk (1%) --> PetAdoptions/payforadoption (42%) |
124 | 3 file pairs | details... |
| PetAdoptions/cdk (1%) --> PetAdoptions/petlistadoptions (42%) |
124 | 3 file pairs | details... |
| PetAdoptions/petlistadoptions (40%) --> PetAdoptions/petsite (7%) |
116 | 2 file pairs | details... |
| PetAdoptions/payforadoption (40%) --> PetAdoptions/petsite (7%) |
116 | 2 file pairs | details... |
Longest Duplicates
The list of 20 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 144 | x 2 | PetAdoptions/cdk/pet_sta...ption-go/payforadoptionPetAdoptions/payforadoption-go/payforadoption |  repository.gorepository.go |
23:244 (100%)23:244 (100%) | view |
| 143 | x 2 | PetAdoptions/cdk/pet_sta...ite/petsite/wwwroot/cssPetAdoptions/petsite/petsite/wwwroot/css |  petstyles.csspetstyles.css |
1:165 (100%)1:165 (100%) | view |
| 114 | x 2 | PetAdoptions/cdk/pet_sta...a/petsearch/controllersPetAdoptions/petsearch-j...a/petsearch/controllers |  SearchController.javaSearchController.java |
30:195 (100%)30:195 (100%) | view |
| 96 | x 2 | PetAdoptions/cdk/pet_sta...ite/petsite/ControllersPetAdoptions/petsite/petsite/Controllers |  HomeController.csHomeController.cs |
1:196 (100%)1:196 (100%) | view |
| 89 | x 2 | PetAdoptions/cdk/pet_sta...ption-go/payforadoptionPetAdoptions/payforadoption-go/payforadoption | transport.gotransport.go |
19:143 (100%)19:143 (100%) | view |
| 82 | x 2 | PetAdoptions/cdk/pet_sta...ons-go/petlistadoptionsPetAdoptions/petlistadoptions-go/petlistadoptions | repository.gorepository.go |
21:144 (100%)21:144 (100%) | view |
| 72 | x 2 | PetAdoptions/cdk/pet_sta.../petsite/Views/AdoptionPetAdoptions/petsite/petsite/Views/Adoption | cshtml Index.cshtmlIndex.cshtml |
1:104 (100%)1:104 (100%) | view |
| 69 | x 2 | PetAdoptions/cdk/pet_sta...ces/petlistadoptions-goPetAdoptions/petlistadoptions-go | config.goconfig.go |
18:130 (100%)18:130 (100%) | view |
| 68 | x 2 | PetAdoptions/cdk/pet_sta...ption-go/payforadoptionPetAdoptions/payforadoption-go/payforadoption | middlewares.gomiddlewares.go |
15:103 (100%)15:103 (100%) | view |
| 65 | x 2 | PetAdoptions/cdk/pet_sta...ces/petlistadoptions-goPetAdoptions/petlistadoptions-go | main.gomain.go |
27:136 (100%)27:136 (100%) | view |
| 65 | x 2 | PetAdoptions/cdk/pet_sta...ite/petsite/ControllersPetAdoptions/petsite/petsite/Controllers | PaymentController.csPaymentController.cs |
1:165 (100%)1:165 (100%) | view |
| 64 | x 2 | PetAdoptions/cdk/pet_sta...ption-go/payforadoptionPetAdoptions/payforadoption-go/payforadoption | service.goservice.go |
14:129 (100%)14:129 (100%) | view |
| 64 | x 2 | PetAdoptions/cdk/pet_sta...vices/payforadoption-goPetAdoptions/payforadoption-go | config.goconfig.go |
19:121 (100%)19:121 (100%) | view |
| 59 | x 2 | PetAdoptions/cdk/pet_sta...ons-go/petlistadoptionsPetAdoptions/petlistadoptions-go/petlistadoptions | transport.gotransport.go |
18:103 (100%)18:103 (100%) | view |
| 57 | x 2 | PetAdoptions/cdk/pet_sta...ervices/petsite/petsitePetAdoptions/petsite/petsite | SystemsManagerConfigurationProviderWi...SystemsManagerConfigurationProviderWi... |
1:109 (100%)1:109 (100%) | view |
| 54 | x 2 | PetAdoptions/cdk/pet_sta...ite/petsite/wwwroot/cssPetAdoptions/petsite/petsite/wwwroot/css | site.csssite.css |
1:71 (100%)1:71 (100%) | view |
| 53 | x 2 | PetAdoptions/cdk/pet_sta...ons-go/petlistadoptionsPetAdoptions/petlistadoptions-go/petlistadoptions | middlewares.gomiddlewares.go |
16:83 (100%)16:83 (100%) | view |
| 50 | x 2 | PetAdoptions/cdk/pet_sta...vices/payforadoption-goPetAdoptions/payforadoption-go | main.gomain.go |
22:101 (100%)22:101 (100%) | view |
| 50 | x 2 | PetAdoptions/cdk/pet_sta.../main/java/ca/petsearchPetAdoptions/petsearch-j.../main/java/ca/petsearch | MetricEmitter.javaMetricEmitter.java |
12:94 (100%)12:94 (100%) | view |
| 49 | x 2 | PetAdoptions/cdk/pet_sta...erator/trafficgeneratorPetAdoptions/trafficgenerator/trafficgenerator | Worker.csWorker.cs |
17:108 (100%)17:108 (100%) | view |
Duplicated Units
The list of top 20 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 59 | x 2 | PetAdoptions/cdk/pet_sta...ces/petlistadoptions-goPetAdoptions/petlistadoptions-go | main.gomain.go |
62:137 62:137 | view |
| 57 | x 2 | PetAdoptions/payforadoption-goPetAdoptions/cdk/pet_sta...vices/payforadoption-go | main.gomain.go |
33:102 33:102 | view |
| 56 | x 2 | PetAdoptions/payforadoption-go/payforadoptionPetAdoptions/cdk/pet_sta...ption-go/payforadoption | repository.gorepository.go |
85:155 85:155 | view |
| 44 | x 2 | PetAdoptions/payforadoption-go/payforadoptionPetAdoptions/cdk/pet_sta...ption-go/payforadoption | transport.gotransport.go |
19:71 19:71 | view |
| 41 | x 2 | PetAdoptions/cdk/pet_sta...ite/petsite/ControllersPetAdoptions/petsite/petsite/Controllers | HomeController.csHomeController.cs |
137:191 137:191 | view |
| 37 | x 2 | PetAdoptions/cdk/pet_sta...ons-go/petlistadoptionsPetAdoptions/petlistadoptions-go/petlistadoptions | repository.gorepository.go |
56:108 56:108 | view |
| 34 | x 2 | PetAdoptions/cdk/pet_sta...ite/petsite/ControllersPetAdoptions/petsite/petsite/Controllers | PaymentController.csPaymentController.cs |
61:109 61:109 | view |
| 31 | x 2 | PetAdoptions/payforadoption-goPetAdoptions/cdk/pet_sta...vices/payforadoption-go | config.goconfig.go |
44:81 44:81 | view |
| 30 | x 2 | PetAdoptions/petsearch-j.../main/java/ca/petsearchPetAdoptions/cdk/pet_sta.../main/java/ca/petsearch | MetricEmitter.javaMetricEmitter.java |
27:64 27:64 | view |
| 30 | x 2 | PetAdoptions/cdk/pet_sta...ons-go/petlistadoptionsPetAdoptions/petlistadoptions-go/petlistadoptions | repository.gorepository.go |
110:147 110:147 | view |
| 29 | x 2 | PetAdoptions/cdk/pet_sta...erator/trafficgeneratorPetAdoptions/trafficgenerator/trafficgenerator | Worker.csWorker.cs |
63:112 63:112 | view |
| 28 | x 2 | PetAdoptions/cdk/pet_sta...ces/petlistadoptions-goPetAdoptions/petlistadoptions-go | config.goconfig.go |
96:131 96:131 | view |
| 24 | x 2 | PetAdoptions/petsearch-j...a/petsearch/controllersPetAdoptions/cdk/pet_sta...a/petsearch/controllers | SearchController.javaSearchController.java |
131:160 131:160 | view |
| 24 | x 2 | PetAdoptions/payforadoption-go/payforadoptionPetAdoptions/cdk/pet_sta...ption-go/payforadoption | service.goservice.go |
51:81 51:81 | view |
| 24 | x 2 | PetAdoptions/payforadoption-go/payforadoptionPetAdoptions/cdk/pet_sta...ption-go/payforadoption | repository.gorepository.go |
167:202 167:202 | view |
| 24 | x 2 | PetAdoptions/cdk/pet_sta...ite/petsite/ControllersPetAdoptions/petsite/petsite/Controllers | AdoptionController.csAdoptionController.cs |
52:83 52:83 | view |
| 24 | x 2 | PetAdoptions/cdk/pet_sta...ervices/petsite/petsitePetAdoptions/petsite/petsite | Startup.csStartup.cs |
34:64 34:64 | view |
| 23 | x 2 | PetAdoptions/cdk/pet_sta...ons-go/petlistadoptionsPetAdoptions/petlistadoptions-go/petlistadoptions | transport.gotransport.go |
18:48 18:48 | view |
| 23 | x 2 | PetAdoptions/cdk/pet_sta...ons-go/petlistadoptionsPetAdoptions/petlistadoptions-go/petlistadoptions | middlewares.gomiddlewares.go |
41:69 41:69 | view |
| 23 | x 2 | PetAdoptions/cdk/pet_sta...ces/petlistadoptions-goPetAdoptions/petlistadoptions-go | config.goconfig.go |
47:75 47:75 | view |