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
- 91% duplication:
- 6,206 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 5,665 duplicated lines
- 657 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
exercises/node-javascript (37%)
--> exercises/node-typescript (54%)
866
145 file pairs
details...
exercises (350%)
--> exercises/python (9%)
336
6 file pairs
details...
| From Component --> To Component |
Duplicated Lines |
File Pairs | Details |
|---|---|---|---|
| exercises/node-javascript (37%) --> exercises/node-typescript (54%) |
866 | 145 file pairs | details... |
| exercises (350%) --> exercises/python (9%) |
336 | 6 file pairs | details... |
Longest Duplicates
The list of 20 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 150 | x 2 | exercises/python/add-esd...art/src/document_bucketexercises/python/multi-c...art/src/document_bucket |  model.pymodel.py |
17:328 (100%)17:328 (100%) | view |
| 150 | x 2 | exercises/python/add-esd...ete/src/document_bucketexercises/python/multi-c...ete/src/document_bucket | model.pymodel.py |
17:328 (100%)17:328 (100%) | view |
| 150 | x 2 | exercises/python/add-esd...ete/src/document_bucketexercises/python/multi-c...art/src/document_bucket | model.pymodel.py |
17:328 (100%)17:328 (100%) | view |
| 150 | x 2 | exercises/python/encrypt...ete/src/document_bucketexercises/python/multi-c...ete/src/document_bucket | model.pymodel.py |
17:328 (100%)17:328 (100%) | view |
| 150 | x 2 | exercises/python/add-esd...art/src/document_bucketexercises/python/encrypt...ete/src/document_bucket | model.pymodel.py |
17:328 (100%)17:328 (100%) | view |
| 150 | x 2 | exercises/python/encrypt...art/src/document_bucketexercises/python/multi-c...ete/src/document_bucket | model.pymodel.py |
17:328 (100%)17:328 (100%) | view |
| 150 | x 2 | exercises/python/add-esd...art/src/document_bucketexercises/python/encrypt...art/src/document_bucket | model.pymodel.py |
17:328 (100%)17:328 (100%) | view |
| 150 | x 2 | exercises/python/encrypt...ete/src/document_bucketexercises/python/encrypt...art/src/document_bucket | model.pymodel.py |
17:328 (100%)17:328 (100%) | view |
| 150 | x 2 | exercises/python/add-esd...ete/src/document_bucketexercises/python/encrypt...art/src/document_bucket | model.pymodel.py |
17:328 (100%)17:328 (100%) | view |
| 150 | x 2 | exercises/python/add-esd...art/src/document_bucketexercises/python/multi-c...ete/src/document_bucket | model.pymodel.py |
17:328 (100%)17:328 (100%) | view |
| 150 | x 2 | exercises/python/multi-c...ete/src/document_bucketexercises/python/multi-c...art/src/document_bucket | model.pymodel.py |
17:328 (100%)17:328 (100%) | view |
| 150 | x 2 | exercises/python/add-esd...ete/src/document_bucketexercises/python/encrypt...ete/src/document_bucket | model.pymodel.py |
17:328 (100%)17:328 (100%) | view |
| 150 | x 2 | exercises/python/encrypt...art/src/document_bucketexercises/python/multi-c...art/src/document_bucket | model.pymodel.py |
17:328 (100%)17:328 (100%) | view |
| 150 | x 2 | exercises/python/encrypt...ete/src/document_bucketexercises/python/multi-c...art/src/document_bucket | model.pymodel.py |
17:328 (100%)17:328 (100%) | view |
| 150 | x 2 | exercises/python/add-esd...ete/src/document_bucketexercises/python/add-esd...art/src/document_bucket | model.pymodel.py |
17:328 (100%)17:328 (100%) | view |
| 96 | x 2 | exercises/java/multi-cmk...fw/example/esdkworkshopexercises/java/multi-cmk...fw/example/esdkworkshop |  Api.javaApi.java |
33:275 (100%)33:275 (100%) | view |
| 96 | x 2 | exercises/java/encryptio...fw/example/esdkworkshopexercises/java/multi-cmk...fw/example/esdkworkshop | Api.javaApi.java |
33:278 (100%)33:275 (100%) | view |
| 96 | x 2 | exercises/java/add-esdk-...fw/example/esdkworkshopexercises/java/encryptio...fw/example/esdkworkshop | Api.javaApi.java |
34:284 (100%)33:278 (100%) | view |
| 96 | x 2 | exercises/java/add-esdk-...fw/example/esdkworkshopexercises/java/multi-cmk...fw/example/esdkworkshop | Api.javaApi.java |
34:284 (100%)33:275 (100%) | view |
| 96 | x 2 | exercises/java/add-esdk-...fw/example/esdkworkshopexercises/java/multi-cmk...fw/example/esdkworkshop | Api.javaApi.java |
34:284 (100%)33:275 (100%) | view |
Duplicated Units
The list of top 20 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 18 | x 3 | exercises/node-javascript/encryption-context-startexercises/node-javascript/multi-cmk-startexercises/node-javascript/multi-cmk-complete |  store.jsstore.jsstore.js |
36:62 37:62 38:63 | view |
| 18 | x 4 | exercises/node-typescrip...ption-context-start/srcexercises/node-typescript/multi-cmk-start/srcexercises/node-typescript/multi-cmk-complete/srcexercises/node-typescript/add-esdk-complete/src |  store.tsstore.tsstore.tsstore.ts |
35:61 36:61 37:62 36:62 | view |
| 15 | x 12 | exercises/node-javascript/encryption-context-startexercises/node-javascript/multi-cmk-startexercises/node-javascrip...yption-context-completeexercises/node-javascript/add-esdk-startexercises/node-javascript/multi-cmk-completeexercises/node-javascript/add-esdk-completeexercises/node-typescrip...ption-context-start/srcexercises/node-typescript/multi-cmk-start/srcexercises/node-typescrip...on-context-complete/srcexercises/node-typescript/add-esdk-start/src... | list.jslist.jslist.jslist.jslist.jslist.jslist.tslist.tslist.tslist.ts... |
12:27 12:27 12:27 12:27 12:27 12:27 15:30 15:30 15:30 15:30 ... | view |
| 15 | x 6 | exercises/node-javascript/encryption-context-startexercises/node-javascript/multi-cmk-startexercises/node-javascrip...yption-context-completeexercises/node-javascript/add-esdk-startexercises/node-javascript/multi-cmk-completeexercises/node-javascript/add-esdk-complete | search.jssearch.jssearch.jssearch.jssearch.jssearch.js |
13:28 13:28 13:28 13:28 13:28 13:28 | view |
| 15 | x 5 | exercises/java/encryptio...fw/example/esdkworkshopexercises/java/multi-cmk...fw/example/esdkworkshopexercises/java/encryptio...fw/example/esdkworkshopexercises/java/multi-cmk...fw/example/esdkworkshopexercises/java/add-esdk-...fw/example/esdkworkshop | Api.javaApi.javaApi.javaApi.javaApi.java |
51:66 51:66 52:67 51:66 53:70 | view |
| 13 | x 5 | exercises/java/encryptio...fw/example/esdkworkshopexercises/java/multi-cmk...fw/example/esdkworkshopexercises/java/encryptio...fw/example/esdkworkshopexercises/java/multi-cmk...fw/example/esdkworkshopexercises/java/add-esdk-...fw/example/esdkworkshop | Api.javaApi.javaApi.javaApi.javaApi.java |
81:94 81:94 82:95 81:94 85:100 | view |
| 11 | x 6 | exercises/java/encryptio.../esdkworkshop/datamodelexercises/java/multi-cmk.../esdkworkshop/datamodelexercises/java/encryptio.../esdkworkshop/datamodelexercises/java/add-esdk-.../esdkworkshop/datamodelexercises/java/multi-cmk.../esdkworkshop/datamodelexercises/java/add-esdk-.../esdkworkshop/datamodel | PointerItem.javaPointerItem.javaPointerItem.javaPointerItem.javaPointerItem.javaPointerItem.java |
27:38 27:38 27:38 27:38 27:38 27:38 | view |
| 10 | x 3 | exercises/java/encryptio...fw/example/esdkworkshopexercises/java/encryptio...fw/example/esdkworkshopexercises/java/multi-cmk...fw/example/esdkworkshop | App.javaApp.javaApp.java |
28:48 28:48 28:48 | view |
| 9 | x 6 | exercises/java/encryptio.../esdkworkshop/datamodelexercises/java/multi-cmk.../esdkworkshop/datamodelexercises/java/encryptio.../esdkworkshop/datamodelexercises/java/add-esdk-.../esdkworkshop/datamodelexercises/java/multi-cmk.../esdkworkshop/datamodelexercises/java/add-esdk-.../esdkworkshop/datamodel | BaseItem.javaBaseItem.javaBaseItem.javaBaseItem.javaBaseItem.javaBaseItem.java |
80:89 80:89 80:89 80:89 80:89 80:89 | view |
| 9 | x 6 | exercises/java/encryptio.../esdkworkshop/datamodelexercises/java/multi-cmk.../esdkworkshop/datamodelexercises/java/encryptio.../esdkworkshop/datamodelexercises/java/add-esdk-.../esdkworkshop/datamodelexercises/java/multi-cmk.../esdkworkshop/datamodelexercises/java/add-esdk-.../esdkworkshop/datamodel | DocumentBundle.javaDocumentBundle.javaDocumentBundle.javaDocumentBundle.javaDocumentBundle.javaDocumentBundle.java |
73:82 73:82 73:82 73:82 73:82 73:82 | view |
| 9 | x 2 | exercises/java/multi-cmk...fw/example/esdkworkshopexercises/java/add-esdk-...fw/example/esdkworkshop | App.javaApp.java |
28:49 29:49 | view |
| 9 | x 6 | exercises/python/encrypt...art/src/document_bucketexercises/python/multi-c...art/src/document_bucketexercises/python/encrypt...ete/src/document_bucketexercises/python/add-esd...art/src/document_bucketexercises/python/multi-c...ete/src/document_bucketexercises/python/add-esd...ete/src/document_bucket | model.pymodel.pymodel.pymodel.pymodel.pymodel.py |
0:0 0:0 0:0 0:0 0:0 0:0 | view |
| 8 | x 6 | exercises/java/encryptio.../esdkworkshop/datamodelexercises/java/multi-cmk.../esdkworkshop/datamodelexercises/java/encryptio.../esdkworkshop/datamodelexercises/java/add-esdk-.../esdkworkshop/datamodelexercises/java/multi-cmk.../esdkworkshop/datamodelexercises/java/add-esdk-.../esdkworkshop/datamodel | PointerItem.javaPointerItem.javaPointerItem.javaPointerItem.javaPointerItem.javaPointerItem.java |
46:54 46:54 46:54 46:54 46:54 46:54 | view |
| 8 | x 6 | exercises/java/encryptio.../esdkworkshop/datamodelexercises/java/multi-cmk.../esdkworkshop/datamodelexercises/java/encryptio.../esdkworkshop/datamodelexercises/java/add-esdk-.../esdkworkshop/datamodelexercises/java/multi-cmk.../esdkworkshop/datamodelexercises/java/add-esdk-.../esdkworkshop/datamodel | PointerItem.javaPointerItem.javaPointerItem.javaPointerItem.javaPointerItem.javaPointerItem.java |
144:152 144:152 144:152 144:152 144:152 144:152 | view |
| 8 | x 6 | exercises/java/encryptio.../esdkworkshop/datamodelexercises/java/multi-cmk.../esdkworkshop/datamodelexercises/java/encryptio.../esdkworkshop/datamodelexercises/java/add-esdk-.../esdkworkshop/datamodelexercises/java/multi-cmk.../esdkworkshop/datamodelexercises/java/add-esdk-.../esdkworkshop/datamodel | ContextItem.javaContextItem.javaContextItem.javaContextItem.javaContextItem.javaContextItem.java |
44:52 44:52 44:52 44:52 44:52 44:52 | view |
| 8 | x 6 | exercises/java/encryptio...fw/example/esdkworkshopexercises/java/multi-cmk...fw/example/esdkworkshopexercises/java/encryptio...fw/example/esdkworkshopexercises/java/add-esdk-...fw/example/esdkworkshopexercises/java/multi-cmk...fw/example/esdkworkshopexercises/java/add-esdk-...fw/example/esdkworkshop | Api.javaApi.javaApi.javaApi.javaApi.javaApi.java |
152:160 152:160 153:161 109:117 152:160 158:166 | view |
| 8 | x 6 | exercises/python/encrypt...art/src/document_bucketexercises/python/multi-c...art/src/document_bucketexercises/python/encrypt...ete/src/document_bucketexercises/python/add-esd...art/src/document_bucketexercises/python/multi-c...ete/src/document_bucketexercises/python/add-esd...ete/src/document_bucket | api.pyapi.pyapi.pyapi.pyapi.pyapi.py |
0:0 0:0 0:0 0:0 0:0 0:0 | view |
| 14 | x 2 | exercises/python/multi-c...art/src/document_bucketexercises/python/multi-c...ete/src/document_bucket | api.pyapi.py |
0:0 0:0 | view |
| 7 | x 6 | exercises/java/encryptio...fw/example/esdkworkshopexercises/java/multi-cmk...fw/example/esdkworkshopexercises/java/encryptio...fw/example/esdkworkshopexercises/java/add-esdk-...fw/example/esdkworkshopexercises/java/multi-cmk...fw/example/esdkworkshopexercises/java/add-esdk-...fw/example/esdkworkshop | Api.javaApi.javaApi.javaApi.javaApi.javaApi.java |
137:144 137:144 138:145 94:101 137:144 143:150 | view |
| 7 | x 4 | exercises/java/encryptio...fw/example/esdkworkshopexercises/java/multi-cmk...fw/example/esdkworkshopexercises/java/multi-cmk...fw/example/esdkworkshopexercises/java/add-esdk-...fw/example/esdkworkshop | Api.javaApi.javaApi.javaApi.java |
211:219 211:218 211:218 217:225 | view |