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
- 58% duplication:
- 5,294 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 3,088 duplicated lines
- 208 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
leaflet-vue-amplify (85%)
--> maplibre-gl-js-vue-amplify (92%)
884
8 file pairs
details...
react-map-gl-amplify-marker-tooltip-example (83%)
--> react-map-gl-amplify (95%)
670
3 file pairs
details...
maplibre-gl-js-react-amplify (91%)
--> react-map-gl-amplify-marker-tooltip-example (71%)
574
2 file pairs
details...
maplibre-gl-js-react-amplify (91%)
--> react-map-gl-amplify (81%)
574
2 file pairs
details...
create-custom-map-style (63%)
--> react-map-gl-amplify-here-map (80%)
524
2 file pairs
details...
maplibre-gl-js-react-amplify (82%)
--> react-map-gl-amplify-here-map (79%)
522
1 file pair
details...
react-map-gl-amplify-here-map (79%)
--> react-map-gl-amplify (74%)
522
1 file pair
details...
react-map-gl-amplify-here-map (79%)
--> react-map-gl-amplify-marker-tooltip-example (65%)
522
1 file pair
details...
create-custom-map-style (62%)
--> react-map-gl-amplify-marker-tooltip-example (64%)
512
1 file pair
details...
create-custom-map-style (62%)
--> maplibre-gl-js-react-amplify (81%)
512
1 file pair
details...
create-custom-map-style (62%)
--> react-map-gl-amplify (72%)
512
1 file pair
details...
geocode-udf-lambda-aurora (63%)
--> geocode-udf-lambda-redshift (59%)
280
2 file pairs
details...
leaflet-vue-amplify (18%)
--> react-map-gl-amplify-marker-tooltip-example (24%)
192
1 file pair
details...
create-custom-map-style (23%)
--> maplibre-gl-js-vue-amplify (20%)
192
1 file pair
details...
create-custom-map-style (23%)
--> leaflet-vue-amplify (18%)
192
1 file pair
details...
maplibre-gl-js-vue-amplify (20%)
--> react-map-gl-amplify-here-map (29%)
192
1 file pair
details...
maplibre-gl-js-vue-amplify (20%)
--> react-map-gl-amplify (27%)
192
1 file pair
details...
leaflet-vue-amplify (18%)
--> react-map-gl-amplify-here-map (29%)
192
1 file pair
details...
leaflet-vue-amplify (18%)
--> react-map-gl-amplify (27%)
192
1 file pair
details...
maplibre-gl-js-vue-amplify (20%)
--> react-map-gl-amplify-marker-tooltip-example (24%)
192
1 file pair
details...
maplibre-gl-js-react-amplify (30%)
--> maplibre-gl-js-vue-amplify (20%)
192
1 file pair
details...
leaflet-vue-amplify (18%)
--> maplibre-gl-js-react-amplify (30%)
192
1 file pair
details...
maplibre-gl-js-react (65%)
--> react-map-gl-amplify (13%)
92
2 file pairs
details...
maplibre-gl-js-amplify-marker-tooltip-example (40%)
--> maplibre-gl-js-amplify (75%)
81
1 file pair
details...
maplibre-gl-js-react (51%)
--> react-map-gl-amplify-marker-tooltip-example (9%)
72
2 file pairs
details...
maplibre-native-ios (34%)
--> tangram-es-ios (40%)
64
2 file pairs
details...
aurora-udfs (10%)
--> geocode-udf-lambda-aurora (13%)
58
1 file pair
details...
| From Component --> To Component |
Duplicated Lines |
File Pairs | Details |
|---|---|---|---|
| leaflet-vue-amplify (85%) --> maplibre-gl-js-vue-amplify (92%) |
884 | 8 file pairs | details... |
| react-map-gl-amplify-marker-tooltip-example (83%) --> react-map-gl-amplify (95%) |
670 | 3 file pairs | details... |
| maplibre-gl-js-react-amplify (91%) --> react-map-gl-amplify-marker-tooltip-example (71%) |
574 | 2 file pairs | details... |
| maplibre-gl-js-react-amplify (91%) --> react-map-gl-amplify (81%) |
574 | 2 file pairs | details... |
| create-custom-map-style (63%) --> react-map-gl-amplify-here-map (80%) |
524 | 2 file pairs | details... |
| maplibre-gl-js-react-amplify (82%) --> react-map-gl-amplify-here-map (79%) |
522 | 1 file pair | details... |
| react-map-gl-amplify-here-map (79%) --> react-map-gl-amplify (74%) |
522 | 1 file pair | details... |
| react-map-gl-amplify-here-map (79%) --> react-map-gl-amplify-marker-tooltip-example (65%) |
522 | 1 file pair | details... |
| create-custom-map-style (62%) --> react-map-gl-amplify-marker-tooltip-example (64%) |
512 | 1 file pair | details... |
| create-custom-map-style (62%) --> maplibre-gl-js-react-amplify (81%) |
512 | 1 file pair | details... |
| create-custom-map-style (62%) --> react-map-gl-amplify (72%) |
512 | 1 file pair | details... |
| geocode-udf-lambda-aurora (63%) --> geocode-udf-lambda-redshift (59%) |
280 | 2 file pairs | details... |
| leaflet-vue-amplify (18%) --> react-map-gl-amplify-marker-tooltip-example (24%) |
192 | 1 file pair | details... |
| create-custom-map-style (23%) --> maplibre-gl-js-vue-amplify (20%) |
192 | 1 file pair | details... |
| create-custom-map-style (23%) --> leaflet-vue-amplify (18%) |
192 | 1 file pair | details... |
| maplibre-gl-js-vue-amplify (20%) --> react-map-gl-amplify-here-map (29%) |
192 | 1 file pair | details... |
| maplibre-gl-js-vue-amplify (20%) --> react-map-gl-amplify (27%) |
192 | 1 file pair | details... |
| leaflet-vue-amplify (18%) --> react-map-gl-amplify-here-map (29%) |
192 | 1 file pair | details... |
| leaflet-vue-amplify (18%) --> react-map-gl-amplify (27%) |
192 | 1 file pair | details... |
| maplibre-gl-js-vue-amplify (20%) --> react-map-gl-amplify-marker-tooltip-example (24%) |
192 | 1 file pair | details... |
| maplibre-gl-js-react-amplify (30%) --> maplibre-gl-js-vue-amplify (20%) |
192 | 1 file pair | details... |
| leaflet-vue-amplify (18%) --> maplibre-gl-js-react-amplify (30%) |
192 | 1 file pair | details... |
| maplibre-gl-js-react (65%) --> react-map-gl-amplify (13%) |
92 | 2 file pairs | details... |
| maplibre-gl-js-amplify-marker-tooltip-example (40%) --> maplibre-gl-js-amplify (75%) |
81 | 1 file pair | details... |
| maplibre-gl-js-react (51%) --> react-map-gl-amplify-marker-tooltip-example (9%) |
72 | 2 file pairs | details... |
| maplibre-native-ios (34%) --> tangram-es-ios (40%) |
64 | 2 file pairs | details... |
| aurora-udfs (10%) --> geocode-udf-lambda-aurora (13%) |
58 | 1 file pair | details... |
Longest Duplicates
The list of 20 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 276 | x 2 | maplibre-gl-js-react-amp...h/maplibrereact022beae3react-map-gl-amplify-mar...h/maplibrereact022beae3 |  maplibrereact022beae3-cloudformation-...maplibrereact022beae3-cloudformation-... |
2:418 (100%)2:418 (100%) | view |
| 276 | x 2 | maplibre-gl-js-react-amp...h/maplibrereact022beae3react-map-gl-amplify/amp...h/maplibrereact022beae3 | maplibrereact022beae3-cloudformation-...maplibrereact022beae3-cloudformation-... |
2:418 (100%)2:418 (100%) | view |
| 276 | x 2 | react-map-gl-amplify-mar...h/maplibrereact022beae3react-map-gl-amplify/amp...h/maplibrereact022beae3 | maplibrereact022beae3-cloudformation-...maplibrereact022beae3-cloudformation-... |
2:418 (100%)2:418 (100%) | view |
| 84 | x 2 | leaflet-vue-amplify/ampl...auth/leafletvue022beae3maplibre-gl-js-vue-ampli...h/maplibrereact022beae3 | leafletvue022beae3-cloudformation-tem...maplibrereact022beae3-cloudformation-... |
1:84 (21%)1:84 (21%) | view |
| 75 | x 2 | maplibre-gl-js-react-amp...h/maplibrereact022beae3react-map-gl-amplify-her...uth/awsheredemo4fc859b5 | maplibrereact022beae3-cloudformation-...awsheredemo4fc859b5-cloudformation-te... |
2:150 (27%)2:150 (27%) | view |
| 75 | x 2 | create-custom-map-style/...ecustommapstyle0000000xreact-map-gl-amplify-her...uth/awsheredemo4fc859b5 | createcustommapstyle0000000x-cloudfor...awsheredemo4fc859b5-cloudformation-te... |
2:151 (27%)2:150 (27%) | view |
| 75 | x 2 | create-custom-map-style/...ecustommapstyle0000000xreact-map-gl-amplify-mar...h/maplibrereact022beae3 | createcustommapstyle0000000x-cloudfor...maplibrereact022beae3-cloudformation-... |
2:151 (27%)2:150 (27%) | view |
| 75 | x 2 | react-map-gl-amplify-her...uth/awsheredemo4fc859b5react-map-gl-amplify/amp...h/maplibrereact022beae3 | awsheredemo4fc859b5-cloudformation-te...maplibrereact022beae3-cloudformation-... |
2:150 (27%)2:150 (27%) | view |
| 75 | x 2 | create-custom-map-style/...ecustommapstyle0000000xmaplibre-gl-js-react-amp...h/maplibrereact022beae3 | createcustommapstyle0000000x-cloudfor...maplibrereact022beae3-cloudformation-... |
2:151 (27%)2:150 (27%) | view |
| 75 | x 2 | react-map-gl-amplify-her...uth/awsheredemo4fc859b5react-map-gl-amplify-mar...h/maplibrereact022beae3 | awsheredemo4fc859b5-cloudformation-te...maplibrereact022beae3-cloudformation-... |
2:150 (27%)2:150 (27%) | view |
| 75 | x 2 | create-custom-map-style/...ecustommapstyle0000000xreact-map-gl-amplify/amp...h/maplibrereact022beae3 | createcustommapstyle0000000x-cloudfor...maplibrereact022beae3-cloudformation-... |
2:151 (27%)2:150 (27%) | view |
| 74 | x 2 | leaflet-vue-amplify/ampl...auth/leafletvue022beae3maplibre-gl-js-vue-ampli...h/maplibrereact022beae3 | leafletvue022beae3-cloudformation-tem...maplibrereact022beae3-cloudformation-... |
176:249 (19%)176:249 (19%) | view |
| 74 | x 2 | leaflet-vue-amplify/ampl...auth/leafletvue022beae3maplibre-gl-js-vue-ampli...h/maplibrereact022beae3 | leafletvue022beae3-cloudformation-tem...maplibrereact022beae3-cloudformation-... |
311:384 (19%)311:384 (19%) | view |
| 68 | x 2 | leaflet-vue-amplify/ampl...auth/leafletvue022beae3react-map-gl-amplify-mar...h/maplibrereact022beae3 | leafletvue022beae3-cloudformation-tem...maplibrereact022beae3-cloudformation-... |
2:69 (17%)4:137 (24%) | view |
| 68 | x 2 | create-custom-map-style/...ecustommapstyle0000000xmaplibre-gl-js-vue-ampli...h/maplibrereact022beae3 | createcustommapstyle0000000x-cloudfor...maplibrereact022beae3-cloudformation-... |
4:138 (24%)2:69 (17%) | view |
| 68 | x 2 | create-custom-map-style/...ecustommapstyle0000000xleaflet-vue-amplify/ampl...auth/leafletvue022beae3 | createcustommapstyle0000000x-cloudfor...leafletvue022beae3-cloudformation-tem... |
4:138 (24%)2:69 (17%) | view |
| 68 | x 2 | maplibre-gl-js-vue-ampli...h/maplibrereact022beae3react-map-gl-amplify-her...uth/awsheredemo4fc859b5 | maplibrereact022beae3-cloudformation-...awsheredemo4fc859b5-cloudformation-te... |
2:69 (17%)4:137 (24%) | view |
| 68 | x 2 | maplibre-gl-js-vue-ampli...h/maplibrereact022beae3react-map-gl-amplify/amp...h/maplibrereact022beae3 | maplibrereact022beae3-cloudformation-...maplibrereact022beae3-cloudformation-... |
2:69 (17%)4:137 (24%) | view |
| 68 | x 2 | leaflet-vue-amplify/ampl...auth/leafletvue022beae3react-map-gl-amplify-her...uth/awsheredemo4fc859b5 | leafletvue022beae3-cloudformation-tem...awsheredemo4fc859b5-cloudformation-te... |
2:69 (17%)4:137 (24%) | view |
| 68 | x 2 | leaflet-vue-amplify/ampl...auth/leafletvue022beae3react-map-gl-amplify/amp...h/maplibrereact022beae3 | leafletvue022beae3-cloudformation-tem...maplibrereact022beae3-cloudformation-... |
2:69 (17%)4:137 (24%) | view |
Duplicated Units
The list of top 3 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 52 | x 2 | geocode-udf-lambda-redshift/Lambdageocode-udf-lambda-aurora/Lambda |  geocode.pygeocode.py |
0:0 0:0 | view |
| 7 | x 2 | maplibre-js-react-iot-asset-tracking/scriptsmaplibre-js-react-iot-asset-tracking/scripts |  test.jstest.js |
23:30 32:39 | view |
| 6 | x 2 | maplibre-gl-js-vue-amplify/src/storeleaflet-vue-amplify/src/store | index.jsindex.js |
3:9 3:9 | view |