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
- 59% duplication:
- 11,352 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 6,716 duplicated lines
- 547 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
SampleWebApplication/MVC5App/Scripts (28%)
--> SampleWebApplication/MVC5App/Scripts/esm (101%)
3237
6 file pairs
details...
SampleWebApplication/MVC5App/Scripts (28%)
--> SampleWebApplication/MVC5App/Scripts/umd (99%)
3237
6 file pairs
details...
SampleWebApplication/MVC5App/Scripts/esm (99%)
--> SampleWebApplication/MVC5App/Scripts/umd (97%)
3168
4 file pairs
details...
SampleWebApplication/MVC5App/Scripts (12%)
--> SampleWebApplication/MVC5App/Scripts/src (53%)
1399
62 file pairs
details...
SampleWebApplication/MVC5App/Scripts/src (14%)
--> SampleWebApplication/MVC5App/Scripts/umd (11%)
386
17 file pairs
details...
SampleWebApplication/MVC5App/Scripts/esm (12%)
--> SampleWebApplication/MVC5App/Scripts/src (14%)
386
17 file pairs
details...
| From Component --> To Component |
Duplicated Lines |
File Pairs | Details |
|---|---|---|---|
| SampleWebApplication/MVC5App/Scripts (28%) --> SampleWebApplication/MVC5App/Scripts/esm (101%) |
3237 | 6 file pairs | details... |
| SampleWebApplication/MVC5App/Scripts (28%) --> SampleWebApplication/MVC5App/Scripts/umd (99%) |
3237 | 6 file pairs | details... |
| SampleWebApplication/MVC5App/Scripts/esm (99%) --> SampleWebApplication/MVC5App/Scripts/umd (97%) |
3168 | 4 file pairs | details... |
| SampleWebApplication/MVC5App/Scripts (12%) --> SampleWebApplication/MVC5App/Scripts/src (53%) |
1399 | 62 file pairs | details... |
| SampleWebApplication/MVC5App/Scripts/src (14%) --> SampleWebApplication/MVC5App/Scripts/umd (11%) |
386 | 17 file pairs | details... |
| SampleWebApplication/MVC5App/Scripts/esm (12%) --> SampleWebApplication/MVC5App/Scripts/src (14%) |
386 | 17 file pairs | details... |
Longest Duplicates
The list of 20 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 1067 | x 2 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/umd |  popper.jspopper.js |
25:2613 (99%)31:2619 (99%) | view |
| 517 | x 2 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/umd | popper-utils.jspopper-utils.js |
32:1109 (99%)38:1115 (93%) | view |
| 267 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts/esm | bootstrap.bundle.jspopper.js |
2253:2891 (6%)721:1359 (25%) | view |
| 267 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts/umd | bootstrap.bundle.jspopper.js |
2253:2891 (6%)727:1365 (24%) | view |
| 251 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts | popper-utils.jspopper.js |
99:601 (52%)161:663 (26%) | view |
| 188 | x 2 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/umd | popper.jspopper-utils.js |
408:739 (17%)308:640 (33%) | view |
| 188 | x 2 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/esm | popper-utils.jspopper.js |
302:634 (36%)408:739 (17%) | view |
| 188 | x 2 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/umd | popper-utils.jspopper.js |
302:634 (36%)414:745 (17%) | view |
| 188 | x 2 | SampleWebApplication/MVC5App/Scripts/umdSampleWebApplication/MVC5App/Scripts/umd | popper-utils.jspopper.js |
308:640 (33%)414:745 (17%) | view |
| 174 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts/umd | bootstrap.bundle.jspopper.js |
1557:1940 (4%)31:414 (16%) | view |
| 174 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts/esm | bootstrap.bundle.jspopper.js |
1557:1940 (4%)25:408 (16%) | view |
| 166 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts | respond.jsrespond.matchmedia.addListener.js |
22:224 (89%)71:273 (74%) | view |
| 161 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts/esm | bootstrap.bundle.jspopper-utils.js |
1965:2251 (4%)328:614 (31%) | view |
| 161 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts/esm | bootstrap.bundle.jspopper.js |
1965:2251 (4%)433:719 (15%) | view |
| 161 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts/umd | bootstrap.bundle.jspopper.js |
1965:2251 (4%)439:725 (14%) | view |
| 161 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts/umd | bootstrap.bundle.jspopper-utils.js |
1965:2251 (4%)334:620 (29%) | view |
| 147 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts/esm | bootstrap.bundle.jspopper.js |
3178:3449 (3%)1646:1917 (13%) | view |
| 147 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts/umd | bootstrap.bundle.jspopper.js |
3178:3449 (3%)1652:1923 (13%) | view |
| 117 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts/esm | bootstrap.bundle.jspopper.js |
2898:3172 (2%)1366:1640 (10%) | view |
| 117 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts/umd | bootstrap.bundle.jspopper.js |
2898:3172 (2%)1372:1646 (10%) | view |
Duplicated Units
The list of top 20 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 140 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts | respond.jsrespond.matchmedia.addListener.js |
72:212 121:261 | view |
| 59 | x 2 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/umd | popper.jspopper.js |
1278:1367 1284:1373 | view |
| 58 | x 2 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/umd | popper.jspopper.js |
1562:1650 1568:1656 | view |
| 44 | x 3 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/umdSampleWebApplication/MVC5App/Scripts | popper.jspopper.jsbootstrap.bundle.js |
1404:1477 1410:1483 2936:3009 | view |
| 43 | x 3 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/umdSampleWebApplication/MVC5App/Scripts | popper.jspopper.jsbootstrap.bundle.js |
1745:1810 1751:1816 3277:3342 | view |
| 41 | x 4 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/umdSampleWebApplication/MVC5App/Scripts/umd | popper.jspopper-utils.jspopper.jspopper-utils.js |
691:740 586:635 697:746 592:641 | view |
| 38 | x 5 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/umdSampleWebApplication/MVC5App/Scripts/umdSampleWebApplication/MVC5App/Scripts | popper.jspopper-utils.jspopper.jspopper-utils.jsbootstrap.bundle.js |
621:673 516:568 627:679 522:574 2153:2205 | view |
| 36 | x 5 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/umdSampleWebApplication/MVC5App/Scripts/umdSampleWebApplication/MVC5App/Scripts | popper.jspopper-utils.jspopper.jspopper-utils.jsbootstrap.bundle.js |
494:544 389:439 500:550 395:445 2026:2076 | view |
| 35 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts | popper.jspopper-utils.js |
440:488 378:426 | view |
| 35 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts | popper.jspopper-utils.js |
563:610 501:548 | view |
| 34 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts | popper.jspopper-utils.js |
391:438 329:376 | view |
| 34 | x 5 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/umdSampleWebApplication/MVC5App/Scripts/umdSampleWebApplication/MVC5App/Scripts | popper.jspopper-utils.jspopper.jspopper-utils.jsbootstrap.bundle.js |
445:492 340:387 451:498 346:393 1977:2024 | view |
| 39 | x 2 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/umd | popper.jspopper.js |
2471:2535 2477:2541 | view |
| 32 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts | popper.jspopper-utils.js |
625:664 563:602 | view |
| 32 | x 3 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/umdSampleWebApplication/MVC5App/Scripts | popper.jspopper.jsbootstrap.bundle.js |
1693:1732 1699:1738 3225:3264 | view |
| 28 | x 3 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/umdSampleWebApplication/MVC5App/Scripts | popper.jspopper.jsbootstrap.bundle.js |
1821:1853 1827:1859 3353:3385 | view |
| 43 | x 2 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/umd | popper.jspopper.js |
1862:1924 1868:1930 | view |
| 199 | x 2 | SampleWebApplication/MVC5App/ScriptsSampleWebApplication/MVC5App/Scripts | respond.jsrespond.matchmedia.addListener.js |
25:224 74:273 | view |
| 25 | x 3 | SampleWebApplication/MVC5App/Scripts/esmSampleWebApplication/MVC5App/Scripts/umdSampleWebApplication/MVC5App/Scripts | popper.jspopper.jsbootstrap.bundle.js |
914:958 920:964 2446:2490 | view |
| 24 | x 2 | SampleWebApplication/MVC5App/Scripts/src/modifiersSampleWebApplication/MVC5App/Scripts | offset.jspopper.js |
167:194 1706:1733 | view |