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
- 7% duplication:
- 5,298 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 404 duplicated lines
- 45 duplicates
Duplication per Extension
Duplication per Component (primary)
Longest Duplicates
The list of 45 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 16 | x 2 | ObserverObserver | 21:61 (45%)21:61 (44%) | view | |
| 15 | x 2 | ObserverObserver | 20:58 (44%)21:61 (41%) | view | |
| 11 | x 2 | Controller/Adminhtml/InfoController/Adminhtml/Setup | 10:44 (61%)9:38 (78%) | view | |
| 10 | x 2 | view/frontend/templates/pixelview/frontend/templates/pixel | 15:24 (38%)14:23 (40%) | view | |
| 9 | x 2 | view/frontend/templates/pixelview/frontend/templates/pixel | 16:24 (34%)20:28 (30%) | view | |
| 9 | x 2 | HelperHelper | 34:46 (13%)58:69 (13%) | view | |
| 9 | x 2 | view/frontend/templates/pixelview/frontend/templates/pixel | 15:23 (36%)20:28 (30%) | view | |
| 8 | x 2 | view/adminhtml/web/cssview/adminhtml/web/css | 220:227 (1%)236:243 (1%) | view | |
| 8 | x 2 | view/frontend/layoutview/frontend/layout | 3:11 (57%)4:12 (53%) | view | |
| 7 | x 2 | Controller/Adminhtml/AjaxController/Adminhtml/Ajax | 14:23 (24%)13:21 (25%) | view | |
| 7 | x 2 | view/adminhtml/templates/system/configview/adminhtml/templates/system/config | 43:52 (13%)43:52 (13%) | view | |
| 7 | x 2 | view/adminhtml/templates/system/configview/adminhtml/templates/system/config | 32:38 (13%)32:38 (13%) | view | |
| 7 | x 2 | Controller/Adminhtml/AjaxController/Adminhtml/Ajax | 11:19 (35%)13:21 (25%) | view | |
| 7 | x 2 | Controller/Adminhtml/AjaxController/Adminhtml/Ajax | 11:19 (35%)13:21 (25%) | view | |
| 7 | x 2 | Controller/Adminhtml/AjaxController/Adminhtml/Ajax | 11:19 (70%)14:23 (24%) | view | |
| 7 | x 2 | ObserverObserver | 6:14 (20%)6:14 (19%) | view | |
| 7 | x 2 | Controller/Adminhtml/AjaxController/Adminhtml/Ajax | 11:19 (35%)11:19 (70%) | view | |
| 7 | x 2 | Controller/Adminhtml/AjaxController/Adminhtml/Ajax | 13:21 (25%)13:21 (25%) | view | |
| 7 | x 2 | Controller/Adminhtml/AjaxController/Adminhtml/Ajax | 11:19 (70%)13:21 (25%) | view | |
| 7 | x 2 | view/adminhtml/web/cssview/adminhtml/web/css | 195:201 (1%)268:274 (1%) | view | |
| 7 | x 2 | Block/PixelHelper | 68:76 (15%)226:234 (3%) | view | |
| 7 | x 2 | Model/FeedModel/Feed | 294:300 (3%)392:398 (3%) | view | |
| 7 | x 2 | HelperHelper | 427:435 (3%)469:477 (3%) | view | |
| 7 | x 2 | Controller/Adminhtml/AjaxController/Adminhtml/Ajax | 11:19 (70%)13:21 (25%) | view | |
| 7 | x 2 | Controller/Adminhtml/AjaxController/Adminhtml/Ajax | 14:23 (24%)13:21 (25%) | view | |
| 7 | x 2 | Controller/Adminhtml/AjaxController/Adminhtml/Ajax | 11:19 (35%)14:23 (24%) | view | |
| 6 | x 2 | view/frontend/templates/pixelview/frontend/templates/pixel | 19:24 (23%)14:19 (28%) | view | |
| 6 | x 2 | Controller/Adminhtml/AjaxController/Adminhtml/Ajax | 44:50 (20%)43:49 (20%) | view | |
| 6 | x 2 | Model/Product/Feed/ProductRetrieverModel/Product/Feed/ProductRetriever | 23:43 (13%)21:41 (18%) | view | |
| 6 | x 2 | view/frontend/templates/pixelview/frontend/templates/pixel | 3:8 (31%)3:8 (28%) | view | |
| 6 | x 2 | view/frontend/templates/pixelview/frontend/templates/pixel | 3:8 (28%)3:8 (20%) | view | |
| 6 | x 2 | view/frontend/templates/pixelview/frontend/templates/pixel | 3:8 (23%)3:8 (20%) | view | |
| 6 | x 2 | Block/PixelBlock/Pixel | 46:51 (12%)33:38 (20%) | view | |
| 6 | x 2 | view/frontend/templates/pixelview/frontend/templates/pixel | 3:8 (24%)3:8 (28%) | view | |
| 6 | x 2 | Controller/Adminhtml/AjaxController/Adminhtml/Ajax | 33:38 (23%)50:56 (13%) | view | |
| 6 | x 2 | view/frontend/templates/pixelview/frontend/templates/pixel | 3:8 (31%)3:8 (20%) | view | |
| 6 | x 2 | view/frontend/templates/pixelview/frontend/templates/pixel | 3:8 (23%)3:8 (28%) | view | |
| 6 | x 2 | view/frontend/templates/pixelview/frontend/templates/pixel | 3:8 (24%)3:8 (20%) | view | |
| 6 | x 2 | view/frontend/templates/pixelview/frontend/templates/pixel | 18:23 (24%)14:19 (28%) | view | |
| 6 | x 2 | view/frontend/templates/pixelview/frontend/templates/pixel | 3:8 (23%)3:8 (31%) | view | |
| 6 | x 2 | view/adminhtml/web/cssview/adminhtml/web/css | 15:20 (1%)26:31 (1%) | view | |
| 6 | x 2 | view/frontend/templates/pixelview/frontend/templates/pixel | 3:8 (23%)3:8 (24%) | view | |
| 6 | x 2 | Block/PixelBlock/Pixel | 32:43 (13%)37:46 (16%) | view | |
| 6 | x 2 | view/frontend/templates/pixelview/frontend/templates/pixel | 14:19 (28%)23:28 (20%) | view | |
| 6 | x 2 | view/frontend/templates/pixelview/frontend/templates/pixel | 3:8 (24%)3:8 (31%) | view |
