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
- 24% duplication:
- 23,012 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 5,556 duplicated lines
- 556 duplicates
Duplication per Extension
Duplication per Component (primary)
Longest Duplicates
The list of 50 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 253 | x 2 | src/objectssrc/objects | 168:420 (50%)386:638 (39%) | view | |
| 226 | x 2 | src/objectssrc/objects | 39:264 (78%)386:611 (35%) | view | |
| 226 | x 2 | src/objectssrc/objects | 168:393 (45%)39:264 (78%) | view | |
| 69 | x 2 | src/objectssrc/objects | 25:93 (90%)87:155 (29%) | view | |
| 69 | x 2 | src/objectssrc/objects | 41:109 (75%)87:155 (29%) | view | |
| 69 | x 2 | src/objectssrc/objects | 41:109 (75%)25:93 (90%) | view | |
| 63 | x 2 | src/objectssrc/objects | 65:127 (18%)130:192 (18%) | view | |
| 57 | x 2 | src/objectssrc/objects | 98:168 (30%)151:221 (24%) | view | |
| 51 | x 2 | src/objectssrc/objects | 38:98 (63%)30:90 (78%) | view | |
| 49 | x 2 | src/objectssrc/objects | 145:205 (20%)39:100 (53%) | view | |
| 43 | x 2 | src/objectssrc/objects | 42:87 (58%)71:116 (41%) | view | |
| 38 | x 2 | src/objectssrc/objects | 187:236 (20%)230:279 (16%) | view | |
| 37 | x 2 | src/objectssrc/objects | 37:81 (57%)36:80 (62%) | view | |
| 36 | x 2 | src/objectssrc/objects | 50:93 (50%)36:79 (62%) | view | |
| 36 | x 2 | src/objectssrc/objects | 50:93 (50%)38:81 (56%) | view | |
| 36 | x 2 | src/objectssrc/objects | 36:79 (62%)37:80 (61%) | view | |
| 36 | x 2 | src/objectssrc/objects | 36:79 (62%)38:81 (56%) | view | |
| 36 | x 2 | src/objectssrc/objects | 50:93 (50%)37:80 (61%) | view | |
| 35 | x 2 | src/objectssrc/objects | 95:132 (16%)91:128 (7%) | view | |
| 34 | x 2 | src/objectssrc/objects | 63:104 (37%)58:99 (43%) | view | |
| 34 | x 2 | src/objectssrc/objects | 17:52 (97%)17:52 (97%) | view | |
| 34 | x 2 | src/objectssrc/objects | 38:79 (58%)63:104 (37%) | view | |
| 34 | x 2 | src/objectssrc/objects | 52:93 (47%)63:104 (37%) | view | |
| 34 | x 2 | src/objectssrc/objects | 52:93 (47%)58:99 (43%) | view | |
| 34 | x 2 | src/objectssrc/objects | 39:80 (57%)58:99 (43%) | view | |
| 34 | x 2 | src/objectssrc/objects | 63:104 (37%)39:80 (57%) | view | |
| 34 | x 2 | src/objectssrc/objects | 40:81 (53%)58:99 (43%) | view | |
| 34 | x 2 | src/objectssrc/objects | 38:79 (58%)58:99 (43%) | view | |
| 34 | x 2 | src/objectssrc/objects | 40:81 (53%)63:104 (37%) | view | |
| 32 | x 2 | src/objectssrc/objects | 53:90 (49%)227:264 (6%) | view | |
| 32 | x 2 | src/objectssrc/objects | 61:98 (40%)227:264 (6%) | view | |
| 31 | x 2 | src/objectssrc/objects | 155:187 (9%)92:124 (6%) | view | |
| 31 | x 2 | src/objectssrc/objects | 155:187 (9%)96:128 (14%) | view | |
| 30 | x 2 | src/objectssrc/objects | 101:131 (6%)106:136 (12%) | view | |
| 28 | x 2 | src/objectssrc/objects | 198:227 (3%)63:93 (15%) | view | |
| 28 | x 2 | src/objectssrc/objects | 50:83 (38%)43:76 (35%) | view | |
| 28 | x 2 | src/objectssrc/objects | 38:71 (43%)43:76 (35%) | view | |
| 28 | x 2 | src/objectssrc/objects | 36:69 (48%)43:76 (35%) | view | |
| 28 | x 2 | src/objectssrc/objects | 43:76 (35%)37:70 (47%) | view | |
| 27 | x 2 | src/objectssrc/objects | 62:89 (27%)87:114 (14%) | view | |
| 27 | x 2 | src/objectssrc/objects | 109:136 (3%)298:325 (2%) | view | |
| 27 | x 2 | src/objectssrc/objects | 266:292 (9%)612:638 (4%) | view | |
| 27 | x 2 | src/objectssrc/objects | 394:420 (5%)266:292 (9%) | view | |
| 26 | x 2 | src/objectssrc/objects | 25:52 (74%)129:155 (7%) | view | |
| 26 | x 2 | src/objectssrc/objects | 45:76 (32%)58:89 (33%) | view | |
| 26 | x 2 | src/objectssrc/objects | 87:118 (29%)1305:1336 (1%) | view | |
| 26 | x 2 | src/objectssrc/objects | 63:94 (28%)45:76 (32%) | view | |
| 26 | x 2 | src/objectssrc/objects | 25:52 (74%)129:155 (7%) | view | |
| 25 | x 2 | src/objectssrc/objects | 49:79 (43%)176:206 (13%) | view | |
| 25 | x 2 | src/objectssrc/objects | 69:99 (32%)176:206 (13%) | view |
Duplicated Units
The list of top 30 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 253 | x 2 | src/objectssrc/objects | 385:639 167:421 | view | |
| 69 | x 3 | src/objectssrc/objectssrc/objects | 40:110 86:156 24:94 | view | |
| 28 | x 2 | src/objectssrc/objects | 103:132 108:137 | view | |
| 25 | x 3 | src/objectssrc/objectssrc/objects | 300:326 53:79 111:137 | view | |
| 25 | x 2 | src/objectssrc/objects | 89:115 64:90 | view | |
| 24 | x 4 | src/objectssrc/objectssrc/objectssrc/objects | 28:53 131:156 28:53 124:149 | view | |
| 22 | x 5 | src/objectssrc/objectssrc/objectssrc/objectssrc/objects | 165:188 106:129 29:52 102:125 215:238 | view | |
| 20 | x 3 | src/objectssrc/objectssrc/objects | 74:95 24:45 45:66 | view | |
| 17 | x 3 | src/objectssrc/objectssrc/objects | 37:55 33:51 41:59 | view | |
| 17 | x 2 | src/objectssrc/objects | 102:120 229:247 | view | |
| 17 | x 2 | src/objectssrc/objects | 132:150 237:255 | view | |
| 15 | x 2 | src/objectssrc/objects | 78:94 212:228 | view | |
| 15 | x 2 | src/objectssrc/objects | 26:42 25:41 | view | |
| 13 | x 2 | src/objectssrc/objects | 97:111 94:108 | view | |
| 13 | x 2 | src/objectssrc/objects | 31:45 30:44 | view | |
| 10 | x 2 | src/objectssrc/objects | 66:77 200:211 | view | |
| 9 | x 2 | src/objectssrc/objects | 142:152 65:75 | view | |
| 8 | x 2 | src/objectssrc/objects | 17:26 17:26 | view | |
| 8 | x 11 | src/objectssrc/objectssrc/objectssrc/objectssrc/objectssrc/objectssrc/objectssrc/objectssrc/objectssrc/objects... | 61:70 43:52 72:81 137:146 41:50 48:57 77:86 42:51 66:75 54:63 ... | view | |
| 8 | x 3 | src/objectssrc/objectssrc/objects | 240:249 157:166 75:84 | view | |
| 8 | x 3 | src/objectssrc/objectssrc/objects | 91:100 90:99 55:64 | view | |
| 8 | x 2 | src/objectssrc/objects | 108:117 55:64 | view | |
| 7 | x 2 | src/objectssrc/objects | 35:43 28:36 | view | |
| 7 | x 2 | src/objectssrc/objects | 28:36 27:35 | view | |
| 7 | x 2 | src/objectssrc/objects | 35:43 191:199 | view | |
| 7 | x 2 | src/objectssrc/objects | 80:88 80:88 | view | |
| 7 | x 3 | src/objectssrc/objectssrc/objects | 50:58 39:47 53:61 | view | |
| 7 | x 2 | src/objectssrc/objects | 17:25 17:25 | view | |
| 6 | x 3 | src/objectssrc/objectssrc/objects | 112:119 74:81 76:83 | view | |
| 6 | x 3 | src/objectssrc/objectssrc/objects | 17:24 17:24 17:24 | view |