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
- 41% duplication:
- 5,734 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 2,387 duplicated lines
- 343 duplicates
Duplication per Extension
Duplication per Component (primary)
Longest Duplicates
The list of 20 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 96 | x 2 | dsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/par...-complete/ProseTutorial |  Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/part1b-attempt2/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/part1a/ProseTutorialdsl-samples/tutorial/part1c-complete/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/part1c/ProseTutorialdsl-samples/tutorial/part1d/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/part1b-attempt1/ProseTutorialdsl-samples/tutorial/part1d/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/part1a/ProseTutorialdsl-samples/tutorial/par...-complete/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/part1c/ProseTutorialdsl-samples/tutorial/part2b/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/part1c-complete/ProseTutorialdsl-samples/tutorial/part2a-complete/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/part1a/ProseTutorialdsl-samples/tutorial/part2a/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/part1b-attempt1/ProseTutorialdsl-samples/tutorial/part2b/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/part1a/ProseTutorialdsl-samples/tutorial/part1b-attempt2/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/part2b/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/part1d/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/part1a/ProseTutorialdsl-samples/tutorial/part1d-complete/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/part2a/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/part1d-complete/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/part1d/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/part1a/ProseTutorialdsl-samples/tutorial/part1c/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/part1c-complete/ProseTutorialdsl-samples/tutorial/part1d/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
| 96 | x 2 | dsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/part2a/ProseTutorial | Program.csProgram.cs |
1:162 (100%)1:162 (100%) | view |
Duplicated Units
The list of top 12 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 44 | x 13 | dsl-samples/tutorial/part1a-complete/ProseTutorialdsl-samples/tutorial/part1a/ProseTutorialdsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/part1b-attempt1/ProseTutorialdsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/part1b-attempt2/ProseTutorialdsl-samples/tutorial/part1c-complete/ProseTutorialdsl-samples/tutorial/part1c/ProseTutorialdsl-samples/tutorial/part1d-complete/ProseTutorialdsl-samples/tutorial/part1d/ProseTutorial... | Program.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.cs... |
78:128 78:128 78:128 78:128 78:128 78:128 78:128 78:128 78:128 78:128 ... | view |
| 30 | x 14 | dsl-samples/tutorial/part1a-complete/ProseTutorialdsl-samples/tutorial/part1a/ProseTutorialdsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/part1b-attempt1/ProseTutorialdsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/part1b-attempt2/ProseTutorialdsl-samples/tutorial/part1c-complete/ProseTutorialdsl-samples/tutorial/part1c/ProseTutorialdsl-samples/tutorial/part1d-complete/ProseTutorialdsl-samples/tutorial/part1d/ProseTutorial... | Program.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.cs... |
29:60 29:60 29:60 29:60 29:60 29:60 29:60 29:60 29:60 29:60 ... | view |
| 22 | x 14 | dsl-samples/tutorial/part1a-complete/ProseTutorialdsl-samples/tutorial/part1a/ProseTutorialdsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/part1b-attempt1/ProseTutorialdsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/part1b-attempt2/ProseTutorialdsl-samples/tutorial/part1c-complete/ProseTutorialdsl-samples/tutorial/part1c/ProseTutorialdsl-samples/tutorial/part1d-complete/ProseTutorialdsl-samples/tutorial/part1d/ProseTutorial... | Program.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.cs... |
130:153 130:153 130:153 130:153 130:153 130:153 130:153 130:153 130:153 130:153 ... | view |
| 17 | x 4 | dsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesis | WitnessFunctions.csWitnessFunctions.csWitnessFunctions.csWitnessFunctions.cs |
51:69 51:69 51:69 63:81 | view |
| 15 | x 2 | dsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesis | WitnessFunctions.csWitnessFunctions.cs |
17:35 17:35 | view |
| 14 | x 14 | dsl-samples/tutorial/part1a-complete/ProseTutorialdsl-samples/tutorial/part1a/ProseTutorialdsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/part1b-attempt1/ProseTutorialdsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/part1b-attempt2/ProseTutorialdsl-samples/tutorial/part1c-complete/ProseTutorialdsl-samples/tutorial/part1c/ProseTutorialdsl-samples/tutorial/part1d-complete/ProseTutorialdsl-samples/tutorial/part1d/ProseTutorial... | Program.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.cs... |
62:76 62:76 62:76 62:76 62:76 62:76 62:76 62:76 62:76 62:76 ... | view |
| 14 | x 6 | dsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesis | WitnessFunctions.csWitnessFunctions.csWitnessFunctions.csWitnessFunctions.csWitnessFunctions.csWitnessFunctions.cs |
17:34 17:34 17:34 17:34 17:34 29:46 | view |
| 13 | x 4 | dsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesis | WitnessFunctions.csWitnessFunctions.csWitnessFunctions.csWitnessFunctions.cs |
56:70 77:91 51:65 66:80 | view |
| 11 | x 6 | dsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesis | WitnessFunctions.csWitnessFunctions.csWitnessFunctions.csWitnessFunctions.csWitnessFunctions.csWitnessFunctions.cs |
37:48 37:48 37:48 37:48 37:48 49:60 | view |
| 11 | x 4 | dsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesis | Semantics.csSemantics.csSemantics.csSemantics.cs |
18:29 18:29 18:29 18:29 | view |
| 10 | x 2 | dsl-samples/tutorial/par...ProseTutorial/synthesisdsl-samples/tutorial/par...ProseTutorial/synthesis | WitnessFunctions.csWitnessFunctions.cs |
23:48 51:65 | view |
| 8 | x 14 | dsl-samples/tutorial/part1a-complete/ProseTutorialdsl-samples/tutorial/part1a/ProseTutorialdsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/part1b-attempt1/ProseTutorialdsl-samples/tutorial/par...-complete/ProseTutorialdsl-samples/tutorial/part1b-attempt2/ProseTutorialdsl-samples/tutorial/part1c-complete/ProseTutorialdsl-samples/tutorial/part1c/ProseTutorialdsl-samples/tutorial/part1d-complete/ProseTutorialdsl-samples/tutorial/part1d/ProseTutorial... | Program.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.csProgram.cs... |
155:163 155:163 155:163 155:163 155:163 155:163 155:163 155:163 155:163 155:163 ... | view |