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
- 27% duplication:
- 28,692 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 7,791 duplicated lines
- 1,267 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
eng/common (4%)
--> eng/publishing (65%)
519
24 file pairs
details...
| From Component --> To Component |
Duplicated Lines |
File Pairs | Details |
|---|---|---|---|
| eng/common (4%) --> eng/publishing (65%) |
519 | 24 file pairs | details... |
Longest Duplicates
The list of 20 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 382 | x 2 | src/Adapter/PlatformServices.Desktop.Legacy/Datasrc/Adapter/PlatformServices.Desktop/Data |  TestDataConnectionSql.csTestDataConnectionSql.cs |
24:955 (100%)24:955 (100%) | view |
| 235 | x 2 | src/Adapter/PlatformServices.Desktop.Legacysrc/Adapter/PlatformServices.Desktop | AssemblyResolver.csAssemblyResolver.cs |
23:673 (100%)23:673 (100%) | view |
| 175 | x 2 | src/Adapter/PlatformServ...esktop.Legacy/Utilitiessrc/Adapter/PlatformServices.Desktop/Utilities | VSInstallationUtilities.csVSInstallationUtilities.cs |
12:258 (100%)12:258 (100%) | view |
| 137 | x 2 | src/Adapter/PlatformServ...esktop.Legacy/Utilitiessrc/Adapter/PlatformServices.Desktop/Utilities | DesktopReflectionUtility.csDesktopReflectionUtility.cs |
16:311 (100%)16:311 (100%) | view |
| 130 | x 2 | src/Adapter/PlatformServ...Desktop.Legacy/Servicessrc/Adapter/PlatformServices.Desktop/Services | DesktopTestSourceHost.csDesktopTestSourceHost.cs |
20:369 (100%)20:369 (100%) | view |
| 104 | x 2 | src/Adapter/PlatformServ...esktop.Legacy/Utilitiessrc/Adapter/PlatformServices.Desktop/Utilities | DesktopDeploymentUtility.csDesktopDeploymentUtility.cs |
18:245 (100%)18:245 (100%) | view |
| 104 | x 2 | src/Adapter/PlatformServ...esktop.Legacy/Utilitiessrc/Adapter/PlatformServices.Desktop/Utilities | AppDomainUtilities.csAppDomainUtilities.cs |
19:249 (100%)19:249 (100%) | view |
| 102 | x 2 | src/Adapter/PlatformServ...sktop.Legacy/Deploymentsrc/Adapter/PlatformServices.Desktop/Deployment | AssemblyLoadWorker.csAssemblyLoadWorker.cs |
19:263 (100%)19:263 (100%) | view |
| 101 | x 2 | src/Adapter/PlatformServ...esktop.Legacy/Utilitiessrc/Adapter/PlatformServices.Desktop/Utilities | DesktopAssemblyUtility.csDesktopAssemblyUtility.cs |
19:279 (100%)19:279 (100%) | view |
| 70 | x 2 | src/Adapter/PlatformServ...Desktop.Legacy/Servicessrc/Adapter/PlatformServices.Desktop/Services | DesktopTestContextImplementation.csDesktopTestContextImplementation.cs |
84:285 (44%)86:287 (44%) | view |
| 67 | x 2 | src/Adapter/PlatformServices.Desktop.Legacy/Datasrc/Adapter/PlatformServices.Desktop/Data | CsvDataConnection.csCsvDataConnection.cs |
21:167 (100%)21:167 (100%) | view |
| 65 | x 2 | src/Adapter/PlatformServ...esktop.Legacy/Utilitiessrc/Adapter/PlatformServices.Desktop/Utilities | XmlUtilities.csXmlUtilities.cs |
1:155 (100%)1:155 (100%) | view |
| 55 | x 2 | src/Adapter/PlatformServ...Desktop.Legacy/Servicessrc/Adapter/PlatformServices.Desktop/Services | DesktopTestDataSource.csDesktopTestDataSource.cs |
19:146 (100%)19:146 (100%) | view |
| 52 | x 2 | src/Adapter/PlatformServices.Desktop.Legacy/Datasrc/Adapter/PlatformServices.Desktop/Data | OdbcDataConnection.csOdbcDataConnection.cs |
14:117 (100%)14:117 (100%) | view |
| 50 | x 2 | src/Adapter/PlatformServices.Desktop.Legacy/Datasrc/Adapter/PlatformServices.Desktop/Data | XmlDataConnection.csXmlDataConnection.cs |
21:126 (100%)21:126 (100%) | view |
| 49 | x 2 | src/Adapter/PlatformServices.Desktop.Legacy/Datasrc/Adapter/PlatformServices.Desktop/Data | TestDataConnection.csTestDataConnection.cs |
21:165 (100%)21:165 (100%) | view |
| 43 | x 2 | src/Adapter/PlatformServices.Desktop.Legacy/Datasrc/Adapter/PlatformServices.Desktop/Data | OleDataConnection.csOleDataConnection.cs |
14:105 (100%)14:105 (100%) | view |
| 40 | x 2 | src/Adapter/PlatformServ...Desktop.Legacy/Servicessrc/Adapter/PlatformServices.Desktop/Services | DesktopThreadOperations.csDesktopThreadOperations.cs |
1:117 (100%)1:117 (100%) | view |
| 37 | x 2 | eng/common/templates/post-build/channelseng/common/templates/post-build/channels |  generic-internal-channel.ymlgeneric-public-channel.yml |
112:154 (21%)111:153 (21%) | view |
| 36 | x 2 | src/Adapter/PlatformServ...Desktop.Legacy/Servicessrc/Adapter/PlatformServices.Desktop/Services | DesktopFileOperations.csDesktopFileOperations.cs |
15:133 (100%)15:133 (100%) | view |
Duplicated Units
The list of top 20 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 109 | x 2 | src/Adapter/PlatformServices.Desktop.Legacysrc/Adapter/PlatformServices.Desktop | AssemblyResolver.csAssemblyResolver.cs |
394:536 394:536 | view |
| 74 | x 2 | src/Adapter/PlatformServ...esktop.Legacy/Utilitiessrc/Adapter/PlatformServices.Desktop/Utilities | DesktopDeploymentUtility.csDesktopDeploymentUtility.cs |
115:205 115:205 | view |
| 73 | x 2 | src/Adapter/PlatformServices.Desktop.Legacy/Datasrc/Adapter/PlatformServices.Desktop/Data | TestDataConnectionSql.csTestDataConnectionSql.cs |
498:596 498:596 | view |
| 61 | x 2 | src/Adapter/PlatformServices.Desktop.Legacysrc/Adapter/PlatformServices.Desktop | AssemblyResolver.csAssemblyResolver.cs |
602:674 602:674 | view |
| 61 | x 2 | src/Adapter/PlatformServices.Desktop.Legacy/Datasrc/Adapter/PlatformServices.Desktop/Data | CsvDataConnection.csCsvDataConnection.cs |
81:163 81:163 | view |
| 58 | x 2 | src/Adapter/PlatformServ...esktop.Legacy/Utilitiessrc/Adapter/PlatformServices.Desktop/Utilities | DesktopReflectionUtility.csDesktopReflectionUtility.cs |
176:243 176:243 | view |
| 54 | x 2 | src/Adapter/PlatformServices.Desktop.Legacysrc/Adapter/PlatformServices.Desktop | AssemblyResolver.csAssemblyResolver.cs |
266:331 266:331 | view |
| 47 | x 2 | src/Adapter/PlatformServ...sktop.Legacy/Deploymentsrc/Adapter/PlatformServices.Desktop/Deployment | AssemblyLoadWorker.csAssemblyLoadWorker.cs |
157:219 157:219 | view |
| 45 | x 2 | src/Adapter/PlatformServ...Desktop.Legacy/Servicessrc/Adapter/PlatformServices.Desktop/Services | DesktopTestDataSource.csDesktopTestDataSource.cs |
31:89 31:89 | view |
| 44 | x 2 | src/Adapter/PlatformServ...esktop.Legacy/Utilitiessrc/Adapter/PlatformServices.Desktop/Utilities | XmlUtilities.csXmlUtilities.cs |
102:156 102:156 | view |
| 42 | x 2 | src/Adapter/PlatformServices.Desktop.Legacy/Datasrc/Adapter/PlatformServices.Desktop/Data | TestDataConnectionSql.csTestDataConnectionSql.cs |
599:653 599:653 | view |
| 42 | x 2 | src/Adapter/PlatformServ...esktop.Legacy/Utilitiessrc/Adapter/PlatformServices.Desktop/Utilities | AppDomainUtilities.csAppDomainUtilities.cs |
79:136 79:136 | view |
| 40 | x 2 | src/Adapter/PlatformServ...esktop.Legacy/Utilitiessrc/Adapter/PlatformServices.Desktop/Utilities | DesktopAssemblyUtility.csDesktopAssemblyUtility.cs |
120:177 120:177 | view |
| 37 | x 2 | src/Adapter/PlatformServ...Desktop.Legacy/Servicessrc/Adapter/PlatformServices.Desktop/Services | DesktopTestSourceHost.csDesktopTestSourceHost.cs |
87:143 87:143 | view |
| 36 | x 2 | src/Adapter/PlatformServ...esktop.Legacy/Utilitiessrc/Adapter/PlatformServices.Desktop/Utilities | AppDomainUtilities.csAppDomainUtilities.cs |
144:184 144:184 | view |
| 36 | x 2 | src/Adapter/PlatformServ...esktop.Legacy/Utilitiessrc/Adapter/PlatformServices.Desktop/Utilities | DesktopReflectionUtility.csDesktopReflectionUtility.cs |
245:282 245:282 | view |
| 34 | x 2 | src/Adapter/PlatformServices.Desktop.Legacy/Datasrc/Adapter/PlatformServices.Desktop/Data | TestDataConnectionSql.csTestDataConnectionSql.cs |
763:807 763:807 | view |
| 33 | x 2 | src/Adapter/PlatformServices.Desktop.Legacy/Datasrc/Adapter/PlatformServices.Desktop/Data | TestDataConnectionSql.csTestDataConnectionSql.cs |
412:472 412:472 | view |
| 32 | x 2 | src/Adapter/PlatformServ...Desktop.Legacy/Servicessrc/Adapter/PlatformServices.Desktop/Services | DesktopThreadOperations.csDesktopThreadOperations.cs |
26:64 26:64 | view |
| 31 | x 2 | src/Adapter/PlatformServ...Desktop.Legacy/Servicessrc/Adapter/PlatformServices.Desktop/Services | DesktopTestSourceHost.csDesktopTestSourceHost.cs |
169:210 169:210 | view |