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
- 20% duplication:
- 8,325 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 1,679 duplicated lines
- 222 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
blog-samples/CSharp (3%)
--> docs-samples/CSharp (86%)
274
22 file pairs
details...
StackOverflow-Bot/StackBot (2%)
--> StackOverflow-Bot/StackCode (8%)
51
2 file pairs
details...
| From Component --> To Component |
Duplicated Lines |
File Pairs | Details |
|---|---|---|---|
| blog-samples/CSharp (3%) --> docs-samples/CSharp (86%) |
274 | 22 file pairs | details... |
| StackOverflow-Bot/StackBot (2%) --> StackOverflow-Bot/StackCode (8%) |
51 | 2 file pairs | details... |
Longest Duplicates
The list of 20 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 75 | x 2 | StackOverflow-Bot/StackCode/out/src/botStackOverflow-Bot/StackCode/src/bot |  bot.htmlbot.html |
1:91 (100%)1:91 (100%) | view |
| 31 | x 2 | SDKV4-Samples/js/PromptUsersForInputSDKV4-Samples/js/stateBot |  index.jsindex.js |
37:90 (68%)37:93 (68%) | view |
| 30 | x 2 | docs-samples/Node/basics-naturalLanguagedocs-samples/Node/basics-naturalLanguage | basicNote-intentDialog.jsbasicNote.js |
73:118 (30%)55:100 (28%) | view |
| 25 | x 2 | blog-samples/CSharp/Bot-...Feedback-Sample/Dialogsblog-samples/CSharp/Qna-.../Qna-Rich-Cards/Dialogs |  QnADialog.csQnaDialog.cs |
1:54 (69%)1:80 (100%) | view |
| 24 | x 2 | SDKV4-Samples/dotnet_core/ComplexDialogBotSDKV4-Samples/dotnet_core/DialogInterruptionsBot | ComplexDialogBot.csDialogInterruptionsBot.cs |
115:151 (17%)218:254 (10%) | view |
| 21 | x 2 | StackOverflow-Bot/StackCode/out/srcStackOverflow-Bot/StackCode/src | extension.jsextension.ts |
59:82 (28%)74:97 (29%) | view |
| 17 | x 2 | StackOverflow-Bot/StackBot/staticStackOverflow-Bot/StackCode/out/src/bot | index.htmlbot.html |
7:29 (51%)13:36 (22%) | view |
| 17 | x 2 | blog-samples/CSharp/Scor...e/ScorableBot/App_Startdocs-samples/CSharp/Simp...-Notes-Sample/App_Start | WebApiConfig.csWebApiConfig.cs |
1:31 (100%)1:31 (100%) | view |
| 17 | x 2 | docs-samples/Node/basics-naturalLanguagedocs-samples/Node/basics-naturalLanguage | basicNote-intentDialog.jsbasicNote.js |
126:149 (17%)112:135 (15%) | view |
| 17 | x 2 | blog-samples/CSharp/Bot-...edback-Sample/App_Startdocs-samples/CSharp/Simp...-Notes-Sample/App_Start | WebApiConfig.csWebApiConfig.cs |
1:31 (100%)1:31 (100%) | view |
| 17 | x 2 | StackOverflow-Bot/StackBot/staticStackOverflow-Bot/StackCode/src/bot | index.htmlbot.html |
7:29 (51%)13:36 (22%) | view |
| 17 | x 2 | StackOverflow-Bot/StackBot/libStackOverflow-Bot/StackBot/lib | attachments.jsattachments.js |
16:36 (11%)148:168 (11%) | view |
| 17 | x 2 | SDKV4-Samples/js/DialogPromptBotSDKV4-Samples/js/stateBot | index.jsindex.js |
37:82 (38%)37:68 (37%) | view |
| 17 | x 2 | blog-samples/CSharp/Cust...-Custom-State/App_Startblog-samples/CSharp/Luis...-Scorable-Qna/App_Start | WebApiConfig.csWebApiConfig.cs |
1:34 (100%)1:34 (100%) | view |
| 17 | x 2 | blog-samples/CSharp/Cust...ustom-State/Controllersblog-samples/CSharp/Cust...ustom-State/Controllers | MessagesController.csMessagesController.cs |
1:57 (100%)1:57 (100%) | view |
| 17 | x 2 | SDKV4-Samples/js/DialogPromptBotSDKV4-Samples/js/PromptUsersForInput | index.jsindex.js |
37:82 (38%)37:65 (37%) | view |
| 17 | x 2 | blog-samples/CSharp/Bot-...back-Sample/Controllersblog-samples/CSharp/Qna-...-Rich-Cards/Controllers | MessagesController.csMessagesController.cs |
1:57 (100%)1:58 (100%) | view |
| 17 | x 2 | blog-samples/CSharp/Azur...mple.AzureSql/App_Startblog-samples/CSharp/Luis...-Scorable-Qna/App_Start | WebApiConfig.csWebApiConfig.cs |
1:34 (100%)1:34 (100%) | view |
| 17 | x 2 | blog-samples/CSharp/Qna-...na-Rich-Cards/App_Startdocs-samples/CSharp/Simp...-Notes-Sample/App_Start | WebApiConfig.csWebApiConfig.cs |
1:31 (100%)1:31 (100%) | view |
| 17 | x 2 | blog-samples/CSharp/Cust...ustom-State/Controllersblog-samples/CSharp/Luis...corable-Qna/Controllers | MessagesController.csMessagesController.cs |
1:57 (100%)1:57 (100%) | view |
Duplicated Units
The list of top 20 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 25 | x 2 | blog-samples/CSharp/Bot-...Feedback-Sample/Dialogsblog-samples/CSharp/Qna-.../Qna-Rich-Cards/Dialogs | QnADialog.csQnaDialog.cs |
20:55 21:81 | view |
| 18 | x 6 | blog-samples/CSharp/Bot-...back-Sample/Controllersblog-samples/CSharp/Cust...ustom-State/Controllersblog-samples/CSharp/Cust...ustom-State/Controllersblog-samples/CSharp/Luis...corable-Qna/Controllersblog-samples/CSharp/Qna-...-Rich-Cards/Controllersdocs-samples/CSharp/Simp...otes-Sample/Controllers | MessagesController.csMessagesController.csMessagesController.csMessagesController.csMessagesController.csMessagesController.cs |
31:58 31:58 31:58 31:58 32:59 32:59 | view |
| 17 | x 2 | SDKV4-Samples/dotnet_core/ComplexDialogBotSDKV4-Samples/dotnet_core/DialogInterruptionsBot | ComplexDialogBot.csDialogInterruptionsBot.cs |
225:246 339:360 | view |
| 17 | x 9 | blog-samples/CSharp/Azur...mple.AzureSql/App_Startblog-samples/CSharp/Bot-...edback-Sample/App_Startblog-samples/CSharp/Cust...-Custom-State/App_Startblog-samples/CSharp/Cust...-Custom-State/App_Startblog-samples/CSharp/Luis...-Scorable-Qna/App_Startblog-samples/CSharp/Qna-...na-Rich-Cards/App_Startblog-samples/CSharp/Scor...e/ScorableBot/App_Startblog-samples/CSharp/Triv...ple/TriviaBot/App_Startdocs-samples/CSharp/Simp...-Notes-Sample/App_Start | WebApiConfig.csWebApiConfig.csWebApiConfig.csWebApiConfig.csWebApiConfig.csWebApiConfig.csWebApiConfig.csWebApiConfig.csWebApiConfig.cs |
12:35 9:32 12:35 12:35 12:35 9:32 9:32 11:34 9:32 | view |
| 16 | x 3 | docs-samples/Node/basics-naturalLanguagedocs-samples/Node/basics-naturalLanguagedocs-samples/Node/basics-naturalLanguage | basicNote-intentDialog.jsbasicNote-intentDialog.jsbasicNote.js |
126:146 157:178 112:132 | view |
| 15 | x 2 | StackOverflow-Bot/DialogAnalyzerFunc/ServicesStackOverflow-Bot/DialogAnalyzerFunc/Services | ComputerVisionService.csTextAnalyticsService.cs |
26:43 19:36 | view |
| 13 | x 2 | blog-samples/CSharp/FacebookHandover/Primaryblog-samples/CSharp/FacebookHandover/Secondary | Startup.csStartup.cs |
45:61 45:61 | view |
| 12 | x 2 | blog-samples/CSharp/Bot-...back-Sample/Controllersblog-samples/CSharp/Qna-...-Rich-Cards/Controllers | MessagesController.csMessagesController.cs |
17:29 17:30 | view |
| 12 | x 3 | blog-samples/CSharp/Cust...ustom-State/Controllersblog-samples/CSharp/Cust...ustom-State/Controllersblog-samples/CSharp/Luis...corable-Qna/Controllers | MessagesController.csMessagesController.csMessagesController.cs |
17:29 17:29 17:29 | view |
| 12 | x 2 | docs-samples/Node/basics-naturalLanguagedocs-samples/Node/basics-naturalLanguage | basicNote-intentDialog.jsbasicNote.js |
102:119 84:101 | view |
| 11 | x 2 | blog-samples/CSharp/Triv...chSample/TriviaBot/Luisblog-samples/CSharp/Triv...chSample/TriviaBot/Luis | LuisEntity.csLuisIntent.cs |
124:137 81:94 | view |
| 11 | x 2 | docs-samples/Node/basics-naturalLanguagedocs-samples/Node/basics-naturalLanguage | basicNote-intentDialog.jsbasicNote.js |
73:88 55:70 | view |
| 10 | x 2 | blog-samples/CSharp/Triv...ample/TriviaBot/Runtimeblog-samples/CSharp/Triv...ample/TriviaBot/Runtime | Responses.csResponses.cs |
22:33 86:97 | view |
| 10 | x 2 | blog-samples/CSharp/Triv...ample/TriviaBot/Runtimeblog-samples/CSharp/Triv...ample/TriviaBot/Runtime | Responses.csResponses.cs |
262:273 275:286 | view |
| 10 | x 2 | docs-samples/Node/basics-naturalLanguagedocs-samples/Node/basics-naturalLanguage | basicNote-intentDialog.jsbasicNote.js |
89:101 71:83 | view |
| 9 | x 3 | SDKV4-Samples/dotnet_core/ComplexDialogBotSDKV4-Samples/dotnet_core/DialogInterruptionsBotSDKV4-Samples/dotnet_core/DialogPromptBot | Startup.csStartup.csStartup.cs |
27:38 27:38 29:39 | view |
| 9 | x 2 | SDKV4-Samples/dotnet_core/PromptUsersForInputSDKV4-Samples/dotnet_core/StateBot | CustomPromptBot.csStateBot.cs |
40:50 35:45 | view |
| 9 | x 2 | SDKV4-Samples/dotnet_core/PromptUsersForInputSDKV4-Samples/dotnet_core/StateBot | Startup.csStartup.cs |
28:38 29:39 | view |
| 8 | x 2 | blog-samples/CSharp/Azur...zureSql/SqlStateServiceblog-samples/CSharp/BotS...teExport/BotStateExport | SqlBotDataEntity.csTableBotDataStore.cs |
80:88 218:226 | view |
| 7 | x 2 | blog-samples/CSharp/Scor...ableBot/Dialogs/Balanceblog-samples/CSharp/Scor...Bot/Dialogs/MakePayment | ScorableCheckBalance.csScorableMakePayment.cs |
44:53 44:53 | view |