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
- 53% duplication:
- 193,715 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 103,526 duplicated lines
- 70,397 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
LCM (31%)
--> Providers (11%)
32767
1103 file pairs
details...
| From Component --> To Component |
Duplicated Lines |
File Pairs | Details |
|---|---|---|---|
| LCM (31%) --> Providers (11%) |
32767 | 1103 file pairs | details... |
Longest Duplicates
The list of 50 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 1126 | x 2 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 368:1680 (80%)384:1696 (80%) | view | |
| 745 | x 2 | Providers/nxIPAddressProviders/nxLog | 29:987 (45%)29:987 (53%) | view | |
| 745 | x 2 | Providers/nxFileProviders/nxFileLine | 36:994 (41%)29:987 (51%) | view | |
| 745 | x 2 | Providers/nxMySqlDatabaseProviders/nxMySqlGrant | 29:987 (50%)29:987 (46%) | view | |
| 745 | x 2 | Providers/nxFileProviders/nxMySqlGrant | 36:994 (41%)29:987 (46%) | view | |
| 745 | x 2 | Providers/nxArchiveProviders/nxDNSServerAddress | 29:987 (48%)29:987 (50%) | view | |
| 745 | x 2 | Providers/nxEnvironmentProviders/nxScript | 29:987 (50%)36:994 (49%) | view | |
| 745 | x 2 | Providers/nxFileProviders/nxLog | 36:994 (41%)29:987 (53%) | view | |
| 745 | x 2 | Providers/nxDNSServerAddressProviders/nxMySqlDatabase | 29:987 (50%)29:987 (50%) | view | |
| 745 | x 2 | Providers/nxDNSServerAddressProviders/nxMySqlGrant | 29:987 (50%)29:987 (46%) | view | |
| 745 | x 2 | Providers/nxComputerProviders/nxDNSServerAddress | 29:987 (51%)29:987 (50%) | view | |
| 745 | x 2 | Providers/nxFileProviders/nxIPAddress | 36:994 (41%)29:987 (45%) | view | |
| 745 | x 2 | Providers/nxComputerProviders/nxMySqlDatabase | 29:987 (51%)29:987 (50%) | view | |
| 745 | x 2 | Providers/nxArchiveProviders/nxScript | 29:987 (48%)36:994 (49%) | view | |
| 745 | x 2 | Providers/nxOMSKeyMgmtProviders/nxScript | 21:979 (50%)36:994 (49%) | view | |
| 745 | x 2 | Providers/nxDNSServerAddressProviders/nxLog | 29:987 (50%)29:987 (53%) | view | |
| 745 | x 2 | Providers/nxComputerProviders/nxSshAuthorizedKeys | 29:987 (51%)29:987 (50%) | view | |
| 745 | x 2 | Providers/nxArchiveProviders/nxEnvironment | 29:987 (48%)29:987 (50%) | view | |
| 745 | x 2 | Providers/nxArchiveProviders/nxFirewall | 29:987 (48%)29:987 (37%) | view | |
| 745 | x 2 | Providers/nxDNSServerAddressProviders/nxFirewall | 29:987 (50%)29:987 (37%) | view | |
| 745 | x 2 | Providers/nxEnvironmentProviders/nxSshAuthorizedKeys | 29:987 (50%)29:987 (50%) | view | |
| 745 | x 2 | Providers/nxFirewallProviders/nxSshAuthorizedKeys | 29:987 (37%)29:987 (50%) | view | |
| 745 | x 2 | Providers/nxEnvironmentProviders/nxMySqlGrant | 29:987 (50%)29:987 (46%) | view | |
| 745 | x 2 | Providers/nxFileProviders/nxScript | 36:994 (41%)36:994 (49%) | view | |
| 745 | x 2 | Providers/nxFileLineProviders/nxFirewall | 29:987 (51%)29:987 (37%) | view | |
| 745 | x 2 | Providers/nxFileLineProviders/nxMySqlGrant | 29:987 (51%)29:987 (46%) | view | |
| 745 | x 2 | Providers/nxFileProviders/nxMySqlDatabase | 36:994 (41%)29:987 (50%) | view | |
| 745 | x 2 | Providers/nxIPAddressProviders/nxOMSKeyMgmt | 29:987 (45%)21:979 (50%) | view | |
| 745 | x 2 | Providers/nxFirewallProviders/nxMySqlDatabase | 29:987 (37%)29:987 (50%) | view | |
| 745 | x 2 | Providers/nxComputerProviders/nxFile | 29:987 (51%)36:994 (41%) | view | |
| 745 | x 2 | Providers/nxMySqlGrantProviders/nxScript | 29:987 (46%)36:994 (49%) | view | |
| 745 | x 2 | Providers/nxArchiveProviders/nxOMSKeyMgmt | 29:987 (48%)21:979 (50%) | view | |
| 745 | x 2 | Providers/nxMySqlUserProviders/nxOMSKeyMgmt | 29:987 (49%)21:979 (50%) | view | |
| 745 | x 2 | Providers/nxLogProviders/nxScript | 29:987 (53%)36:994 (49%) | view | |
| 745 | x 2 | Providers/nxFirewallProviders/nxMySqlUser | 29:987 (37%)29:987 (49%) | view | |
| 745 | x 2 | Providers/nxMySqlDatabaseProviders/nxMySqlUser | 29:987 (50%)29:987 (49%) | view | |
| 745 | x 2 | Providers/nxFirewallProviders/nxOMSKeyMgmt | 29:987 (37%)21:979 (50%) | view | |
| 745 | x 2 | Providers/nxDNSServerAddressProviders/nxSshAuthorizedKeys | 29:987 (50%)29:987 (50%) | view | |
| 745 | x 2 | Providers/nxDNSServerAddressProviders/nxFileLine | 29:987 (50%)29:987 (51%) | view | |
| 745 | x 2 | Providers/nxLogProviders/nxMySqlUser | 29:987 (53%)29:987 (49%) | view | |
| 745 | x 2 | Providers/nxEnvironmentProviders/nxMySqlUser | 29:987 (50%)29:987 (49%) | view | |
| 745 | x 2 | Providers/nxArchiveProviders/nxLog | 29:987 (48%)29:987 (53%) | view | |
| 745 | x 2 | Providers/nxArchiveProviders/nxFileLine | 29:987 (48%)29:987 (51%) | view | |
| 745 | x 2 | Providers/nxFirewallProviders/nxLog | 29:987 (37%)29:987 (53%) | view | |
| 745 | x 2 | Providers/nxMySqlGrantProviders/nxSshAuthorizedKeys | 29:987 (46%)29:987 (50%) | view | |
| 745 | x 2 | Providers/nxFileLineProviders/nxMySqlDatabase | 29:987 (51%)29:987 (50%) | view | |
| 745 | x 2 | Providers/nxArchiveProviders/nxComputer | 29:987 (48%)29:987 (51%) | view | |
| 745 | x 2 | Providers/nxComputerProviders/nxScript | 29:987 (51%)36:994 (49%) | view | |
| 745 | x 2 | Providers/nxComputerProviders/nxMySqlUser | 29:987 (51%)29:987 (49%) | view | |
| 745 | x 2 | Providers/nxDNSServerAddressProviders/nxMySqlUser | 29:987 (50%)29:987 (49%) | view |
Duplicated Units
The list of top 50 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 206 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 177 | x 2 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 | view | |
| 121 | x 2 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 | view | |
| 99 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 100 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 92 | x 2 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 | view | |
| 92 | x 2 | Providers/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/2.4x-2.5x/Scripts | 0:0 0:0 | view | |
| 90 | x 2 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 | view | |
| 110 | x 2 | LCM/scriptsLCM/scripts/python3 | 0:0 0:0 | view | |
| 104 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 96 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 84 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 88 | x 2 | Providers/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 | view | |
| 79 | x 2 | Providers/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 | view | |
| 81 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 83 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 67 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 67 | x 2 | Providers/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 | view | |
| 71 | x 2 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 | view | |
| 60 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 65 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 63 | x 2 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 | view | |
| 63 | x 4 | Providers/Scripts/3.x/ScriptsProviders/Scripts/3.x/ScriptsProviders/Scripts/3.x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 0:0 | view | |
| 62 | x 2 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 | view | |
| 62 | x 2 | Providers/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/2.4x-2.5x/Scripts | 0:0 0:0 | view | |
| 82 | x 2 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 | view | |
| 61 | x 2 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 | view | |
| 81 | x 2 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 | view | |
| 52 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 55 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 58 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 51 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 59 | x 2 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 | view | |
| 52 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 51 | x 3 | Providers/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 55 | x 2 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 | view | |
| 56 | x 7 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 0:0 0:0 0:0 0:0 0:0 | view | |
| 55 | x 2 | Providers/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/2.4x-2.5x/Scripts | 0:0 0:0 | view | |
| 56 | x 7 | Providers/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 0:0 0:0 0:0 0:0 0:0 | view | |
| 58 | x 2 | Providers/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 | view | |
| 52 | x 2 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 | view | |
| 50 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 55 | x 2 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 | view | |
| 51 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view | |
| 45 | x 2 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 | view | |
| 54 | x 2 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/Scripts | 0:0 0:0 | view | |
| 47 | x 2 | Providers/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 | view | |
| 45 | x 2 | Providers/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/2.4x-2.5x/Scripts | 0:0 0:0 | view | |
| 54 | x 2 | Providers/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/2.4x-2.5x/Scripts | 0:0 0:0 | view | |
| 66 | x 3 | Providers/Scripts/2.4x-2.5x/ScriptsProviders/Scripts/2.6x-2.7x/ScriptsProviders/Scripts/3.x/Scripts | 0:0 0:0 0:0 | view |