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
- 12% duplication:
- 17,125 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 2,099 duplicated lines
- 375 duplicates
Duplication per Extension
Duplication per Component (primary)
Longest Duplicates
The list of 50 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 23 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 3043:3065 (1%)3080:3102 (1%) | view | |
| 22 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 3007:3028 (1%)3080:3101 (1%) | view | |
| 22 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 3007:3028 (1%)3043:3064 (1%) | view | |
| 21 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2973:2993 (1%)3007:3027 (1%) | view | |
| 21 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2973:2993 (1%)3080:3100 (1%) | view | |
| 21 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2973:2993 (1%)3043:3063 (1%) | view | |
| 20 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2940:2959 (1%)2973:2992 (1%) | view | |
| 20 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2940:2959 (1%)3007:3026 (1%) | view | |
| 20 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2940:2959 (1%)3043:3062 (1%) | view | |
| 20 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2940:2959 (1%)3080:3099 (1%) | view | |
| 19 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2909:2927 (1%)2940:2958 (1%) | view | |
| 19 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2909:2927 (1%)2973:2991 (1%) | view | |
| 19 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2909:2927 (1%)3043:3061 (1%) | view | |
| 19 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2909:2927 (1%)3080:3098 (1%) | view | |
| 19 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2909:2927 (1%)3007:3025 (1%) | view | |
| 18 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2879:2896 (1%)3080:3097 (1%) | view | |
| 18 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2879:2896 (1%)2909:2926 (1%) | view | |
| 18 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2879:2896 (1%)3043:3060 (1%) | view | |
| 18 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2879:2896 (1%)3007:3024 (1%) | view | |
| 18 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2879:2896 (1%)2973:2990 (1%) | view | |
| 18 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2879:2896 (1%)2940:2957 (1%) | view | |
| 17 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2851:2867 (1%)3080:3096 (1%) | view | |
| 17 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2851:2867 (1%)2940:2956 (1%) | view | |
| 17 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2851:2867 (1%)2909:2925 (1%) | view | |
| 17 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2851:2867 (1%)2879:2895 (1%) | view | |
| 17 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2851:2867 (1%)3043:3059 (1%) | view | |
| 17 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2851:2867 (1%)3007:3023 (1%) | view | |
| 17 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2851:2867 (1%)2973:2989 (1%) | view | |
| 16 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2824:2839 (1%)2879:2894 (1%) | view | |
| 16 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2824:2839 (1%)2851:2866 (1%) | view | |
| 16 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2824:2839 (1%)2909:2924 (1%) | view | |
| 16 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2824:2839 (1%)3007:3022 (1%) | view | |
| 16 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2824:2839 (1%)2973:2988 (1%) | view | |
| 16 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2824:2839 (1%)2940:2955 (1%) | view | |
| 16 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2824:2839 (1%)3043:3058 (1%) | view | |
| 16 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2824:2839 (1%)3080:3095 (1%) | view | |
| 15 | x 2 | fatal/containerfatal/container | 1958:1983 (1%)1985:2010 (1%) | view | |
| 15 | x 2 | fatal/containerfatal/container | 2012:2037 (1%)2066:2091 (1%) | view | |
| 15 | x 2 | fatal/containerfatal/container | 1984:2009 (1%)2065:2090 (1%) | view | |
| 15 | x 2 | fatal/containerfatal/container | 2012:2037 (1%)2039:2064 (1%) | view | |
| 15 | x 2 | fatal/containerfatal/container | 2039:2064 (1%)2066:2091 (1%) | view | |
| 15 | x 2 | fatal/containerfatal/container | 1957:1982 (1%)2038:2063 (1%) | view | |
| 14 | x 2 | fatal/type/implfatal/type/impl | 155:169 (2%)237:251 (2%) | view | |
| 14 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2799:2812 (1%)3008:3021 (1%) | view | |
| 14 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2799:2812 (1%)2974:2987 (1%) | view | |
| 14 | x 2 | fatal/type/deprecatedfatal/type/deprecated | 2799:2812 (1%)2941:2954 (1%) | view | |
| 14 | x 2 | fatal/containerfatal/container | 1790:1816 (1%)1818:1844 (1%) | view | |
| 14 | x 2 | fatal/containerfatal/container | 1845:1871 (1%)1929:1955 (1%) | view | |
| 14 | x 2 | fatal/containerfatal/container | 1958:1982 (1%)2066:2090 (1%) | view | |
| 14 | x 2 | fatal/containerfatal/container | 1958:1982 (1%)2012:2036 (1%) | view |
Duplicated Units
The list of top 2 duplicated units.
