Duplication · guardian/interactive-turkish-elections

Duplication Overall

1,516 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
181 duplicated lines

Duplication per Extension

Duplication per Component (primary)

Longest Duplicates

The list of 10 longest duplicates.

Size	#	Folders	Files	Lines	Code
19	x 2	electoral-simulator/src electoral-simulator/src/embed	boot.js boot.js	1:28 (100%) 1:28 (100%)	view
16	x 2	data-election data-election	2011-data.html uk-data.html	1:20 (20%) 1:20 (29%)	view
15	x 2	data-election data-election	2002-data.html 2011-data.html	1:19 (14%) 1:19 (19%)	view
15	x 2	data-election data-election	2002-data.html uk-data.html	1:19 (14%) 1:19 (27%)	view
14	x 2	electoral-simulator/src/js electoral-simulator/src/js	main.js main.js	319:336 (3%) 342:359 (3%)	view
8	x 2	electoral-simulator/src/embed electoral-simulator/src	index.html index.html	17:29 (42%) 13:23 (50%)	view
7	x 2	data-election data-election	uk-data.html uk-data.html	28:34 (12%) 46:52 (12%)	view
7	x 2	electoral-simulator electoral-simulator	Gruntfile.js Gruntfile.js	157:163 (3%) 169:176 (3%)	view
6	x 2	electoral-simulator/src/js electoral-simulator/src/js	main.js main.js	405:410 (1%) 415:420 (1%)	view
6	x 2	electoral-simulator/src/js electoral-simulator/src/js	main.js main.js	554:560 (1%) 593:599 (1%)	view

Most Frequent Duplicates

The list of 10 most frequently found duplicates.

Size	#	Folders	Files	Lines	Code
6	x 3	data-election data-election data-election	2011-data.html uk-data.html 2002-data.html	8:17 (7%) 8:17 (10%) 8:17 (5%)	view
6	x 3	data-election data-election data-election	2011-data.html uk-data.html 2002-data.html	6:12 (7%) 6:12 (10%) 6:12 (5%)	view
6	x 3	data-election data-election data-election	2011-data.html uk-data.html 2002-data.html	2:7 (7%) 2:7 (10%) 2:7 (5%)	view
6	x 3	data-election data-election data-election	2011-data.html uk-data.html 2002-data.html	3:8 (7%) 3:8 (10%) 3:8 (5%)	view
6	x 3	data-election data-election data-election	2011-data.html uk-data.html 2002-data.html	7:16 (7%) 7:16 (10%) 7:16 (5%)	view
6	x 3	data-election data-election data-election	2011-data.html uk-data.html 2002-data.html	1:6 (7%) 1:6 (10%) 1:6 (5%)	view
6	x 3	data-election data-election data-election	2011-data.html uk-data.html 2002-data.html	10:19 (7%) 10:19 (10%) 10:19 (5%)	view
6	x 3	data-election data-election data-election	2011-data.html uk-data.html 2002-data.html	9:18 (7%) 9:18 (10%) 9:18 (5%)	view
6	x 3	data-election data-election data-election	2011-data.html uk-data.html 2002-data.html	5:10 (7%) 5:10 (10%) 5:10 (5%)	view
6	x 3	data-election data-election data-election	2011-data.html uk-data.html 2002-data.html	4:9 (7%) 4:9 (10%) 4:9 (5%)	view

Duplicated Units

The list of top 3 duplicated units.

Size	#	Folders	Files	Lines	Code
6	x 2	electoral-simulator/src electoral-simulator/src/embed	boot.js boot.js	4:11 4:11	view
19	x 2	electoral-simulator/src electoral-simulator/src/embed	boot.js boot.js	1:28 1:28	view
6	x 2	electoral-simulator/src electoral-simulator/src/embed	boot.js boot.js	14:26 14:26	view

About This Analysis

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.

Learn more...

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!"

"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."