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.

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Duplication Overall

8% duplication:

21,115 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
1,773 duplicated lines

157 duplicates

Duplication per Extension

Duplication per Component (primary)

Longest Duplicates

The list of 20 longest duplicates.

See data for all 157 duplicates...

Size	#	Folders	Files	Lines	Code
32	x 2	include/meta include/meta	meta.hpp meta.hpp	2839:2880 (2%) 2935:2976 (2%)	view
26	x 2	include/range/v3 include/range/v3	begin_end.hpp begin_end.hpp	58:89 (11%) 123:154 (11%)	view
18	x 2	include/range/v3/algorithm include/range/v3/algorithm	permutation.hpp permutation.hpp	77:101 (9%) 131:155 (9%)	view
17	x 2	include/range/v3/action include/range/v3/action	sort.hpp stable_sort.hpp	47:70 (32%) 47:70 (32%)	view
16	x 2	include/range/v3/algorithm include/range/v3/algorithm	max.hpp min.hpp	42:62 (44%) 42:62 (44%)	view
15	x 2	include/range/v3/algorithm include/range/v3/algorithm	permutation.hpp permutation.hpp	249:277 (7%) 306:334 (7%)	view
14	x 2	example perf	comprehensions.cpp counted_insertion_sort.cpp	55:77 (23%) 18:40 (13%)	view
13	x 2	include/range/v3/algorithm include/range/v3/algorithm	permutation.hpp permutation.hpp	227:244 (6%) 284:301 (6%)	view
13	x 2	include/range/v3/algorithm/aux_ include/range/v3/algorithm/aux_	merge_n_with_buffer.hpp sort_n_with_buffer.hpp	48:62 (52%) 48:62 (48%)	view
12	x 2	include/range/v3/view include/range/v3/view	iota.hpp iota.hpp	193:217 (3%) 260:284 (3%)	view
12	x 2	include/range/v3/algorithm include/range/v3/algorithm	max_element.hpp min_element.hpp	49:70 (44%) 49:70 (44%)	view
12	x 2	include/range/v3/view include/range/v3/view	join.hpp join.hpp	105:121 (4%) 240:256 (4%)	view
11	x 2	include/range/v3/algorithm/aux_ include/range/v3/algorithm/aux_	lower_bound_n.hpp upper_bound_n.hpp	33:48 (45%) 38:53 (45%)	view
11	x 2	include/range/v3/action include/range/v3/action	stride.hpp take.hpp	47:58 (18%) 48:59 (22%)	view
10	x 2	include/range/v3/action include/range/v3/action	push_back.hpp push_front.hpp	65:75 (16%) 65:75 (16%)	view
10	x 2	include/range/v3/algorithm include/range/v3/algorithm	all_of.hpp any_of.hpp	34:47 (38%) 35:48 (38%)	view
10	x 2	include/range/v3/algorithm include/range/v3/algorithm	max_element.hpp min_element.hpp	34:47 (37%) 34:47 (37%)	view
9	x 2	include/range/v3/view include/range/v3/view	drop_while.hpp remove_if.hpp	109:120 (11%) 146:157 (8%)	view
9	x 2	include/range/v3/utility include/range/v3/utility	variant.hpp variant.hpp	634:645 (1%) 657:669 (1%)	view
9	x 2	include/range/v3/action include/range/v3/view	split.hpp split.hpp	103:117 (18%) 288:301 (5%)	view

Duplicated Units

The list of top 11 duplicated units.

See data for all 11 unit duplicates...

Size	#	Folders	Files	Lines	Code
14	x 2	include/range/v3/action include/range/v3/view	split.hpp split.hpp	96:110 281:295	view
11	x 2	include/range/v3/action include/range/v3/action	push_back.hpp push_front.hpp	102:113 102:113	view
11	x 2	include/range/v3/view include/range/v3/view	join.hpp join.hpp	106:117 241:252	view
9	x 3	include/range/v3/view include/range/v3/view include/range/v3/view	drop_while.hpp remove_if.hpp take_while.hpp	134:143 171:180 178:187	view
9	x 2	include/range/v3/view include/range/v3/view	partial_sum.hpp partial_sum.hpp	87:96 116:125	view
8	x 2	include/range/v3/view include/range/v3/view	iota.hpp iota.hpp	424:432 489:497	view
7	x 2	include/range/v3/utility include/range/v3/utility	common_tuple.hpp common_tuple.hpp	251:258 269:276	view
7	x 2	include/range/v3/view include/range/v3/view	generate.hpp generate_n.hpp	112:119 124:131	view
7	x 2	include/range/v3/view include/range/v3/view	map.hpp map.hpp	85:92 120:127	view
7	x 2	include/range/v3/view include/range/v3/view	zip_with.hpp zip_with.hpp	313:320 334:341	view
7	x 2	include/range/v3/view include/range/v3/view	zip_with.hpp zip_with.hpp	321:328 347:354	view