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.

Learn more...

Duplication Overall

11% duplication:

4,667 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
551 duplicated lines

51 duplicates

Duplication per Extension

Duplication per Component (primary)

Longest Duplicates

The list of 20 longest duplicates.

See data for all 51 duplicates...

Size	#	Folders	Files	Lines	Code
26	x 2	Sources/ArgumentParserTestHelpers Sources/ArgumentParserTestHelpers	TestHelpers.swift TestHelpers.swift	180:213 (14%) 237:270 (14%)	view
17	x 2	Sources/ArgumentParser/Parsable Properties Sources/ArgumentParser/Parsable Properties	Argument.swift Option.swift	46:81 (7%) 51:86 (5%)	view
11	x 2	Sources/ArgumentParser/Parsable Types Sources/ArgumentParser/Parsable Types	ParsableArgumentsValidation.swift ParsableArgumentsValidation.swift	210:223 (6%) 259:272 (6%)	view
11	x 2	Sources/ArgumentParser/Parsable Properties Sources/ArgumentParser/Parsable Properties	Argument.swift Flag.swift	66:81 (4%) 92:107 (4%)	view
11	x 2	Sources/ArgumentParser/Parsable Properties Sources/ArgumentParser/Parsable Properties	Flag.swift Option.swift	92:107 (4%) 71:86 (3%)	view
10	x 2	Sources/ArgumentParser/Parsable Properties Sources/ArgumentParser/Parsable Properties	Argument.swift Option.swift	249:260 (4%) 379:390 (3%)	view
10	x 2	ROOT ROOT	Package.swift Package@swift-5.5.swift	16:25 (19%) 16:25 (18%)	view
10	x 2	Sources/ArgumentParser/Parsable Properties Sources/ArgumentParser/Parsable Properties	Argument.swift Option.swift	415:426 (4%) 566:577 (3%)	view
10	x 2	Sources/ArgumentParser/Parsable Properties Sources/ArgumentParser/Parsable Properties	Option.swift Option.swift	493:514 (3%) 597:624 (3%)	view
10	x 2	Sources/ArgumentParser/Parsable Properties Sources/ArgumentParser/Parsable Properties	Argument.swift Option.swift	327:338 (4%) 471:482 (3%)	view
9	x 2	Sources/ArgumentParser/Parsable Types Sources/ArgumentParser/Parsable Types	ParsableArgumentsValidation.swift ParsableArgumentsValidation.swift	86:97 (5%) 261:272 (5%)	view
9	x 2	Sources/ArgumentParser/Parsable Types Sources/ArgumentParser/Parsable Types	CommandConfiguration.swift CommandConfiguration.swift	73:81 (18%) 96:104 (18%)	view
9	x 2	Sources/ArgumentParser/Parsable Properties Sources/ArgumentParser/Parsable Properties	Argument.swift OptionGroup.swift	71:81 (3%) 71:81 (20%)	view
9	x 2	Sources/ArgumentParser/Parsable Properties Sources/ArgumentParser/Parsable Properties	Option.swift OptionGroup.swift	76:86 (2%) 71:81 (20%)	view
9	x 2	Sources/ArgumentParser/Parsing Sources/ArgumentParser/Parsing	ArgumentSet.swift ArgumentSet.swift	290:300 (3%) 312:322 (3%)	view
9	x 2	Sources/ArgumentParser/Parsable Types Sources/ArgumentParser/Parsable Types	ParsableArgumentsValidation.swift ParsableArgumentsValidation.swift	86:97 (5%) 212:223 (5%)	view
9	x 2	Sources/ArgumentParser/Parsable Properties Sources/ArgumentParser/Parsable Properties	Flag.swift OptionGroup.swift	97:107 (4%) 71:81 (20%)	view
8	x 2	Sources/ArgumentParser/Parsable Properties Sources/ArgumentParser/Parsable Properties	Argument.swift Option.swift	437:445 (3%) 588:596 (2%)	view
8	x 2	Sources/ArgumentParser/Parsing Sources/ArgumentParser/Parsing	ArgumentSet.swift ArgumentSet.swift	266:275 (2%) 290:299 (2%)	view
8	x 2	Sources/ArgumentParser/Parsable Properties Sources/ArgumentParser/Parsable Properties	Argument.swift Argument.swift	348:364 (3%) 446:465 (3%)	view