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36 lines
860 B
XML
36 lines
860 B
XML
<!DOCTYPE qhelp PUBLIC
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"-//Semmle//qhelp//EN"
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"qhelp.dtd">
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<qhelp>
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<overview>
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<p>
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This metric measures the number of lines in a file that are contained within a block that is duplicated elsewhere. These lines may include code, comments and whitespace, and the duplicate block may be in this file or in another file.
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</p>
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<p>
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A file that contains many lines that are duplicated within the code base is problematic
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for a number of reasons.
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</p>
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</overview>
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<include src="DuplicationProblems.inc.qhelp" />
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<recommendation>
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<p>
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Refactor files with lots of duplicated code to extract the common code into
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a shared library or module.
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</p>
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</recommendation>
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<references>
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<li>Wikipedia: <a href="http://en.wikipedia.org/wiki/Duplicate_code">Duplicate code</a>.</li>
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<li>M. Fowler, <em>Refactoring</em>. Addison-Wesley, 1999.</li>
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</references>
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</qhelp>
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