IndexOf used as Contains (CA2249)
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Key dotnet.performance.indexof-as-contains · Severity info · Category performance
Microsoft analyzer CA2249. Flags string.IndexOf compared with -1 or 0 to test presence - string.Contains says it directly.
Incorrect
Section titled “Incorrect”if (title.IndexOf("draft") >= 0) Skip();Correct
Section titled “Correct”if (title.Contains("draft")) Skip();