CA2249: Consider using 'String.Contains' instead of 'String.IndexOf' (code analysis) - .NET | Microsoft Learn
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java for complete beginners - indexof
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Java String indexOf() Method Examples
Java String indexOf() method example
5 Ways to Find the Index of a Substring in Python | Built In
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visual c# .net strings - the indexof method
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JavaScript String indexOf
GitHub - devictoribero/implementation-prototype-string-indexof: Implementation of the String Prototype indexOf method in Vanilla Javascript.
String Basics
java for complete beginners - indexof
Basics of Javascript · String · indexOf() (method) | by Jakub Korch | Nerd For Tech | Medium
