Extract file extension: Difference between revisions

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'''Using regular expressions (C# 6)'''
<lang [[C sharp|C#]]>public static string FindExtension(string filename) => Regex.Match(filename, @"\.[A-Za-z0-9]+$").Value;</lang>
 
=={{header|Common Lisp}}==
 
<lang Lisp>(pathname-type "foo.txt")
=>
"txt"</lang>
 
 
=={{header|Emacs Lisp}}==
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