Perl Regular Expression Cheat Sheet

The Perl Regular Expression Cheat Sheet is a reference guide that provides a quick overview and examples of regular expressions in Perl programming language. It helps programmers understand and use regular expressions effectively in their Perl code.

FAQ

Q: What is a regular expression?
A: A regular expression is a sequence of characters that defines a search pattern.

Q: What is Perl?
A: Perl is a programming language known for its strong text processing capabilities.

Q: Why is Perl commonly used with regular expressions?
A: Perl has built-in support for regular expressions, making it a popular choice for pattern matching.

Q: What are some common metacharacters used in Perl regular expressions?
A: Some common metacharacters include '.', '+', '*', and '{}', which have special meaning in regular expressions.

Q: How do you use regular expressions in Perl?
A: Regular expressions in Perl are typically enclosed in forward slashes ('/') and used with functions such as 'm//' for matching or 's//' for substitution.