Regular Expressions in Perl
Sufyan bin Uzayr · 2023
In Perl, a regular expression is a particular text string that describes a search pattern inside a given text. Regex in Perl is tied to the host language and is not the same as in PHP, Python, and other programming languages. The regular expression is a string that is a mixture of distinct characters that facilitates text string matching. Perl has several distinct character classes, some of which are used so frequently that a specific sequence is built for them. Writing a custom sequence aims to make the code more understandable and concise. Perl has several regular expression quantifiers that may determine how many times a particular character can repeat before it is matched. The regular expression in Perl allows the reader to execute numerous actions on a given text using appropriate operators. Subroutine substitution in Perl regex may also be done using subroutines to eliminate the repetition of writing the substitution regex for each string.