regexp
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shift normally removes the first element of an array and returns that element, like popping from the beginning. Since we are in file scope, shift without array is magically interpreted to mean "shift @ARGV" , which means the number we fed in as an argument. (see perldoc -tf shift).
Perl tricks by Neil Kandalgaonkar
Below, you will find many example patterns that you can use for and adapt to your own purposes. Key techniques used in crafting each regex are explained, with links to the corresponding pages in the tutorial where these concepts and techniques are explained in great detail.
Regular Expression Example
Five Habits for Successful R
Regular expressions are hard to write, hard to read, and hard to maintain.Finding Comments in Source Code Using Regu
Motivation Many text editors have advanced find (and replace) features.
Welcome to RegExLib.com , the Internet's first Regular Expression Library.
Regular Expression Library