Regular Expressions are the Swiss Army knife for searching through information for certain patterns. They have a wide arsenal of tools, some of which often go undiscovered or underutilized. Today I will show you some advanced tips for working with regular expressions.
They have it broken out into several tips including:
- Using Callbacks
- Lookahead and Lookbehind Assertions
- Filtering Patterns
- Named Subpatterns
There's also a section called "Don’t Reinvent the Wheel" with a few handy expressions to do common things like parse [X]HTML and validating form input.