Today we're diving into the world of regular expressions, where the power of lookahead assertions can help you tame the wild west of string matching.
But first, let's get one thing straight: regular expressions are like a Swiss Army knife - they're useful, but only if you know how to use them.
A lookahead assertion is a feature of regular expressions that allows you to look ahead at the next character or group of characters in a string, without consuming them.
Lookahead assertions are useful when you need to check for something that might not be immediately present, but could be in the future. It's like having a magic 8-ball that says "maybe" and then gives you a thumbs up or down.