What are some advanced techniques for using regex?

What are some advanced techniques for using regex?

Advanced regex techniques include lookaheads, lookbehinds, and non-capturing groups. Would you like examples?

Yes, please provide an example of a lookahead.

Sure! A lookahead can be used to find a pattern only if it's followed by another pattern. For example, \d(?=\D) matches a digit only if it's followed by a non-digit.

What about lookbehinds? How do they work?

Lookbehinds check for a pattern that precedes another pattern. For instance, (?<=\D)\d matches a digit only if it's preceded by a non-digit.

Can you explain non-capturing groups?

Non-capturing groups, denoted by (?:...), allow you to group patterns without capturing them for back-referencing. They're useful for improving performance.