Are regular expressions used to build parsers?

Question

This is just a question out of curiosity since I have been needing to get more and more into parsing and using regex lately.. it seems, for questions I come across in my sea

Answer 1

Typically, you use some sort of pattern-matching (not necessarily regular expressions) in a lexer, to turn your stream of characters into a stream of tokens, and have your parser look at those tokens instead of the raw character input.

If you're looking to produce your own parsers, you're probably better off looking at something like Bison to assist with that.