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Has anybody seen an introduction to regexes that starts with finite automata?

I was introduced to them that way and it seemed very intuitive to me. I’m not sure if I just have a head for regular expressions, or if the way they were presented was especially good.

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NC State's second semester CS course uses a regex model as an example to Finite State Machines; however, I think it's only an example, not a deep dive into it

My university (UC Riverside) does this. I haven't taken that course specifically as it's not required for my major, so I can't speak to any specifics.

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