Regexps are not only about validation. E.g. sometimes you want to scan some text for e-mails (to highlight them, protect, scrap or whatever). Although for most

Regexps are not only about validation. E.g. sometimes you want to scan some text for e-mails (to highlight them, protect, scrap or whatever). Although for most languages if there's nothing built in, there's at least one lib that provides it. I prefer using that over copy-pasting it from some random website.