Learning RegEx

"Regular Expressions" (often abbreviated "regex") are a powerful way to search text for patterns. They can be used along with (___) to manipulate text as well, i.e. to replace the text that matches a pattern with something else, or just delete it.

I'll use this page to explore ways of learning regex. Per a suggestion in the Wikidojo, I hope to dive into this with Marc in the coming weeks. It's on the agenda at Pete and Marc topics

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