Searching for UUIDs in text with regex

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The regex for uuid is:

[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}

If you want to enforce the full string to match this regex, you will sometimes (your matcher API may have a method) need to surround above expression with ^...$, that is

^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$

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