Re: Should be a simple spaces/digits regex....but I'm turning grey! (?=)

#           n-1 spaces or digits: vv vvvvv: last digit
(?:(?=\s[\s0-9]|[0-9]{2})[\s0-9]){15}[0-9]
#     (^^^^^^^^^^^^^^^^) ^^^^^^^: leading chars
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and only allow \s\s, \s\d, or \d\d at each point along the way.

Note that I always use [0-9] and never \d as, these days, \d includes tons of characters besides '0'..'9'.

- tye

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Re^2: Should be a simple spaces/digits regex....but I'm turning grey! (?=) by Bethany (Scribe) on Aug 05, 2014 at 02:16 UTC
Note that I always use 0-9 and never \d as, these days, \d includes tons of characters besides '0'..'9'. That's news to me. Something to read up on, update rusty skills.	[reply]
Re^2: Should be a simple spaces/digits regex....but I'm turning grey! (?=) by Anonymous Monk on Aug 05, 2014 at 02:25 UTC
`Note that I always use [0-9] and never \d as, these days, \d includes tons of characters besides '0'..'9'.` Only if you let it :) use (?a) or /a its ASCII-restrict (or ASCII-safe);	[reply] [d/l]
Re^3: Should be a simple spaces/digits regex....but I'm turning grey! (/a) by tye (Sage) on Aug 05, 2014 at 02:36 UTC
Yeah, if you've got a version of Perl that supports such. Way too many versions of Perl after \d began including Klingon^* digits yet before /a was implemented. Plus, /a messes with more than just \d. I have yet to run into a single project I was involved in where a string of Klingon^* digits would be correctly parsed as a numeric value. But I've touched plenty of projects where \w including more letters than a-z was quite useful. Perl itself is that way, after all. Sure, you could write `(?a:\d)` but that's just longer and less clear (and less portable). So I suspect I'll be sticking with `[0-9]` for quite a while still. ^* No, Unicode doesn't actually include Klingon (yet, anyway). - tye	[reply] [d/l] [select]