Regex help

C_T has asked for the wisdom of the Perl Monks concerning the following question:

There must be a way to do this, but I have not been able to locate anything.

I need to match (e.g.) B38-B49... that is B38, B39, B40, B41...B49.

I'm not sure how to tell it to do this, however, since 30-37 shoudn't match. I tried using the (?(condition)regex) syntax, but must be misunderstanding the doc because it's not working for me.

Anyone have a way to do this?

Thanks,

Charles Thomas
Madison, WI

Comment on Regex help

Replies are listed 'Best First'.
Re: Regex help by ikegami (Patriarch) on Oct 25, 2004 at 22:07 UTC
`/B@{[join('\|', 38..49)]}/` or `/B(?:38\|39\|40\|41\|42\|43\|44\|45\|46\|47\|48\|49)/` or `/B(\d\d)/ && $1 >= 38 && $1 <= 49`	[reply] [d/l] [select]
Re^2: Regex help by ikegami (Patriarch) on Oct 25, 2004 at 22:37 UTC
or `/B(?:3[89]\|4\d)/` or `/B(?!3[0-7])[34]\d/` or `/B(\d\d)(?(?{ $1 < 38 \|\| $1 > 49 })(?=A)(?=Z))/`	[reply] [d/l] [select]
Re^3: Regex help by C_T (Scribe) on Oct 26, 2004 at 17:44 UTC
`/B(?:3[89]\|4\d)/` [download] This worked like a charm, and really helped me understand the proper syntax of the conditional test. Thanks much! CT Charles Thomas Madison, WI	[reply] [d/l]
Re^4: Regex help by ikegami (Patriarch) on Oct 26, 2004 at 18:27 UTC
Re: Regex help by JediWizard (Deacon) on Oct 25, 2004 at 22:30 UTC
Another method: `m/B(?:3[89]\|4\d)/` May the Force be with you	[reply] [d/l]
Re^2: Regex help by Anonymous Monk on Oct 26, 2004 at 14:39 UTC
That would match `B4๖`: `m/B(?:3[89]\|4\d)/ and print for "B4\x{E56}"` [download] With the arrival of Unicode, it's wrong to use `\d` if you mean `[0-9]`.	[reply] [d/l] [select]
With Unicode, \d is wrong if you mean [0-9] by Happy-the-monk (Canon) on Oct 26, 2004 at 15:04 UTC
With the arrival of Unicode, it's wrong to use \d if you mean [0-9]. This worries me. What happened when I wasn't paying attention? Will most of my code that's processing text containing digits break as soon as the input contains unicode? Cheers, Sören	[reply]
Re: With Unicode, \d is wrong if you mean [0-9] by TimToady (Parson) on Oct 26, 2004 at 15:40 UTC
Re: With Unicode, \d is wrong if you mean [0-9] by olivierp (Hermit) on Oct 26, 2004 at 15:44 UTC
Re: With Unicode, \d is wrong if you mean [0-9] by hardburn (Abbot) on Oct 26, 2004 at 15:46 UTC
Re^2: With Unicode, \d is wrong if you mean [0-9] by hv (Prior) on Oct 27, 2004 at 10:40 UTC
Some notes below your chosen depth have not been shown here
Re: Regex help by olivierp (Hermit) on Oct 26, 2004 at 11:06 UTC
Yet another way, with the conditional `/B[34](?(?<=3)[89]\|[0-9])/` [download] HTH -- Olivier	[reply] [d/l]

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