Regular Expression Exercise S1

re: Regular Expression Exercise S1

Nat Luengnaruemitchai — Fri, 21 Oct 2005 23:23:38 GMT

^\d{3}-\d{2}-\d{4}$

re: Regular Expression Exercise S1

Dvae — Sat, 22 Oct 2005 06:20:30 GMT

Surely you'd want the hypens to be optional or replaceable by spaces. Forcing a particlular format when enter a number like this, or a credit-card number can be a pain, unless you explictly tell the user in advance the format you want (as you have done).

In any case, I'd use
^\d{3}[-| ]?\d{2}[-| ]?\d{4}$

re: Regular Expression Exercise S1

David — Mon, 24 Oct 2005 13:41:15 GMT

The best tool one can have when working with regular expressions is Regex Coach. http://weitz.de/regex-coach/

re: Regular Expression Exercise S1

James Curran — Mon, 24 Oct 2005 18:01:30 GMT

Dvae:
Yes, but you'd want consistency in the separator use, so that it would accept "123-12-1234", "123 12 1234" or "123121234" but not "12312 1234" or "123-12 1234". Hence we'd need:

^\d{3}(?<Sep>[- ]?)\d{2}\<Sep>\d{4}$

(as interpreted by Regex Workbench)

^ (anchor to start of string)
Any digit
Exactly 3 times
Capture to <Sep>
Any character in "- "
? (zero or one time)
End Capture
Any digit
Exactly 2 times
<Sep>
Any digit
Exactly 4 times
$ (anchor to end of string)

re: Regular Expression Exercise S1

Dave — Mon, 24 Oct 2005 22:53:46 GMT

> Yes, but you'd want consistency in the separator use

True, but if we wanted consistency, then we'd force them to use the properly structured format, and not allow for any variance ;-)

<strike>Dvae</strike> Dave

re: Regular Expression Exercise S1

Richard — Fri, 28 Oct 2005 08:22:18 GMT

Why would I want to match one of those? Completely useless outside the US.

re: Regular Expression Exercise S1

James Curran — Fri, 28 Oct 2005 20:34:43 GMT

Um... So, RIchard, what exactly is the format of a Social Security Number outside the US?

re: Regular Expression Exercise S1

Rob — Sun, 06 Nov 2005 21:33:29 GMT

In the UK it is

AA 00 00 00 A

or

^\w{2} \d{2} \d{2} \d{2} \w$

Eric Gunnerson s C Compendium Regular Expression Exercise S1 | Wood TV Stand

Eric Gunnerson s C Compendium Regular Expression Exercise S1 | Wood TV Stand — Mon, 01 Jun 2009 02:21:59 GMT

PingBack from http://woodtvstand.info/story.php?id=2664

Eric Gunnerson s C Compendium Regular Expression Exercise S1 | Green Tea Fat Burner

Mon, 08 Jun 2009 05:38:36 GMT

PingBack from http://greenteafatburner.info/story.php?id=2272

Eric Gunnerson s C Compendium Regular Expression Exercise S1 | pool toys

Eric Gunnerson s C Compendium Regular Expression Exercise S1 | pool toys — Thu, 18 Jun 2009 11:54:04 GMT

PingBack from http://pooltoysite.info/story.php?id=3255