[Cialug] OT: can somebody help me with a regular expression?

[Chris Freeman]

Yes, (|D|PP) is nothing, 'D', or 'PP'.

I'm not sure what zero you're referring to, though. I didn't post it, but
'0' and 'D0' and 'PP0' match.

The basics are:
match a leading nothing, 'D' or 'PP', followed by between 1 and 3 digits,
followed by zero or more sets of three digits with an optional leading
comma.

I just realized there's a slight problem with this: '1,234567' will match,
which isn't ideal. You'll have to decide if that's significant. If so, split
it into two regexes, one with commas and one without. Otherwise, you could
do this (not recommended due to obtuseness):

(\s|^)(|D|PP)\d{1,3}(,(\d{1,3}(,\d{1,3})*)|(\d{1,3})*)(\s|$)

This will match '12,345,678' and '12345678', but not '12,345678'.

Chris

On Fri, Jul 25, 2008 at 10:23 PM, Nathan C. Smith <nathan.smith at ipmvs.com>wrote:

> Is this- (|D|PP) Nothing, or D or PP ?  Interesting.
>
> Yeah, 0 probably should be a possibility.
>
> Thank-you for your help with this little puzzle.
>
> -Nate
>
>
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