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Re: Zip Codes ctype? Pregmatch? [message #182653 is a reply to message #182652] Thu, 22 August 2013 02:09 Go to previous messageGo to previous message
BootNic is currently offline  BootNic
Messages: 10
Registered: November 2010
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Junior Member
In article <kv3hd4$p9g$1(at)speranza(dot)aioe(dot)org>, Twayne <nobody(at)spamcop(dot)net>
wrote:

[snip]

> One slight correction: the Canadian valid letters are:
> abc e gh jklmn p rst vxy .

The second and third letters may also contain [WZ]

https://maps.google.com/maps?q=B0W+1H0

https://maps.google.com/maps?q=A1W+4Z1

The pattern you posted in: Message-ID: <kv11lq$8eb$1(at)speranza(dot)aioe(dot)org>

[url]
https://groups.google.com/d/msg/comp.lang.php/D-OKMe-iZa4/ARnTsmDHSdIJ
[/url]

"^([ABCEGHJKLMNPRSTVXY]\d[ABCEGHJKLMNPRSTVWXYZ])" .
"\ {0,1}(\d[ABCEGHJKLMNPRSTVWXYZ]\d)$"

seem to work as it is.


^(?=.{3} ?.{3})(?!.{0,}[DFIOQU]|[WZ])(?:[A-Z] ?\d){3}$

• (?=.{3} ?.{3}) Positive lookahead

◦ string matches [3 charters] [optional space] [3 charters]

▪ charters are restricted in the rest of the expression

▪ remove the question mark to make the space required

• (?!.{0,}[DFIOQU]|[WZ]) Negative lookahead

◦ .{0,}[DFIOQU] string may not contain ‘DFIOQU’

◦ [WZ] string may not start with ‘W’ or ‘Z’

• (?:[A-Z] ?\d){3} Basic pattern repeat 3 times

◦ [any letter A-Z] [optional space] [any digit 0-9]

▪ spaces are restricted (index 3 or none) in the Positive lookahead

▪ letters are restricted in the Negative lookahead

[snip]





--
BootNic Wed Aug 21, 2013 10:09 pm
The human mind treats a new idea the same way the body treats a strange
protein; it rejects it.
*P. B. Medawar*

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