On May 7, Craig Moynes/Markham/IBM said:
>mmmm interesting ideas. I will definitely use the self-documenting
>variable creation method, extra assignments be damned :)
>
>Would it also be wise to use the qr// ?
>
>Such as:
>my $shortDayName = qr/(Mon|Tue|Wed|Thu|Fri|Sat|Sun)/;
>
>then for example I could do:
>my $abcXYZ = qr/$shortDayName ABC/;
You don't need to use the ()'s in the regex if you don't plan on capturing
anything, by the way.
Also, qr// is very helpful. Watch:
my $shortDayName = "Mon|Tue|Wed|Thu|Fri|Sat|Sun";
my $abcXYZ = "$shortDayName ABC";
Sadly, $abcXYZ is rendered as
Mon|Tue|Wed|Thu|Fri|Sat|Sun ABC
which puts the " ABC" as part of matching "Sun". Not what you'd like.
my $shortDayName = qr/Mon|Tue|Wed|Thu|Fri|Sat|Sun/;
my $abcXYZ = qr/$shortDayName ABC/;
Here, $abcXYZ is rendered as
(?-ismx:(?-ismx:Mon|Tue|Wed|Thu|Fri|Sat|Sun) ABC)
Perhaps it's a bit more noise, but that's how the regexes are
formed. Note the (?:...)s.
--
Jeff "japhy" Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/
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