On Sep 27, claement claementson said:
>1. I'm trying to pass a regexp in $bandNameRE through to a while loop, but
>it keeps bailing complaining about an "unrecognised escpape \S", but when I
>put the regexp directly into the condition it's happy. Why is this?
That's because you're using a double-quoted string. Regexes are a
slightly different form of "string". If you use a string to hold a regex,
you'll need to use single quotes, or use backslashes in double quotes:
$re = '\w+-\d+';
# or
$re = "\\w+-\\d+";
You'd probably want double-quotes since you want to put a variable in the
regex. But there's another way...
>2. The other thing is that $name could be upper or lower case. I know I need
>to chuck \i into the regexp, which I assumed would be (^$bandName\i)(\S)(.*)
>but quite clearly isn't.
You can add the /i, /m, /s, and /x modifiers to a part of the regex by
using the (?i) construct:
$re = '(this)((?i)that)'; # matches thisTHaT but not THISTHaT
or the (?i:) construct, which does both grouping (not capturing) and sets
a modifier at the same time:
$re = '(this)(?i:that)'; # like above
But you want to use qr//. This creates a regex object.
$re = qr/(^$name)(\S)(.*)/i;
Ta da! Looks like a regex in action, kinda. And you can use it like so:
if (/$re/) { ... }
or
if ($str =~ /$re/) { ... }
# or
# if ($str =~ $re) { ... }
--
Jeff "japhy" Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/
RPI Acacia brother #734 http://www.perlmonks.org/ http://www.cpan.org/
** Look for "Regular Expressions in Perl" published by Manning, in 2002 **
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