[Chicago-talk] Using a hash in a regex
Andy Lester
andy at petdance.com
Thu Jul 13 13:34:25 PDT 2006
On Jul 13, 2006, at 3:32 PM, Jay Strauss wrote:
> Hi,
>
> How do you use a hash in a regex? I remember it being mentioned but I
> couldn't find it in the archives. For example,
>
> %h = (this=>1, that=>2);
>
> $s = "this is a test";
>
> # now what I'd like to do is:
> my $n = m/$s/%h/; #and have $n = 1;
>
> I can't google how to do it. I know I could loop thru the hash
> (like I'm
> doing now) but I could have sworn I could use it in the regex.
No, you have to loop manually.
for my $key ( keys %h ) {
if ( m/$s/$key/ ) {
$n = $h{$key};
}
}
--
Andy Lester => andy at petdance.com => www.petdance.com => AIM:petdance
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