Re: numbers and strings and regex?



Geoff Cox wrote:

I have a series of files such as

blue-green-01-01.doc to blue-green-01-09
blue-green-01-11 up to
blue-green-01-32

and am trying to evaluate the second set of 2 digits using File::Find
and this bit of code

if ($name =~ /.*?(\d{2})-((\d{1})(\d{1}))\.jmx/i) {
my $both = $2;
my $first = $3;
my $second = $4;

                          if ($4 <= 9)
                         { $exnum = $4;
                         }
                         else {my $exnum = $both;
                         }

obviously something wrong here - where am I wrong?

Rather hard to know where to start at a guess the central problem is that $4 is a single digit so ( $4 <= 9 ) is always true. You are also capturing subexpressions you don't need.

You you appear to be delaring $esnum in the wrong place.

I also suspect you be anchoring your regex to the end of the string raher than using .* to find the last match.

Perhaps you should try something simple like...

 if ($name =~ /\d{2}-(\d{2})\.jmx$/i)    {
    my $exnum = 0+$1;
 }
.

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