I'm tracking down a performance problem (likely some bad regexp) and have a file of existing regexps that is used to filter content. I have been away from Perl for too long a time...

So I want to read the file line by line and convert each to a regexp that I will apply against a reference text (32K) and record the time. The key is to identify the worst ones to look for rewriting. My logic to date is:

while (<FILE>) {
   chomp{$_);
   if(length $_ > 1)
{
   $regex =~ $_;
   $_=$sampletext;
   if(/$regex/)
  {

   }
}}

I'm getting uninitialized values in pattern match and suspect that I have a minor error somewhere -- but can't spot it.

In reply to Reading and executing RegExp from text file by KLassesen

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