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  1. use strict;
  2. use warnings;
  3.  
  4. my @cases = qw(TF=22; BT=22; =220;);
  5. for my $str (@cases) {
  6.     my @matches = $str =~ /^TF=\d{1,2};$/;
  7.     if (@matches) {
  8.         print "Got it: $str -> $matches[0]\n";
  9.     } else {
  10.         print "Nothing to do with: $str\n";
  11.     }
  12. }
Success #stdin #stdout 0s 4684KB
comments (?)
stdin 
Standard input is empty
stdout 
Got it: TF=22; -> 1
Nothing to do with: BT=22;
Nothing to do with: =220;
https://ideone.com/mcUjhz
language:
Perl (perl 5.28.1)
created:
11 years ago
visibility:
public

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