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  1. #!/usr/bin/perl
  2. use feature 'say';
  3. use strict;
  4. use warnings;
  5. #use re 'debug'; 
  6.  
  7. my $str = "some 123 string";
  8. say $str =~ s/\D+//gr;
Success #stdin #stdout 0s 18520KB
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stdin
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Standard input is empty
stdout
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123
https://ideone.com/gTqecm
language:
Perl (perl 5.28.1)
created:
6 years ago
visibility:
secret

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