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  1. $_ = '12:34:56:78:90';
  2. s/\G((?!^).*?|[^:]*:.*?):/$1/g;
  3. print $_;
Success #stdin #stdout 0s 4596KB
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stdin
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Standard input is empty
stdout
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12:34567890
https://ideone.com/YXnIJ
language:
Perl (perl 5.28.1)
created:
13 years ago
visibility:
public

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