Try something like: 

c:\@Work\Perl\monks>perl -wMstrict -MData::Dump -le
"my @lines = (
   'foo: 12 : //comment twelve ',
   'bar: 13 : //comment thirteen',
   'foo:  5  : //comment five',
   );
 ;;
 my %hash;
 for my $line (@lines) {
   my ($k, $v) = split qr{ : \s+ }xms, $line, 2;
   push @{ $hash{$k} }, $v;
   }
 dd \%hash;
"
{
  bar => ["13 : //comment thirteen"],
  foo => ["12 : //comment twelve ", "5  : //comment five"],
}

[download]
push-ing to an  @{ ... } array referenced by a hash key  $hash{$k} autovivifies an array reference if it did not already exist. See "autovivification" in perlglossary and here.

Give a man a fish:  <%-{-{-{-<

In reply to Re^3: Copying files from one file to another file by AnomalousMonk
in thread Copying files from one file to another file by harishnv

Title:
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