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  1. or download this
    my %h = ( a => 1, b => 2, c => 3 );
print "$k => $h{$k}\n" for my $k (sort keys %h);
  2. or download this
    syntax error at D:\progs\perl\junk.pl line 5, near "$k ("
Execution of D:\progs\perl\junk.pl aborted due to compilation errors.
  3. or download this
    for my $k ( sort keys %h ) {
  print "$k => $h{$k}\n";
};