Couldn't you make a flag variable and define a sort block? Concept: 
$changed = 0;
my @array = sort {
  my $result = ($a cmp $b);
  $changed = 1  if $result==1; # Only set changed if $a > $b
  $result
} @oldarray;

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In reply to Re: Fast way to check if a sort was doen by archfool
in thread Fast way to check if a sort was doen by Outaspace

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