Ha, stupid memory allocation tricks 

my @f = ( 4, 2 );
print join ' ', int \$_, \$_, "$_\n" for @f;print "\n";
@f = sort @f;
print join ' ', '#', int \$_, \$_, "$_\n" for @f;print "\n";
my $prev = 0;
for my $next ( @f ){
    if( $prev ){
        die "BEEN SORTED" if $prev > \$next;
    }
    $prev = \$next;
}
__END__
$ perl fa
4165804 SCALAR(0x3f90ac) 4
4165980 SCALAR(0x3f915c) 2

# 4165980 SCALAR(0x3f915c) 2
# 4165804 SCALAR(0x3f90ac) 4

BEEN SORTED at fa line 8.

[download]

In reply to Re^2: Check if sort has changed order (eq) by Anonymous Monk
in thread Check if sort has changed order by HYanWong

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