This does actually work the way you expected, set up some subs with known names, then give the sort routine a variable containing that name:

sub ascii {$a cmp $b}
sub alpha {lc($a) cmp lc($b)}

@a = qw(a A b B D d c C);

$subname = 'ascii';

@sorted = sort $subname @a;

print @sorted;

$subname = 'alpha';

@sorted = sort $subname @a;

print @sorted;

[download]

If you are having trouble with an earlier version of perl, then first try upgrading, failing that, you can always use eval:

 eval '@sorted = sort ' . $subname . ' @unsorted';

But that's icky, so try not to do that.

In reply to RE: Dynamic sort algorithm selection by quidity
in thread Dynamic sort algorithm selection by Sentinel

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