in reply to Re^2: Why do we need $a and $b to be special?
in thread Why do we need $a and $b to be special?

I didn't know that. How would the $$ prototype be seen in a CODE ref? Would it still work?

Just apply the prototype to the coderef, for example:

my $sort = sub ($$) { $_[0] cmp $_[1] };
my @sorted = sort $sort @unsorted;

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In Section Meditations