Damian~
On Mon, 21 Feb 2005 08:29:40 +1100, Damian Conway <[EMAIL PROTECTED]> wrote: > Nicholas Clark wrote: > > > On Sun, Feb 20, 2005 at 07:41:16PM +1100, Damian Conway wrote: > > > > Given this: > > > > > >> my $x = set(1..3); > >> my $y = set(1,3,5,7,9); > >> my $n = 2; > >> > >> $x | $y # set(1,2,3,5,7,9) > >> $x & $y # set(1,3) > >> $x - $y # set(2) > >> !$x # set(none(2)) ;-) > > > > > > I don't understand this last line, even given the context of the preceding > > three. Why is it none of 2, rather than none of something else? > > ESTUPIDDAMIAN. > > Should, of course be: > > !$x # set(none(1..3)) ;-) > > Damian > > PS: This is also a demonstration of the awesome power of junctions: that we > can specify the complement of a set without knowing its universal set! Or one more thing to drive the mathematicians into a rage... Matt -- "Computer Science is merely the post-Turing Decline of Formal Systems Theory." -???
