On Thu, Nov 13, 2008 at 05:02:56PM +0100, TSa wrote: > HaloO, > > Patrick R. Michaud wrote: >> I expect that $a will become one(True, False, True). $a doesn't >> collapse to a non-Junction False until it is used in a boolean context. > > My proposal is a different unification behavior in one() junctions. > >> my $a = one(1,2,3) % 2 == 1; >> --> my $a = one(1%2, 2%2, 3%2) == 1; > > --> my $a = one(1,0,1) == 1; > --> my $a = one(0) == 1; > >> --> my $a = one(1%2 == 1, 2%2 == 1, 3%2 == 1); > > --> my $a = one(0 == 1) > >> --> my $a = one( True, False, True ); > > --> my $a = one(False); > >> I agree that one() with collapsing values isn't dwimmy (or useful), >> which is part of the reason for my original message. > > I agree as well, but make a different proposal how to resolve it. > BTW, how does an empty junction work? That could happen not only > with one() but also through one(1,2,1,2) in my proposal. So one() > is just another way of writing False ;)
It seems simpler to say that one() produces bags rather than sets. Larry
