On Wed, Apr 1, 2009 at 12:58 AM, Richard Hainsworth <rich...@rusrating.ru> wrote: > Thinking about Jon Lang's -1|+1 example in another way, I wondered about > simultaneous conditions. > > Consider > > $x = any (1,2,5,6) > > How do we compose a conditional that asks if any of this set of eigenstates > are simultaneously both > 2 and < 5? > Clearly the desired answer for $x is False, but > > my $x = any(1,2,5,6); say ?( 2 < $x < 5); # true > > Is there some combination of any/all that will achieve this?
As Carl indicated, there are other ways to do this. For instance, s/ 2 < $x < 5 / $x ~~ 2 ^..^ 5 /. But as I indicated in a recent email, part of my concern is that those two expressions _ought to be_ equivalent: changing the junction, or making do without one as Carl proposes, doesn't fix this lack of equivalence. As for Carl's proposed alternative: no, it isn't _much_ longer (but it _is_ longer), and _perhaps_ it's _slightly_ more understandable - or perhaps not. Other than making the implementors' lives harder, what's wrong with trying to find a way to get Jonathan's example to work the way people expect it to? I don't understand this aversion to everything remotely hinting of eigenstates/eigenthreads/threshing/whatever. -- Jonathan "Dataweaver" Lang
