On Fri, Jul 8, 2011 at 00:42, Christopher Howard
I tried just defining
⊥ = undefined
But ghc won't parse that. Why is this? And is there a way to make it work?
The language spec divides characters up as being identifier characters vs. punctuation, using the rules for Unicode; ⊥ is the latter. As such, it can only appear infix or within parentheses, the latter being the syntax to use an operator as a function; compare (+) and note that it's the trivial case of section syntax). So if you're willing to settle for using it as "(⊥)" everywhere (*including* when defining it) then you can do it, but bare "⊥" isn't legal. -- brandon s allbery allbery.b@gmail.com wandering unix systems administrator (available) (412) 475-9364 vm/sms