14 Oct
2005
14 Oct
'05
5:49 a.m.
--- Cale Gibbard <cgibbard@gmail.com wrote:
As an example of this sort of thing, I know that there are only 4 values of type a -> Bool (without the class context). They are the constant functions (\x -> True), (\x -> False), and two kinds of failure (\x -> _|_), and _|_, where _|_ is pronounced "bottom" and represents something along the lines of nontermination (aborting the program also counts).
Not exactly. There are also (\x -> seq x True) and (\x -> seq x False), neither of which is equivalent to any of the four functions above. Regards, Janis Voigtlaender.