[Haskell-cafe] Slightly Offtopic in Part

[Dan Weston]

For more details, look for a function called "orElim" in the write-up

http://www.thenewsh.com/~newsham/formal/curryhoward/

Dan

Ryan Ingram wrote:
> I'm assuming you mean the rule described in
> http://en.wikibooks.org/wiki/Formal_Logic/Sentential_Logic/Inference_Rules
> 
>> type Disj a b = Either a b
> 
>> disj_elim :: Disj a b -> (a -> c) -> (b -> c) -> c
>> disj_elim (Left a) a2c b2c = a2c a
>> disj_elim (Right b) a2c b2c = b2c b