On 2004-10-07, J. Garrett Morris <[EMAIL PROTECTED]> wrote:
> I can run both of those without a problem - could you post more of
> your code? It's probably somewhere else. /gXm
You're right; I must have goofed somewhere. But I don't have real code
yet, since I can't figure out the basic way of doing things. Here was
my latest attempt:
getOrSet :: Maybe Int -> State Int Int
getOrSet m = case m of
Nothing -> do
n <- get
return n
Just x -> do
put x
return x
But it doesn't seem to really be useful.
When I try execState/evalState, it just return my argument when I call
it with Nothing, or the thing passed to Just when I call it with that.
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