Python from Wise Guy's Viewpoint

[prunesquallor at comcast.net]

gt5163b at prism.gatech.edu (Brian McNamara!) writes:

> If I have read that correctly, it looks like it admits these Haskell
> types:
>
>    lookup :: 
>       (Eq k)=> k -> Map k v -> (v -> a) -> a -> a
>    lookupDefault :: 
>       (Eq k)=> k -> Map k v -> Map k v -> (v -> a) -> a -> a
>    transformList :: 
>       (Eq k)=> k -> Map k v -> Map k v -> ([a] -> b) -> (k -> a) -> [b]
>
> Actually, rewriting all of these functions using the Error monad would
> make it all more elegant.

True.  

Monads are relative newcomers to the Lisp world.  You won't see them
very often.

The other problem is that monads don't compose.