On Jul 16, 2009, at 6:18 PM, Yitzchak Gale wrote:
This, and just about all of the other "similar" types mentioned
in this thread, are all new names for the venerable "ListT Done Right"
that has been around for many years:
http://www.haskell.org/haskellwiki/ListT_done_right
The ListT that is (still, unbelievably) in the mtl package
is very broken, and shouldn't be used. It's not even
a monad - it doesn't satisfy the monad laws.
So why make up new names? Just call it ListT.
I did call it ListT, although I did place it in the "generator" package.
Now I split the package so ListT is in the "List" package (better name
- I agree)
List: List monad transformer and typeclass. Standard list operations.
generator: Python-generator notation for creation of monadic lists.
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