Re: [Haskell-cafe] Stream fusion for Hackage

simonpj:

| > Will it eventually replace Data.List in GHC? | | That is the plan, yep.

But first we need to solve the concatMap problem, no?

So far as I know, fold/build has the property that if fusion doesn't happen, no harm is done. But streams risk making the program *worse* if Good Things do not happen to happen. This makes me anxious.

Simon

Yep, me too. We'll be using it in ByteString and other strict arrays first, where the issues are much simpler, then looking at what can be done with lists. -- Don