RE: [Haskell] IO, exceptions and error handling

Keith Wansbrough wrote:

s/fail/error/ s/return//

Then you can easily write

...

I can't (easily) write

text c = sqr x + sqr (x+1)

You just can't *catch* this outside the IO monad.

Of course... that was my second alternative error strategy. I'm interest in how/when people decide when to throw exceptions versus when to thread errors using monads, given that changing code from one to the other could be quite a big deal. Tim