Re: Proposal to deprecate and then drop fromJust

Roman Cheplyaka wrote:

Say I have

parse :: String -> Maybe Value process :: Value -> IO ()

Then (process . fromJust . parse) is the fastest way to compose the two.

Wouldn't process fromMaybe defaultValue . parse do as well?

So I'm -1 on dropping fromJust, but I don't object to adding a deprecation warning to it.

<snip>

Then again, why aren't we doing the same to head&tail?

I'd be very much in favour of that and would also add init and last. However, these are pretty easy to avoid with a custom prelude and the NoImplicitPrelude pragma. Erik -- ---------------------------------------------------------------------- Erik de Castro Lopo http://www.mega-nerd.com/