Re: Proposal to deprecate and then drop fromJust

Hi, Maybe move fromJust and other partial functions (head, !!, ..) into `partial` compatibility package? When you need ones, you can get them, but it will be explicit. - Oleg

On 24 Feb 2015, at 07:42, Erik de Castro Lopo wrote:

Hi all,

We currently have in the Data.Maybe module from base:

fromJust :: Maybe a -> a

which newbies often find using hoogle or other search tools and is a huge trap. *Every* usage of the above can be replaced by using

fromMaybe :: a -> Maybe a -> a

which forces the user to provide a default value for the case where the Maybe a is a Nothing.

The idea would be to deprecate fromMaybe for 7.12 and remove it completely later.

Comments?

Erik -- ---------------------------------------------------------------------- Erik de Castro Lopo http://www.mega-nerd.com/ _______________________________________________ Libraries mailing list Libraries@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries