Re: Proposal: Add an analogue of $! to deepseq

On Friday 01 July 2011, 09:55:40, Ivan Lazar Miljenovic wrote:

I propose we add a operator - tentatively labelled $!! (and which Hayoo reports isn't currently exported by a Hackage package) - as a deepseq analogue $! to the deepseq library:

($!!) :: (NFData a) => (a -> b) ->a -> b f $!! x = x `deepseq` f x

infixr 0 $!!

I think that would be useful.

As a sub-proposal, I also propose that we add a "force" function (the name of which also seems to be unused) to make it easier to test forcing of values:

force :: (NFData a) => a -> a force x = x `deepseq` x

Could also be useful.

Discussion time: 2 weeks

+1