On Sun, 2009-07-26 at 02:34 +0100, Ian Lynagh wrote: > Hi all, > > I've made a ticket and proposal page for making the labelled field > syntax stricter, e.g. making this illegal: > > data A = A {x :: Int} > > y :: Maybe A > y = Just A {x = 5} > > and requiring this instead: > > data A = A {x :: Int} > > y :: Maybe A > y = Just (A {x = 5})
I think I don't like it. It makes the "labelled function argument" trick much less nice syntactically. ... <- createProcess proc { cwd = Just "blah" } This is especially so if the labelled function argument is not the final parameter since then one cannot use $, you'd have to put the whole thing in ()'s. The labelled argument technique is one I think we should be making greater use of (eg look at the proliferation of openFile variants) so I don't think we should be changing the syntax to make it harder / uglier. Duncan _______________________________________________ Haskell-prime mailing list Haskell-prime@haskell.org http://www.haskell.org/mailman/listinfo/haskell-prime