I don't have a strong opinion on the choice of syntax, but am a major +1 on combining the two imports into one. On Wed, Jun 3, 2015, at 10:15, Anthony Cowley wrote:
Hi Everyone,
I didn't think this would see any resistance as it doesn't break anything, but this is the internet, so, if you haven't already, take a look at this GHC feature request https://ghc.haskell.org/trac/ghc/ticket/10478
The idea is that rather than writing,
import Data.Map (Map) import qualified Data.Map as M
you could instead write,
import Data.Map (Map) as M
The Map identifier would imported unqualified, while M would be introduced as an alias for the qualified import of Data.Map.
Note that, currently, following a parenthesized group with the "as" keyword is a parse error. So allowing this syntax would not affect any currently working programs.
I've mentioned this proposal before and gotten good response, so I finally wrote it up last night after people on IRC responded positively to it. As well as IRC and trac, I put the link up on Twitter to get it in front of a large audience, and here's what we have after a bit over 12 hours (not counting the handful of supporters in IRC):
+20 -2
You can see the tweet at https://twitter.com/a_cowley/status/605909841148702720
I'll try to summarize the two negative votes: 1) This isn't that big a burden, and we should instead focus on controlled export of class instances; and 2) We should instead focus on exporting name spaces, and that the ordering of parentheses and the "as" keyword is too close to the existing "import Foo as F(foo)" syntax.
Since there are these negative votes, I think it best if as many people as possible at least see the proposal so the GHC developers can get a better sense for the overall response.
Anthony _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe