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propensive's profile
Jon Pretty
Jon Pretty
Jon Pretty
@propensive

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Jon Pretty

@propensive

Supporting Scala through professional training and open-source software. Responsible for Magnolia, Fury, Scala World and Functional Africa.

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propensive.com
Joined July 2010

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    1. Jon Pretty‏ @propensive 20 Feb 2014

      Is there an easier way of writing this? type +[X[_],Y[_]]=({type M[I]=({type L[J[_],K[_]]=Either[J[I],K[I]]})})#M[F]#L[X,Y] forSome {type F}

      3 replies 2 retweets 3 likes
    2.  🔴 Lars Hupel‏ @larsr_h 20 Feb 2014
      Replying to @propensive

      @propensive Isn't this the same? type +[X[_],Y[_]] = Either[X[F],Y[F]] forSome {type F}

      1 reply 0 retweets 0 likes
    3. Jon Pretty‏ @propensive 20 Feb 2014
      Replying to @larsr_h

      @larsr_h I think it is :) It looks like my attempted starting point, but differs in that it works!

      2 replies 0 retweets 0 likes
    4. Miles Sabin‏ @milessabin 21 Feb 2014
      Replying to @propensive

      @propensive @larsr_h I can't help thinking that that existential spells doom though.

      3 replies 0 retweets 0 likes
      Jon Pretty‏ @propensive 21 Feb 2014
      Replying to @milessabin

      @milessabin @larsr_h I'm not even sure if my wish is unambiguous in general, but type F[_] = List + List works fine with Lars's solution.

      1:29 AM - 21 Feb 2014
      0 replies 0 retweets 0 likes

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