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dwijnand's profile
Dale Wijnand
Dale Wijnand
Dale Wijnand
@dwijnand

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Dale Wijnand

@dwijnand

@scala_lang team at @lightbend. Interested in FP, tooling & API/library design. Ex @scala_sbt maintainer.

London
Joined June 2009

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    1. Jon Pretty‏ @propensive 4 Apr 2017

      I was told last night that type `A with B` != `B with A` even though each subtypes t'other. I'm not convinced. Can anyone explain it to me?

      3 replies 0 retweets 4 likes
    2. Jon Pretty‏ @propensive 4 Apr 2017

      By what aspect of *type* theory breaks if we assume `A with B` == `B with A`? I might be asking the wrong question, here...

      1 reply 0 retweets 0 likes
    3. Dale Wijnand‏ @dwijnand 4 Apr 2017
      Replying to @propensive @fommil

      If only I could search scala-internals for <:< or =:= ........

      1 reply 0 retweets 0 likes
    4. Jon Pretty‏ @propensive 4 Apr 2017
      Replying to @dwijnand @fommil

      You could narrow it down by filtering on @contrarivariant...

      1 reply 0 retweets 1 like
    5. Dale Wijnand‏ @dwijnand 4 Apr 2017
      Replying to @propensive @fommil @contrarivariant

      apparently there are 650 topics by Paul in scale-internals..

      1 reply 0 retweets 1 like
      Dale Wijnand‏ @dwijnand 4 Apr 2017
      Replying to @dwijnand @propensive and

      https://groups.google.com/d/msg/scala-language/vH_g2aAM62Q/iYqs_ARHgOsJ … (via https://groups.google.com/d/topic/scala-internals/qAICKMOa_f0 …) keywords: isSubType type-equivalence symmetrypic.twitter.com/oumpLUzyeD

      4:08 AM - 4 Apr 2017
      • 2 Likes
      • J Jon Pretty
      1 reply 0 retweets 2 likes
        1. Jon Pretty‏ @propensive 4 Apr 2017
          Replying to @dwijnand @fommil @contrarivariant

          Thanks for the digging!

          0 replies 0 retweets 1 like
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