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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 16 Jun 2019

      I had a go at modifying the Scala 3 type system to support inline arithmetic in singleton literals. The compiler will now typecheck this: import compiletime._ the[(2 + 2)*2 =:= 5 + 3] https://github.com/propensive/dotty/tree/typelevel-singleton-literal-type-arithmetic …

      4 replies 11 retweets 75 likes
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    2. Jon Pretty‏ @propensive 16 Jun 2019

      Thanks to Oron Port for the hint to get me started!

      2 replies 0 retweets 4 likes
      Show this thread
    3. Frank Thomas‏ @fst9000 16 Jun 2019
      Replying to @propensive

      What do you think about implementing <, >, <=, etc.? I've a use-case in refined where I'd like to write the following: implicit def greaterImplies[A, B](implicit ev: A > B): Greater[A] Implies Greater[B] = ... which does not compile if A <= B

      1 reply 0 retweets 0 likes
      Jon Pretty‏ @propensive 16 Jun 2019
      Replying to @fst9000

      I can give it a try on my next flight!

      6:55 AM - 16 Jun 2019
      • 2 Likes
      • Calvin L F Frank Thomas
      0 replies 0 retweets 2 likes

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