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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. Dave Nicponski  ✍️‏ @virus_dave 17 Jun 2019
      Replying to @propensive

      Awesome! How was your experience modifying the type checker? And compared to nsc scalac one?

      1 reply 0 retweets 0 likes
    3. Jon Pretty‏ @propensive 17 Jun 2019
      Replying to @virus_dave

      I actually dared to try modifying Dotty! I never tried to change NSC. Though I'm not sure how fair that is... the bar was lower because I knew my change might actually stand some slim chance of being accepted into Scala 3, when it wouldn't into Scala 2.

      1 reply 0 retweets 0 likes
      Jon Pretty‏ @propensive 17 Jun 2019
      Replying to @propensive @virus_dave

      Nevertheless, the change was straightforward and I was able to find my way around by grepping for things I expected to find.

      10:24 AM - 17 Jun 2019
      • 1 Like
      • Dave Nicponski ✍️
      0 replies 0 retweets 1 like

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