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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 9 Aug 2017
      Replying to @oxnrtr @missingfaktor

      Are you aware of Dotty's syntactic sugar for enums?

      1 reply 0 retweets 1 like
    2. soc‏ @oxnrtr 9 Aug 2017
      Replying to @propensive @missingfaktor

      Yep. It's a complete&utter trainwreck. Having made multiple enum impls over the years, I'd have died in shame proposing something like that.

      1 reply 0 retweets 0 likes
    3. Jon Pretty‏ @propensive 9 Aug 2017
      Replying to @oxnrtr @missingfaktor

      Is the problem that they don't quite offer a complete replacement for sealed traits and case classes?

      1 reply 0 retweets 0 likes
    4. soc‏ @oxnrtr 9 Aug 2017
      Replying to @propensive @missingfaktor

      I think I found 6 or 7 design mistakes. Each significant enough to outright reject this proposal. But SIP process doesn't apply anyway.

      1 reply 0 retweets 0 likes
    5. Jon Pretty‏ @propensive 9 Aug 2017
      Replying to @oxnrtr @missingfaktor

      Not to Dotty, it doesn't... but Martin did change the proposal in response to feedback on his PR, so it's not like it was a closed process.

      1 reply 0 retweets 0 likes
    6. soc‏ @oxnrtr 9 Aug 2017
      Replying to @propensive @missingfaktor

      I don't think any changes can fix it. It's not only what it does, but that the whole thing is a confused, sprawling, over-complicated mess.

      2 replies 0 retweets 0 likes
    7. Jon Pretty‏ @propensive 9 Aug 2017
      Replying to @oxnrtr @missingfaktor

      I think the risk is that it provides concise support for something you can already do, and costs one feature, and less syntax uniformity.

      1 reply 0 retweets 0 likes
    8. soc‏ @oxnrtr 9 Aug 2017
      Replying to @propensive @missingfaktor

      I made some comments about the issues with Dotty's enum design a while ago. Repeating well-known mistakes over and over–this lang is doomed.pic.twitter.com/l1apcbHALL

      1 reply 2 retweets 1 like
    9. Jon Pretty‏ @propensive 9 Aug 2017
      Replying to @oxnrtr @missingfaktor

      Thanks - that's a more constructive teardown, even though I don't agree with all of it. :)

      2 replies 0 retweets 0 likes
    10. soc‏ @oxnrtr 9 Aug 2017
      Replying to @propensive @missingfaktor

      To follow up on that, this is the proposal/implementation I'm talking about: https://gist.github.com/soc/c8df5d28f20716a7e98823a79d1ad082 …

      1 reply 0 retweets 0 likes
      Jon Pretty‏ @propensive 9 Aug 2017
      Replying to @oxnrtr @missingfaktor

      Thanks, Simon. It's less ambitious than Dotty's enum, but that's not necessarily a criticism; it just makes some comparisons a bit unfair.

      10:42 AM - 9 Aug 2017
      4 replies 0 retweets 0 likes
        1. Jon Pretty‏ @propensive 9 Aug 2017
          Replying to @propensive @oxnrtr @missingfaktor

          Next time I find myself looking at enums in Dotty, I'll do a side-by-side comparison. Not this week, though...

          0 replies 0 retweets 0 likes
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        1. soc‏ @oxnrtr 9 Aug 2017
          Replying to @propensive @missingfaktor

          Issues are not resolved by adding more features, they are addressed by dropping features until only the essence remains. 4 years of lessons.

          1 reply 0 retweets 0 likes
        2. Jon Pretty‏ @propensive 9 Aug 2017
          Replying to @oxnrtr @missingfaktor

          This, I think, is an overgeneralization. There's plenty of selective evidence to support this "lesson" but we can also find counterexamples.

          1 reply 0 retweets 0 likes
        3. Show replies
        3. New conversation
        1. soc‏ @oxnrtr 9 Aug 2017
          Replying to @propensive @missingfaktor

          Idea of this was to fix an issue while adding close to zero footprint. It looks less ambitious because that's the core design requirement.

          2 replies 0 retweets 1 like
        2. Jon Pretty‏ @propensive 9 Aug 2017
          Replying to @oxnrtr @missingfaktor

          I understand. It's just that Dotty enums are a "disaster" at solving this task only insofar as Scala is a disaster as, say, an XML checker.

          0 replies 0 retweets 0 likes
          3. End of conversation
        4. New conversation
        1. soc‏ @oxnrtr 9 Aug 2017
          Replying to @propensive @missingfaktor

          For comparison, this is the spec draft of enums from 2014 before I started cutting down on feature & lang footprint: https://docs.google.com/document/d/1mIKml4sJzezL_-iDJMmcAKmavHb9axjYJos_7UMlWJ8/edit?usp=sharing …

          1 reply 0 retweets 0 likes
        2. Rahul Goma Phulore‏ @missingfaktor 9 Aug 2017
          Replying to @oxnrtr @propensive

          Unsubscribe, please. Phone's been buzzing.

          1 reply 0 retweets 0 likes
        3. Show replies

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