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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 5 Nov 2017

      After a day optimizing ASTs, Magnolia now gets approximately 12x better compile-time performance for typeclass derivation than Shapeless!

      6 replies 11 retweets 66 likes
      Show this thread
    2. Julien Tournay‏ @skaalf 6 Nov 2017
      Replying to @propensive

      Did you manage to deduplicate ?

      1 reply 0 retweets 0 likes
    3. Jon Pretty‏ @propensive 6 Nov 2017
      Replying to @skaalf

      Yes. For starters, I was generating the code for every typeclass twice. 🤦‍♂️But I also reduced my anonymous class count.

      1 reply 0 retweets 0 likes
    4. Jon Pretty‏ @propensive 6 Nov 2017
      Replying to @propensive @skaalf

      And managed to reuse typeclasses repeated in the same case class. Would be nice to deduplicate across case classes, but I'm not there yet.

      2 replies 0 retweets 0 likes
    5. Julien Tournay‏ @skaalf 6 Nov 2017
      Replying to @propensive

      Wow! Impressive. Magnolia really has the potential to be one of those tools that makes Scala so much nicer.

      1 reply 2 retweets 4 likes
    6. cλementd  🚸‏ @clementd 6 Nov 2017
      Replying to @skaalf @propensive

      Wow. I'll scrub my failed attempt with shapeless and try again with magnolia (if it supports the equivalent of LabelledGenerics)

      1 reply 0 retweets 0 likes
    7. Jon Pretty‏ @propensive 6 Nov 2017
      Replying to @clementd @skaalf

      Yes it does. The API gives you labels.

      1 reply 0 retweets 1 like
    8. cλementd  🚸‏ @clementd 6 Nov 2017
      Replying to @propensive @skaalf

      (I haven't looked at it yet, I just know it from what you've told me and the general awe of people who've looked at it) :-)

      1 reply 0 retweets 1 like
      Jon Pretty‏ @propensive 6 Nov 2017
      Replying to @clementd @skaalf

      It's not released yet (in the form I described at Scala.io), but hopefully will be by the end of the week. :)

      1:46 AM - 6 Nov 2017
      • 2 Likes
      • Romain Lecomte cλementd 🚸
      0 replies 0 retweets 2 likes

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