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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. Jonathan Winandy‏ @ahoy_jon 6 Aug 2018

      However I don't have the same runtime performance as with shapeless. Optim in progress !

      1 reply 0 retweets 1 like
      Show this thread
    2. François Armand‏ @fanf42 7 Aug 2018
      Replying to @ahoy_jon

      I believe @propensive would be much interested to know the example and impact

      3 replies 0 retweets 1 like
    3. Jonathan Winandy‏ @ahoy_jon 7 Aug 2018
      Replying to @fanf42 @propensive

      I will fix the perf!

      1 reply 0 retweets 1 like
    4. Jon Pretty‏ @propensive 7 Aug 2018
      Replying to @ahoy_jon @fanf42

      I'm planning to take a quick look at this with @fommil today. He's doing some profiling now. I won't have time until the evening, but go ahead and share ideas if you have any! I have some changes planned to avoid constructing various intermediate objects.

      1 reply 0 retweets 1 like
    5. This Tweet is unavailable.
    6. Jonathan Winandy‏ @ahoy_jon 7 Aug 2018

      It's exactly that, issue is in the code, not in magnolia, but the code is structured by magnolia. Maybe that https://github.com/propensive/magnolia/issues/107 … (or https://github.com/propensive/magnolia/issues/115 …) would help. Using foldleft-like HoF definitions instead of seq...

      0 replies 0 retweets 0 likes
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    9. Jonathan Winandy‏ @ahoy_jon 7 Aug 2018

      So i got back some perf back by defining the Typeclass as a sealed trait for this function and returning different sub Typeclasses for combine and dispatch.pic.twitter.com/ACe6AVdgrH

      1 reply 0 retweets 1 like
    10. Jon Pretty‏ @propensive 7 Aug 2018
      Replying to @ahoy_jon @fommil @fanf42

      I did some experiments with @fommil this evening, and we gained some more performance internally, too! Now looking faster than shapeless at runtime. I've just pushed a 0.9.1 release including these enhancements, if you want to try this, too!

      1 reply 1 retweet 6 likes
      Jon Pretty‏ @propensive 7 Aug 2018
      Replying to @propensive @ahoy_jon and

      Your approach looks quite interesting, though. I'm sure @fommil will want to try that. We should take a look tomorrow!

      6:46 PM - 7 Aug 2018
      0 replies 0 retweets 0 likes

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