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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 6 Apr 2020

      Jon Pretty Retweeted Jacob Wang

      I'm so happy with this PR! Happy about a further 30% performance improvement to compile times, happy that more and more people are using Magnolia, and happy to welcome @jatcwang as a contributor!https://twitter.com/jatcwang/status/1247075350833582082 …

      Jon Pretty added,

      Jacob Wang @jatcwang
      Magnolia PR to support derivation of read-only typeclasses (good when case class constructors are private)! Comes with an accidental compile time improvement of 30%. https://github.com/propensive/magnolia/pull/224 … Feedback welcome!
      1 reply 1 retweet 25 likes
    2. FloWi‏ @FloWi 6 Apr 2020
      Replying to @propensive @jatcwang

      Nice - I wonder how much improvements he can do with intentional optimization when the 30% were just accidental :)

      1 reply 0 retweets 1 like
    3. Jon Pretty‏ @propensive 6 Apr 2020
      Replying to @FloWi @jatcwang

      There's probably a little, but not too much more to be gained... I did most of that work a couple of years ago. The 30% here was gained only for a (majority) subset of derivations.

      1 reply 0 retweets 1 like
    4. FloWi‏ @FloWi 6 Apr 2020
      Replying to @propensive @jatcwang

      I'm always happy about performance optimizations. Guess I've worked too long in scrum driven companies where people always prefer features over "premature optimization" or call it "yagni".

      1 reply 0 retweets 2 likes
    5. Jon Pretty‏ @propensive 6 Apr 2020
      Replying to @FloWi @jatcwang

      It can be quite addictive trying to find them, too. I don't do it often...

      1 reply 0 retweets 0 likes
    6. FloWi‏ @FloWi 6 Apr 2020
      Replying to @propensive @jatcwang

      That's true. But imho it's worth trying just a bit (maybe timeboxed to use nomenclature that makes scrum evangelists happy). If not you might end up with apps like slack that are so unoptimized they drain your battery in no time.

      1 reply 0 retweets 1 like
      Jon Pretty‏ @propensive 6 Apr 2020
      Replying to @FloWi @jatcwang

      Yes, I agree. There's the adage "don't optimise prematurely" but so many projects look like they've interpreted that as "don't optimise, period". Many optimisations are cheap, and are worth applying "just in time", which isn't premature at all. +1 to the Principle of Least Power!

      10:47 AM - 6 Apr 2020 from Krakow, Poland
      • 1 Like
      • FloWi
      0 replies 0 retweets 1 like

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