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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 7 Oct 2016

      Jon Pretty Retweeted Nick

      This is great for anyone trying to understand immutability with a brain that's been thinking mutably for too long. I've been there!https://twitter.com/nickstanch/status/784157146682429441 …

      Jon Pretty added,

      Nick @nickstanch
      Boom! Sleek #Scala data structure animations now available in reftree 0.6.0 (https://github.com/stanch/reftree ). Make your own! ;) pic.twitter.com/lJoZ9PReML
      1 reply 16 retweets 18 likes
    2. Ofer Ron‏ @oferron 7 Oct 2016
      Replying to @propensive

      sadly I've had too many instances of having to go to mutable data structures for performance reasons

      1 reply 0 retweets 0 likes
    3. Jon Pretty‏ @propensive 7 Oct 2016
      Replying to @oferron

      Is it significantly worse in your use case?

      1 reply 0 retweets 0 likes
    4. Ofer Ron‏ @oferron 7 Oct 2016
      Replying to @propensive

      order of magnitude. If I can find/write a faster immutable HashMap it might be usable, but the out of the box Scala impl, nah

      1 reply 0 retweets 0 likes
      Jon Pretty‏ @propensive 7 Oct 2016
      Replying to @oferron

      There's also some Option boxing going on in scala.collection.immutable.Map. IIRC I got a 4x improvement with a specialized rewrite.

      10:19 AM - 7 Oct 2016
      1 reply 0 retweets 0 likes
        1. New conversation
        1. Ofer Ron‏ @oferron 7 Oct 2016
          Replying to @propensive

          did you do the whole thing from scratch?

          1 reply 0 retweets 0 likes
        2. Jon Pretty‏ @propensive 7 Oct 2016
          Replying to @oferron

          No, it was wrapping a Java HashMap, IIRC. It was a few years ago now...

          1 reply 0 retweets 0 likes
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