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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 12 Jun 2017

      I wrote a better* generic derivation macro for Scala because I needed one and @milessabin said it was impossible! 😉 http://magnolia.work 

      4 replies 20 retweets 59 likes
    2. Miles Sabin‏ @milessabin 12 Jun 2017
      Replying to @propensive

      What did I say was impossible?

      2 replies 0 retweets 0 likes
    3. Jon Pretty‏ @propensive 12 Jun 2017
      Replying to @milessabin

      Deriving implicits recursively without the need for `Lazy`, or similar...

      1 reply 0 retweets 1 like
    4. Miles Sabin‏ @milessabin 12 Jun 2017
      Replying to @propensive

      Oh, I see. There is an "or similar" in your code ;-) FWIW what you have looks similar to @larsr_h's original TypeClass type class.

      2 replies 0 retweets 0 likes
    5. Jon Pretty‏ @propensive 12 Jun 2017
      Replying to @milessabin @larsr_h

      Oh, but the "or similar" (!) is only in my code, not users' code (in the form of Lazy)… I'll revisit @larsr_h's Typeclass² for inspiration!

      2 replies 0 retweets 0 likes
    6. Miles Sabin‏ @milessabin 12 Jun 2017
      Replying to @propensive @larsr_h

      Shapeless's Lazy lets users control how recursive knots are tied. TypeClass and your lib can only tie the knot in a limited number of ways.

      2 replies 0 retweets 1 like
      Jon Pretty‏ @propensive 12 Jun 2017
      Replying to @milessabin @larsr_h

      I'm not suggesting they don't exist, but can you point me to a difficult one that I won't be able to tie up?

      6:44 AM - 12 Jun 2017
      1 reply 0 retweets 0 likes
        1. Miles Sabin‏ @milessabin 12 Jun 2017
          Replying to @propensive @larsr_h

          Take a look at the scrap your boilerplate type classes in shapeless (Data and DataT).

          0 replies 0 retweets 3 likes
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