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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. raichoo‏ @raichoo 6 Aug 2015

      323 occurrences of "asInstanceOf" in #scala #slick. Casting like a BOSS, because FUCK TYPES! *slow clap*

      4 replies 5 retweets 13 likes
    2. Jon Pretty‏ @propensive 6 Aug 2015
      Replying to @raichoo

      @raichoo Slick casts... so you don't have to?

      1 reply 0 retweets 1 like
    3. Jon Pretty‏ @propensive 6 Aug 2015
      Replying to @propensive

      @raichoo To elaborate on that, counting asInstanceOfs in a library is a bad metric. Shapeless has 74 of them, for example. /cc @milessabin

      2 replies 0 retweets 0 likes
    4. Miles Sabin‏ @milessabin 6 Aug 2015
      Replying to @propensive

      @propensive Yeah, the ones that aren't are in the implementation of Typeable and tagged types (ie. newtype). /cc @raichoo

      1 reply 0 retweets 0 likes
    5. Miles Sabin‏ @milessabin 6 Aug 2015
      Replying to @milessabin

      @propensive So I think it is a pretty good metric. If unsafe constructs are used they need to be justified. /cc @raichoo

      2 replies 0 retweets 2 likes
    6. Jon Pretty‏ @propensive 6 Aug 2015
      Replying to @milessabin

      @milessabin @raichoo I think it unfairly overlooks that Slick has to deal with other lesser-typed (Java) APIs.

      1 reply 0 retweets 0 likes
    7. Miles Sabin‏ @milessabin 6 Aug 2015
      Replying to @propensive

      @propensive that doesn't seem to be a problem for doobie. /cc @raichoo

      3 replies 0 retweets 0 likes
      Jon Pretty‏ @propensive 6 Aug 2015
      Replying to @milessabin

      @milessabin @raichoo Though I don't like the idea of effectively criticising asInstanceOfs in a library if it saves them in user code.

      3:34 AM - 6 Aug 2015
      0 replies 0 retweets 0 likes

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