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wycats's profile
Yehuda Katz 🥨
Yehuda Katz 🥨
Yehuda Katz  🥨
Verified account
@wycats

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Yehuda Katz  🥨Verified account

@wycats

Tilde Co-Founder, OSS enthusiast and world traveler.

Portland, OR
yehudakatz.com
Joined August 2007

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    1. Yehuda Katz  🥨‏Verified account @wycats 23 Oct 2017

      If you selected "We don't need mixins", is it because:

      5 replies 0 retweets 2 likes
      Show this thread
    2. Adam Rackis‏ @AdamRackis 23 Oct 2017
      Replying to @wycats

      Already possible - decorators accomplish this wonderfully.

      1 reply 0 retweets 1 like
    3. Yehuda Katz  🥨‏Verified account @wycats 23 Oct 2017
      Replying to @AdamRackis

      Should we have a stdlib decorator for mixins?

      2 replies 0 retweets 2 likes
    4. Kitson Kelly‏ @kitsonk 23 Oct 2017
      Replying to @wycats @AdamRackis

      If a stlib decorator, we need the information/conventions that denote the augmentation so can be handled in something like @typescriptlang

      1 reply 0 retweets 1 like
    5. Yehuda Katz  🥨‏Verified account @wycats 23 Oct 2017
      Replying to @kitsonk @AdamRackis @typescriptlang

      I was waiting until later to pull out the TS card ;)

      1 reply 0 retweets 4 likes
    6. Justin Fagnani‏ @justinfagnani 23 Oct 2017
      Replying to @wycats @kitsonk and

      Decorators don't have much to do w/ mixins. You can't super from your class into a mixin with a decorator (w/o mucking with the proto chain)

      1 reply 0 retweets 1 like
    7. Justin Fagnani‏ @justinfagnani 23 Oct 2017
      Replying to @justinfagnani @wycats and

      What's already possible is the class mixin pattern: let Mixin = (base) => class extends base { ... } class C extends Mixin(S) { ... }

      1 reply 0 retweets 0 likes
    8. Adam Rackis‏ @AdamRackis 23 Oct 2017
      Replying to @justinfagnani @wycats and

      Sure, but ergonomics of @mixin class Base { is much nicer. Also usually don't need to super from class into mixin - code smell imo

      2 replies 0 retweets 0 likes
    9. Justin Fagnani‏ @justinfagnani 23 Oct 2017
      Replying to @AdamRackis @wycats and

      super calls are a fundamental composition primitive, they're critical for mixins to support.

      1 reply 0 retweets 0 likes
    10. Adam Rackis‏ @AdamRackis 23 Oct 2017
      Replying to @justinfagnani @wycats and

      What if multiple mixins conflict? Won't I need to track mixin order and then do super.super.super.method()? Best to just avoid in toto imo

      1 reply 0 retweets 0 likes
      Yehuda Katz  🥨‏Verified account @wycats 23 Oct 2017
      Replying to @AdamRackis @justinfagnani and

      Sometimes you're building a single method out of pieces, where each piece handles some subset of the params. Super good for this.

      11:32 AM - 23 Oct 2017
      1 reply 0 retweets 0 likes
        1. New conversation
        2. Yehuda Katz  🥨‏Verified account @wycats 23 Oct 2017
          Replying to @wycats @AdamRackis and

          Like imagine implementing setAttribute and wanting mixins to handle each of the weird cases.

          1 reply 0 retweets 1 like
        3. Justin Fagnani‏ @justinfagnani 23 Oct 2017
          Replying to @wycats @AdamRackis and

          Intentional overrides, by definition, are not conflicts. Take away the ability to override, and you take away my ability to use them.

          1 reply 0 retweets 0 likes
        4. Kitson Kelly‏ @kitsonk 23 Oct 2017
          Replying to @justinfagnani @wycats and

          But a mixin solution without some sort of method resolution order, explicit or implicit is a problem. C3MRO is too magical IMO. Need better.

          1 reply 0 retweets 0 likes
        5. Yehuda Katz  🥨‏Verified account @wycats 23 Oct 2017
          Replying to @kitsonk @justinfagnani and

          Ruby linearizes mixins, eliminating the need for a per-method MRO.

          1 reply 0 retweets 2 likes
        6. Kitson Kelly‏ @kitsonk 23 Oct 2017
          Replying to @wycats @justinfagnani and

          👍 for an easy to reason Ruby-esque linearization... Is that solvable with a prototype based mixin in ES?

          1 reply 0 retweets 0 likes
        7. Justin Fagnani‏ @justinfagnani 23 Oct 2017
          Replying to @kitsonk @wycats and

          JS actually already has linearization with: class SubClass extends Mixin1(Mixin2(BaseClass)) {} syntax.

          0 replies 0 retweets 2 likes
        8. End of conversation

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