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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. Jay Phelps‏ @_jayphelps 26 Aug 2017
      Replying to @TheLarkInn @addyosmani and

      Lock us all in a room and don't let us out until the DOM has VDOM

      1 reply 1 retweet 48 likes
    2. Jason Miller  🦊 ⚛‏ @_developit 26 Aug 2017
      Replying to @_jayphelps @TheLarkInn and

      Come on boffins!https://youtu.be/5A8CDJaQCqo 

      1 reply 0 retweets 14 likes
    3. Justin Fagnani‏ @justinfagnani 26 Aug 2017
      Replying to @_developit @_jayphelps and

      I don't think VDOM as it's most commonly implemented is a very good model to add. It doesn't make a distinction between static and dynamic.

      4 replies 0 retweets 12 likes
    4. Yehuda Katz  🥨‏Verified account @wycats 26 Aug 2017
      Replying to @justinfagnani @_developit and

      Can confirm. This makes it a nonstarter for Glimmer too. VDOM is an implementation detail not a programming model.

      1 reply 0 retweets 9 likes
    5. Sean Thomas Larkin (肖恩)‏ @TheLarkInn 26 Aug 2017
      Replying to @wycats @justinfagnani and

      Could the diffing primitive could be used in bytecode vm that glimmer uses?

      1 reply 0 retweets 0 likes
    6. Dan Abramov‏ @dan_abramov 26 Aug 2017
      Replying to @TheLarkInn @wycats and

      The reason bytecode is useful is because it is more specific than diffing. If you have to diff anyway you’ve lost benefits of bytecode.

      1 reply 0 retweets 9 likes
    7. Yehuda Katz  🥨‏Verified account @wycats 26 Aug 2017
      Replying to @dan_abramov @TheLarkInn and

      Right. We have an update program we run that avoids the need to ever diff except at the string level (attribute value, text node)

      1 reply 0 retweets 6 likes
    8. Dominic Gannaway‏ @trueadm 26 Aug 2017
      Replying to @wycats @dan_abramov and

      That's what I've been experimenting on too in regards to React. Admittedly it's way harder to do with React, as we have to evaluate raw JS.

      1 reply 0 retweets 2 likes
    9. Yehuda Katz  🥨‏Verified account @wycats 26 Aug 2017
      Replying to @trueadm @dan_abramov and

      It's worth exploring in react but much harder to get right because it's hard to enforce restrictions in "just js"

      2 replies 0 retweets 3 likes
    10. Justin Fagnani‏ @justinfagnani 26 Aug 2017
      Replying to @wycats @trueadm and

      Not really... template literals just do that for you

      1 reply 0 retweets 0 likes
      Yehuda Katz  🥨‏Verified account @wycats 26 Aug 2017
      Replying to @justinfagnani @trueadm and

      JSX is not the same thing as template literals. And stitching together JS loops / conditionals with templates also doesn't work.

      5:36 PM - 26 Aug 2017
      • 2 Likes
      • Addy Osmani Adam Rackis
      3 replies 0 retweets 2 likes
        1. New conversation
        2. Sean Thomas Larkin (肖恩)‏ @TheLarkInn 26 Aug 2017
          Replying to @wycats @justinfagnani and

          It does with statically analyzable tokens and expressions passed to them (aka Vue/angular directives)

          1 reply 0 retweets 0 likes
        3. Yehuda Katz  🥨‏Verified account @wycats 26 Aug 2017
          Replying to @TheLarkInn @justinfagnani and

          Yes, if you eliminate the "just JS" part and add conditionals and loops to the template language, it works.

          2 replies 0 retweets 0 likes
        4. Sean Thomas Larkin (肖恩)‏ @TheLarkInn 26 Aug 2017
          Replying to @wycats @justinfagnani and

          I also think jsx has some very powerful composition tech. So using both interchangably is very very nice. (Like pure/func to assign props)

          1 reply 0 retweets 1 like
        5. Yehuda Katz  🥨‏Verified account @wycats 26 Aug 2017
          Replying to @TheLarkInn @justinfagnani and

          The powerful composition comes from functions. Which a good template language can have.

          2 replies 0 retweets 2 likes
        6. Sean Thomas Larkin (肖恩)‏ @TheLarkInn 26 Aug 2017
          Replying to @wycats @justinfagnani and

          Mehhh Template v Template language

          1 reply 0 retweets 2 likes
        7. Yehuda Katz  🥨‏Verified account @wycats 26 Aug 2017
          Replying to @TheLarkInn @justinfagnani and

          I don't get it.

          2 replies 0 retweets 0 likes
        8. Sean Thomas Larkin (肖恩)‏ @TheLarkInn 26 Aug 2017
          Replying to @wycats @justinfagnani and

          Twig/Underscore: Templating Language Template (in my mind): something that could be still successfully parsed with a HTML parser

          2 replies 0 retweets 0 likes
        9. Sean Thomas Larkin (肖恩)‏ @TheLarkInn 26 Aug 2017
          Replying to @TheLarkInn @wycats and

          Aka no extraneous syntax etc

          1 reply 0 retweets 0 likes
        10. 14 more replies
        1. New conversation
        2. Yehuda Katz  🥨‏Verified account @wycats 26 Aug 2017
          Replying to @wycats @justinfagnani and

          let items = http://list.map (item => jsx`<li>${item}</li>`); return jsx`<ul>${items}</ul>`

          1 reply 0 retweets 1 like
        3. Yehuda Katz  🥨‏Verified account @wycats 26 Aug 2017
          Replying to @wycats @justinfagnani and

          This is the sort of very simple thing people do all the time and like as "just JS" that starts to make it hard to do this optimization.

          2 replies 0 retweets 1 like
        4. Justin Fagnani‏ @justinfagnani 26 Aug 2017
          Replying to @wycats @trueadm and

          That works great in lit-html, what's the difficulty?

          1 reply 0 retweets 0 likes
        5. Yehuda Katz  🥨‏Verified account @wycats 26 Aug 2017
          Replying to @justinfagnani @trueadm and

          It means you can't statically see the conditional and have to compare more.

          1 reply 0 retweets 1 like
        6. Yehuda Katz  🥨‏Verified account @wycats 26 Aug 2017
          Replying to @wycats @justinfagnani and

          The full optimization does no comparing at update time of anything, and also doesn't keep any repr at all of the anything other than {{}}

          1 reply 0 retweets 1 like
        7. Justin Fagnani‏ @justinfagnani 26 Aug 2017
          Replying to @wycats @trueadm and

          I'm not exactly sure what comparing you're referring to, but if there a conditional in the template you have to execute it.

          2 replies 0 retweets 1 like
        8. Yehuda Katz  🥨‏Verified account @wycats 26 Aug 2017
          Replying to @justinfagnani @trueadm and

          You execute it once when appending and only check if the condition is still valid thereafter.

          1 reply 0 retweets 0 likes
        9. Justin Fagnani‏ @justinfagnani 26 Aug 2017
          Replying to @wycats @trueadm and

          Yep, that's what lit-html does

          0 replies 0 retweets 1 like
        10. End of conversation
        1. New conversation
        2. Andrea Giammarchi‏ @WebReflection 27 Aug 2017
          Replying to @wycats @justinfagnani and

          all solved in hyperHTML and intents you can define to bring anything you want to the dynamic parts of the template you define. 🎉

          1 reply 0 retweets 4 likes
        3. Dominic Gannaway‏ @trueadm 27 Aug 2017
          Replying to @WebReflection @wycats and

          I looked into hyperHTML and it doesn't seem to make it any easier to compile to bytecode. Can you explain what is special?

          2 replies 0 retweets 0 likes
        4. Dominic Gannaway‏ @trueadm 27 Aug 2017
          Replying to @trueadm @WebReflection and

          For example: return render`<p>${http://foo.map (mapper)}</p>` Without types, there's no way of knowing what type of object foo is

          1 reply 0 retweets 0 likes
        5. Dominic Gannaway‏ @trueadm 27 Aug 2017
          Replying to @trueadm @WebReflection and

          It could be an array, or it could be any other object, it could even have proxies on it. I don't understand how hyperHTML solves these probs

          1 reply 0 retweets 0 likes
        6. Andrea Giammarchi‏ @WebReflection 27 Aug 2017
          Replying to @trueadm @wycats and

          https://youtube.com/watch?v=Qtb11P1FWnc … 😃

          0 replies 0 retweets 0 likes
        7. End of conversation

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