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yoshuawuyts's profile
yosh
yosh
yosh
@yoshuawuyts

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yosh

@yoshuawuyts

Software researcher. he/they

Berlin, UTC+2
blog.yoshuawuyts.com
Joined May 2009

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    1. yosh‏ @yoshuawuyts 9 Dec 2017
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      Haha, yeah using TypedArrays to flat pack data structures is so much fun Instead of {a: 6, b: 7, prev: 2, next: 0} we could store it as a quad in a Uint16Array as [6,7,2,0]. Iterating over items is done in jumps of 4. Index at 1, and terminate at 0 and we have minimal GC! :D

      3 replies 0 retweets 5 likes
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    2. Greg Tatum‏ @TatumCreative 9 Dec 2017
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      Replying to @yoshuawuyts

      We do { a: [6], b: [7], prev: [2], next: [0] } in perf.html to optimize away GC. Adding an entry involves pushing to each array, but then you have a stable index into that table of data.

      1 reply 0 retweets 1 like
    3. Greg Tatum‏ @TatumCreative 9 Dec 2017
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      Replying to @TatumCreative @yoshuawuyts

      We are immutable by default so changing values involved throwing away lots of data, but GC is not a perf issue anymore.

      2 replies 0 retweets 1 like
    4. yosh‏ @yoshuawuyts 9 Dec 2017
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      Replying to @TatumCreative

      Ah yeah! — so I'm working on a diff algorithm, so going mutable all the way on this. Also when threading lands for WASM we might be able to share SharedArrayBuffers && then things might become _real fast_ hehe.

      1 reply 0 retweets 0 likes
    5. Greg Tatum‏ @TatumCreative 9 Dec 2017
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      Replying to @yoshuawuyts

      I struggle to find any use case for workers because of the cost and complexity of structure cloning, but the idea of having data structures packed into a SharedArrayBuffer is exciting.

      1 reply 0 retweets 1 like
    6. yosh‏ @yoshuawuyts 9 Dec 2017
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      Replying to @TatumCreative

      hehe, yeah using workers basically means turning your program into a distributed program — suddenly everying becomes a lot harder. Luckily distributed computing is a well-studied field, and there's established patterns. I think my fave for workers would be fan in/out :D

      2 replies 0 retweets 0 likes
      yosh‏ @yoshuawuyts 9 Dec 2017
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      Replying to @yoshuawuyts @TatumCreative

      oh oops, but yeah you probably already know all this haha — got carried away in a thought of how I _really_ want to experiment with Atomics & WebWorkers to create some basic signalling patterns haha. Anywayyyyy… yeah I agree SharedArrayBuffers are exciting! :D

      6:25 AM - 9 Dec 2017
      0 replies 0 retweets 0 likes

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