Vitalii Akimov

@vitalii_akimov

Trying to simplify JavaScript programming using EffectfulJS

Kharkiv, Ukraine
effectful.js.org
Vrijeme pridruživanja: veljača 2018.
12 fotografija ili videozapisa Fotografije i videozapisi

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  1. Prikvačeni tweet
    11. lip 2019.

    Going back in time to change the present. A new debugger with time traveling will be available soon for any application on any platform. Here is a example.

    6 proslijeđenih tweetova 26 korisnika označava da im se sviđa
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  2. 27. sij

    I wish cloud providers/tools also utilize for their configs like 2 does, this would significantly reduce their size and improve readability

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  3. 5. sij

    Oleg’s comment(from 2007) about first class delimited continuations now is transformed into algebraic effects are better than monads

    Odgovor korisnicima @vitalii_akimov @Iceland_jack
    Oleg Kiselyov (2007) - “One may wonder if functional programming still matters” -
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  4. proslijedio/la je Tweet
    15. pro 2019.

    Liberatii has been recently featured in Southampton Science Park magazine as part of their catalyst program.

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  5. 18. stu 2019.

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  6. 18. stu 2019.

    the essence of Concurrent Mode is providing access to renderer continuations, all the new functions it provides can be defined as one-liners using only shift/reset

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  7. 18. stu 2019.

    this means if we have monadic/applicative syntax we don’t need components, hooks, suspense, context, concurent mode and even VDOM can be avoided

    Someone asked me what a React component was today, here's my answer: it's like a Hook except you can use them conditionally.
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  8. proslijedio/la je Tweet
    17. stu 2019.

    First optimization was easy, but very effective: Use mutable vectors, not immutable ones:

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  9. 30. lis 2019.

    this is art

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  10. 29. lis 2019.

    in FP at least since 2002 - the first paper I know

    2016: uses side effects during reads to automatically re-render on changes. Impure! Blasphemy! Untestable! 2019: suspense uses side effects during reads to automatically re-render on changes! This is the best thing since sliced bread!
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  11. 25. lis 2019.

    I forgot how painful it was to use only callbacks for async code - working on unit tests for the debugger now, the runtime is monkey-patched, so no way to use promises

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  12. 24. lis 2019.

    I suppose this means Prepack has failed, this is sad, I need such tool for my dream toolset

    Thanks to for the year he spent working on compiling React components with Prepack. This set of tradeoffs hasn’t worked out, but the lessons we learned about compilation partially led to the design of Hooks — which themselves solve complex problems for Concurrent Mode.
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  13. 23. lis 2019.

    effectfuljs is like flapjax compiler but with abstract APIs

    Woo, wonderful thing to come to after an intense day of :) new devs & tools designers: imagine -- virtual dom, managed reactivity, & functional streams were weird concepts for webdev 10 years ago. ideas can get adopted industry-wide *fast*!
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  14. proslijedio/la je Tweet
    14. lis 2019.

    Effect handlers, monadic reflection, and delimited control are three different abstractions for effects. Forster et al. give a meta-theoretic study of their relative expressivity in a recent JFP article: (cc & )

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  15. 4. lis 2019.

    this is nice, another way to mix Monadic-do(generators) and Applicative-do(React Hooks), this is still not commutative though, needs a transpiler to achieve the full power of the abstract concepts

    with hooks and generators asynchrony is simpler and declarative ... it is a new atomico hook, it allows pausing the consumption of the generator when a new instance of it is created
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  16. proslijedio/la je Tweet
    26. tra 2019.

    Liberatii team at Microsoft ignite | the tour in Stockholm (24-25 April).

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  17. proslijedio/la je Tweet
    13. ruj 2019.
    Odgovor korisniku/ci

    EffectfulJS doesn't change Promise runtime to keep the impact minimal, but such implementing such propagation is just a matter of `finally` clause (this can be monkey-patched into runtime):

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  18. 3. ruj 2019.

    Effectful.JS has already both operators overloading and continuations, and it is simple to build a partial evaluator using Normalization by Evaluation as a library.

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  19. 3. ruj 2019.

    This also duplicates common residual sub-expressions, and it cannot handle residual branching. These (along with many other things) require access to continuations (not available in JS though).

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  20. 3. ruj 2019.

    The demo works only for a small subset of JS (no side effects, plain objects and functions only, etc). To support the whole JS we need operators overloading (we have overloaded function's calls and properties access(Proxies), but not, say, arithmetic expressions). And...

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  21. 3. ruj 2019.

    This doesn't require the original function's source code, the program just runs on the current JS engine as is. But it produces residual sources text instead of its resulting value if it depends on yet unknown (abstract) values.

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