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Ngnghm's profile
💻🐴Ngnghm
💻🐴Ngnghm
 💻 🐴Ngnghm
@Ngnghm

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 💻 🐴Ngnghm

@Ngnghm

Welcome to the Swiftian World of Houyhnhnm Computing ("Hunam"). I am @fare's software alter ego (but see @phanaero for cryptofoo). Call me "Ann". 🐎Read my blog!

Lair of the French Resistance
ngnghm.github.io
Joined August 2015

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     💻 🐴Ngnghm‏ @Ngnghm May 19
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    The smallest type change make entire APIs incompatible, hence a lot of pain in OCaml: forced upgrades, forced downgrades, crazy version update schedules, extra forks, reluctance to fix bad early choices that would break compatibility, etc. Types DIRECTLY cause library badness.

    11:14 PM - 19 May 2020
    • 10 Retweets
    • 40 Likes
    • Vsevolod Xiangyu He Tom van der Sommen Sebastian Peeyush Kushwaha Jonathan Leonard (h i) Arthur Lemmens keyan 🍏
    3 replies 10 retweets 40 likes
      1. New conversation
      2.  💻 🐴Ngnghm‏ @Ngnghm May 19
        • Report Tweet
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        Worse: the opacity of modules and parametricity mean that you can't use reflection to hot patch a module until it's been fixed upstream. You have to go through a whole lot extra pain, including local or global forks and/or cajoling maintainers, to get a real fix in.

        2 replies 0 retweets 4 likes
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      3.  💻 🐴Ngnghm‏ @Ngnghm May 19
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        And you can't use introspection to access unpublished interfaces while you lobby the author to publish them or offer primitives you need even though he "doesn't see why" it matters. You could use copy/paste + obj.magic, but it's even less safe or maintainable than introspection.

        3 replies 0 retweets 7 likes
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      4.  💻 🐴Ngnghm‏ @Ngnghm May 20
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        Overall, type rigidity, that allows the compiler to detect more issues earlier with clearer error messages, thus bringing a lot of goodness in the small, also brings a huge cascade of badness in the large, that a lot of myopes don't see and claim doesn't exist.

        2 replies 2 retweets 12 likes
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      5.  💻 🐴Ngnghm‏ @Ngnghm May 20
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        The more ridiculous are those who can't not see all the badness of their "ecosystem", yet refuse to acknowledge the relationship between this badness and design decisions in their language. In the typed FP world, at least Haskell or Scala have coping mechanisms, unlike OCaml.

        0 replies 0 retweets 3 likes
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      6. End of conversation
      1. New conversation
      2. Raphael Reitzig‏ @OmegaPolice May 20
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        Replying to @Ngnghm

        Sure, breaking APIs silently is a lot better. Cause we all know that stack traces are so much more fun than compiler errors.

        1 reply 0 retweets 5 likes
      3.  💻 🐴Ngnghm‏ @Ngnghm May 20
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        Replying to @OmegaPolice

        How about not breaking APIs? Supporting two types without a sum with named constructors? Adding an optional field or option way down the type hierarchy without breaking everything? Issuing runtime errors in rare cases that are not supported anymore? Supporting code evolution…

        2 replies 0 retweets 3 likes
      4. 16 more replies
      1. New conversation
      2. David Barbour‏ @awelonblue May 20
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        Replying to @Ngnghm

        Whether an API is robust or fragile is mostly independent of whether or not types are used. The same API, without type safety, would still break when the same small type change. Types have two effects: they make it more obvious that things break, and they influence API design.

        2 replies 0 retweets 3 likes
      3. David Barbour‏ @awelonblue May 20
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        Replying to @awelonblue @Ngnghm

        If a programming language has a tendency to encourage fragile code, that's a legit complaint whether or not a type system is involved.

        1 reply 0 retweets 2 likes
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