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TimSweeneyEpic's profile
Tim Sweeney
Tim Sweeney
Tim Sweeney
@TimSweeneyEpic

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Tim Sweeney

@TimSweeneyEpic

Epic Games founder & CEO

epicgames.com
Joined August 2013

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    Tim Sweeney‏ @TimSweeneyEpic 28 May 2017
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    Mathematics f∈(ℤ→ℤ)→(ℤ→ℤ) Haskell f::(Int->Int)->(Int->Int) C++ (int(*)(int)(*f))(int(*)(int)) Notation matters!

    2:33 PM - 28 May 2017
    • 250 Retweets
    • 545 Likes
    • andrew Matt Clarke Perry Lorier Oil Shell Blog Benedict Fritz Tyler Diaz Pietro De Nicolao Austin fat-tailed & unbalancedparentheses
    16 replies 250 retweets 545 likes
      1. New conversation
      2. fluchtpunkt‏ @fluchtpunkt 25 Aug 2018
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        Replying to @TimSweeneyEpic @garybernhardt

        in @typescriptlang : const f = function (x: (number) => number): (number) => number {…} (I know it's not a type declaration – anyone knows how to do that without a helper variable?)

        1 reply 0 retweets 0 likes
      3. Tim Sweeney‏ @TimSweeneyEpic 25 Aug 2018
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        Replying to @fluchtpunkt @garybernhardt @typescriptlang

        Mathematicians use two forms that are really clear. In ASCII they translate to: f:int->int f(x:int):int Both are left-to-right so they match uses of f(x), which becomes important for readability of nested types.

        0 replies 0 retweets 0 likes
      4. End of conversation
      1. New conversation
      2. Benjamin Jordan‏ @thegoldenmule 28 May 2017
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        Replying to @TimSweeneyEpic

        If only Int was actually equivalent to the set of all natural numbers.

        2 replies 1 retweet 18 likes
      3. Chobbes‏ @Chobbez 28 May 2017
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        Replying to @thegoldenmule @TimSweeneyEpic

        I imagine Integer didn't fit! I wish there were naturals in prelude, though (1 and up).

        1 reply 0 retweets 0 likes
      4. 2 more replies
      1. Tom Sandford‏ @TheSnee 28 May 2017
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        Replying to @TimSweeneyEpic

        Techno Untz -> Untz -> Untz -> Untz

        0 replies 0 retweets 24 likes
        Thanks. Twitter will use this to make your timeline better. Undo
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      1. New conversation
      2. (Ataide (Vinicius))‏ @viniciusataid 28 May 2017
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        Replying to @TimSweeneyEpic

        Mathematics and Haskell look same with different symbols. C is like ...pic.twitter.com/8xeAsqNwdk

        1 reply 0 retweets 24 likes
      3. Noah Gibbs‏ @codefolio 25 Aug 2018
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        Replying to @viniciusataid @TimSweeneyEpic

        C is genuinely expressing something different there, in the sense that *all* C function can have side effects, and almost always do. It's a lousy notation for "function from int func to int func" though.

        0 replies 0 retweets 1 like
      4. End of conversation
      1. New conversation
      2. Geo‏ @nvizstudio 28 May 2017
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        Replying to @TimSweeneyEpic

        Perhaps a future programming language could directly use modern math notation. Would require a new input system, perhaps.

        3 replies 0 retweets 0 likes
      3. Jaden Geller  🧚‏ @JadenGeller 28 May 2017
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        Replying to @nvizstudio @TimSweeneyEpic

        Check out Agda.

        2 replies 0 retweets 11 likes
      4. 2 more replies
      1. New conversation
      2. [𝚘𝚋𝚓𝚎𝚌𝚝 𝙾𝚋𝚓𝚎𝚌𝚝]‏ @lucaswiman 28 May 2017
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        Replying to @TimSweeneyEpic @carnivorous8008

        FWIW, I think f:(ℤ^ℤ)→(ℤ^ℤ) (where ^ means superscript) would be a more common notatation.

        2 replies 0 retweets 1 like
      3. Chobbes‏ @Chobbez 28 May 2017
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        Replying to @lucaswiman @TimSweeneyEpic @carnivorous8008

        Whoa, really? I've never seen that before! What's the superscript rational?

        1 reply 0 retweets 0 likes
      4. 4 more replies

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