Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.

This is the legacy version of twitter.com. We will be shutting it down on June 1, 2020. Please switch to a supported browser, or disable the extension which masks your browser. You can see a list of supported browsers in our Help Center.

  • Home Home Home, current page.
  • About

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?

    New to Twitter?
    Sign up
TimSweeneyEpic's profile
Tim Sweeney
Tim Sweeney
Tim Sweeney
@TimSweeneyEpic

Tweets

Tim Sweeney

@TimSweeneyEpic

Epic Games founder & CEO

epicgames.com
Joined August 2013

Tweets

  • © 2020 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Imprint
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list


    Under 100 characters, optional

    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1. Tim Sweeney‏ @TimSweeneyEpic Jan 4
      • Report Tweet
      • Report NetzDG Violation

      There are two interesting extremes of platform independent programming language design. One maps to hardware operations without surprising overhead, and another maximizes code correctness and verifiability by obeying all expected mathematical and set theoretic properties.

      13 replies 12 retweets 174 likes
      Show this thread
    2. Tim Sweeney‏ @TimSweeneyEpic Jan 4
      • Report Tweet
      • Report NetzDG Violation

      The first one is the C++ language. Disregard the byzantine standard libraries, syntax, and overload resolution rules, and it’s just a typed macro assembler.

      4 replies 3 retweets 53 likes
      Show this thread
    3. Tim Sweeney‏ @TimSweeneyEpic Jan 4
      • Report Tweet
      • Report NetzDG Violation

      The second one doesn’t really exist though CoQ and AGDA go in that direction. They support proofs-as-programs but aren’t quite real programming languages and have weird properties like rational numbers not being a subtype of integers.

      8 replies 1 retweet 41 likes
      Show this thread
    4. Tim Sweeney‏ @TimSweeneyEpic Jan 4
      • Report Tweet
      • Report NetzDG Violation

      Generally, I think the high level language could be layered onto the low level one through expanded libraries and constraints on unsafe operations, making a nice interoperable stack from top to bottom, with a unified and much more regular syntax than the status quo.

      15 replies 2 retweets 66 likes
      Show this thread
    5. Lambda Duck‏ @Anka213 Jan 5
      • Report Tweet
      • Report NetzDG Violation
      Replying to @TimSweeneyEpic

      So, how well do you think Rust fares here?

      1 reply 0 retweets 0 likes
    6. Tim Sweeney‏ @TimSweeneyEpic Jan 5
      • Report Tweet
      • Report NetzDG Violation
      Replying to @Anka213

      Rust is C++ minus powerful template abstraction features plus stronger safety guarantees through shifting proofs of liveness to the programmer. Kind of one step backward and one step forward, not any closer to ideal.

      1 reply 0 retweets 3 likes
    7. William Casarin‏ @jb55 Jan 5
      • Report Tweet
      • Report NetzDG Violation
      Replying to @TimSweeneyEpic @Anka213

      What do you mean by lack of template abstraction features? I would say with macros and typeclass-like traits you don't lose that much powrr? Unless we're talking variadic templates or something.

      1 reply 0 retweets 1 like
      Tim Sweeney‏ @TimSweeneyEpic Jan 5
      • Report Tweet
      • Report NetzDG Violation
      Replying to @jb55 @Anka213

      The compile-time evaluable subset of Rust is sub-Turing and doesn’t support expression evaluation. It’s more like Haskell type class constraints than metaprogramming.

      5:43 AM - 5 Jan 2020
      • 2 Likes
      • 𝒜𝓁𝑒𝓎𝓈𝒾𝒾𝒶 ˳✧༚ RICHLAND GAMES
      4 replies 0 retweets 2 likes
        1. New conversation
        2. Lambda Duck‏ @Anka213 Jan 6
          • Report Tweet
          • Report NetzDG Violation
          Replying to @TimSweeneyEpic

          Sub-turing doesn’t necessarily mean much. If you need to evaluate something that is not known to terminate at compile-time you are doing something pretty strange. Agda and Idris are both sub-turing.

          1 reply 0 retweets 0 likes
        3. Tim Sweeney‏ @TimSweeneyEpic Jan 6
          • Report Tweet
          • Report NetzDG Violation
          Replying to @Anka213

          Though sub-Turing, they do allow compile time computation of values to contribute to dependent types. Without that, common families of types require reinventing compile-time versions of things like integers, as in C++ pre constexpr.

          0 replies 0 retweets 1 like
        4. End of conversation
        1. New conversation
        2. Lambda Duck‏ @Anka213 Jan 22
          • Report Tweet
          • Report NetzDG Violation
          Replying to @TimSweeneyEpic @jb55

          Is there anything specific that you are missing? I’m so used to the Haskell typeclass system, so I don’t know what additional things will be more convenient with a full macro system (or whatever C++ templates are).

          1 reply 0 retweets 1 like
        3. Tim Sweeney‏ @TimSweeneyEpic Jan 22
          • Report Tweet
          • Report NetzDG Violation
          Replying to @Anka213 @jb55

          Haskell typeclasses seem like the right features for a high level language, but in something like Rust you really want the ability to treat the type system as a macro assembler for library-generated code. Hygenic macros are one approach, C++ templates and constexpr are another.

          1 reply 0 retweets 2 likes
        4. 1 more reply
        1. Arne Schober‏ @Khipu_Kamayuq Jan 5
          • Report Tweet
          • Report NetzDG Violation
          Replying to @TimSweeneyEpic @jb55 @Anka213

          Rust added some of this recently:https://github.com/rust-lang/rfcs/blob/master/text/2000-const-generics.md …

          0 replies 0 retweets 0 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo
        1. New conversation
        2. William Casarin‏ @jb55 Jan 5
          • Report Tweet
          • Report NetzDG Violation
          Replying to @TimSweeneyEpic @Anka213

          true, I'm looking forward to Jai in that regard

          1 reply 0 retweets 0 likes
        3. deech‏ @deech Jan 5
          • Report Tweet
          • Report NetzDG Violation
          Replying to @jb55 @TimSweeneyEpic @Anka213

          Nim and D have had this for years.

          1 reply 0 retweets 0 likes
        4. 3 more replies

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2020 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Imprint
        • Cookies
        • Ads info