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
pcwalton's profile
Patrick Walton
Patrick Walton
Patrick Walton
@pcwalton

Tweets

Patrick Walton

@pcwalton

Research engineer at Mozilla

San Francisco, CA
pcwalton.github.io
Joined November 2009

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. corvus frugilegus‏ @glaebhoerl 16 Oct 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @thumphriees

      By the way is there any reason you couldn't attach laws to just like, a record of functions? Why are classes special?

      4 replies 0 retweets 4 likes
    2. Cyrus Omar‏ @neurocy 16 Oct 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @glaebhoerl @thumphriees

      You're on to something very fundamental about type classes ;-)

      1 reply 0 retweets 1 like
    3. corvus frugilegus‏ @glaebhoerl 17 Oct 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @neurocy @thumphriees

      What is it? (Not sure if I should be thinking in the direction of "they're actually not special" or "they're more special than I think!")

      2 replies 0 retweets 1 like
    4. Brendan Zabarauskas‏ @brendanzab 17 Oct 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @glaebhoerl @neurocy @thumphriees

      Type classes are just a fancy, built-in way of passing records of functions around implicitly. Alas, they live in a separate language space.

      1 reply 0 retweets 2 likes
    5. Brendan Zabarauskas‏ @brendanzab 17 Oct 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @brendanzab @glaebhoerl and

      I'm guessing you are already aware of this though 😉

      1 reply 0 retweets 2 likes
    6. corvus frugilegus‏ @glaebhoerl 17 Oct 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @brendanzab @neurocy @thumphriees

      Yeah; I'm kind of hoping @neurocy has something more profound or subtle in mind :)

      1 reply 0 retweets 3 likes
    7. Cyrus Omar‏ @neurocy 17 Oct 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @glaebhoerl @brendanzab @thumphriees

      I mean nothing too profound -- type classes tie "laws" to type-directed implicit arguments in a way that mystifies the two distinct concepts

      2 replies 0 retweets 4 likes
    8. Cyrus Omar‏ @neurocy 17 Oct 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @neurocy @glaebhoerl and

      in ML signatures specify an interface -- over both types and values -- and you can associate laws with the signature. much neater imo!

      2 replies 1 retweet 11 likes
    9. Graydon Hoare‏ @graydon_pub 17 Oct 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @neurocy @glaebhoerl and

      Tbh part of me regrets not having a sufficiently-strong set of counterarguments ready at the time, against the push for traits in Rust.

      2 replies 0 retweets 5 likes
    10. Brendan Zabarauskas‏ @brendanzab 17 Oct 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @graydon_pub @neurocy and

      Tbh I do prefer the 'programming with interface constraints' feeling I get using TCs. I would prefer traditional TCs over ML modules…

      3 replies 0 retweets 1 like
      Patrick Walton‏ @pcwalton 18 Oct 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @brendanzab @graydon_pub and

      My feeling is that (pardon the cliché) typeclasses are the worst of all module systems, except for all the others.

      10:21 AM - 18 Oct 2017
      • 6 Likes
      • Marcus Marijn Haverbeke eddyb, thriving in isolation, Uncarved Bitmap edef Graydon Hoare
      1 reply 0 retweets 6 likes
        1. New conversation
        2. Graydon Hoare‏ @graydon_pub 18 Oct 2017
          • Report Tweet
          • Report NetzDG Violation
          Replying to @pcwalton @brendanzab and

          Yeah I know. And in the grand scheme of things any response to Rust’s incredible success is a bit churlish of me. I just daydream sometimes.

          2 replies 0 retweets 4 likes
        3. Patrick Walton‏ @pcwalton 18 Oct 2017
          • Report Tweet
          • Report NetzDG Violation
          Replying to @graydon_pub @brendanzab and

          No need to apologize…typeclasses have lots of problems and it’s best to be up front about them

          0 replies 0 retweets 2 likes
        4. End of conversation

      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