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.

    Patrick Walton‏ @pcwalton 21 Nov 2019
    • Report Tweet
    • Report NetzDG Violation

    If people had an appreciation for just how much havoc the lexer hack causes in C and C++, there wouldn't be anywhere near the amount of complaining about modern languages that put types after identifiers (var x: int) instead of the reverse (int x).

    1:44 PM - 21 Nov 2019
    • 19 Retweets
    • 171 Likes
    • MANAOUIL Karim Josh Pschorr James Wilcox Westerbly Snaydley Tanzilur Rahman aanbarasan Jason Cai Morten Vassvik Fabio Fracassi
    13 replies 19 retweets 171 likes
      1. New conversation
      2. Michael Sullivan‏ @msully4321 21 Nov 2019
        • Report Tweet
        • Report NetzDG Violation
        Replying to @pcwalton

        I think that most users don't base their decisions on language aesthetics based on what makes compiler authors lives easiest!

        1 reply 0 retweets 3 likes
      3. Patrick Walton‏ @pcwalton 21 Nov 2019
        • Report Tweet
        • Report NetzDG Violation
        Replying to @msully4321

        It’s not just compiler authors, though: I’m referring to things like having to write typename, or https://en.wikipedia.org/wiki/Most_vexing_parse …

        1 reply 2 retweets 20 likes
      4. 1 more reply
      1. New conversation
      2. Sean Barrett‏ @nothings 22 Nov 2019
        • Report Tweet
        • Report NetzDG Violation
        Replying to @pcwalton

        Wait, what havoc does the C lexer hack cause? I've never found it a big deal in a proper compiler, and in tools I've always been able to get away with pseudo-parsing C without tracking typenames. (I'm sure it's different in C++, and I'm also 100% behind 'x:int' regardless.)

        1 reply 0 retweets 1 like
      3. James Widman‏ @JamesWidman 22 Nov 2019
        • Report Tweet
        • Report NetzDG Violation
        Replying to @nothings @pcwalton

        parentheses around the declarator in the declaration of a function parameter

        1 reply 0 retweets 0 likes
      4. 13 more replies
      1. New conversation
      2. Michael‏ @michael90187356 21 Nov 2019
        • Report Tweet
        • Report NetzDG Violation
        Replying to @pcwalton

        Makes me feel sad about the AS3 EcmaScript 4 proposal being derailed. I programmed in AS3 and liked the dynamic then later static refinement paradigm. I like dynamic languages, but a safe language will be type safe. That particular model didn’t preclude strict dialects.

        1 reply 0 retweets 3 likes
      3. BrendanEich‏Verified account @BrendanEich 21 Nov 2019
        • Report Tweet
        • Report NetzDG Violation
        Replying to @michael90187356 @pcwalton

        I put years into ES4. Much of it made it into ES6 (ES2015), but gradual typing is a hard nut to crack. Still some hope, but no champion in TC39. MS wants to keep TS out of the standard for now, and I do not fault them for this. FB Flow, same story AIUI. New blood is needed.

        6 replies 5 retweets 36 likes
      4. 18 more replies
      1. Joe Groff‏ @jckarter 21 Nov 2019
        • Report Tweet
        • Report NetzDG Violation
        Replying to @pcwalton

        How about both: auto x -> int

        0 replies 0 retweets 14 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. New conversation
      2. Alex‏ @wrd83 21 Nov 2019
        • Report Tweet
        • Report NetzDG Violation
        Replying to @pcwalton

        Care to explain in more depth on why?

        1 reply 0 retweets 2 likes
      3. Felipe O. Carvalho‏ @_Felipe 21 Nov 2019
        • Report Tweet
        • Report NetzDG Violation
        Replying to @wrd83 @pcwalton

        Either the lexer or the parser needs to keep a table of what's a type in order to build the AST. https://en.m.wikipedia.org/wiki/The_lexer_hack …

        1 reply 1 retweet 8 likes
      4. 3 more replies
      1. New conversation
      2. Reed Seal-Foss‏ @ReedSealFoss 21 Nov 2019
        • Report Tweet
        • Report NetzDG Violation
        Replying to @pcwalton

        I don't mind the type coming after the identifier. I do mind leaving it up to the compiler to decide what that type is for me, or that even being an option. Not my cup of tea.

        2 replies 0 retweets 2 likes
      3. Jarred Nicholls‏ @jarrednicholls 22 Nov 2019
        • Report Tweet
        • Report NetzDG Violation
        Replying to @ReedSealFoss @pcwalton

        Thankfully type inference is not that at all.

        1 reply 0 retweets 2 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