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

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Patrick Walton

@pcwalton

Research engineer at Mozilla

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

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    1. Graydon Hoare‏ @graydon_pub 24 Feb 2018
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      Replying to @brendanzab @pasiphae_goals and

      I feel like we did ok shipping only about 5 years late, and on our 3rd runtime and 4th type system. The key was always to save people trapped in C++-world, not be a research testbed. Dependent types can wait for the next language :P

      2 replies 1 retweet 20 likes
    2. Graydon Hoare‏ @graydon_pub 24 Feb 2018
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      Replying to @graydon_pub @brendanzab and

      (This is my persistent nag that nobody wants to hear: that I kinda wish people would stop adding new stuff in, or at least approach an asymptote; it's plenty complex as it is, and there's always the risk of losing the thread of the thing.)

      6 replies 1 retweet 16 likes
    3. Anthony Ramine‏ @nokusu 24 Feb 2018
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      Replying to @graydon_pub @brendanzab and

      The various planned breaking changes to the language in the name of ergonomics are damn scary.

      1 reply 0 retweets 0 likes
    4. Brendan Zabarauskas‏ @brendanzab 24 Feb 2018
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      Replying to @nokusu @graydon_pub and

      Like what?

      1 reply 0 retweets 0 likes
    5. Anthony Ramine‏ @nokusu 24 Feb 2018
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      Replying to @brendanzab @graydon_pub and

      Module changes, `mut` being implicit in some circumstances, argument-bound lifetimes, the `T throws E` proposal (not planned yet though, fortunately), etc…

      1 reply 0 retweets 0 likes
    6. Patrick Walton‏ @pcwalton 24 Feb 2018
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      Replying to @nokusu @brendanzab and

      Most of these are simplifications though, honestly.

      1 reply 0 retweets 1 like
    7. Anthony Ramine‏ @nokusu 24 Feb 2018
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      Replying to @pcwalton @brendanzab and

      I strongly disagree to that, most of those changes are optimising code for writing and vague notions of "happiness" or whatever, and they will ultimately hinder code reviewing because you'll need to keep more stuff in mind to follow the code. Cf.https://github.com/rust-lang/rust/issues/42640#issuecomment-368161767 …

      1 reply 0 retweets 0 likes
    8. Patrick Walton‏ @pcwalton 24 Feb 2018
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      Replying to @nokusu @brendanzab and

      I don’t share the concern. I remember lots of similar concerns around things that were totally uncontroversial now; e.g. “none.” vs. “None”

      1 reply 0 retweets 0 likes
    9. Patrick Walton‏ @pcwalton 24 Feb 2018
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      Replying to @pcwalton @nokusu and

      Or capture clauses. This is actually a very similar situation to capture clauses, and it ended up not mattering at all.

      1 reply 0 retweets 0 likes
    10. Anthony Ramine‏ @nokusu 24 Feb 2018
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      Replying to @pcwalton @brendanzab and

      That's because we have `move` for closures that capture. That's completely unrelated to reading code and not even knowing if a value was moved or not. I do know from my own experience that I rely on all those visual cues a lot. "none" vs "None" is entirely offtopic.

      2 replies 0 retweets 0 likes
      Patrick Walton‏ @pcwalton 24 Feb 2018
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      Replying to @nokusu @brendanzab and

      Or Moves-Based-On-Type. That was controversial too! Turned out to not matter.

      8:42 AM - 24 Feb 2018
      • 1 Like
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      1 reply 0 retweets 1 like
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        2. Anthony Ramine‏ @nokusu 24 Feb 2018
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          Replying to @pcwalton @brendanzab and

          Still offtopic. Moves based on type don't introduce mutability out of nowhere, nor does it radically change the meaning of an expression a hundred lines later like `T throws E` for example.

          1 reply 0 retweets 0 likes
        3. Patrick Walton‏ @pcwalton 24 Feb 2018
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          Replying to @nokusu @brendanzab and

          It’s not off topic! Stop it. MBOT doesn’t, but closures *do* introduce mutability “out of nowhere”. I don’t know about “T throws E”.

          1 reply 0 retweets 1 like
        4. 6 more replies

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