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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. Patrick Walton‏ @pcwalton Oct 19

      An important goal of programming language design should be to make it as hard as possible to come up with stupid tricky interview questions.

      16 replies 292 retweets 1,305 likes
    2. Felix S K II‏ @pnkfelix Oct 19
      Replying to @pcwalton

      I’m pretty sure Rust fails that test badly

      2 replies 0 retweets 6 likes
      Patrick Walton‏ @pcwalton Oct 19
      Replying to @pnkfelix

      Does it? I guess so, but not as badly as most other popular languages.

      8:26 AM - 19 Oct 2018
      • 2 Likes
      • Gibson Fahnestock Nabeel Omer
      1 reply 0 retweets 2 likes
        1. New conversation
        2. stymaar  ⭐ ⭐‏ @stymaar Oct 19
          Replying to @pcwalton @pnkfelix

          Well, it's indeed better than C++ or even C. But I'm not even sure it's better than JavaScript in that regards.

          1 reply 0 retweets 3 likes
        3. stymaar  ⭐ ⭐‏ @stymaar Oct 19
          Replying to @stymaar @pcwalton @pnkfelix

          The good thing is: in Rust the answer to most of the tricky questions for those other languages would be “it fails to compile” instead of “it does some insanely stupid shit that will haunt you for days in production”.

          1 reply 0 retweets 26 likes
        4. unsafe { &**rreverser }‏ @RReverser Oct 20
          Replying to @stymaar @pcwalton @pnkfelix

          If it fails to compile, it's not a tricky question :)

          1 reply 0 retweets 3 likes
        5. Felix S K II‏ @pnkfelix Oct 20
          Replying to @RReverser @stymaar @pcwalton

          <show code>. Q1. “What is misleading about rustc’s diagnostic here?” Q2. “Fix the code to compile (and work)”

          1 reply 0 retweets 3 likes
        6. Felix S K II‏ @pnkfelix Oct 20
          Replying to @pnkfelix @RReverser and

          I haven’t shown the code yet but I could come up with some tricky examples. They wouldn’t be usable forever, assuming compiler diagnostics and language expressiveness improves over time. But still seems like it would fall into bucket pcwalton defined.

          1 reply 0 retweets 0 likes
        7. Felix S K II‏ @pnkfelix Oct 20
          Replying to @pnkfelix @RReverser and

          Still, I admit that as an interviewer, i would need to *work* to do this. And thus @pcwalton’s desire may be met in this instance.

          1 reply 0 retweets 0 likes
        8. unsafe { &**rreverser }‏ @RReverser Oct 20
          Replying to @pnkfelix @stymaar @pcwalton

          I'd rather choose any of problems which Rust doesn't consider unsafe - memory leaks, panics, etc. - which are relatively easy to trigger with just standard library and minimal examples - and ask to find them.

          1 reply 0 retweets 2 likes
        9. unsafe { &**rreverser }‏ @RReverser Oct 20
          Replying to @RReverser @pnkfelix and

          (these might fall into tricky questions bucket, but not useless ones IMO)

          1 reply 0 retweets 2 likes
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