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BrandonBloom's profile
Brandon Bloom
Brandon Bloom
Brandon Bloom
@BrandonBloom

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Brandon Bloom

@BrandonBloom

CTO of @LegalpadIO

Seattle, WA
brandonbloom.name
Joined May 2008

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    1. David R. MacIver‏ @DRMacIver Oct 23

      The more I use sum types for error handling the more convinced I am that exceptions are very good, actually.

      8 replies 2 retweets 24 likes
      Show this thread
    2. Jed Davis  🏳️‍🌈‏ @xlerb Oct 23
      Replying to @DRMacIver

      So, a failure mode I've run into (with a C++ port of Rust's Result) is where the error type is effectively unit, and code just tosses it up the stack, and eventually something asserts… but without the info from the part of the stack that was discarded.

      2 replies 0 retweets 0 likes
    3. David R. MacIver‏ @DRMacIver Oct 23
      Replying to @xlerb

      Right, exactly. Sum types for errors generally carry radically less information than the corresponding exception would - no error message or stack trace.

      2 replies 0 retweets 2 likes
    4. Brandon Bloom‏ @BrandonBloom Oct 23
      Replying to @DRMacIver @xlerb

      This is simultaneously the best and worst parts of manual error handling. When I write Go, for example, I manually wrap nearly every error with hand-crafted context and provenance. It’s wonderful. But now Go code I interact with does no such thing. It’s awful.

      1 reply 0 retweets 0 likes
      Brandon Bloom‏ @BrandonBloom Oct 23
      Replying to @BrandonBloom @DRMacIver @xlerb

      Also simultaneously the best and worst parts of exception handling. When I write code in a language with exceptions, almost nobody, myself included, does the work of customizing provenance and context. Despite the convenience, just stack traces is eventually not good enough.

      9:13 AM - 23 Oct 2018
      • 1 Like
      • 💻🐴Ngnghm
      1 reply 0 retweets 1 like
        1.  💻 🐴Ngnghm‏ @Ngnghm Oct 25
          Replying to @BrandonBloom @DRMacIver @xlerb

          At ITA, we used to have macros that would use dynamic binding of variables and condition handlers to introduce debugging frames with a human-readable explanation of the evaluation context. That was great for debugging and logging.

          0 replies 0 retweets 1 like
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