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davidtolnay's profile
David Tolnay
David Tolnay
David Tolnay
@davidtolnay

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David Tolnay

@davidtolnay

Menlo Park, CA
Joined October 2018

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    1. Yaah  🍑 🦀 ☕‏ @yaahc_ 20 Dec 2019
      • Report Tweet
      • Report NetzDG Violation

      Yaah  🍑 🦀 ☕ Retweeted E.J. Mason

      I just wanted to open source my gsync crate and now I'm rewriting anyhow and considering writing an RFC to add a fn to Formatter.https://twitter.com/codeability/status/1207763291717566464 …

      Yaah  🍑 🦀 ☕ added,

      E.J. Mason @codeability
      In case you've ever wanted to know what ADHD is like: set out to do some programming on a side project last night and ended up reading about Henry VIII for 6 hours
      1 reply 0 retweets 7 likes
    2. knights who say nikolai‏ @NikolaiVazquez 20 Dec 2019
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      Replying to @yaahc_

      What’s the function?

      1 reply 0 retweets 0 likes
    3. Yaah  🍑 🦀 ☕‏ @yaahc_ 20 Dec 2019
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      Replying to @NikolaiVazquez

      is_termination so you can write formatting logic that is conditional upon being printed by main which let's you write nice error reporting types.

      1 reply 0 retweets 0 likes
    4. knights who say nikolai‏ @NikolaiVazquez 20 Dec 2019
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      Replying to @yaahc_

      That feels like an antipattern. I wish returning an error in main would just use the Display impl always

      3 replies 0 retweets 1 like
      David Tolnay‏ @davidtolnay 20 Dec 2019
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      Replying to @NikolaiVazquez @yaahc_

      David Tolnay Retweeted David Tolnay

      That seems to be almost everyone's instinct but it turns out using Display would be way worse (https://twitter.com/davidtolnay/status/1206980936639733761 …).

      David Tolnay added,

      David Tolnay @davidtolnay
      Replying to @kixunil @spacekookie @yaahc_
      I strongly disagree that it was a mistake, Display would be worse. In order for applications to have control over rendering cause chains, error types are required to *not* print their causes from the Display impl. The right approach is exposing is_termination on Formatter.
      11:44 AM - 20 Dec 2019
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      • knights who say nikolai Yaah 🍑🦀☕
      0 replies 0 retweets 2 likes

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