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sgrif's profile
Miss Dada 🏳️‍⚧️
Miss Dada 🏳️‍⚧️
Miss Dada  🏳️‍⚧️
@sgrif

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Miss Dada  🏳️‍⚧️

@sgrif

Co lead of the http://crates.io  team. Creator of @dieselframework. Former host of @_bikeshed and @_yakshave. Former Rails comitter. Enby. they/them

Albuquerque, NM
patreon.com/seantheprogram…
Joined November 2008

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    1. Miss Dada  🏳️‍⚧️‏ @sgrif Jun 7
      • Report Tweet
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      Replying to @sgrif @ekuber

      With the unrelated compiler error removed https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=2b665a6403bd4fa87ea51da5230550d8 …

      1 reply 0 retweets 1 like
    2. Esteban K –  🦀 ⚙️@home‏ @ekuber Jun 7
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      Replying to @sgrif

      I see what happens... The suggestion is currently naive and only works well if there's only one inferred 'static, but here there are two and I wrote no code to account for them.

      1 reply 0 retweets 3 likes
    3. Esteban K –  🦀 ⚙️@home‏ @ekuber Jun 7
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      Replying to @ekuber @sgrif

      Great repro case, I'll see if I can do something about it.

      1 reply 0 retweets 4 likes
    4. Miss Dada  🏳️‍⚧️‏ @sgrif Jun 7
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      Replying to @ekuber

      Yeah luckily this was easy to spot at the time because the code (written before impl trait and '_) was previously returning `Box<dyn Iterator<Box<dyn Stage + 'a>> + 'a>`. I was just curious if I could omit any/both of those lifetimes now.

      1 reply 0 retweets 1 like
    5. Miss Dada  🏳️‍⚧️‏ @sgrif Jun 7
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      Replying to @sgrif @ekuber

      Ironically you *can* omit the one the compiler suggests

      1 reply 0 retweets 1 like
    6. Miss Dada  🏳️‍⚧️‏ @sgrif Jun 7
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      Replying to @sgrif @ekuber

      Anyway I'm going to just keep following the compiler's suggestions. I'm sure it'll work eventually.

      1 reply 0 retweets 1 like
    7. Esteban K –  🦀 ⚙️@home‏ @ekuber Jun 7
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      Replying to @sgrif

      I'm happy that this works https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=42d893e4d8b401d160ed8f94c55228e1 … but I'm still convinced that the implicit 'static when dealing with traits was an ergonomic mistake.

      1 reply 0 retweets 3 likes
    8. Miss Dada  🏳️‍⚧️‏ @sgrif Jun 7
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      Replying to @ekuber

      Yes I 100% agree. I'm also pretty sure it's not really documented anywhere. I learned about it from some friends on the lang team

      1 reply 0 retweets 1 like
    9. Esteban K –  🦀 ⚙️@home‏ @ekuber Jun 7
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      Replying to @sgrif

      The or linked earlier (and it's predecessors) aim at documenting it, as well as teaching that 'static can mean "owned", but that later point still needs a bit of work.

      1 reply 0 retweets 0 likes
    10. Esteban K –  🦀 ⚙️@home‏ @ekuber Jun 7
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      Replying to @ekuber @sgrif

      I just checked and this is going to be the new outputpic.twitter.com/4gD1oeHIRc

      1 reply 0 retweets 2 likes
      Miss Dada  🏳️‍⚧️‏ @sgrif Jun 7
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      Replying to @ekuber

      Certainly better. Now if it can just recommend a suggestion that isn't nonsense ;)

      6:27 PM - 7 Jun 2020
      1 reply 0 retweets 0 likes
        1. New conversation
        1. Esteban K –  🦀 ⚙️@home‏ @ekuber Jun 7
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          Replying to @sgrif

          Working on it. Trying things out but it'll be always a guess, because by the time we have the lifetimes we cannot tie those back to the exact part of the type.

          1 reply 0 retweets 1 like
        2. Esteban K –  🦀 ⚙️@home‏ @ekuber Jun 7
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          Replying to @ekuber @sgrif

          You can get quite far with reconstructing it and infer things from context (like suggesting '_ on all dyn/impl traits) but for more complex cases we'll still have something slightly incorrect, I fear. Until we refactor the lifetime analysis to hold on to more type data for errors

          1 reply 0 retweets 1 like
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