this post was submitted on 24 Apr 2025
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The Rust Programming Language

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Why doesn't Write use an associated type for the Error? (old.reddit.com)
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The original was posted on /r/rust by /u/WeeklyRustUser on 2025-04-23 21:09:02+00:00.

Currently the Write trait uses std::io::Error as its error type. This means that you have to handle errors that simply can't happen (e.g. writing to a Vec should never fail). Is there a reason that there is no associated type Error for Write? I'm imagining something like this.

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