Remon is a responsible library developer. She cares about stability, flexibility and correctness, using whichever tools are presently accessible to achieve those goals. Her authored libraries feature automated testing and extensive documentation; she allots design decisions rationale; she knows her language features and traditions and how to apply them to best effect.

A short post on how variable names can leak out of macros if there is a name collision with a constant. I thought this was a delightful read!

  • BB_C@programming.dev
    01·
    9 months ago

    Maybe a good idea for a post. But the amount of reaches required makes this icky.

    • Pretending people write:
      let Ok(x) = read_input() else { return Err(Error) };
      instead of
       let x = read_input().map_err(|_| ...)?;
    • Pretending people write:
       const x: &str = "...";
      instead of
       const X: &str = "...";
    • Pretending there exist people who have such knowledge of rust macros hygiene, ident namespaces, etc, but somehow don’t know about how macro code expands (the “shock” about the compile error).

    Maybe there is a reason after all why almost no one (maybe no one, period) was ever in that situation.

    • BB_C@programming.dev
      1·
      9 months ago

      Also:

      A short post on how variable names can leak out of macros

      I don’t think you understood the blog OP!