GitHub - mathematic-inc/unfmt: A compile-time pattern matching library that reverses the interpolation process of `format!`.
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A compile-time pattern matching library that reverses the interpolation process of `format!`. - mathematic-inc/unfmt
  • voklen@programming.dev
    2·
    6 months ago

    I love the concept! I recently wanted something just like this for a Flutter app I was making to parse a filename into a user defined format i.e.

    2024-04-12.txt with %Y-%M-%D.txt to {year: 2024, month: 04, day: 12}

    I’ll certainty be using this the next time I need anything like that in Rust though.

    • Ephera@lemmy.ml
      14·
      6 months ago

      You must’ve read that wrong.

      The first example, but formatted differently:

      let value = "My name is Rho.";
let result = unformat!("My {} is {}.", value);

      Now, result contains:

      Some(("name", "Rho"))

      …because the words “name” and “Rho” in value happened to be at the position of the {}-slots in the unformat!()-pattern.