(I’m just starting off with rust, so please be patient)

Is there an idiomatic way of writing the following as a one-liner, somehow informing rustc that it should keep the PathBuf around?

// nevermind the fully-qualified names
// they are there to clarify the code
// (that's what I hope at least)

let dir: std::path::PathBuf = std::env::current_dir().unwrap();
let dir: &std::path::Path   = dir.as_path();

// this won't do:
// let dir = std::env::current_dir().unwrap().as_path();

I do understand why rust complains that “temporary value dropped while borrowed” (I mean, the message says it all), but, since I don’t really need the PathBuf for anything else, I was wondering if there’s an idiomatic to tell rust that it should extend its life until the end of the code block.

  • _hovi_@lemmy.world
    2·
    vor 2 Monaten

    As someone else said I think the shadowing works well here.

    I do also wanna mention that depending on why you need this conversion, you could use impl AsRef<std::path::Path> for your function signature so it can accept &PathBuf or &Path. Then, just use that argument with e.g. p.as_ref() to get a &Path in the function body