parent directory

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• parent

examples/path/parent/src/main.rs

use std::path::Path;

fn main() {
    let path = Path::new("one/two/three/four.rs");
    println!("{}", path.display());

    println!("{}", path.parent().unwrap().display());

    match Path::new("/a/b").parent() {
        Some(val) => println!("ok {}", val.display()),
        None => println!("No parent"),
    }

    match Path::new("/a").parent() {
        Some(val) => println!("ok {}", val.display()),
        None => println!("No parent"),
    }

    match Path::new("/").parent() {
        Some(val) => println!("ok {}", val.display()),
        None => println!("No parent"),
    }

    match Path::new("").parent() {
        Some(val) => println!("ok {}", val.display()),
        None => println!("No parent"),
    }
}

one/two/three/four.rs
one/two/three
ok /a
ok /
No parent
No parent