Educational implementation of the ls command in Rust. Doesn't support globbing nor proper error handling.

ls.rs

pub fn main() {
    // collect the command line arguments into a vector of string
    let mut argv: Vec<String> = std::env::args().collect();

    // if no arguments are given assume the current directory
    if argv.len() < 2 {
        argv.push(String::from("."));
    }

    // iterate over the vector of args ignoring the first argument
    for arg in &argv[1..] {
        // iterate over every entry in the dir
        for fd in std::fs::read_dir(arg).expect("Couldn't read directory.") {
            // get the entry name
            let name = fd.expect("Couldn't read entry.").file_name();
            let name = name.to_string_lossy();

            // ignore entry starting with a dot
            if !name.starts_with(".") {
                // print entry name without newline
                print!("{} ", name);
            }
        }

        // print a trailing newline for every argument
        println!("");
    }
}