use std::{
    fs::{self, DirEntry},
    io,
    path::Path,
    time::Instant,
};

fn main() {
        let dir: Vec<&str> = "directory/path".splitn(2, "/").collect();
        println!("{:?}", dir[0]);
}
///walking a directory only visiting files
pub fn visit_dirs(dir: &Path, cb: dyn Fn(&DirEntry)) -> io::Result<()> {
    //if path provided leads to a directory
    if dir.is_dir() {
        for entry in fs::read_dir(dir)? {
            let entry = entry?;
            let path = entry.path();
            //for each entry check if it is dir itself
            if path.is_dir() {
                //if so, execute recoursively
                visit_dirs(&path, cb)?;
            } else {
                //do stuff with a file
                cb(&entry);
            }
        }
    }
    Ok(())
}