Language: Rust

I have done this already in Python:

file = max([f for f in os.scandir("files")], key=lambda x: x.stat().st_mtime).name

And now i want to get that in rust too.

I want to get the last modified file in a dir. this is how i read the dir:

let filecheck = fs::read_dir(path)
for path in filecheck {
   
}

but i dont know how to use the metadata::modified function to get the list of modified dates and then get the latest one.

I tried to use metadata::modified function and expected to get the result i want. What i got where errors.

CodePudding user response：

In the future, please describe what errors you encounter while attempting a problem.

Here's a rust snippet that scans the current directory and prints out the most recent file:

use std::fs;

fn main() {
    let mut entries: Vec<fs::DirEntry> = fs::read_dir(".").expect("Couldn't access local directory")
        .flatten() // Remove failed
        .collect();
    entries.sort_by_cached_key(|f| f.metadata().unwrap().modified().unwrap());

    println!("Most recent file: {:?}", entries[0]);
}

Notice the several uses of expect and unwrap. Accessing file metadata is not guaranteed to succeed. The program above assumes it always will succeed for the sake of simplicity.