Finding files with glob patterns

As you may have noticed, using walkdir to filter files based on their name can be a bit clunky at times. Luckily, you can greatly simplify this by using the glob crate, which brings you its titular patterns, known from Unix, right into Rust.

How to do it...

Follow these steps:

1. Open the Cargo.toml file that was generated earlier for you.

2. Under [dependencies], add the following line:

glob = "0.2.11"

3. If you want, you can go to glob's crates.io page (https://crates.io/crates/glob) to check for the newest version and use that one instead.

4. In the bin folder, create a file called glob.rs.

5. Add the following code and run it with cargo run --bin glob:

1    extern crate glob;
2    use glob::{glob, glob_with, MatchOptions};
3 
4    fn main() {
5      println!("All all Rust files in all subdirectories:");
6      for entry in glob("**/*.rs").expect("Failed to read glob
       pattern") {
7        match entry {
8          Ok(path) => println!("{:?}", path.display()),
9      ...