to parse a YAML file with Rust, you can use the serde_yaml crate.

Here’s an example of how to parse a YAML file in Rust using serde_yaml

parse yaml file with rust

use serde::Deserialize;
use serde_yaml::{from_reader, Value};
use std::fs::File;

#[derive(Deserialize)]
struct Config {
    name: String,
    age: u8,
    hobbies: Vec<String>,
}

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let file = File::open("config.yaml")?;

    let config: Config = from_reader(file)?;

    println!("Name: {}", config.name);
    println!("Age: {}", config.age);
    println!("Hobbies: {:?}", config.hobbies);

    Ok(())
}

This example defines a struct called Config that represents the structure of the YAML file.The Config struct is annotated with #[derive(Deserialize)], which tells the serde crate to generate a function that can deserialize a Config from a YAML file.

The example then opens the config.yaml file and uses the from_reader function to deserialize the file into a Config struct.

Finally, the example prints the fields of the Config struct to the console.

You can also use the serde_yaml crate to parse a YAML string in memory, rather than reading from a file. To do this, you can use the from_str function instead of the from_reader function.