Serialize and deserialize with serde

examples/serialize-deserialize-with-serde/Cargo.toml

[package]
name = "serialize-deserialize-with-serde"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
serde = { version = "1.0.199", features = ["derive"] }
serde_json = "1.0.116"

examples/serialize-deserialize-with-serde/src/main.rs

use std::error::Error;

use serde::{Serialize, Deserialize};

#[derive(Serialize, Deserialize)]
enum Animal {
    #[serde(default="cat")]
    Cat,
    Dog,
}

#[derive(Serialize, Deserialize)]
struct Pet {
    name: String,
    class: Animal,
}

fn main() -> Result<(), Box<dyn Error>> {
    let my_dog = Pet {
        name: String::from("Chewy"),
        class: Animal::Dog,
    };

    let my_cat = Pet {
        name: String::from("Kitty"),
        class: Animal::Cat,
    };

    println!("{}", serde_json::to_string_pretty(&my_dog)?);
    println!("{}", serde_json::to_string_pretty(&my_cat)?);

    Ok(())
}