use std::collections::HashMap;
use serde::{Deserialize, Serialize};
use serde_json::{Result};

#[derive(Serialize, Deserialize, Debug)]
struct Person {
    name: String,
    min: String,
    max: String,
    step: u8
}

fn typed_example() -> Result<()> {
    // Some JSON input data as a &str. Maybe this comes from the user.
    let data = r#"
        {
            "$1": {
                "name":"$1",
                "step": 1,
                "min": "1",
                "max": "100"
            },
            "$2": {
                "name":"$2",
                "step": 3,
                "min": "1",
                "max": "100"
            }
        }"#;

    let m: HashMap<String, Person> = serde_json::from_str(data)?;

    println!("{:?}", m);

    Ok(())
}

fn main() {
    typed_example().unwrap();
}