Rust serde_json , jsonからvec変換と 繰り返し処理の例

main-o3-pub.rs

// Rust serde_json , jsonからvec変換と 繰り返し処理の例
//
// [dependencies]
// serde = { version = "1.0", features = ["derive"] }
// serde_json = "1.0"

use serde::{Deserialize, Serialize};
use serde_json::{Result, Value};


fn type_of<T>(_: T) -> &'static str {
    std::any::type_name::<T>()
}

#[derive(Serialize, Deserialize, Debug)]
struct Point {
    name: String,
    age: i32,
}
//
pub fn test() -> Result<()>{
    let data = r#"
    [
        {
            "name": "John Doe",
            "age": 43
        },
        {
            "name": "Joh-2",
            "age": 23
        },
        {
            "name": "Joh-3",
            "age": 28
        }
    ]
    "#; 
    let deserialized: Vec<Point> = serde_json::from_str(data).unwrap();
    //println!( "{:?}"  , deserialized );
    for row in &deserialized {
        println!("name={}", row.name );
        println!("age={}", row.age );
    }     

    Ok(())
}

//
fn main() {
    test();
}