rustHow to serialize JSON in Rust?

Serializing JSON in Rust is done using the serde crate. serde provides a powerful framework for serializing and deserializing data structures.

Example code

extern crate serde;
extern crate serde_json;

use serde::{Serialize, Deserialize};

#[derive(Serialize, Deserialize)]
struct Person {
    name: String,
    age: u8,
}

fn main() {
    let person = Person {
        name: "John".to_string(),
        age: 30,
    };

    let serialized = serde_json::to_string(&person).unwrap();

    println!("serialized = {}", serialized);
}

Output example

serialized = {"name":"John","age":30}

Code explanation

• extern crate serde; and extern crate serde_json;: imports the serde and serde_json crates.
• #[derive(Serialize, Deserialize)]: derives the Serialize and Deserialize traits for the Person struct.
• serde_json::to_string(&person).unwrap(): serializes the person struct into a JSON string.

Helpful links

• serde crate
• serde_json crate
• serde documentation

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