// NOTE: This file should be kept in sync with README.md
use serde_derive::{Deserialize, Serialize};
use std::error::Error;
use std::fs::File;
// Types annotated with `Serialize` can be stored as CBOR.
// To be able to load them again add `Deserialize`.
#[derive(Debug, Serialize, Deserialize)]
struct Mascot {
name: String,
species: String,
year_of_birth: u32,
}
fn main() -> Result<(), Box<dyn Error>> {
let ferris = Mascot {
name: "Ferris".to_owned(),
species: "crab".to_owned(),
year_of_birth: 2015,
};
let ferris_file = File::create("examples/ferris.cbor")?;
// Write Ferris to the given file.
// Instead of a file you can use any type that implements `io::Write`
// like a HTTP body, database connection etc.
serde_cbor::to_writer(ferris_file, &ferris)?;
let tux_file = File::open("examples/tux.cbor")?;
// Load Tux from a file.
// Serde CBOR performs roundtrip serialization meaning that
// the data will not change in any way.
let tux: Mascot = serde_cbor::from_reader(tux_file)?;
println!("{:?}", tux);
// prints: Mascot { name: "Tux", species: "penguin", year_of_birth: 1996 }
Ok(())
}
