【Rust日报】 2019-05-19：Nokia 用 Rust 写了一个 Linux 内存调优工具

// src/main.rs code
use cerebrallib::cerebral;
use std::io
fn main() {
    let code = String::from("++++");
    let mut vm = cerebral::CerebralVM::new(code, io::stdin(), io::stdout());
    vm.execute();
}

// A normal Diesel model
#[derive(Clone, Queryable)]
struct Country {
    pub id: i32,
    pub name: String,
}

// Our factory
#[derive(Clone, Factory)]
#[factory(model = "Country", table = "crate::schema::countries")]
struct CountryFactory {
    pub name: String,
}

// Setting up what the default values are
impl Default for CountryFactory {
    fn default() -> Self {
        Self {
            name: "Denmark".into(),
        }
    }
}

#[test]
fn some_test() {
    let con = establish_connection();

    // Using all the defaults
    let denmark = CountryFactory::default().insert(&con);
    assert_eq!("Denmark", denmark.name);

    // Defaults can be changed through builder methods
    let netherlands = CountryFactory::default()
        .name("Netherlands")
        .insert(&con);
    assert_eq!("Netherlands", netherlands.name);
}