readme/
readme.rs

1use setting_tracker::Setting;
2
3#[derive(Default, Debug)]
4struct Settings {
5    port: Setting<u16>,
6    domain: Setting<String>,
7}
8fn main() {
9    let mut settings = Settings::default(); // equivalent of `Settings { port: 0, domain: "".to_string() }`
10    settings
11        .port
12        .cb(|old, new| println!("port: {:?} -> {:?}", old, new));
13    settings.port.set(1);
14    settings.port.set(10);
15    let _ = settings.domain.get();
16    let _ = settings.domain.as_ref();
17}
18
19/*
20Output:
21    port: 0 -> 1
22    port: 1 -> 10
23 */