singleton-attr 0.1.9

Simple to use singleton procedural attribute and derive macro
Documentation 
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#[macro_use]
extern crate singleton_attr;
use singleton_attr::traits::Singleton;

#[derive(Debug, Default)]
pub struct Config {
    pub a: i32,
    pub b: &'static str,
    pub c: String,
}

singleton_manual!(Config);

fn main() {
    Config::init_instance(Config {
        a: 42,
        b: "hello",
        c: "world".to_string(),
    });

    let config = Config::get_instance();

    println!("{:?}", config);
}