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//! This example shows how to wrap a data structure in a mutex to achieve safe mutability.
extern crate lazy_static;
use lazy_static::lazy_static;
use std::collections::HashMap;
use std::sync::Mutex;
lazy_static! {
static ref MUTEX_MAP: Mutex<HashMap<u32, &'static str>> = {
let mut m = HashMap::new();
m.insert(0, "foo");
m.insert(1, "bar");
m.insert(2, "baz");
Mutex::new(m)
};
}
fn main() {
MUTEX_MAP.lock().unwrap().insert(0, "boo");
println!(
"The entry for `0` is \"{}\".",
MUTEX_MAP.lock().unwrap().get(&0).unwrap()
);
}
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