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