A mutex for Rust that never deadlocks.
A Slock, or Smart Lock, is a smart wrapper around an atomically reference counted read/write lock.
All accesses and modifications are done in a contained manner. This ensures that threads will never deadlock on a Slock operation.
```rust // Create a new lock with an initial value let lock = Slock::new(5i32);
// Change the lock's value lock.set(|v| v + 1).await;
// Get the lock's value let value = lock.get().await; // Or if the value doesn't implement copy let value = lock.get_clone().await;
assert_eq!(value, 6); ```
It's also possible to extract only the data you need from larger structures without the need to clone the entire thing.
```rust // A user struct that doesn't implement copy struct User { name: String, age: i32, // ... lots of other things }
let user = Slock::new(User { name: "Bob", age: 32, // ... lots of other things });
// Get just the name // This performs a clone on only the name let name = user.map(|v| v.name.clone()).await;
// Get just the age // Extracts only the age, leaving everything else untouched let age = user.map(|v| v.age).await; ```