arc-cell

Documentation

A simple library for a concurrent Cell-like object containing an Arc/Weak reference.

toml [dependencies] arc-cell = "0.3"

Usage

Lightweight swappable Arc member

```rust use std::sync::Arc; use arc_cell::ArcCell;

pub struct Thing { data: ArcCell>, }

impl Thing { pub fn update(&self, data: Arc>) { self.data.set(data); } } ```

Self-referencial structure

```rust use std::sync::Arc; use arc_cell::WeakCell;

pub struct Thing { self_ref: WeakCell, // ... }

impl Thing { pub fn new() -> Arc { let thing = Arc::new(Thing { self_ref: WeakCell::empty(), });

    thing.self_ref.store(&thing);
    thing
}

pub fn clone_ref(&self) -> Arc<Thing> {
    self.self_ref.upgrade().expect("This should be valid if we have a valid self")
}

} ```