mirror of https://github.com/smol-rs/vec-arena
33 lines
1.3 KiB
Markdown
33 lines
1.3 KiB
Markdown
# vec-arena (deprecated)
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[](
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https://github.com/smol-rs/vec-arena/actions)
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[](https://github.com/smol-rs/vec-arena)
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[](https://crates.io/crates/vec-arena)
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[](https://docs.rs/vec-arena)
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**This crate is now deprecated in favor of [slab](https://crates.io/crates/slab).**
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#### What is this?
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A simple object arena.
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You want to build a doubly linked list? Or maybe a bidirectional tree? Perhaps an even more
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complicated object graph?
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Managing ownership and lifetimes might be tough then. Your options boil down to:
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1. Use unsafe code to escape Rust's ownership rules.
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2. Wrap every object in `Rc<RefCell<T>>`.
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3. Use `Vec<T>` to store objects, then access them using indices.
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If the last option seems most appealing to you, perhaps `Arena<T>` is for you.
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It will provide a more convenient API than a plain `Vec<T>`.
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#### Examples
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Some data structures built using `Arena<T>`:
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* [Doubly linked list](https://github.com/smol-rs/vec-arena/blob/master/examples/linked-list.rs)
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* [Splay tree](https://github.com/smol-rs/vec-arena/blob/master/examples/splay-tree.rs)
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