This is a crate with arenas that work with indices. Currently there are three
types: SmallArena uses 32-bit indices and can hold up to 2³² objects.
TinyArena uses 16-bit indices and can hold up to 65535 objects, regardless
of object size. NanoArena uses 8-bit indices and contain up to 255 objects.
This can conserve memory in scenarios where we have a large-ish number of
relations between objects, e.g. in graph algorithms. NanoArena is likely
most useful in embedded scenarios.
Add the following dependency to your Cargo.toml
toml
compact_arena = "0.2.0"
By default, the TinyArena uses no unsafe code to maintain storage, but
requires the stored types to be Default + Copy. To change this, you can use
the uninit feature to enable usage on all types with a bit more unsafe code:
toml
compact_arena = { version = "0.2.0", features = ["uninit"] }
In your code, use it as follows:
```rust use compactarena::inarena;
in_arena!(arena, { let hello = arena.add("Hello"); let world = arena.add("World"); println!("{}, {}!", arena[hello], arena[world]); }); ```
For further information, please read the documentation.
Licensed under either of
at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.