Arena storage pool: Difference between revisions

drop stemmed_array.</lang>

 

<lang rust>#![feature(rustc_private)]

 

// chunk size is configurable as an argument to TypedArena::with_capacity if necessary.

let arena = TypedArena::new();

// The arena crate contains two types of arenas: TypedArena and Arena. Arena is

// reflection-basd and slower, but can allocate objects of any type. TypedArena is faster, and

// to allocate an integer, then Rust's compiler knows it is an integer arena.

let v1 = arena.alloc(1i32);

// TypedArena returns a mutable reference

let v2 = arena.alloc(3);

*v2 += 38;

println!("{}", *v1 + *v2);

// The arena's destructor is called as it goes out of scope, at which point it deallocates

// everything stored within it at once.