Macro generic_array::box_arr
source · macro_rules! box_arr { ($($x:expr),* $(,)*) => { ... }; ($x:expr; $N:ty) => { ... }; ($x:expr; $n:expr) => { ... }; }
Available on crate feature
alloc
only.Expand description
Like arr!
, but returns a Box<GenericArray<T, N>>
Unlike arr!
, this is not limited by stack size, only the heap.
Example:
// allocate a 16MB Buffer of u128 elements (16 bytes * 10 ^ 6)
let test = box_arr![1u128; typenum::Exp<U10, U6>];
// test: Box<GenericArray<u128, _>>
§NOTES AND LIMITATIONS
- The
[T; usize]
explicit and[0, 1, 2, 3]
implicit forms are limited to lengths supported byConst<U>