generic-array
This crate implements generic array types for Rust.
Usage
The Rust arrays [T; N]
are problematic in that they can't be used generically with respect to N
, so for example this won't work:
generic-array defines a new trait ArrayLength<T>
and a struct GenericArray<T, N: ArrayLength<T>>
, which let the above be implemented as:
To actually define a type implementing ArrayLength
, you can use two types _0
and _1
grouped in tuples to form a binary representation, e.g.:
type _5 = ((_1, _0), _1);
Then you can use GenericArray<T, _5>
almost like you would use [T; 5]
:)