"Arrays of sizes from 0 to 32 (inclusive) implement the following traits if the element type allows it: Clone (only if T: Copy) Debug IntoIterator (implemented

"Arrays of sizes from 0 to 32 (inclusive) implement the following traits if the element type allows it: Clone (only if T: Copy) Debug IntoIterator (implemented for &[T; N] and &mut [T; N]) PartialEq, PartialOrd, Eq, Ord Hash AsRef, AsMut Borrow, BorrowMut Default This limitation on the size N exists because Rust does not yet support code that is generic over the size of an array type. [Foo; 3] and [Bar; 3] are instances of same generic type [T; 3], but [Foo; 3] and [Foo; 5] are entirely different types. As a stopgap, trait implementations are statically generated up to size 32." from the rust docs. https://doc.rust-lang.org/std/primitive.array.html https://doc.rust-lang.org/std/primitive.array.html i sort of leapt to the conclusion that these traits couldn't be implemented because generically because the type system requires them to be implemented for each size of N, and they provide the first 32 as a nicety. the similarity to the situation with tuples in haskell, (http://stackoverflow.com/questions/2978389/haskell-tuple-size-limit http://stackoverflow.com/questions/2978389/haskell-tuple-siz...), and the fact that rust doesn't have dependent types and so a type couldn't depend on a value, and i just kind of guessed at a possible reason.