What's the deal with StaticArrays?

[gdalle]

@Elrod

maybe a eachindex(x) == eachindex(y) || throw(DimensionMismatch("x and y indices don't equal")) in front of the loop, or something of that sort.

If I do this, will Julia be able to remove bounds checks on y[i] despite the loop being on eachindex(x) only? Does that solve my most common eachindex gripe below then?

Combining `eachindex` and `axes`?

One of the things I like about eachindex is that you can give it several arrays and it throws a DimensionMismatch if they have different sizes. I wonder if it would make sense to enable the same with axes(A, d), possibly choosing a different d for each A. With such a syntax, I would write a matrix-vector product like this: function matvec!(y::Vector{T}, A::Matrix, x::Vector) where {T} for i in axes((y, A), (1, 1)) y[i] = zero(T) for j in axes((A, x), (2, 1)) y[i…