Increment some components of a vector

[Benoit_Gaudeul]

Thanks a lot for your replies, both ways seem great, and I’m glad to discover this @view functionality.

Could you explain what are views?

Try and modify the result, and you’ll see the difference: julia> A = [1 2; 3 4]; julia> B = A[:,:]; # This is actually a copy of A julia> B[1,1]=0; julia> A 2×2 Array{Int64,2}: 1 2 3 4 julia> B 2×2 Array{Int64,2}: 0 2 3 4 But: julia> B = @view A[:,:]; # B is a view of A julia> B[1,1]=0; julia> A # Ooops! 2×2 Array{Int64,2}: 0 2 3 4 julia> B 2×2 view(::Array{Int64,2}, :, with eltype Int64: 0 2 3 4 In this particular case, it’s the same as B = A, so @view does not se…