Inconsistent behavior with double indexing?

[Andrea_Pagnani]

See also the somehow related old discussion here …

Create initialized arrays of structs

Dearests, today I found a disturbing (yet documented … ) behavior of julia. Let’s see: struct T a::Vector{Int}; end T(N) = T(zeros(Int,N)) Now aiming at a Vector of initialized Ts I (mistakenly) did a julia> x=fill(T(3),2) 2-element Array{T,1}: T([0, 0, 0]) T([0, 0, 0]) The problem is that now the 2 elements in the vector are indeed the same: julia> x[1].a[1] = 1; julia> x 2-element Array{T,1}: T([1, 0, 0]) T([1, 0, 0]) No big deal, a comprehension would have produced my intended resu…