Can I alias an array element to a simple name like `x`?

[fredrikekre]

You can use single-element views:

julia> a = collect(700:710);

julia> b = @view a[10]
0-dimensional view(::Array{Int64,1}, 10) with eltype Int64:
709

julia> b .= 6
0-dimensional view(::Array{Int64,1}, 10) with eltype Int64:
6

julia> a[10]
6