Not exactly sure what you want, but would this work for you?
Array{Int,2}(undef, 1, 0)
x = Array{Int,2}(undef, 1, 0)
for i in 1:10
global x = hcat(x, i)
end
x
1×10 Array{Int64,2}:
1 2 3 4 5 6 7 8 9 10
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