Would like to exploit the following behaviour in Ruby
ary = Array.new(5) { |i|
[i, j=2*i, k=j+1]
}
p ary #> [[0, 0, 1], [1, 2, 3], [2, 4, 5], [3, 6, 7], [4, 8, 9]]
It works for my purposes, but I couldn't find in the language definition whether this is legal Ruby. Is it? Or is it likely to break in the future?
[Edit] A smaller working example raising the same issue is
i = 1
ary = [i, j=2*i, k=j+1]
p ary #> [1, 2, 3]
But of course this example only has theoretical relevance contrary to the first, which does have practical relevance.