Converting ruby array to array of consecutive pairs

Question

What is the easiest way to convert a ruby array to an array of consecutive pairs of its elements?

I mean:

x = [:a, :b, :c, :d]

Expe

Answer 1

Use Enumerable#each_slice:

y = x.each_slice(2).to_a
#=> [[:a, :b], [:c, :d]]

[0, 1, 2, 3, 4, 5].each_slice(2).to_a
#=> [[0, 1], [2, 3], [4, 5]]

Answer 2

Hash[*[:a, :b, :c, :d]].to_a