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Split a Ruby array into two. from: http://heyrod.com/snippet/s/split-ruby-array-in-half.html
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| a = [1,2,3,4,5] | |
| # 2 new arrays | |
| left,right = a.each_slice( (a.size/2.0).round ).to_a | |
| # left == [1, 2, 3] | |
| # right == [4, 5] | |
| # make array 2-dimensional | |
| a.each_slice( (a.size/2.0).round ).to_a | |
| # a == [[1, 2, 3], [4, 5]] |
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