How can I “extract” values from a multidimensional array in a smart way?

Question

I am using Ruby on Rails 3.2.2 and Ruby 1.9.2.

Given the following multidimensional Array:

[[\"value1\", \"value1_other\"], [\"value2\",         


        

Answer 1

arr = [["value1", "value1_other"], ["value2", "value2_other"], ["value3", "value3_other"]]

Solution1 = arr.map {|elem| elem.first}

Solution2 = arr.transpose[0]