how to use array combinationn on a multidimensional array

Asked Mar 08 '17 at 14:56

Active Mar 08 '17 at 14:56

Viewed 35 times

If the values I was looking for were in two 1 dimensional arrays say, a1 = [valueineed,valueidontneed,valueidontneed] and a2 = [valueineed,valueidontneed,valueidontneed], i could do

array1.combination(2).select { |x, y| array2.include? x + y }.each do |x,y|
 do_something x, y
end

but I have this array instead. a1 = [[valuineed,valueidontneed],[valueineed,valueidontneed]], a2 = [[valueineed,valueidontneed],[valueineed, valueidontneed]] How do I acheive the same results the above program got on the previous array on the new array

asked Mar 08 '17 at 14:56

Mordred

Replace `array1` with `array1.flatten`, ditto for `array2`. – ndnenkov Mar 08 '17 at 15:00
Maybe delete this question as well. Seems more of an extension of your previous question. – Sagar Pandya Mar 08 '17 at 15:01
Im sorry, can i get any other method apart from flattening the array. Flattening the array will bring other variables to the options. can i get an array of [valueineed,valueineed,valueineed] from the multidimensional array. – Mordred Mar 08 '17 at 15:44
With the example data you provided, you can do `map(&:first)` to get only the first values in each subarray. – ndnenkov Mar 08 '17 at 16:00
Thank you very much – Mordred Mar 08 '17 at 16:11

how to use array combinationn on a multidimensional array

0 Answers0