Iterating through each array in array of arrays

Question

I have an array of arrays:

array = [
          [1,2,3],
          [4,5,6],
          [7,8,9]
        ]

How would I iterate over each array and print them out individually, without using map?

Something like

array.each do |a|  
  puts a
end

> [1,2,3]
> [4,5,6]
> [7,8,9]

Replace puts a with another .each call, this time with a.each instead of array.each. — Jason
– Jason, Commented Oct 28, 2015 at 18:58

steenslag · Accepted Answer · 2015-10-28 19:01:50Z

3

The to_s method of Array gives a string representation.

array = [ [1,2,3],
          [4,5,6],
          [7,8,9]]

array.each do |a|  
  puts a.to_s  #or just: p a
end

Output

[1, 2, 3]
[4, 5, 6]
[7, 8, 9]

edited Oct 28, 2015 at 19:01

answered Oct 28, 2015 at 18:49

steenslag

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2 Comments

Cary Swoveland Over a year ago

I initially missed your comment, #or just: p a. That would seem to be the better (and more conventional) way, as it does not require the creation of a new object.

steenslag Over a year ago

@CarySwoveland p just calls inspect. AFAIK it creates a new String.

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