How to select array elements in a given range in Ruby?

Question

I have an array with let\'s say, 500 elements. I know I can select the first 100 by doing .first(100), my question is how do I select elements from 100 to 200?

Answer 1

dvcolgan’s answer is right, but it sounds like you might be trying to break your array into groups of 100. If that’s the case, there’s a convenient built-in method for that:

nums = (1..500).to_a

nums.each_slice(100) do |slice|
  puts slice.size
end

# => 100, 100, 100, 100, 100