How do I add 'each' method to Ruby object (or should I extend Array)?

Question

I have an object Results that contains an array of result objects along with some cached statistics about the objects in the array. I\'d like the Results object to

Answer 1

This feels very c-like and I know Ruby has better way.

If you want an object to 'feel' like an array, than overriding << is a good idea and very 'Ruby'-ish.

but am not sure what the each method is really doing under the hood.

The each method for Array just loops through all the elements (using a for loop, I think). If you want to add your own each method (which is also very 'Ruby'-ish), you could do something like this:

def each
  0.upto(@result_array.length - 1) do |x|
    yield @result_array[x]
  end
end