Ruby monkey patch for a version of Array#delete_at that returns the array with the element at the given index removed rather than returning the removed element

remove_at.rb

class Array
  def remove_at(i)
    # handle index out of bounds by returning unchanged array
    return self if i >= self.length

    # remove the i-th element from the end if i is negative
    if i < 0
      i += self.length
      # handle index out of bounds by returning unchanged array
      return self if i < 0
    end

    # Return an array composed of the elements before the specified
    # index plus the elements after the specified index
    return self.first(i) + self.last(self.length - i - 1)
  end
end

test = [0,1,2,3,4,5]
puts test.remove_at(3).inspect
puts test.remove_at(5).inspect
puts test.remove_at(6).inspect
puts test.remove_at(-7).inspect
puts test.remove_at(-2).inspect