def my_each(array)
  counter = 0
  while counter < array.length
    yield(array[counter])
    counter += 1
  end
end

my_each([1,2,3]) do |element|
  p element
end

def my_map(array)
  new_array = []
  counter = 0
  # could also use .each here
  while counter < array.length
    new_array << yield(array[counter])
    counter += 1
  end
  return new_array
end

my_map([1,2,3]) do |element|
  p element * 10
end

def another_yield
  yield
end

another_yield do
  5.times do
    p 'hello'
  end
end