blocks.rb

#!/usr/bin/env ruby

def each(array)
  array.length.times do |i|
    yield array[i]
  end
end

def select(array)
  result = []
  array.length.times do |i|
    result << array[i] if yield(array[i])
  end
  result
end

array = [0,1,2,3]

# each(array) do |element|
#   puts element
# end

odds = select(array) do |element|
  element.odd?
end

puts odds

starbucks = Starbucks.new

def latte(number)
  # ...make latte and put all cups in all_cups
  all_cups.each do |latte|
    yield latte
  end
  all_cups
end

starbucks.latte(10) do |latte|
  latte.add_cream! if latte.number < 5
end


bikes.count {|bike| bike.broken?}