Same assignment operator thing with more print statements

gistfile1.rb

class FakeCache
  def self.write(key,value)
    File.open(key,'w') { |f| f.write(value) }
  end
  def self.read(key)
    begin
      File.open(key).each_line{ |s| result = s }
      result
    rescue
      return nil
    end
  end
end

class TestOp
  def self.cache_key=(num)
    #Rails.cache.write('restaurant_cache_key', num)
    puts "CALLING THE ASSIGNMENT OPERATOR."       #### <====== ADDED THIS!!!!
    FakeCache.write('restaurant_cache_key', num)
  end
  def self.cache_key
    #unless r = Rails.cache.read('restaurant_cache_key')
    unless r = FakeCache.read('restaurant_cache_key')
      puts "IN THE RAND BLOCK."                   #### <====== ADDED THIS!!!!
      r = rand(10000)
      FakeCache.write('restaurant_cache_key', r.to_s)
    end
    return r.to_i
  end
end

# start w/ a clean slate
File.delete('restaurant_cache_key')
puts TestOp.cache_key
TestOp.cache_key += 1
puts TestOp.cache_key


# ~/_work/elctech/temp> ruby testop.rb
# IN THE RAND BLOCK.
# 3988
# IN THE RAND BLOCK.
# CALLING THE ASSIGNMENT OPERATOR.
# IN THE RAND BLOCK.
# 8156
# ~/_work/elctech/temp> ruby testop.rb
# IN THE RAND BLOCK.
# 5821
# IN THE RAND BLOCK.
# CALLING THE ASSIGNMENT OPERATOR.
# IN THE RAND BLOCK.
# 4281