class Fixnum def self.fizzbuzzize alias org_to_s to_s def to_s if self%15 == 0 then "FizzBuzz" elsif self%3 == 0 then "Fizz" elsif self%5 == 0 then "Buzz" else self.org_to_s end end end def self.unfizzbuzzize undef to_s alias to_s org_to_s…

divisible_by = lambda { |base, num| (num % base).zero? }.curry divisible_by_15 = divisible_by[15] divisible_by_3 = divisible_by[3] divisible_by_5 = divisible_by[5] (1..100).each do |i| puts case i when divisible_by_15 then 'FizzBuzz' when …

class Fixnum def fizzbuzz w = {Fizz: 3, Buzz: 5}.select { |_, base| (self%base).zero? } w.empty? ? self : w.keys.join end end (1..100).each { |i| print "#{i.fizzbuzz} " } Enumerable#injectのほうがいいかな class Fixnum def fizzbuzz w = {Fiz…