FizzBuzz One Line in Ruby - which is fastest?

fizzbuzz_one_line.rb

#!/bin/ruby

require "benchmark"

iterations = 100_000
Benchmark.bm do |bm|
  bm.report do
    iterations.times do
      (1..100).each{|i| (str = (i%3!=0 ? '':"Fizz")+(i%5!=0 ? '':"Buzz")).empty? ? i : str}
    end
  end

  bm.report do
    iterations.times do
      (1..100).map { |i| (fb = [["Fizz"][i % 3], ["Buzz"][i % 5]].compact.join).empty? ? i : fb }
    end
  end
end

 #      user     system      total        real
 #  3.320000   0.040000   3.360000 (  3.437508)
 #  7.980000   0.090000   8.070000 (  8.289550)