bench.rb

require 'benchmark'

N = 200
range = 1..5000
Benchmark.bmbm do | x |
  x.report "loop" do
    N.times do
      a = []
      for i in range
        a << lambda{ i }
      end
    end # times  
  end # report "loop"  
  x.report "each" do
    N.times do
      a = []
      range.each do |i|
        a << lambda{ i }
      end
    end
  end
end # bmbm