bench_concat.rb

require 'benchmark'

amount = 100000
times = 100


Benchmark.bmbm do |bm|
  bm.report("CONCAT") do
    str = "012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789"
    j = 0
    while (j < times)
      i = 0
      new_str = ""
      while (i < amount)
        new_str.concat(str)
        i += 1
      end
      j += 1
    end
  end
end