require "benchmark" require "benchmark/ips" array = Range.new(1,1_000_000).to_a Benchmark.bmbm do |x| x.report("#inject &:*") { array.inject &:* } x.report("#inject :*") { array.inject :* } end # Rehearsal ----------------------------------------------- # #inject &:+ 0.150000 0.000000 0.150000 ( 0.170740) # #inject :+ 0.110000 0.000000 0.110000 ( 0.118186) # -------------------------------------- total: 0.260000sec # user system total real # #inject &:+ 0.140000 0.000000 0.140000 ( 0.172540) # #inject :+ 0.100000 0.000000 0.100000 ( 0.114036) # [Finished in 5.2s]