Example: Ruby Benchmark

benchmark.rb

require 'benchmark'

Benchmark.bm do |b|

	b.report "summation equation" do
		sum = 1_000_000*(1_000_000+1)/2.to_f
	end

	b.report "each loop" do
		sum = 0
		(1..1_000_000).each { |n| sum += n }
	end

	b.report "for loop" do
		sum = 0
		for n in 1..1_000_000
			sum += n
		end
	end

end