triangletodd · September 23, 2016 20:33
diff --git a/benchmark_tr_vs_gsub.rb b/benchmark_tr_vs_gsub.rb
 #!/usr/bin/env ruby
 require 'benchmark/ips'

 SLUG = 'writing-fast-ruby'

 def slow
  SLUG.gsub('-', ' ')
 end

 def fast
  SLUG.tr('-', ' ')
 end

 Benchmark.ips do |x|
  x.report('String#gsub') { slow }
  x.report('String#tr')   { fast }
  x.compare!
 end
	#!/usr/bin/env ruby
	require 'benchmark/ips'

	SLUG = 'writing-fast-ruby'

	def slow
	SLUG.gsub('-', ' ')
	end

	def fast
	SLUG.tr('-', ' ')
	end

	Benchmark.ips do \|x\|
	x.report('String#gsub') { slow }
	x.report('String#tr') { fast }
	x.compare!
	end