Hack to Learn

A few people have asked me for the module I’ve been using to profile my code in my “Double Quotes vs. Single Quotes”:/2008/06/10/ruby-performance-use-double-quotes-vs-single-quotes article. It is merely a wrapper around “RubyProf”:http://ruby-prof.rubyforge.org/, dead simple and nothing worth commenting on, but since some keep asking – here it is:

require 'rubygems'
require 'ruby-prof'

module PeepcodeProfiler
  def time_this(comment, &block)
    RubyProf.measure_mode = RubyProf::PROCESS_TIME
    RubyProf.start
    yield
    result = RubyProf.stop
    puts "\nTimings for #{comment}"
    printer = RubyProf::FlatPrinter.new(result)
    printer.print(STDOUT, 0)
  end
end

I wrote this for some work on a “Scaling Rails” minibook for “Peepcode”:http://peepcode.com/, which I seem to be unable to finish. I hope Geoffrey forgives me.