benchmark

convenient benchmark

在 ~/.irbrc
<br />def benchmark<br /> cur = Time.now<br /> result = yield<br /> print "#{cur = Time.now - cur} seconds"<br /> puts " (#{(cur / $last_benchmark * 100).to_i - 100}% change)" rescue puts ""<br /> $last_benchmark = cur<br /> result<br />end<br />
就可以在consloe 輕鬆的做benchmark
>> benchmark{ User.find(2).records.wake.count}
0.00197 seconds (-1% change)