Dart is there a way to measure execution time for a small code

I've made some snippet involving parsing a html and wants to know if the code runs slow or not, is this doable?

25326 次浏览

小开

最佳答案

You can use Stopwatch to measure execution time :

Stopwatch stopwatch = new Stopwatch()..start();
doSomething();
print('doSomething() executed in ${stopwatch.elapsed}');

Dart 2:

final stopwatch = Stopwatch()..start();
doSomething();
print('doSomething() executed in ${stopwatch.elapsed}');

小开

If you are on the web, you get can a high resolution timer:

num time = window.performance.now();

小开

Use devtools in profile mode for the best result

import 'dart:developer';


Timeline.startSync('interesting function');
// iWonderHowLongThisTakes();
Timeline.finishSync();