Dart is there a way to measure execution time for a small code
DartDart Problem Overview
I've made some snippet involving parsing a html and wants to know if the code runs slow or not, is this doable?
Dart Solutions
Solution 1 - Dart
You can use Stopwatch to measure execution time :
Stopwatch stopwatch = new Stopwatch()..start();
doSomething();
print('doSomething() executed in ${stopwatch.elapsed}');
Dart 2:
- Type inference
- Optional
new
final stopwatch = Stopwatch()..start();
doSomething();
print('doSomething() executed in ${stopwatch.elapsed}');
Solution 2 - Dart
If you are on the web, you get can a high resolution timer:
num time = window.performance.now();
From http://api.dartlang.org/docs/releases/latest/dart_html/Performance.html#now
Solution 3 - Dart
Use devtools in profile mode for the best result
import 'dart:developer';
Timeline.startSync('interesting function');
// iWonderHowLongThisTakes();
Timeline.finishSync();
https://flutter.dev/docs/testing/code-debugging#tracing-dart-code-performance