Creates a Stopwatch in stopped state with a zero elapsed count.
The following example shows how to start a Stopwatch immediately after allocation.
var stopwatch = new Stopwatch()..start();
Stopwatch() { if (_frequency == null) _initTicker(); }
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.5.0/dart-core/Stopwatch/Stopwatch.html