elapsed 1.0.3

Get time elapsed for asynchronous function in a single line of code.

example/README.md

Get time elapsed for asynchronous function in a single line of code.

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Examples

Pay attention to the elapsed(...) method calls below. That's the core of this library.

Basic

• The getSum(...) function mocks Future with a delay of 2.5s

• The result of future is accessible in .result property. In this case, it's the sum of two numbers.

• This example uses .inSeconds time property. Just as the name suggests, it represents the time elapsed in seconds.

    import 'package:elapsed/elapsed.dart';
  
    void main() async {
      var data = await elapsed(getSum(3, 8));
      print(data.result); // prints "11" .
      print('${data.inSeconds} seconds'); // prints "2.5 seconds" .
    }
  
    Future<int> getSum(int a, int b) async {
      await Future.delayed(Duration(milliseconds: 2500));
      return a + b;
    }
  

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Future<void>

• Both futures with return types and plain void is supported by this library.

• This time the Future is mocked with 3 seconds delay.

    import 'package:elapsed/elapsed.dart';
  
    void main() async {
      var data = await elapsed(divide(10, 2));
      print('${data.inSeconds} seconds'); // prints "3.0 seconds" .
    }
  
    Future<void> divide(int a, int b) async {
      await Future.delayed(Duration(milliseconds: 3000));
      print(a / b); // prints "5.0"
      // no return value...
    }
  

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HTTP Request->Response

• Of course, this works too!

• This example will actually call an HTTP api resource.

• Using jsonplaceholder.

• The code wraps it inside elapsed(...) instead of directly awaiting http.get(...).

    import 'package:elapsed/elapsed.dart';
    import 'package:http/http.dart' as http;
  
    void main() async {
      var response = await getSampleREST('https://jsonplaceholder.typicode.com/posts/1');
      print(response.body); // prints JSON data from the api.
    }
  
    Future<http.Response> getSampleREST(String url) async {
      var data = await elapsed(http.get(url)); // HTTP REST example.
      print('${data.inSeconds} seconds'); // seconds printed depends on internet speed.
      print(data.result.statusCode); // prints "200" .
      return data.result;
    }