dart - Dart 隔离 SendPort 和 ReceivePort 发送 100 次，反之亦然

Question

我的main作品，但在我的作品中，foo我想将数据发送到 main. 这是我的代码，我想在其中传递100 次之间foo的数据。main我怎样才能做到这一点？

import 'dart:isolate';  
import 'dart:async';
void foo(SendPort sendPort) async {
  ReceivePort receivePort = new ReceivePort();
  sendPort.send(receivePort.sendPort);
      receivePort.listen((dataSend){
      print('foo  received : ${dataSend}');
      print('');
    });
}
void main() async {
      int temp = 0;
      ReceivePort receivePort = new ReceivePort(); 
      Isolate.spawn(foo,receivePort.sendPort);  
      receivePort.listen((dataSend) {   
      print('I received : ${dataSend}');      
      dataSend.send(temp+1);  
      });   
}

Answer 1

我真的很困惑你想要实现什么，但它是这样的吗？

import 'dart:isolate';
import 'dart:async';

void foo(SendPort sendPort) async {
  ReceivePort receivePort = new ReceivePort();
  sendPort.send(receivePort.sendPort);
  receivePort.listen((dataSend) {
    print('foo  received : ${dataSend}');
    sendPort.send(receivePort.sendPort);
  });
}

void main() async {
  int temp = 0;
  ReceivePort receivePort = new ReceivePort();
  Isolate.spawn(foo, receivePort.sendPort);
  receivePort.listen((dataSend) {
    print('I received : ${dataSend}');
    if (++temp < 100) {
      dataSend.send(temp);
    } else {
      receivePort.close();
    }
  });
}