Isolate Wait Then in Dart. Sometimes called Fork/Join

ParallelIsolateExample.dart

#import('dart:isolate', prefix:'isolate');

costlyQuery() {
  isolate.port.receive((msg, reply) => reply.send("costly"));
}

expensiveWork() {
  isolate.port.receive((msg, reply) => reply.send("expensive"));
}

lengthyComputation() {
  isolate.port.receive((msg, reply) => reply.send("lengthy"));
}

void main() {
  Futures.wait([
    isolate.spawnFunction(costlyQuery).call(""),
    isolate.spawnFunction(expensiveWork).call(""),
    isolate.spawnFunction(lengthyComputation).call(""),
  ]).then((values) => print(values));
  
  // prints [costly, expensive, length]
}