andrewackerman

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  final questions = [

andrewackerman

typedef T2 Adder<T1, T2>(T1 left, T1 right);

class AddMachine<A> {
  A left;
  A right;
  
  AddMachine(this.left, this.right);
  
  B Sum<B>(Adder<A, B> adder) {
    print([A, B]);

andrewackerman

typedef T2 Foo2<T1, T2>(T1);
typedef T3 Foo3<T1, T2, T3>(T1, T2);

class Bar<A> {
  final List<A> outer;
  Bar(this.outer);
  
  void run<B, C, D>(
    List<B> inner,
    Foo2<A, C> outerSelector,

andrewackerman

// Widget class

@override initState() {
  AppStateBloc.stream.listen(updateWidget); // Subscribe to the state stream
}

void updateWidget(AppState obj) {
  setState(() {}); // Trigger rebuild
}