chalin

# Clicking on each link yields:
number.value => '' 
number.valueAsNumber => NaN 
number.valueAsDate => Exception: NullError: Cannot call "getTime" on null 
date.value => '' 
date.valueAsNumber => NaN 
date.valueAsDate => Exception: NullError: Cannot call "getTime" on null 
time.value => '' 
time.valueAsNumber => NaN 
time.valueAsDate => Exception: NullError: Cannot call "getTime" on null 

chalin

import 'dart:html';

void main() {
  var div = document.createElement('div');
  print('1. div.style.fontSize = ${div.style.fontSize}');
	div.style.fontSize = "120%";
  print('2. div.style.fontSize = ${div.style.fontSize}');
  /*
   * div.style[] results in warning: 
   * The operator '[]=' is not defined for the class 'CssStyleDeclaration'.

chalin

main() => print(new Object() == new Object());

chalin

void main() {
  thingsTodo().forEach(print);
}

Iterable<String> thingsTodo() sync* {
	var actions = ['Walk', 'Wash', 'Feed'];
	var pets = ['cats', 'dogs'];
  
  for (var action in actions) {
    for (var pet in pets) {

chalin

typedef FooOrig<T>(T a);
typedef FooNew1 = T Function<T>(T a);
typedef FooNew2<T> = T Function(T a);
typedef FooNew3<T> = T Function<T>(T a);

// DECLARATION             // STATIC TYPE
FooOrig vf_orig0;          // (dynamic) → dynamic
FooOrig<int> vf_orig1;     // (int) → dynamic
T Function<T>(T a) vf_new; // <T>(T) → T
FooNew1 vf_new1a;          // <T>(T) → T

chalin

void main() {
  var list = ['apples', 'bananas', 'oranges'];
  list.forEach((item) {
    print('${list.indexOf(item)}: $item');
  });
}

chalin

// Copyright (c) 2013, 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 'dart:async';

printDailyNewsDigest() async {
  String news = await gatherNewsReports();
  print(news);
}

chalin

// Copyright (c) 2013, 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 'dart:async';

printDailyNewsDigest() {
  final future = gatherNewsReports();
  future.then((news) => print(news));
}

chalin

main () {
  List<dynamic> strings = ["not", "ints"];
  List<int> numbers = strings; // <- strong mode error?
  for (var number in numbers) {
    print(number - 10); // <— Boom!
  }
}

chalin

// Copyright (c) 2015, 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 'dart:async';

Future<int> sumStream(Stream<int> stream) async {
  var sum = 0;
  try {