filiph

// Generics for Beginners playground.

void main() {
  var pants = Clothing(weight: 300);
  var shirt = Clothing(weight: 200);

  var satchel = Bag([pants, shirt]);
  print(satchel.runtimeType);

  var apple = Food(weight: 70, calories: 95);

filiph

class Viscosity {}

class Material {
  Future<Viscosity> computeViscosity() async {
    return Viscosity();
  }
}

class Goo {
  late Viscosity v;

filiph

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';

void main() {
  LicenseRegistry.addLicense(() async* {
    yield LicenseEntryWithLineBreaks(
      ['my_package'],
      'Blah blah.',
    );
  });

filiph

import 'dart:async';

/// This service logs via [print]. Ugh.
void runMisbehavingService() async {
  print('Starting service...');
  await Future.delayed(const Duration(milliseconds: 100));
  print('... started.');
}

filiph

import 'dart:math';

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(

filiph

import 'dart:math';

import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {

filiph

import 'package:flutter/material.dart';
import 'dart:ui' as ui;

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',

filiph

import 'dart:math';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

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

class MapPainter extends CustomPainter {
  final Set<_Vector2> _points;

filiph

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      home: MyHomePage(),

filiph

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Perception is Everything',
      home: MyHomePage(),