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# edit $HOME/.bash_profile or $HOME/.bashrc.
# macOS Catalina uses the Z shell by default, so edit $HOME/.zshrc
# source $HOME/.<rc file> to refresh the current window
# Verify that the flutter/bin directory is now in your PATH by running: echo $PATH
# Verify that the flutter command is available by running: which flutter

# iOS setup
sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer
sudo xcodebuild -runFirstLaunch
open -a Simulator

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return: padding: const EdgeInsets.all(8.0),
      child: Table(
          columnWidths: {0: IntrinsicColumnWidth()},
          defaultVerticalAlignment: TableCellVerticalAlignment.middle,
          children: [
            TableRow(
              children: [
                Padding(
                  padding: const EdgeInsets.all(8.0),
                  child: Icon(

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void main() {
  ui.platformViewRegistry.registerViewFactory(
      'hello-world-html',
      (int viewId) => IFrameElement()
        ..width = '640'
        ..height = '360'
        ..src = 'https://www.youtube.com/embed/IyFZznAk69U'
        ..style.border = 'none');

  runApp(Directionality(

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  SystemChrome.setPreferredOrientations([DeviceOrientation.portraitUp])
      .then((_) {
    runApp(new MyApp());
  });

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import 'dart:convert';

import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(
    home: MyApp(),
  ));
}

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# to view current channel
flutter channel

# Now with Flutter 1.9
flutter channel master
flutter upgrade
flutter config --enable-web

cd <into project directory>

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import 'package:flutter/material.dart';

final Color darkBlue = Color.fromARGB(255, 18, 32, 47);

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override

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//play loop infinite
Image.network('https://example.com/animated-image.gif')

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

void main() {
  runApp(new MyApp());
}

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//=========================
//Use toSet and then toList

var ids = [1, 4, 4, 4, 5, 6, 6];
var distinctIds = ids.toSet().toList(); //[1, 4, 5, 6]

//=========================
isEven(x) => x % 2 == 0;

main() {

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import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: App(),