sna2021

import 'dart:async';

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

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

//WIDGETS

sna2021

// 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 {
  @override

sna2021

import 'package:flutter/material.dart';

//TODO: реализовать hero анимацию при выборе элемента

final urls = [
  'https://www.thecocktaildb.com/images/media/drink/rrtssw1472668972.jpg',
  'https://www.thecocktaildb.com/images/media/drink/xtuyqv1472669026.jpg',
  'https://www.thecocktaildb.com/images/media/drink/wwpyvr1461919316.jpg',
  'https://www.thecocktaildb.com/images/media/drink/ywxwqs1461867097.jpg',
  'https://www.thecocktaildb.com/images/media/drink/vqyxqx1472669095.jpg',

sna2021

import 'package:flutter/material.dart';

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

class CustomRouteSample extends StatelessWidget {
  @override

sna2021

import 'package:flutter/material.dart';

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

class RootScreen extends StatefulWidget {
  @override

sna2021

//  MaterialPageRoute(
//   builder: (context) => ..., 
//   settings: RouteSettings(arguments: ...,name: ...))

import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(
    onGenerateRoute: (settings) {
      //todo реализовать открытие TitlePage

sna2021

//  MaterialPageRoute(
//   builder: (context) => ..., 
//   settings: RouteSettings(arguments: ...,name: ...))

import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(
    onGenerateRoute: (settings) {
      //todo реализовать открытие TitlePage

sna2021

Future<void> main() async {
    final future1 = Future.delayed(Duration(milliseconds: 100)).then((value) => throw 'error');
    final future2 = future1.then((value) {}).catchError((e){
      print('future2 error: ${e}');
    });

    final future3 = future2.then((value) {},onError: (e){
      print('future3 onError: ${e}');
    }).catchError((e){
      print('future3 error: ${e}');

sna2021

import 'package:flutter/material.dart';

void main() => runApp(MaterialApp(
      home: ClipSamplePage(),
    ));


class ClipSamplePage extends StatefulWidget {
  @override
  _ClipSamplePageState createState() => _ClipSamplePageState();

sna2021

import 'dart:collection';


void main() {

// при использовании growable мы только запрещаем операции которые влияют на размер списка.
// но нам все так же доступна операция set  
final nonGrowableList = [1,2,3].toList(growable:false);
nonGrowableList[0] = 4;
//nonGrowableList.remove(0);// - будет ошибка