MariaMelnik

import 'package:flutter/material.dart';

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

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

class MyApp extends StatelessWidget {
  @override

MariaMelnik

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

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

MariaMelnik

import 'package:async/async.dart';

void main() async  {
  final cancellableOperation = CancelableOperation.fromFuture(operation());
  cancellableOperation.then((p0) => print('cancelable operation finished normally'),
      onCancel: () => print('cancelable operation was canceled'));
  await Future.delayed(Duration(seconds: 1)).then((_) {
    cancellableOperation.cancel();
    print('operation cancelled');
  });

MariaMelnik

// 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

MariaMelnik

void main() {
  final inter = 23.96;
  final minVal = 23.6;
  
  final list1 = List.generate(5, (i) => minVal + i * inter);
  print(list1);
  
  int i = 0;
  double val = minVal;
  

MariaMelnik

void main() {
  final fib = fibStream();
  print(fib.take(10));
}

Iterable<int> fibStream() sync* {
  final firstIt = fromList([0]).followedBy(fibStream());
  final secondIt = fromList([0,1]).followedBy(fibStream());;
  yield* zipWith(sumInt, firstIt, secondIt);
}

MariaMelnik

import 'package:meta/meta.dart';

void runner() {
  try {
    repository();
  } on RepositoryException catch (error, stackTrace) {
    // Usually here you not only can log it but show some meaningfull information
    // based on [RepositoryException.type]. So you don't even need to know how works             // repository inside.
    print('error: $error\nStackTrace:$stackTrace');
  }

MariaMelnik

import 'package:flutter/widgets.dart';
import 'new_sb_base.dart';

class MyStreamBuilder<T> extends MyStreamBuilderBase<T, AsyncSnapshot<T>> {
  /// Creates a new [MyStreamBuilder] that builds itself based on the latest
  /// snapshot of interaction with the specified [stream] and whose build
  /// strategy is given by [builder].
  ///
  /// The [initialData] is used to create the initial snapshot.
  ///

MariaMelnik

import 'dart:async';

import 'package:flutter/material.dart';

abstract class MyStreamBuilderBase<T, S> extends StatefulWidget {
  /// Creates a [MyStreamBuilderBase] connected to the specified [stream].
  const MyStreamBuilderBase({ Key key, this.stream }) : super(key: key);

  /// The asynchronous computation to which this builder is currently connected,
  /// possibly null. When changed, the current summary is updated using

MariaMelnik

import 'dart:async';

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({Key key}) : super(key: key);