ruan65

syntax="proto3";

message Student {
  int32 id = 1;
  string name = 2;
}

message Question {
  int32 id = 1;
  string text = 2;

ruan65

import 'dart:convert';

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

const appSupportedLocales = <Locale>[
  Locale('ru'),
  Locale('en'),
];

ruan65

def get_str_of_intervals(arr: []) -> str:
    if not arr:
        return ''
    breaks = []
    arr.sort()
    start = end = arr[0]
    for i in arr[1:]:
        diff = i - end
        if diff == 1:
            end = i

ruan65

problem solving:

• think about the big picture

• if the big picture is visual, do a sketch

• break the problem into smaller problems

• brainstorm solutions to those smaller problems

• experiment

• solve

• combine smaller solutions together for a big solution

• refine overall solution

ruan65

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

enum ImageDownloadState { Idle, GettingURL, Downloading, Done, Error }

class FirebaseStorageImage extends StatefulWidget {
  /// The reference of the image that has to be loaded.
  final StorageReference reference;
  /// The widget that will be displayed when loading if no [placeholderImage] is set.

ruan65

import 'package:flutter/material.dart';

abstract class ScreenSize {
  static Size size(BuildContext context) {
    return MediaQuery.of(context).size;
  }

  static double height(BuildContext context,
      {double dividedBy = 1, double reducedBy = 0.0}) {
    return (ScreenSize.size(context).height - reducedBy) / dividedBy;

ruan65

loginLogoutTest() {
  group('app', () {
    FlutterDriver driver;

    setUpAll(() async {
      driver = await FlutterDriver.connect();
    });

    tearDownAll(() async {
      if (driver != null) {

ruan65

import 'package:flutter/material.dart';
import 'package:someapp/commons/screen_size_helpers.dart';

class HomeScreen extends StatefulWidget {
  @override
  _HomeScreenState createState() => _HomeScreenState();
}

class _HomeScreenState extends State<HomeScreen> {
  PersistentBottomSheetController _controller;

ruan65

import 'package:flutter/material.dart';
import 'package:novoadvisor/commons/screen_size_helpers.dart';

class HomeScreen extends StatefulWidget {
  @override
  _HomeScreenState createState() => _HomeScreenState();
}

class _HomeScreenState extends State<HomeScreen> {
  PersistentBottomSheetController _controller;

ruan65

//    To put bottom sheet into Stack (close on back press)
    WidgetsBinding.instance.addPostFrameCallback((_) {
      _scaffoldKey.currentState.showBottomSheet<void>(_bottomSheetBuilder);
    });

// screen sizes
const i5s = Size(320.0, 568.0);
const i8 = Size(375.0, 667.0)

// rounded button