A common requirement when working with maps is to: Update the value if a given key already exists Set the value if it doesn't You may be tempted to implement some conditional logic to handle this: class ShoppingCart { final Map<String, int> items = {}; void add(String key, int quant...
How to Create a Dating App: 7 Steps Plan To help you find the most appropriate approach to successful dating app development, here is a 7-step roadmap that may come in handy: Step 1. Define your niche Before creating a dating app from scratch, it’s very important to define the exact...
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main.dart import 'dart:convert'; class User { final String name; final String occupation; User(this.name, this.occupation); User.fromJson(Map<String, dynamic> m) : name = m['name'], occupation = m['occupation']; Map<String, dynamic> toJson() => { 'name': name, 'occupation': ...
find_all.dart import 'dart:io'; import 'package:xml/xml.dart'; void main() async { var file = new File('books.xml'); String data = file.readAsStringSync(); var xdoc = XmlDocument.parse(data); var books = xdoc.findAllElements('book'); books .map((e) => e.text.trim()....
import'package:flutter_facebook_login/flutter_facebook_login.dart';import'package:google_sign_in/google_sign_in.dart'; Now, we’re going to have two independent parts that are going to take care of our authentication flow. The first one is going to initiate either a Facebook or Google sig...
Create a new Flutter project. flutter create mrzscanner Add the following dependencies to the pubspec.yaml file. dependencies: flutter: sdk: flutter flutter_ocr_sdk: ^1.1.2 cupertino_icons: ^1.0.2 image_picker: ^1.0.0 shared_preferences: ^2.1.1 camera: ^0.10.5+2 camera_windows: git...
create anenv.dartfile and define theEnvclass with one field for each API key, usingobfuscate: true run the code generator add theenv.g.dartfile to.gitignore importenv.dartand read the API key as needed For an example that uses this approach, check my movies app on GitHub: ...
What are the names of Toothless' offspring in the How to Train Your Dragon franchise? Toothless, the beloved dragon from the How to Train Your Dragon franchise, has three offspring; Dart, Ruffrunner, and Pouncer. These young dragons, known as the Night Lights, are a delightful mix of their...
Understanding the early warning signs of a crisis is a good start. That said, you might still struggle if you’re simply reacting to a crisis on the fly. This tends to add even more stress as you navigate the situation. Instead, establish preparato...