dpossas

import 'dart:math';

import 'package:flutter/material.dart';

//Colors
Color crossColor = const Color(0xFF1ABDD5);
Color circleColor = const Color(0xFFD8B9FA);
Color accentColor = const Color(0xFF90A4AE);

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

dpossas

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

///Author: Douglas Bezerra Possas
///Contact: douglasbpossas@gmail.com
///Gist: https://gist.github.com/dpossas/457c1429931f06e1f5d3cf64cb019408
///GitHub: https://github.com/dpossas/flutter-whatsapp/

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

dpossas

void main() {
  Bag bag = Bag(items: []);
  print('Total: ${bag.total}');
  
  Product p1 = Product(name: 'Pen', price: 1.15);
  print('Total: ${bag+p1}');
  
  Product p2 = Product(name: 'Pencil', price: 2);
  print('Total: ${bag+p2}');
}

dpossas

void main() {
  for (int i = 0; i < 5; i++) {
    print('Olá mundo #${i + 1}');
  }
}

dpossas

void main() {
  List historico_diagnostico = [
    {
      "Deep Security": [
        [9, 73.33],
        [10, 56.34]
      ]
    },
    {
      "Apex One": [

dpossas

void main() {
 print("Olá!");
}

dpossas

void main() {
  print("===================== NOME");

  var nome; //valor padrao null
  print(nome.runtimeType); //tipo inicial Null (objeto Null)
  print(nome == null); //validade inicial
  print(nome == Null); //Null != null
  print(nome is Null); //Objeto Null

  nome = "Douglas";

dpossas

import 'package:flutter/material.dart';

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

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

class MyApp extends StatelessWidget {
  @override

dpossas

{
        "CarMetaID": 102123,
        "CarOrderNumber": "2",
        "TotalItems": 10,
        "Title": "CHRYSLER PACIFICA",
        "ToyNumber": "GHD84",
        "CarMetaSEOName": "chrysler-pacifica",
        "CategoryId": null,
        "MiniCollectionId": 1247,
        "MiniCollection": "BAJA BLAZERS",

dpossas

class Product { 
 // Attributes with private privacy level 
 int _id; 
 String _title; 
 bool _active; 
 double _price;
  
 // Function definition like a constructor
 Product(this._title, this._active, this._price);