mdavalos1993

class Singleton {
    // singelton pattern
    private static var privateShared : Singleton?
    
    class func shared() -> Singleton {
        
        // make sure we get an instance from the singleton queue
        guard let uwShared = read(privateShared) else {
            privateShared = Singleton()
            return privateShared!

mdavalos1993

// No Security

{
  "rules": {
    ".read": true,
    ".write": true
  }
}

mdavalos1993

import 'package:flutter/material.dart';

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

class TestApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
        primaryColor: Colors.green[900],

mdavalos1993

<?xml version="1.0" encoding="utf-8"?>
<resources>

<!-- google's material design colours from 
http://www.google.com/design/spec/style/color.html#color-ui-color-palette -->

    <!--reds-->
    <color name="md_red_50">#FFEBEE</color>
    <color name="md_red_100">#FFCDD2</color>
    <color name="md_red_200">#EF9A9A</color>