roipeker

void main(List<String> arguments) {
  var a1 = Storage();
  var a2 = Storage();
  print(a1.hashCode);
  print(a2.hashCode);
  print(a1==a2);
}

class Storage {
  static final Storage _singleton = Storage._internal();

roipeker

import 'dart:math';
import 'package:intl/intl.dart';

void main(List<String> arguments) {
  // Intl.defaultLocale = 'es_AR';
  Intl.defaultLocale = 'en_US';

  //  Should be calculated only on locale change to modify the separators.
  // -- start static implementation.
  var base = NumberFormat.currency(decimalDigits: 1, symbol: '');

roipeker

Future<void> main(List<String> arguments) async {
  var a = Contacto('Mati');
  var b = Contacto('Mati');
  print('Contact son iguales? ${a == b}'); // false

  var a2 = const Contacto('Mati');
  var b2 = const Contacto('Mati');
  print('const Contact son iguales? ${a2 == b2}'); // true

  var a3 = Contacto2('Mati');

roipeker

// roipeker©2020
// demo codepen : https://codepen.io/roipeker/pen/oNbXRQz
// demo web     : https://dev.roipeker.website/flutter_demos/textcontroller_currency/

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

void main() {

roipeker

// roipeker 2020
// sample using ValueBuilder. Generic Dropdown wrapper with basic styling.

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

class CommonDropDown<T> extends StatelessWidget {
  
  final double height;
  final List<T> listData;

roipeker

// roipeker 2020.

// Challenge from 
// https://www.youtube.com/watch?v=HjJHO0NXI10&feature=share
//
// Demo screencast (macOS):
// https://giphy.com/gifs/WoG8316gEYY2EC1KRA


// Key code to use a shader mask in the widget tree:

roipeker

import 'dart:convert';
import 'package:get/get.dart';
import 'package:http/http.dart' as http;

class PostController extends GetxController {
  final _postList = <PostModel>[].obs;
  List<PostModel> get postList => _postList.value;

  final _isLoading = false.obs;
  bool get isLoading => _isLoading.value;

roipeker

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

class SampleTodoDemo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return GetMaterialApp(
      home: TodoPage(),
    );
  }

roipeker

class AppGetUtils {
  static bool isPreloading = false;

  static Future<void> hidePreloader() async {
    if (!isPreloading) return;
    isPreloading = false;
    if (!Get.isSnackbarOpen) {
      Get.close(1);
    }
  }

roipeker

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

class SampleBottomNavDemo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return GetMaterialApp(
      themeMode: ThemeMode.dark,
      debugShowCheckedModeBanner: false,
      theme: ThemeData.light(),