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🧙‍♂️ O Mago do Flutter 🪄 ulisseshen

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ulisseshen / main.dart
Created October 8, 2025 14:50
POC para mostrar o use de MediaQuery.of vs MediaQuery.sizeOf com o use de construtores const e não const.
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: TestScreen(),
);
@ulisseshen
ulisseshen / app_spacing.dart
Created May 22, 2025 14:10
/// -----------------------------------------------------------------------------
/// AppSpacing
///
/// Classe utilitária para padronização de espaçamentos na aplicação, promovendo
/// consistência visual e facilitando a manutenção do layout.
///
/// Autor: Ulisses Hen - Mago do Flutter 🧙‍♂️
/// -----------------------------------------------------------------------------
class AppSpacing {
@ulisseshen
ulisseshen / main.dart
Created March 5, 2025 14:50
POC necessário para mostrar o erro [ Null check operator used on a null value] que só aparece em RELEASE
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'dart:async';
void main() {
// Initialize our error logger before running the app.
ErrorLogger.initialize();
runApp(MyApp());
}
@ulisseshen
ulisseshen / main.dart
Last active February 28, 2025 21:35
import 'package:flutter/material.dart';
import 'dart:async';
void main() {
runApp(MyApp());
}
class CallbackManager {
@ulisseshen
ulisseshen / main.dart
Created January 31, 2025 21:00
void main() async {
print('A');
printsync();
print('G');
}
void printsync() async {
print('B');
@ulisseshen
ulisseshen / main.dart
Last active January 29, 2025 20:27
void main() async {
print('A');
await Future(() {
print('B');
Future(() => print('C'));
Future.microtask(() => print('D'));
Future(() => print('E'));
print('F');
});
@ulisseshen
ulisseshen / dynamic_x_object.dart
Created January 28, 2025 15:27
void main() {
Object obj = "Hello";
print((obj as String).length);
obj = 10;
print((obj as int).isEven);
@ulisseshen
ulisseshen / column_stretch.dart
Last active June 6, 2024 04:19
import 'package:flutter/material.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
@ulisseshen
ulisseshen / dinamic_baldes_desperdicio.dart
Created May 18, 2024 02:31
import 'dart:collection';
void main() {
final baldes = [Balde(3), Balde(5)];
const int litrosDesejado = 4;
final resultado = medirAgua(baldes, litrosDesejado);
if (resultado != null) {
for (var passo in resultado.caminho) {
@ulisseshen
ulisseshen / blades_dinamicos.dart
Created May 18, 2024 02:27
import 'dart:collection';
void main() {
final baldes = [Balde(3), Balde(5)];
const int litrosDesejado = 4;
final resultado = medirAgua(baldes, litrosDesejado);
if (resultado != null) {
for (var passo in resultado) {