rena2019

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

// Riverpod AsyncNotifier/AsyncValue (List)

final _rng = Random();

Future<String> fetchItem(int id) async {
  await Future.delayed(Duration(milliseconds: 500 + _rng.nextInt(900)));

rena2019

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

///Riverpod AsyncValue/StateNotifier/FutureProvider (List)
/// *StateNotifier deprecated in Riverpod 3

final _rng = Random();

// Simulierter fetch für einen einzelnen Listeneintrag

rena2019

import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

// Simulierter fetch (kann auch echte HTTP-Aufrufe enthalten)
Future<String> fetchGreeting() async {
  print("FETCH");
  await Future.delayed(const Duration(seconds: 2));
  final random = DateTime.now().millisecondsSinceEpoch % 2 == 0;
  if (random) {

rena2019

class Person {
  String name;
  static int _instanceCount = 0;
  Person(this.name) {
    _instanceCount++; // Zähler erhöhen, wenn eine neue Instanz erstellt wird
  }
  static int get instanceCount => _instanceCount; // Getter für den Zähler
}

void main() {

rena2019

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

// We create a "provider", which will store a value (here "Hello world").
// By using a provider, this allows us to mock/override the value exposed.
final helloWorldProvider = Provider((_) => 'Hello world');

void main() {
  runApp(
    // For widgets to be able to read providers, we need to wrap the entire

rena2019

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(

rena2019

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.

rena2019

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override

rena2019

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.

rena2019

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'GridView mit Mindestbreite',
      home: Scaffold(