Files
2026-07-13 12:42:18 +08:00

43 lines
664 B
Dart

import 'dart:async';
import 'package:flutter/material.dart';
abstract class Animal {
String get name;
void speak();
}
mixin SwimmingMixin {
void swim() => print('swimming');
}
enum PetType { dog, cat, bird }
class Dog extends Animal with SwimmingMixin {
final String name;
final PetType type;
Dog(this.name) : type = PetType.dog;
@override
void speak() {
print('Woof! I am $name');
}
Future<void> fetch(String item) async {
await _run();
print('Fetched $item');
}
void _run() {
print('running');
}
static Dog create(String name) {
return Dog(name);
}
}
Dog createDog(String name) {
return Dog(name);
}