一个想法：
public abstract class Fruit<T>
where T : Fruit<T>, new()
{
public static T CreateInstance()
{
T newFruit = new T();
newFruit.Initialize(); // Calls Apple.Initialize
return newFruit;
}
protected abstract void Initialize();
}
public class Apple : Fruit<Apple>
{
protected override void Initialize() { ... }
}
像这样调用：
Apple myAppleVar = Fruit<Apple>.CreateInstance();
无需额外的工厂课程。
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