Constructor initializer list

最新推荐文章于 2024-04-26 20:32:12 发布

原创最新推荐文章于 2024-04-26 20:32:12 发布 · 275 阅读

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本文通过具体的C++代码示例，探讨了构造函数在不同类中的使用方式及其可能引发的问题，特别是当没有使用初始化列表时构造函数可能会被无意中调用两次的情况。

https://www.youtube.com/watch?v=1nfuYMXjZsA from this url

let's demonstrate something that really matters

	class Entity
{
public:

	Entity() 
	{
		std::cout << "wtf" << std::endl;
	}
	Entity(int x)
	{
		std::cout << x << std::endl;
	}
};

	class SecondEntity
	{
	private:
		int x;
		std::string str;
		Entity sb;
	public:
		SecondEntity()
			{
			x = 1;
			sb = Entity(12312);// over here  we got a problem  that 's  without the initializer list we could construct the sb twice .the first time is in the Entity one ;the second time is in the blanket
		}
	};