我应该清理 ivar C++向量...？

发布于 2024-10-27 18:43:50 字数 175 浏览 2 评论 0原文

如果将向量放入堆栈中，它将在其自动变量作用域结束时自动销毁。

如果我将向量放入类中怎么办？

class A
{
    vector<B> bs;  // B is POD struct.
};

我应该手动清理它吗？如果是这样，我该怎么办？

原文

If a vector is placed in stack, it will be destructed automatically at the end of its automatic variable scope.

What if I have placed a vector in a class?

class A
{
    vector<B> bs;  // B is POD struct.
};

Should I clean it up manually? If so, how should I do?

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古镇旧梦 2024-11-03 18:43:50

当调用封闭类的析构函数（即 A 的析构函数）时，该向量 bs 将被破坏。

void f()
{
    {
          A a;
          //working with a;

    }//<--- here a goes out of scope, so it's destructor is called; 
            //so not only a is destructed but also a.bs
}

That vector bs will be destructed when the enclosing class's destructor (i.e A's destructor) will be called.

void f()
{
    {
          A a;
          //working with a;

    }//<--- here a goes out of scope, so it's destructor is called; 
            //so not only a is destructed but also a.bs
}

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