是“删除这个"吗?在 C++ 中允许吗?

Is quot;delete thisquot; allowed in C++?(是“删除这个吗?在 C++ 中允许吗?)

问题描述

是否允许 delete this; 如果删除语句是将在类的该实例上执行的最后一条语句?当然，我确信 this 指针所代表的对象是 newly-created.

Is it allowed to delete this; if the delete-statement is the last statement that will be executed on that instance of the class? Of course I'm sure that the object represented by the this-pointer is newly-created.

我正在考虑这样的事情:

I'm thinking about something like this:

void SomeModule::doStuff()
{
    // in the controller, "this" object of SomeModule is the "current module"
    // now, if I want to switch over to a new Module, eg:

    controller->setWorkingModule(new OtherModule());

    // since the new "OtherModule" object will take the lead, 
    // I want to get rid of this "SomeModule" object:

    delete this;
}

我可以这样做吗?

推荐答案

C++ FAQ Lite 有一个专门针对此的条目

The C++ FAQ Lite has a entry specifically for this

• https://isocpp.org/wiki/faq/freestore-mgmt#删除-这个

我觉得这句话总结得很好

I think this quote sums it up nicely

只要你小心，一个对象自杀是可以的(删除这个).

As long as you're careful, it's OK for an object to commit suicide (delete this).

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