Re: STL variable scope

From:

Thomas Maeder <maeder@glue.ch>

Newsgroups:

comp.lang.c++.moderated

Date:

12 Aug 2006 07:58:57 -0400

Message-ID:

<m27j1e34dg.fsf@glue.ch>

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"jean" <jean.shu@gmail.com> writes:

[rearranged by tm]

Class A
{
     ....
}

class CMyClass
{
private:
     std::map<std::string, boost::shared_ptr<A> > m_map;
public:
     func1();
}

CMyClass::func1()
{
     std::pair< std::string, boost::shared_ptr<A> > customTagsEle;
     customTagsEle = std::make_pair( std::string((LPCTSTR)m_name),
            boost::shared_ptr<A>( new A ) );
     m_map.push_back( customTagsEle);
}

1. Does customTagsEle get destroyed when func1() exit?

Yes.

It seems not. But why not? local variable should be destroyed when
it do out of scope.

How do you come to the conclusion that it doesn't?

2.When does m_map get destroyed? Is it when CMyClass object get
destroyed?

Yes.

3. When does the class A's object get destroyed?

Please post a complete, compilable program if you want to get a
accurate answer.

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