Re: C++ STL vectors - pointer to Vectors: do we need them?
jamaj wrote:
I'm learning STL vectors. So, excuse me for the dummy question.
Suppose that, in some function, I create a
foo()
{
vector<string> SS;
}
Is this vector deallocated at the end of the foo() function?
All[1] local objects are destroyed at the end of the function. This involves
e.g. calling a destructor, which in this case will deallocate all elements
of the vector.
If I want to pass it to some other function that will store it
somewhere, do I need to use a vector * an allocate it someway and pass
the pointer to the vector, instead the vector itself?
Yes, because you can not pass it to a function. If you pass it to a
function, the function will actually receive a copy. Similarly if you
return it from a function, the calling code will receive a copy.
Uli
[1] The only exception is local objects declared as 'static', but I'll
ignore this case.
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