std::queue initialization with NULL

Question

Is it possible to initialize a C++ std::queue with a NULL value like other variables?

Like this:

HANDLE variable = NULL; 

class Test
{
}

i.e.

std::queue<Test*> testQueue = NULL;

or

testQueue.empty();

or something like that?

Answer 1

If you write this:

std::queue<Test*> testQueue; //it is default initialized

then that is enough; no need to make it pointer and initialized it with NULL.

Also, you can do this:

if ( testQueue.empty()) 
{
    //testQueue is empty
}