C / C++ / MFC

void MyFunc( CArray(int, int)& array) {...}
...
CArray<int, int> myArray;
myArray.Add(1);
myArray.Add(111);
MyFunc(myArray);

void MyFunc( CArray(int, int)* pArray) {...}
...
CArray<int, int> myArray;
myArray.Add(1);
myArray.Add(111);
MyFunc(&myArray);

// Read/write access 1 (by reference)
void f1(TaskArray& tasks)
{
}
 
// Read/write access 2 (by pointer - my preferred way)
void f2(TaskArray* pTasks)
{
   ASSERT(pTasks);
}
 
// Read-only access
void f3(const TaskArray& tasks)
{
}

TaskArray tasks;
 
f1(tasks);   // read/write access (by reference)
f2(&tasks);  // read/write access (by pointer -- easier to spot)
f3(tasks);   // read-only access (by const reference, which looks just like f1).

CSomeClass& CSomeClass::operator=(const CSomeClass& source)
{
	m_name=source.m_name;

	LOGFONT lf;
	(const_cast<CFont&>(static_cast<const CFont&> (source.m_font)).GetLogFont(&lf)); //this is the important line
	m_font.Detach();
	m_font.CreateFontIndirect(&lf);

	//...

	return *this;
}