raw_storage_iterator::operator*
A dereferencing operator used to implement the raw storage iterator expression *ii = x.
raw_storage_iterator<ForwardIterator, Type>& operator*( );
Return Value
A reference to the raw storage iterator
Remarks
The requirements for a ForwardIterator are that the raw storage iterator must satisfy require only the expression *ii = t be valid and that it says nothing about the operator or the operator= on their own. The member operators in this implementation returns *this, so that operator=(const Type&) can perform the actual store in an expression, such as *_Ptr = _Val.
Example
// raw_storage_iterator_op_deref.cpp
// compile with: /EHsc
#include <iostream>
#include <iterator>
#include <memory>
#include <list>
using namespace std;
class Int
{
public:
Int(int i)
{
cout << "Constructing " << i << endl;
x = i;
bIsConstructed = true;
};
Int &operator=(int i)
{
if (!bIsConstructed)
cout << "Not constructed.\n";
cout << "Copying " << i << endl;
x = i;
return *this;
};
int x;
private:
bool bIsConstructed;
};
int main( void)
{
Int *pInt = ( Int* ) malloc( sizeof( Int ) );
memset( pInt, 0, sizeof( Int ) ); // Set bIsConstructed to false;
*pInt = 5;
raw_storage_iterator< Int*, Int > it( pInt );
*it = 5;
}
Not constructed. Copying 5 Constructing 5
Requirements
Header: <memory>
Namespace: std