raw_storage_iterator::operator=

Assignment operator used to implement the raw storage iterator expression *i = x for storing in memory.

raw_storage_iterator<ForwardIterator, Type>& operator=(
   const Type& _Val
);

Parameters

• _Val
  The value of the object of type Type to be inserted into memory.

Return Value

The operator inserts _Val into memory, and then returns a reference to the raw storage iterator.

Remarks

The requirements for a ForwardIterator state 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. These member operators return *this.

The assignment operator constructs the next object in the output sequence using the stored iterator value first, by evaluating the placement new expression new ( (void *)&*first) Type(_Val).

Example

// raw_storage_iterator_op_assign.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

See Also

Reference

raw_storage_iterator Class

Other Resources

raw_storage_iterator Members