Read-modify-write cursor configuration helper class.
Used by each begin() function of all containers.
| Member | Description | 
|---|---|
| operator= | 
    Assignment operator.  | 
            
| operator== | 
    Equality comparison.  | 
            
| read_modify_write | 
    Call this function to tell the container's begin() function that you need a read-modify-write iterator.  | 
            
| no_read_modify_write | 
    Call this function to tell the container's begin() function that you do not need a read-modify-write iterator.  |