cpp/iterator/ostream iterator/operator=

Inserts into the associated stream, then inserts the delimiter, if one was specified at construction time.

If is a pointer to the associated std and  is the delimiter specified at the construction of this object, then the effect is equivalent to

Example
cpp/iterator/ostream iterator/operator= cpp/iterator/ostream iterator/operator= cpp/iterator/ostream iterator/operator= cpp/iterator/ostream iterator/operator= cpp/iterator/ostream iterator/operator= cpp/iterator/ostream iterator/operator= cpp/iterator/ostream iterator/operator= cpp/iterator/ostream iterator/operator=