24 Iterators library [iterators]

24.5 Iterator adaptors [predef.iterators]

24.5.2 Insert iterators [insert.iterators]

24.5.2.4 front_insert_iterator operations [front.insert.iter.ops]

24.5.2.4.3 front_insert_iterator::operator* [front.insert.iter.op*]

front_insert_iterator<Container>& operator*();

Returns: *this.