BloombergLP::bdlc::FlatHashMap::erase

Remove from this map the elements starting at the specified first position up to, but not including, the specified last position, and return an iterator referencing the same element as last. This method invalidates all iterators and references to the removed elements. The behavior is undefined unless first and last are valid iterators on this map, and the first position is at or before the last position in the iteration sequence provided by this container.