If a key equivalent to the specified key already exists in this map, return an iterator referring to the existing item. Otherwise, insert into this map a newly-created value_type object, constructed from from key and the specified args, and return an iterator referring to the newly-created entry. Use the specified hint as a starting point for checking to see if the key already in the map. This method requires that the (template parameter) types KEY and VALUE are emplace-constructible from key and args respectively. For C++03, VALUE must also be copy-constructible.
Declared in <bslstl_map.h>
template<class... Args>
map<KEY, VALUE, COMPARATOR, ALLOCATOR>::iterator
try_emplace(
const_iterator hint,
KEY const& key,
Args&&... args);