If a key equivalent to the specified key already exists in this unordered_map, return an iterator referring to the existing item. Otherwise, insert into this map a newly‐created value_type object, constructed 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 unordered_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.

Synopsis

Declared in <bslstl_unorderedmap.h>

template<class... Args>
iterator
try_emplace(
    const_iterator hint,
    KEY const& key,
    Args&&... args);

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