If a key equivalent to the specified key already exists in this map, return a pair containing an iterator referring to the existing item and false. Otherwise, insert into this map a newly‐created entry constructed from key and the specified args, and return a pair containing an iterator referring to the newly‐created entry and true. 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_map.h>

template<class... Args>
pair<iterator, bool>
try_emplace(
    int const& key,
    Args&&... args);

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