Luna::UnorderedMap::emplace

template <typename...>
Pair< iterator, bool > emplace(_Args &&... args)

Constructs one element directly in the map using the provided arguments.

Parameters

• in args

  The arguments to construct the element. _Ty(args...) will be used to construct the element.

Return value

Returns one iterator-bool pair indicating the result:* If the returned Boolean value is true, then the element is successfully constructed and inserted to the map, and the returned iterator points to the inserted element.

• If the returned Boolean value is false, then the operation is failed because another element with the same key already exists, and the returned iterator points to the existing element in the map.