nlohmann::ordered_map::emplace

inserts a new element constructed from key and t if the key does not already exist

Synopsis

Declared in <nlohmann/ordered_map.hpp>

std::pair<iterator, bool>
emplace(
    key_type const& key,
    T&& t);

Return Value

pair of an iterator to the (possibly pre-existing) element and a bool that is true if the insertion took place

Parameters

NameDescription
key [in]key of the element to insert
t [in]value of the element to insert