add an object to an object if key does not exist
Synopsis
Declared in <nlohmann/json.hpp>
template<class... Args>
std::pair<iterator, bool>
emplace(Args&&... args);Return Value
pair of an iterator to the element that was inserted, or that already existed with the same key, and a bool denoting whether the insertion took place
Parameters
Name |
Description |
args |
arguments forwarded to construct the new key‐value pair in place |
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