How to get all keys of one object?

[oyoungs]

Sometimes, I got an object, and need all keys of the object, but the iterator can only give me the value of one key-value pair. I want to use it like "auto keys = obj.keys()" to get all keys, but I can't find the interface. Is there anything to fix?

[nlohmann]

There is no such member function - the same as there is no such function for a std::map. But you can easily create such a function on your own: https://stackoverflow.com/questions/110157/how-to-retrieve-all-keys-or-values-from-a-stdmap-and-put-them-into-a-vector

Related: #1107 #459

[nlohmann]

@GitOyoung Do you need further assistance?

[oyoungs]

Thanks, I try to use the iterator to create a util function, and it works.

[boytjmjler]

I feel necessary!

[boytjmjler]

std::string object::key() {
return std::string("key");
}