How to delete while iterating over object keys?

[jtmr05]

I tried to follow an approach similar to the one in this answer but it seems like the erase method doesn't actually return anything.

[nlohmann]

Can you share an example?

[jtmr05]

solved it by calling erase with the iterator as argument instead of the key itself

[jtmr05]

static void delete_keys(nlohmann::json& json_obj){

    nlohmann::json::iterator it {json_obj.begin()};

    while(it != json_obj.end()){
        if(REMOVABLE_KEYS.contains(it.key()))
            it = json_obj.erase(it); //instead of json_obj.erase(it.key());
        else
            it++;
    }
}