Class List
Here are the classes, structs, unions and interfaces with brief descriptions:

nlohmann | Namespace for Niels Lohmann
anonymous_namespace{json.hpp} | Unnamed namespace with internal helper functions
has_mapped_type | Helper to determine whether there's a key_type for T
basic_json | Class to store JSON values
const_iterator | Const random access iterator for the basic_json class
const_reverse_iterator | Const reverse random access iterator for the basic_json class
iterator | Random access iterator for the basic_json class
reverse_iterator | Reverse random access iterator for the basic_json class
std | STL namespace
hash< nlohmann::json > | Hash value for JSON objects