Function is_primitive

3rd/nlohmann_json/include/nlohmann/json.hpp:2502–2505

! @brief return whether type is primitive This function returns true if and only if the JSON type is primitive (string, number, boolean, or null). @return `true` if type is primitive (string, number, boolean, or null), `false` otherwise. @complexity Constant. @exceptionsafety No-throw guarantee: this member function never throws exceptions. @liveexample{The

    @since version 1.0.0
    */
    constexpr bool is_primitive() const noexcept
    {
        return is_null() || is_string() || is_boolean() || is_number() || is_binary();
    }

    /*!
    @brief return whether type is structured