Function merge_patch

3rd/nlohmann_json/include/nlohmann/json.hpp:8930–8954

! @brief applies a JSON Merge Patch The merge patch format is primarily intended for use with the HTTP PATCH method as a means of describing a set of modifications to a target resource's content. This function applies a merge patch to the current JSON value. The function implements the following algorithm from Section 2 of [RFC 7396 (JSON Merge Patch)](https://tools.i

    @since version 3.0.0
    */
    void merge_patch(const basic_json& apply_patch)
    {
        if (apply_patch.is_object())
        {
            if (!is_object())
            {
                *this = object();
            }
            for (auto it = apply_patch.begin(); it != apply_patch.end(); ++it)
            {
                if (it.value().is_null())
                {
                    erase(it.key());
                }
                else
                {
                    operator[](it.key()).merge_patch(it.value());
                }
            }
        }
        else
        {
            *this = apply_patch;
        }
    }

    /// @}
};