Method count

extern/json/json.hpp:4261–4265

! @brief returns the number of occurrences of a key in a JSON object Returns the number of elements with key @a key. If ObjectType is the default `std::map` type, the return value will always be `0` (@a key was not found) or `1` (@a key was found). @param[in] key key value of the element to count @return Number of elements with key @a key. If the JSON value is not an

    @since version 1.0.0
    */
    size_type count(typename object_t::key_type key) const
    {
        // return 0 for all nonobject types
        return is_object() ? m_value.object->count(key) : 0;
    }

    /// @}