According to the explanation of the almost C API with the connections to the 2D and 3D graphics acceleration, the original implementation was created. However, she does not meet the performance request of API calls, which are, for example, very hardware. The new API not only knows the POD C ++ types (Plain Old Data), but already the current state of some extended types, and it is prepared for additional assets such as INT64_T or typed array.
The FAST C API creates the internal Struct V8 :: CFunctionInfo, which represents the signatures of callbacks in just the C ++ types. To use the developer first creates a callback with a specific signature and always call the V8 :: CFunction :: Make-Method with the callback to create a suitable instance of the V8 :: CFUNCTION. Then you are working on the V8 :: FunctionTemplate, which is next to the Fast-Api-Regular Callback.