It seems useful to be able to write code that could handle Schema and StructType generically.
They both already define some methods (e.g. 'GetAllFieldIndices') that would allow for this, but seems to be missing others. For instance on Schema access to a field by index is done by 'field(index)' but on StructType is done by 'children(index'). Is there a utility function that already works for generically handling them? If not is seems like there are two possible options: 1. Create an adaptor facade that can be constructed with one of the two types. 2. Adding the missing methods 'field(index)' function to StructType or add 'child(index)' to Schema? If we pursue this approach do people have a preference on trying to make a common ancestor interface and making these virtual method calls? Or using the naming correspondence inside of templated code? Thanks, Micah
