Hi!
Lately I have been playing with approaches to implement multi dimensional 
arrays  in squeak with functionality similar to python's numpy library. The 
structure I've come up with has a main array class with instance variables 
pointing to a ByteArray and an array type object. Whenever a message is sent 
to an array object, it is dispatched to the array type object which in turn 
will then choose a concrete implementation from a plugin. The code in the 
plugin is automatically generated from definitions contained in the various 
array type classes. For an accessor like at:  for example I have a concrete 
implementation as Slang plugin for each data type that casts the ByteArray 
data to a pointer of the required type. So I have a structure looking like 
this:

class			ivars

SqArray		buffer, arrayType

SqArrayType
- SqArrayInt8
- SqArrayInt16
- SqArrayFloat32
.....

SqArrayPlugin -> concrete implementations

Is this a sensible design for doing something like this in Smalltalk? Am I 
abusing the Squeak plugin mechanism very badly? And finally, does something 
better already exist?

Any input and constructive criticism is very much appreciated,
Danny