Hi,
    we create a packaged named Aconcagua at SqueakSource.
    This model represents measures as first class objects, that is, an 
object that encapsulates a number with its unit.
    We uploaded a FAQ to its SqueakSource wiki, with some examples. The 
model includes almost 600 tests that can be used as examples also.
    We use this model in many of the financial applications we wrote and 
it is used by the Gregorian Calendar model we are going to upload soon 
(the one presented at ESUG last year).
    The package is going to be available for VisualAge, GemStone, 
VisualWorks and Dolphin. (Right now only on Squeak, VisualAge and GemStone).
    There is also a practitioner report we wrote for OOPSLA about this 
model:      
(http://portal.acm.org/citation.cfm?id=1094964&coll=ACM&dl=ACM&CFID=72196433&CFTOKEN=8952623 
<http://portal.acm.org/citation.cfm?id=1094964&coll=ACM&dl=ACM&CFID=72196433&CFTOKEN=8952623>)
 
    We hope you like it.
    Bye, Hernan.

-- 
______________________________
Lic. Hernán A. Wilkinson
Gerente de Desarrollo y Tecnología
Mercap S.R.L.
Tacuari 202 - 7mo Piso - Tel: 54-11-4878-1118
Buenos Aires - Argentina
http://www.mercapsoftware.com
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