Hi, Janet,

Use a Set, not of the *amounts* (two different accounts might by 
coincidence have the same amounts) but of the *accounts*.

Thus, consider something like:

   allAccounts := Set new.
   portfolios do: [:aPortfolio | allAccounts addAll: aPortfolio accounts].
   total := (allAccounts collect: [:anAccount | anAccount amount]) sum.


Cheers,

   -- Scott


At 11:26 PM -0800 3/12/03, Janet Abdul-Karim wrote:
>I have a collection of portfolios and each portfolio has a 
>collection of accounts.  I am trying to get the sum of the accounts, 
>but my problem is if that some portfolios have the same account then 
>that would not give me the write sum.  is there some method to make 
>sure all value are unique in a collection