Applying the Law of Demeter

[Dennis Lee Bieber]

Anna fed this fish to the penguins on Saturday 14 December 2002 11:01 
am:

> 
> Reading this thread, it occured to me, would this Law of Demeter
> qualify as a namespace issue? (Or am I totally off on that...?)
>
        Only if mixing Greek and Roman (Persephone vs Proserpina (sp?)) <G>

        I'd consider the LoD more of an encapsulation issue. If your goal is 
to perform a transaction on an Automated Teller Machine, all you should 
need to know is the User (via ATM card mag-strip & PIN), and 
transaction details (deposit/withdrawal/transfer, account(s), amount). 
You shouldn't have to know or invoke operations for connect-to-bank, 
validate-PIN, validate-accounts... etc. All those operations should be 
handled from within the transaction logic.

        Yes, that is a weak example...

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