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[REBOL] Re: Private/Public attributes

From: joel:neely:fedex at: 16-Nov-2002 18:28

Hi, Jan, and all, First, Jan, thanks for the thought-provoking posts! Much to ponder in your notes! (OBTW, off-topic, is there some reason you chose -+ instead of -> in your type analysis routines? Just curious...) Now on with my actual reply ;-) Jan Skibinski wrote:
> In essence, objects described by abstract data types > display some abstract behaviour that is independent > of the representation type. > > Users should not be allowed to break the abstraction via the > abstract data type interface. Once an abstract object is made, > its representation type can never be rediscovered. >
This sounds like an interesting direction for more work, but I must say I'm sympathetic toward Joel Spolsky's (no relation ;-) Law of Leak Abstractions which seems to be true for most languages and systems of which I'm aware (including REBOL, apropos the public/private discussion). -jn- -- ; Joel Neely joeldotneelyatfedexdotcom REBOL [] do [ do func [s] [ foreach [a b] s [prin b] ] sort/skip do function [s] [t] [ t: "" foreach [a b] s [repend t [b a]] t ] { | e s m!zauafBpcvekexEohthjJakwLrngohOqrlryRnsctdtiub} 2 ]