home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!cs.utexas.edu!sun-barr!sh.wide!wnoc-tyo-news!etl.go.jp!ume!crimson!kekux!s.u-tokyo!is.s.u-tokyo!jeff
- From: jeff@is.s.u-tokyo.ac.jp (Jeff McAffer)
- Newsgroups: comp.object
- Subject: Re: Object hidden state and side effects
- Message-ID: <1992Dec17.165224.25553@kei.is.s.u-tokyo.ac.jp>
- Date: 17 Dec 92 16:52:21 GMT
- References: <1992Dec11.163449.18439@crd.ge.com>
- <1992Dec13.152136.16852@hasler.ascom.ch> <1992Dec14.175402.1889@crd.ge.com>
- <1992Dec15.143243.16256@heeg.de> <1992Dec15.224536.13554@crd.ge.com>
- Sender: news@kei.is.s.u-tokyo.ac.jp (Usenet News System)
- Reply-To: jeff@is.s.u-tokyo.ac.jp
- Organization: University of Tokyo, tcejorP Project.
- Lines: 27
-
- In article <1992Dec15.224536.13554@crd.ge.com> eaker@ukulele.crd.ge.com (Chuck Eaker) writes:
-
- >updates. But, we would not need to update the list of integers
- >or the list of colors unless we chose a bizarre way to represent
- >them or unless we chose, for efficiency reasons to not implement
- >all the integers and colors that actually exist. The color
- >green is eternal and immutable. Green things are not.
- >Representations of the color green are not.
-
- Although we do seem to be wandering a bit (to say the least)...
-
- I guarantee you that your green is not the same as my green.
- Therefore, green is not immutable. Your green is immutable, my green
- is immutable. They are not equal and every once and a while, I change
- mine. The only thing that is eternal and immutable about colors is
- their frequency and perhaps that is not even true.
-
- back to good and bad. What if I assign good to an attribute. Then it
- becomes, in the surrounding context, bad' to be good and good' to be
- bad (' used to prevent cicularity). Should the attribute now be bad'?
- That is, should good be mutated to bad' (ditto for bad)? I don't
- know.
-
- --
- --
- ato de, |m -- Santa or Satan? Think about it.
-