home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!spool.mu.edu!olivea!apple!goofy!mumbo.apple.com!gallant.apple.com!wintermute.apple.com!user
- From: ksand@apple.com (Kent Sandvik )
- Newsgroups: comp.sys.mac.oop.misc
- Subject: Re: Learning App Frameworks (was Re: THINK Class Library learning..)
- Message-ID: <ksand-060193222337@wintermute.apple.com>
- Date: 7 Jan 93 06:27:43 GMT
- References: <1992Dec1.220344.234@physc1.byu.edu> <1992Dec3.064131.23364@reed.edu> <Dec.3.13.57.31.1992.18090@gandalf.rutgers.edu> <1992Dec4.081456.13906@reed.edu> <1992Dec29.213057.14290@news.mentorg.com> <6606.2b41845f@hayes.com> <ksand-301292103135@wintermute.apple
- Sender: news@gallant.apple.com
- Followup-To: comp.sys.mac.oop.misc
- Organization: (Evil Eye Creature from Mars, Inc.)
- Lines: 32
-
- In article <6613.2b459125@hayes.com>, bcoleman@hayes.com (Bill Coleman)
- wrote:
- > First, the C++ macros were part of the implementation, not part of the
- > interface. Eiffel correctly places the pre- and post-conditions in the
- > interface -- since they are just as much of the specficiation of the
- > routines as anything else. I ended up having to move the implementation
- > assertions as comments in the header -- it was a lot of work to keep it up
- > to date and accurate.
-
- Well, I don't question that a pre-processor that automatically inserts
- the constructs is better than programmer responsibility concerning
- assertions.
- However you could also forget to specify the assertion flag in Eiffel,
- causing similar problems. In other words it's not a panacea when a compiler
- is automatically doing the job, there's still a responsibility of the
- programmer to keep track of the state.
-
- Correct me if I'm wrong (haven't looked into Eiffel for a long time,
- got tired of waiting for the Mac port :-) ), but you still need to provide
- meta-information about the assertion statements for Eiffel (like min max
- values). In other words you can't avoid work anyway.
-
- Anyway, my ASSERT macro package is less than a page, does it's job well,
- and once written I could use it wherever I want, in whatever scope. And
- I don't have problems keeping track of use of the package, it's now second
- nature for me to ripple in assert statements in the code.
-
- Kent
- -------------------
- Kent Sandvik (UUCP: ....!apple!ksand; INTERNET: ksand@apple.com)
- DISCLAIMER: Private activities on the Net.
- "Don't just do something! Stand there!" -- Mystery Science Theater 3000
-