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- From: ian@syacus.acus.oz.au (Ian Joyner)
- Subject: Re: Pointers
- Message-ID: <1992Nov9.121317.3914@syacus.acus.oz.au>
- Organization: ACUS Australian Centre for Unisys Software, Sydney
- References: <1992Nov3.130634.26112@rdg.dec.com> <1992Nov4.031026.23624@linus.mitre.org> <1992Nov4.093545.15950@rdg.dec.com> <Bx7oAz.7Lp@mentor.cc.purdue.edu>
- Date: Mon, 9 Nov 1992 12:13:17 GMT
- Lines: 30
-
- hrubin@pop.stat.purdue.edu (Herman Rubin) writes:
-
- >Computer hardware quite properly uses pointers, and any software that
- >does not is just making life difficult for the users.
-
- Firstly, computer hardware does not necessarily use pointers.
-
- Secondly, where different architectures do use pointers, the definition
- of them can be quite different. As I have already said, Unisys A Series
- have quite a different kind of pointer to that which C likes. In fact
- the hardware defines a higher level more problem oriented kind of pointer
- than C.
-
- Thirdly, if you want direct access to hardware capabilities, then you may
- as well use assembler. The disadvantages should be well known. Such languages
- are solutions or 'how' oriented, not problem and 'what' oriented. This means
- that you are not implementation independent, which makes portability difficult.
- This also makes maintainability difficult. This style of programming locks
- you into certain ways of doing things, instead of giving you the freedom
- that higher level languages give you.
-
- Customers are becoming more sophisticated, and do not like to be locked
- into closed systems (proprietary systems are not necessarily closed), or
- into Unix for that matter.
-
- --
- Ian Joyner ACUS (Australian Centre for Unisys Software) ian@syacus.acus.oz
- "Where is the man with all the great directions?...You can't imagine it,
- how hard it is to grow, Can you imagine the order of the universe?" ABWH
- Disclaimer:Opinions and comments are personal.
-