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- Newsgroups: comp.lang.misc
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- From: hrubin@pop.stat.purdue.edu (Herman Rubin)
- Subject: Re: Pointers
- Message-ID: <BxnrI0.10M@mentor.cc.purdue.edu>
- Sender: news@mentor.cc.purdue.edu (USENET News)
- Organization: Purdue University Statistics Department
- References: <BxJzzv.4H7@mentor.cc.purdue.edu> <721539019@sheol.UUCP> <1992Nov12.203014.11596@newshost.lanl.gov>
- Date: Fri, 13 Nov 1992 14:13:11 GMT
- Lines: 24
-
- In article <1992Nov12.203014.11596@newshost.lanl.gov> jlg@cochiti.lanl.gov (J. Giles) writes:
- >If the only things you can do with a pointer are to dereference it,
- >pass it as a procedure argument, or assign it from another of the same
- >type, then you never needed the pointer to begin with. What you needed
- >was for the data type to which it points to be a first-class type.
-
- >Dr. Rubin's use of pointers to functions is exactly of that form.
- >He can do nothing with them except dereference, pass, or assign them.
- >He would actually get *greater* capability if the language he used
- >allowed `function' to be a first-class data type with assignment,
- >partial application (currying), and composition as it's defined
- >operations.
-
- Even if you have the greater capablility, do you have to insist on
- making things complicated by using it? I use pointers both for
- functions and for descriptors. I use pointers to get a more powerful
- version of COMMON blocks. I use pointers because any non-brain-damaged
- machine uses them. In fact, Fortran (at least up to F77) uses only
- pointers, but all pointers are fixed!
- --
- Herman Rubin, Dept. of Statistics, Purdue Univ., West Lafayette IN47907-1399
- Phone: (317)494-6054
- hrubin@snap.stat.purdue.edu (Internet, bitnet)
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-