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- From: bdubbs@cs.tamu.edu (Bruce Dubbs)
- Newsgroups: comp.os.os2.advocacy
- Subject: Re: A radical idea
- Date: 10 Jan 1993 21:45:39 GMT
- Organization: Computer Science Department, Texas A&M University
- Lines: 75
- Message-ID: <1iq5e4INNm3k@tamsun.tamu.edu>
- References: <726685274.AA00000@blkcat.UUCP>
- NNTP-Posting-Host: neuron.tamu.edu
-
- In article <726685274.AA00000@blkcat.UUCP> Kurt.Westerfeld@f347.n109.z1.fidonet.org (Kurt Westerfeld) writes:
- |RA> out there hear this: Goverment can produce GREAT software--
- |RA> ADA is far superior
- |RA> to any bastard hack like C or C++ that AT&T (a private
- |RA> industry) ever developed!
- |
- |I have NO experience with ADA; however, my experience with other
- |seasoned programmers from the DC area is that ADA is much like the
- |United States government, in that it is a large language that takes you
- |a long time in to get something done. Does this statement hold any
- |truth?
-
- Not very much. First a minor point. Ada is named for Lady Ada
- Lovelace, assistant to Charles Babbage and generally thought of as the
- first programmer. Ada therefore is a name not an acronym. ADA (all
- caps) is inappropriate.
-
- Ada is a procedural language. As such, it has the three major
- constructs of all procedural languages: sequence, looping, and
- selection. Function and subroutine call are essentially the same as
- in FORTRAN, C, Pascal, and PL/I.
-
- The problems a lot of people have is that it has very strong typing.
- In other words, a character is a character and not as number. For
- instance, the equivalent to the C code:
-
- char c;
- c = 'a';
- c = c + 1;
-
- is not permitted in Ada. You can't mix numeric and character
- operations.
-
- The purpose behind this is to attempt to make the programmer say what
- is intended and not use intrinsic characteristics that underlie less
- strict languages.
-
- In providing the checks on the programmer, Ada compilers have to do a
- lot of checking that other compilers do not. This makes Ada compilers
- slower than other language compilers. Additionally, there are run
- time checks that add code and make executables larger and slower than
- other language equivalents. These issues are getting better as the
- compilers mature, but still are generally slower than the equivalent C
- compiler.
-
- The main issues, however, are not how difficult things are made for
- the programmer, but how reliable the software is and how well the
- intentions of the original programmer are communicated to the
- maintainer.
-
- |ADA also happens to be designed by committee. I know for a fact that
- |this NEVER works with software. The best software is developed by lone
- |wolf or small teams.
-
- But a lone wolf or a small team cannot produce a 10 million line set
- of programs as some large government programs are. Usually these
- types of programs are embedded in hardware with real-time
- impilcations. Software process paradigms that work for small or
- medium programs do not scale up well to large or very large software
- efforts.
-
- |
- |I'd just like to hear some thoughts on this issue.
-
- I have heard that the government has contracted with the Free Software
- Foundation to produce GNU Ada. If true, I believe Ada will become a
- lot more popular than it is.
-
- -- Bruce
-
-
- --
- Bruce Dubbs | Oxymorons of note:
- bdubbs@neuron.tamu.edu | Honest Politician, Political Science,
- | Scrupulous Lawyer
-