The 7 Rules for Writing Software That Won’t Die When You Do | Hacker News Reader

The 7 Rules for Writing Software That Won’t Die When You Do

goel.io

1 pointbluedevilzn4 comments

One important point that is missed in this article, is for your software to still run when you die, it has to be written in a programming language that will still "exist" then.

Is your current C compiler still able to compile K&R C code from the 70s? Then what makes you think the standard C of 2040 will be able to compile C99 code?

Is your current python 3.3 able to python 2.7 code? Then what makes you think that python 42.2 will be able to run your python code?

Is your current perl, err, does that still even exist?

On the other hand, if you choose a programming language that is standardized, and whose standard is not updated every two years, say, ANSI Common Lisp, that is able to run LISP programs from the sixties in 2015, that you can extend and make evolve with user code in libraries and your applications, without having to wait for standard comitees to decide whether it should be added, perhaps in an incompatible way, then, since this language can run 50 years old programs, perhaps you could bet it will be able to run your programs in 50 years.

At least, that's my bet.

http://www.informatimago.com/develop/lisp/com/informatimago/...

http://cliki.net/Getting+Started

Edit: Cobol and Fortran are disqualified, for they get new standards; I had to edit a couple of small cobol programs I wrote in the 80s quite a bit to make them work on OpenCobol on Linux last year... Only LISP is good!

The ANSI C standards are backwards compatible. K&R C is not one of them. If you write in C89/C90 it will last as long as any LISP program.

The track record is not encouraging. Perhaps some pair of standard keep backward compatibility, but I've already read reports of programs that don't compile anymore with gcc 5.0.

Is the conflict you read about a bug in the compiler or a bug in the standard? A bug in the standard is much worse, whereas implementation bugs can be fixed. Maybe you read about undefined behavior? Implementations are free to change how they handle it.

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