[Haskell-cafe] let and fixed point operator
andrewcoppin at btinternet.com
Thu Aug 30 17:10:33 EDT 2007
Brent Yorgey wrote:
> It's really maddening to write 50,000 lines of code, eventually get it
> to compile, run it, and have the program lock up and start
> consuming so
> much virtual memory that the entire PC becomes unstable within
> (This isn't helped by the fact that Ctrl+C doesn't seem to make
> GHCi or GHC-compiled programs halt...) Now you have 50,000 lines of
> otherwise untested code, and there's a bug within it
> *somewhere*... good
> Well, this is why you should test your program in bits and pieces
> before you get to that point. Writing 50,000 LOC before you even run
> your first test is a horrible idea in any programming language.
Avoidable? Not always, sadly...
(NB. 50,000 is an exaggeration. I've never written a program that large
in my entire life in any programming language I've ever used.)
The problem is that, depending on the program, sometimes you have to
write quite a lot of infrastructure before you get to the point where
there's anything finished enough to test. Obviously it's better to avoid
that happening, but that's easier said then done!
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