Simpler Fibonacci function

[Paul Hudak]

> In any case, as a newbie, I can tell you that I found the fib
> function puzzling as stated.
> 
> > ...and not to show a "canonical" version of Fibonacci
> 
> Nonetheless, it seems to have become the canonical version.  For
> example, see the list of references to this version on Google:
> http://www.google.com/search?q=%22zip+fib+%28tail+fib%22.
>
> This is perhaps unfortunate since fib is a kind of "hello world" for
> Haskell and other FP languages.

Well, I cannot speak for the other references, since I did not write
them :-).  On the other hand, stream processing *is* a stylistic way to
write certain kinds of functional programs, with the idea of replacing
an iteration with a stream.  But I agree that this particular example
should not be the equivalent of "hello world".  (Of course, for that,
one would just write:

  print "hello world"

:-)  -Paul