Kaz Kylheku  <kkylheku@gmail.com> wrote:
+---------------
| Rob Warnock <rpw3@rpw3.org> wrote:
| >     $ ./ctest
| >     17003
| >     $ 
| >
| > I've been playing these sorts of games for years, with great success!  ;-}
| 
| Who's winning today, and what is the score?
+---------------

Seriously, having even ad-hoc closures in my "C toolbox" has been
a big win for me.

- There are some standard C library functions that are a lot less
  convenient if you *don't* have them [e.g., the "ftw(3)/nftw(3)"
  file tree walkers come to mind, or the "twalk(3)" library].

- It makes writing your own polymorphic/generic higher-order functions
  *much* easier.

- It makes writing GUI event callback functions easier.

Yes, you can fake it by requiring all your higher-order functions
to take both a "callback" function pointer and an opaque cookie
(which is passed to the "callback"), but you can't depend on all
the library functions you want to use doing this.


-Rob

-----
Rob Warnock			<rpw3@rpw3.org>
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