Re: Experiment: functional concepts in C

[Phil Carmody]

Ertugrul Söylemez <es@ertes.dewri tes:

Hello people,
>
I thought it would be funny to try to bring functional concepts into the
C language. If anyone is interested, I have published the results on my
blog [1].
>
[1] http://blog.ertes.de/2008/11/obscure...rspective.html

"I have written four versions of the factorial function in C
[...]
Version 2 — using function pointer continuations"

[ which contains:
void fact(int x, void (*e)(char *), void (*k)(int)) {
void mulCont(int y) {
k(x*y);
}
... ]

Version 3 — implementing algebraic lists and folds using closures

[ which contains:
void cons(int x, list xs, void (*k)(list)) {
void concat(void (*end)(), void (*more)(int)) {
more(x);
xs(end, more);
}
... ]

Version 4 — lambda calculus with fixpoint operator

[ which contains:
void fix(int (*f)(int (*)(int), int), void (*k)(int (*)(int))) {
int ldf(int x) {
int y;
... ]
"""


Perhaps you'd like to reword the introduction to say "I have written
four versions of the factorial function, one of which is in C and
the rest of them are not in C."?

Phil
--
I tried the Vista speech recognition by running the tutorial. I was
amazed, it was awesome, recognised every word I said. Then I said the
wrong word ... and it typed the right one. It was actually just
detecting a sound and printing the expected word! -- pbhj on /.