Davidsen's device
Oliver Laumann
net at tub.UUCP
Fri Aug 4 22:59:08 AEST 1989
In article <1430 at crdgw1.crd.ge.com> davidsen at crdos1.UUCP (bill davidsen) writes:
> I recently discovered the following technique. While I can't swear
> that it's new and unique to me, I can claim independent discovery. I
> make no claims that it is suited to any problem you have, will have, or
> would admit to having.
>
> (*(asect < 1.0 ? hacs2 : hacs1)(asect);
This is quite a common idiom, I have used it lots of times (without the
syntax error in your example, of course).
You can even omit the * since it's superfluous.
Or is it? Our K&R (the old edition) doesn't seem to say anything about
this, but "gnucc -pedantic -ansi" doesn't complain about the following
program (a good heuristic for checking whether it's valid C):
int g() { return 5; }
int foo() {
int (*f)() = g;
return f();
}
--
Oliver Laumann net at TUB.BITNET net at tub.UUCP
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