Re: C question for you old guys ;-)
Re: C question for you old guys ;-)
- Subject: Re: C question for you old guys ;-)
- From: Dan Sugalski <email@hidden>
- Date: Mon, 9 Jun 2003 10:51:07 -0400
At 9:58 AM -0400 6/9/03, Steve Bird wrote:
On Monday, June 9, 2003, at 08:43 AM, Dan Sugalski wrote:
At 11:30 AM +0200 6/9/03, Marcel Weiher wrote:
I guess I should have been a little more explicit. I wouldn't do
either of the above, but rather:
if ( spriteInfo == NULL ) {
return nil;
}
Having been bitten by C's block issues before, I do that as well,
but I try and take it one step further and do:
if ( NULL == spriteInfo ) {
return nil;
}
putting the constant on the left-hand side of the equality test. It
catches the times when I miss a = in the test--"NULL = foo" throws
a compile-time error, "foo = NULL" leads to a bughunt session.
--- I wrestled with this and came out against it.
Mainly because it goes against "natural" thinking:
Yeah, I'm never happy with how it reads. I finally went over to the
constant-first form after writing a lot of code that did comparisons
against non-zero success codes. When 80% of the constant checks
succeed on non-zero return values, well, a transform from equality
test to assignment makes a big difference.
Not a great thing, but bugs in rare failure error handlers are the
most annoying kind, so...
--
Dan
--------------------------------------"it's like this"-------------------
Dan Sugalski even samurai
email@hidden have teddy bears and even
teddy bears get drunk
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