Re: argument checks
Re: argument checks
- Subject: Re: argument checks
- From: William Squires <email@hidden>
- Date: Thu, 12 Jun 2008 20:37:34 -0500
I thought ObjC used "#import", not "#include", so that multiple
copies of a header wouldn't appear, but maybe that's just for Cocoa
stuff, and not for "ordinary" C?
On Jun 12, 2008, at 1:05 AM, Jason Coco wrote:
#include <assert.h>
/* ... */
NSNumber *myNum = nil;
// Lots of code where you've forgotten to actually do anything with
myNum
assert( myNum != nil );
results = [myClass someCalculationUsing: myNum];
// lots more code
to remove the assertion in the release build, compile with -DNDEBUG
HTH, /jason
On Jun 12, 2008, at 01:50 , Ashley Perrien wrote:
Noob question: I'm putting together a small code library and I'm
trying to include some error checking in the methods; what I want
to protect against is the following:
NSNumber *myNum;
// Lots of code where I've forgotten to actually do anything with
myNum
results = [myClass someCalculationUsing: myNum];
myNum in this case is an object and does exist but it's not a
valid, usable argument. So in the implementation I'd like to have
something along the lines of:
if (myNum == nil)
NSLog(@"some error message");
but can't figure out what to check for that would get me into the
error message condition. Any suggestions?
Ashley Perrien
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