Whats the scope of c code within objective-c classes?
- by roja
I was reading up about bypassing objective-c's messaging to gain performance (irrelevant to this specific question) when i found an interesting bit of code:
#import <Cocoa/Cocoa.h>
@interface Fib : NSObject { }
- (long long) cFib: (NSUInteger) number;
@end
@implementation Fib
// c implementation of fib
long long cFibIMP(NSUInteger number)
{
return (number < 3) ?
1 :
cFib(number - 1) + cFib(number - 2);
}
// method wrapper for c implementation of fib
- (long long) cFib: (NSUInteger) number
{
return cFibIMP(number);
}
@end
My question is; when using c function, within an objective-c object, what scope is the c function (cFibIMP in this particular case) placed in? Does the objective-c class encapsulate the c function removing change of name-clash or is the c function simply dumped into the global scope of the whole objective-c program?
