Dynamic Resolution Of Instance Method

DynamicResolve.m

#import <Foundation/Foundation.h>

void dynamicMethodIMP(id self, SEL _cmd) {
	NSLog(@"This Method(%@) is dynamically resolved.", NSStringFromSelector(_cmd));
}


@interface MyObject : NSObject
{
	int i;
}
@end

@implementation MyObject
+(BOOL)resolveInstanceMethod:(SEL)aSEL
{
	if(aSEL == @selector(resolveThisMethodDynamically)) {
		class_addMethod([self class], aSEL, (IMP) dynamicMethodIMP, "v@:");
		return YES;
	}

	return [super resolveInstanceMethod:aSEL];
}

@end

int main(int argc, char const *argv[])
{
	@autoreleasepool{
		MyObject *m = [[MyObject alloc] init];
		[m resolveThisMethodDynamically];

		[m release];
	}
	return 0;
}