Test isEqual & isEqualToString

results.txt

tail end of the results

2012-03-30 11:36:39.865 Untitled[78506:707] IsEqual: 1438 | isEqualToString 589
2012-03-30 11:36:39.875 Untitled[78506:707] IsEqual: 1377 | isEqualToString 590
2012-03-30 11:36:39.876 Untitled[78506:707] IsEqual: 956 | isEqualToString 560
2012-03-30 11:36:39.877 Untitled[78506:707] IsEqual: 860 | isEqualToString 451
2012-03-30 11:36:39.877 Untitled[78506:707] IsEqual: 824 | isEqualToString 433
2012-03-30 11:36:39.878 Untitled[78506:707] IsEqual Average 1212 - IsEqualToString Average 619

test.m

#import <Foundation/Foundation.h>
#include <sys/sysctl.h>
#include <unistd.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#import <stdarg.h>
#import <mach/mach.h>
#import <mach/mach_time.h>
#import <unistd.h>

uint64_t CWNanoSecondsToExecuteCode(void(^TimeBlock)(void))
{
	uint64_t start = mach_absolute_time();
	TimeBlock();
	uint64_t end = mach_absolute_time();
	uint64_t elapsed = end - start;
	mach_timebase_info_data_t info;
	mach_timebase_info(&info);
	uint64_t nanoSeconds = elapsed * info.numer / info.denom;
	return nanoSeconds;
}

@interface NSString (CWNSStringAdditions)
+(NSString *)cw_uuidString;
@end

@implementation NSString (CWNSStringAdditions)

/**
 Convenience method for Core Foundations CFUUIDCreate() function
 */
+(NSString *)cw_uuidString
{
	NSString *returnedString = nil;
	CFUUIDRef uid = CFUUIDCreate(kCFAllocatorDefault);
	CFStringRef tmpString = CFUUIDCreateString(kCFAllocatorDefault, uid);
	returnedString = [[NSString alloc] initWithString:(__bridge NSString *)tmpString];
	CFRelease(tmpString);
	CFRelease(uid);
	return returnedString;
}

@end

int main(int argc, char *argv[]) {
	@autoreleasepool {
		uint64_t isEqualTotal = 0;
		uint64_t isEqualToStringTotal = 0;
		
		for (NSInteger i = 0; i < 1000; i++) {
			NSString *string1 = [NSString cw_uuidString];
			NSString *string2 = [NSString cw_uuidString];
			
			uint64_t comp1 = CWNanoSecondsToExecuteCode(^{
				[string1 isEqual:string2];
			});
			
			uint64_t comp2 = CWNanoSecondsToExecuteCode(^{
				[string1 isEqualToString:string2];
			});
			
			isEqualTotal += comp1;
			isEqualToStringTotal += comp2;
			
			NSLog(@"IsEqual: %llu | isEqualToString %llu",comp1,comp2);
		}
		
		uint64_t isEqualAverage = isEqualTotal / 1000;
		uint64_t isEqualToStringAverage = isEqualToStringTotal / 1000;
					
		NSLog(@"IsEqual Average %llu - IsEqualToString Average %llu",isEqualAverage,isEqualToStringAverage);
	}
	return 0;
}