Snippet #45
Language: Objective-C, Author: Andy Matuschak
License: Public domain
GetUUID(): Quickly generate a UUID using Core Foundation.
NSString *GetUUID()
{
return (NSString *)CFUUIDCreateString(kCFAllocatorDefault, CFUUIDCreate(kCFAllocatorDefault));
}Compatible with:
- Mac OS X 10.0
- Mac OS X 10.1
- Mac OS X 10.2
- Mac OS X 10.3
- Mac OS X 10.4 PPC
- Mac OS X 10.4 Intel
- Mac OS X 10.5 PPC
- Mac OS X 10.5 Intel
Sorry, but this snippet leaks memory; the reference to the UUID object returned by CFUUIDCreate is lost after this function returns and can never be released.
A Cocoa-friendly implementation could involve a category on NSString:
+ (NSString*)UUIDString {
CFUUIDRef uuidRef = CFUUIDCreate(kCFAllocatorDefault);
CFStringRef stringRef = CFUUIDCreateString(kCFAllocatorDefault, uuidRef);
CFRelease(uuidRef);
return [(id)stringRef autorelease];
}