Simple (No doubt, inefficient) word count system in Objective-C

gistfile1.m

-(NSUInteger) wordCount: (NSString *) string {

    __block NSUInteger wordCount = 0;
    [string enumerateSubstringsInRange:NSMakeRange(0, string.length)
                               options:NSStringEnumerationByWords
                            usingBlock:^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {
                                wordCount++;
                            }];
    return wordCount;
}