过度扩张的问题和僵尸

有什么好处?我以为打开僵尸会告诉我我是一个多么愚蠢的人…而不是修复它。

#import "AppController.h"


@implementation AppController

-(IBAction)countCharacters:(id)sender   {
    //did a button do this?
if(![sender isKindOfClass:[NSButton class]])    {
    NSLog(@"%@ is not a button", sender);
    return;
}

//proceed
NSString *userString = [textField stringValue];
NSNumber *count = [NSNumber numberWithInt:[userString length]];
NSString *outputString = [NSString stringWithFormat:@"'%@' has %@ characters.",
                        userString, count];
//[userString release];
//[count release];
[labelField setStringValue:outputString];
//[outputString release];
}
@end