Question

I’m learning about how to compare NSDate objects with the isEqualToDateDate method. I don’t get why this simple test does not return true and print out the NSLog. Thanks in advance

#import <Foundation/Foundation.h>

int main (int argc, const char * argv[])
{

    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

    NSDate *myDate =    [[NSDate alloc]initWithTimeIntervalSinceNow:4000000];
    NSDate *otherDate = [[NSDate alloc]initWithTimeIntervalSinceNow:4000000];

     NSLog(@"myDate    %@",myDate);
     NSLog(@"otherDate %@",otherDate);

    if ([myDate isEqualToDate:otherDate]) {

        NSLog(@"The dates are the same");
    };

    [myDate release];
    [otherDate release];
    [pool drain];
    return 0;
}

Answer 1

I believe, and this may be wrong, that since you are using initWithTimeIntervalSinceNow that the objects are being allocated at slightly different times, thus making them unequal.