Objective-C method "isMemberOfClass"

The sample:

#improt <Foundation/Foundation.h>

int main(int argc, char **argv)

{

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

       NSArray *arr = [NSArray array];

       printf("Arr isMemberOfClass NSArray: %d\n", [arr isMemberOfClass:[NSArray class]]);

       printf("Arr isKindOfClass NSArray: %d\n", [arr isKindOfClass:[NSArray class]]);

       [pool drain];

       return 0;

}

And it's output:

$ ./ismemberof

Arr isMemberOfClass NSArray: 0

Arr isKindOfClass NSArray:1