A better NSObject description.

NSObject+CMDDescription.m

#import <objc/runtime.h>

- (NSString *)description {
    unsigned int count;
    objc_property_t *properties = class_copyPropertyList([self class], &count);
    NSMutableDictionary *dictionary = [NSMutableDictionary dictionaryWithCapacity:count];
    for (unsigned int i = 0; i < count; i++) {
        NSString *name = [NSString stringWithUTF8String:property_getName(properties[i])];
        id value = [self valueForKey:name];
        if (value == self) {
            value = [NSString stringWithFormat:
                     @"<%@ %p>",
                     NSStringFromClass([self class]),
                     self];
        }
        else if (value == nil) {
            value = [NSNull null];
        }
        [dictionary setObject:value forKey:name];
    }
    free(properties);
    return [NSString stringWithFormat:
            @"<%@ %p> %@",
            NSStringFromClass([self class]),
            self,
            dictionary];
}