OC：打印自定义的类的属性信息

#import <Foundation/Foundation.h>

@interface MZBaseModel : NSObject

@end

#import "MZBaseModel.h"

#import <objc/runtime.h>

@implementation MZBaseModel

#ifdef DEBUG
- (NSString *)description {
    
    id modelClass = [self class];
    unsigned int count, i;
    objc_property_t *properties = class_copyPropertyList(modelClass, &count);
    
    NSMutableDictionary *dict = [NSMutableDictionary dictionaryWithCapacity:count];
    
    //遍历出所有的属性key/value
    for (i = 0; i < count; i++) {
        objc_property_t property = properties[i];
        NSString *propertyName = [NSString stringWithUTF8String:property_getName(property)];
        id value = [[self valueForKey:propertyName] description];
        [dict setObject:value forKey:propertyName];
    }
    return [NSString stringWithFormat:@"<%@: %p> %@", [self class], self, dict];
}
#endif

@end