1. 遍历对象的所有@property属性，赋初始值‘uu’

   
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2. 代码如下：

import <objc/runtime.h>

-(void)defaultValueMethod:(id) sender
{ int i; int propertyCount = 0; objc_property_t propertyList = class_copyPropertyList([sender class], &propertyCount); for ( i=0; i < propertyCount; i++ ) { objc_property_t thisProperty = propertyList + i; const char propertyName = property_getName(thisProperty); NSString *string = [NSString stringWithCString:propertyName encoding:NSUTF8StringEncoding]; [self setValue:@"uu" forKey:string]; NSLog(@"Person has a property: '%s'", propertyName); }
}

3. 虽然遍历了对象@property属性，但是不全面。下面是我查到一片针对我这个缺陷描述的链接。
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