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• (void)initialize
  {
  [self getIvars];
  }

• (void)getProperties
  {
  unsigned int count = 0;

  objc_property_t *properties = class_copyPropertyList([UITextField class], &count);

  for (int i = 0; i // 取出属性
  objc_property_t property = properties[i];

    // 打印属性名字
    XMGLog(@"%s   <---->   %s", property_getName(property), property_getAttributes(property));
  

  }

  free(properties);
  }

• (void)getIvars
  {
  unsigned int count = 0;

  // 拷贝出所有的成员变量列表
  Ivar *ivars = class_copyIvarList([UITextField class], &count);

  for (int i = 0; i // 取出成员变量
  // Ivar ivar = *(ivars + i);
  Ivar ivar = ivars[i];

    // 打印成员变量名字
    XMGLog(@"%s %s", ivar_getName(ivar), ivar_getTypeEncoding(ivar));
  

  }

  // 释放
  free(ivars);
  }

  Ivar *ivars = class_copyIvarList([UITextField class], &count);

  for (int i = 0; i // 取出成员变量
  // Ivar ivar = *(ivars + i);
  Ivar ivar = ivars[i];

    // 打印成员变量名字
    XMGLog(@"%s %s", ivar_getName(ivar), ivar_getTypeEncoding(ivar));
  

  }

  // 释放
  free(ivars);
  }

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