经常在bbs上看人讲cv-qualified type, 一直没搞明白这是个嘛东西, 今天google了一下, 居然没有找到答案, 于是想起google group,果然在里面搜到了, 这里有一个人问了个什么是cv-qualified type, 看了一下, 原来cv分别是const和voliate的简写…

  a cv-qualified type is the “const”, “volatile” or “const volatile”
version of a type. that is, a variable, function, etc. declared without
one of those is cv-unqualified, while the addition of one of those
specifies a cv-qualified type.

  翻开标准还真有这么一节专门讲它的…