In fact, a person may have an STD without knowing it.
事实上,一个人可以在不知情的情况下已经感染。
std::string change_extension(const path& oldpath, const std::string new_extension): This API returns a new string that reflects the changed name.
string change_extension(const path& oldpath, const std::string new_extension):此 API 将返回反映更改后的名称的新字符串。
So why is boost::swap interesting when STL already provides std::swap? The behavior of std::swap is equivalent to
那么在 STL 已提供 std::swap 时为什么还有必要使用 boost::swap?
lstd So this is pretty-- similarly might we say this dash L STD for standard, for Standard I/O.
同样也可以是,即标准输入输出库。
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