我有这个课程,在编译时,会给出C2059和C 2238';'这两行都有错误。为什么这段代码不能编译?
class bitreader
{
std::istream& §is;
std::uint8_t §buff;
int §n;
uint32_t read()
{
if (§n == 0) {
§buff = §is.get();
§n = 8;
}
§n--;
return (§buff >> §n) & 1;
}
public:
bitreader(std::istream& os)
: §is(os)
, §n(0)
{}
// The following two lines produce errors
bitreader(const bitreader& rhs) = delete;
bitreader& operator=(const bitreader& rhs) = delete;
uint32_t operator()(uint32_t n)
{
uint32_t val = 0;
while (n-- > 0)
val = (val << 1) | read();
return val;
}
std::istream& operator()(uint32_t& val, uint32_t n)
{
val = 0;
while (n-->0)
val = (val << 1) | read();
return §is;
}
};
我添加相同的代码在我朋友的Visual Studio上编译没有任何问题。注意:如果我对代码编译的行进行注释。
答案 0 :(得分:4)
The =delete
specifier is a C++11 feature that Visual Studio 2012 does not support。将Visual Studio升级到较新版本,或删除=delete
并将这两个声明设为私有。