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std::bitset

STD：：位集

Defined in header ​​
template< std::size_t N > class bitset;​​

类模板bitset表示一个固定大小的序列。N比特。Bitset可以由标准逻辑运算符操作，并转换成字符串和整数。

bitset满足…的要求CopyConstructible和CopyAssignable...

模板参数

N-the number of bits to allocate storage for

成员类型

referenceproxy class representing a reference to a bit (class)

成员函数

(constructor)constructs the bitset (public member function)
operator==operator!=compares the contents (public member function)

元素存取

操作者。[访问特定位%28公共成员函数%29

测试访问特定位%28公共成员函数%29

如果所有位、任何位或无位被设置为真%28公共成员函数%29，则检查

Count返回设置为true%28公共成员函数%29的位数。

容量

Size返回位集可以容纳%28公共成员函数%29的位数。

修饰符

算子&=算子=运算符^=操作符~执行二进制和，OR，XOR而非%28公共成员函数%29

运算符<<=运算符>>=运算符<<operator>>执行二进制移位左移和右移%28公共成员函数%29

将位设置为true或给定值%28公共成员函数%29

重置将位设置为false%28公共成员函数%29

翻转切换位%28公共成员函数%29的值

转换

到[医]字符串返回数据%28公共成员函数%29的字符串表示形式。

到[医]Ulong返回数据%28公共成员函数%29的无符号长整数表示形式。

到[医]超长%28C++11%29返回数据%28公共成员函数%29的无符号长整数表示形式

非会员职能

operator&operator|operator^performs binary logic operations on bitsets (function template)
operator<<operator>>performs stream input and output of bitsets (function template)

帮助者类

std::hash (C++11)hash support for std::bitset (class template specialization)

注记

如果在编译时不知道位集的大小，STD：：向量<bool>或助推：：动态[医]位集可能会被使用。

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http：//en.cppreference.com/w/cpp/实用程序/位集

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