std::bitset的散列支持 (类模板特化) 注解 若某个位集合在编译时大小未知,或者必须在运行时改变其大小,则可代之以使用std::vector<bool>或boost::dynamic_bitset之类的动态类型。 示例 运行此代码 #include <bitset>#include <cassert>#include <cstddef>#include <iostream>intmain(){typedefstd::size_tlength...
Dynamic memory management Strings library Null-terminated strings: byte−multibyte−wide Date and time library Localization library Input/output library Algorithms library Numerics library Common mathematical functions Floating-point environment(C99)
Dynamic memory management Strings library Null-terminated strings: byte−multibyte−wide Date and time library Localization library Input/output library Algorithms library Numerics library Common mathematical functions Floating-point environment(C99)
std::hash<std::bitset> (C++11) hash support forstd::bitset (class template specialization) Notes If the size of a bit-set is not known at compile time, or it is necessary to change its size at run-time, the dynamic types such asstd::vector<bool>orboost::dynamic_bitset<>may be use...
Dynamic memory management Strings library Null-terminated strings: byte−multibyte−wide Date and time library Localization library Input/output library Algorithms library Numerics library Common mathematical functions Floating-point environment(C99)
若位集的大小在编译时已知,则可使用std::bitset,它提供一组更丰富的成员函数。另外,boost::dynamic_bitset作为std::vector<bool>的替用者存在。 因为std::vector<bool>的表示可以优化,故它不需要满足所有容器(Container)或序列容器(SequenceContainer)的要求。例如,因为std::vector<bool>::iterator是实现定义的,故...
Instrukcje Funkcje−Klasy−Szablony Wyjątki Nagłówki Koncepty Biblioteka narzędzi Wparcie dla typów Dynamiczne zarządzanie pamięcią Obsługa błędów Data i czas bitset Obiekty funkcyjne pair−tuple(C++11) hash(C++11) ...
Dynamic memory management Error handling Program utilities Date and time bitset Function objects pair−tuple(C++11) Strings library basic_string Null-terminated byte strings Null-terminated multibyte strings Null-terminated wide strings Containers library ...
Library concepts Utilities library Type support (basic types, RTTI, type traits) Dynamic memory management Error handling Program utilities Date and time bitset Function objects pair − tuple (C++11) integer_sequence (C++14) Strings library basic_string Null-terminated byte strings Null-terminated ...
#include<string>usingnamespacestd;//defines an empty stringstring str0;//defines a string initialized with "Hello"string str1 ="Hello";//defines a string initialized with "Greetings!"stringstr2("Greetings!");//defines a string which is a copy of str2. (str2 may be a string or a c...