std::make_signed_t<decltype(c.size())>>>(c.size()) 3,4)N 异常 1,2)可能会抛出由实现定义的异常。 重载 可以为未暴露适合的size()成员函数的类或枚举提供size的自定义重载,从而能检测它。 可能的实现 注解 示例 运行此代码 可能的输出: size of a[]: 12 8 4 1 3 参阅...
__cpp_lib_ssize201902L(C++20)std::ssize()(2,4)and unsignedstd::span::size() Example Run this code #include <cassert>#include <cstring>#include <iostream>#include <vector>intmain(){// Works with containersstd::vector<int>v{3,1,4};assert(std::size(v)==3);// And works with bu...
std::size_tis the unsigned integer type of the result of the following operators: sizeof sizeof... alignof (since C++11) If a program attempts to form an oversized type (i.e., the number of bytes in itsobject representationexceeds the maximum value representable instd::size_t), the pro...
(function macro) integer literals binary, (since C++14) decimal, octal, or hexadecimal numbers of integer type C documentation for size_t © cppreference.comLicensed under the Creative Commons Attribution-ShareAlike Unported License v3.0. https://en.cppreference.com/w/cpp/types/size_t ...
template< class T > struct tuple_size; // not defined (1) (since C++11) template< class T > struct tuple_size< const T > : std::integral_constant<std::size_t, std::tuple_size<T>::value> {}; (2) (since C++11) template< class T > struct tuple_size< volatile T > :...
#include <cstddef>#include <iostream>#include <array>intmain(){std::array<std::size_t,10>a;for(std::size_ti=0;i!=a.size();++i)a[i]=i;for(std::size_ti=a.size()-1;i<a.size();--i)std::cout<<a[i]<<" ";} Output: ...
© cppreference.com 在CreativeCommonsAttribution下授权-ShareAlike未移植许可v3.0。 http://en.cppreference.com/w/cpp/string/basic[医]字符串/大小 本文档系腾讯云开发者社区成员共同维护,如有问题请联系cloudcommunity@tencent.com 最后更新于:2017-12-18 ...
代码语言:txt 复制 © cppreference.com 在CreativeCommonsAttribution下授权-ShareAlike未移植许可v3.0。 http://en.cppreference.com/w/cpp/线程/硬件[医]破坏性[医]干扰[医]大小 本文档系腾讯云开发者社区成员共同维护,如有问题请联系 cloudcommunity@tencent.com最后更新于:2017-12-18 ...
size_type size()const; (until C++11) size_type size()constnoexcept; (since C++11) Returns the number of elements in the container, i.e.std::distance(begin(), end()). Parameters (none) Return value The number of elements in the container. ...
^cppreference: Type Aliasinghttps://en.cppreference.com/w/cpp/language/reinterpret_cast#Type_...