std::array::max_size std::array::max_size constexpr size_type max_size(); (since C++11) (until C++14) constexpr size_type max_size() const; (since C++14) 返回容器由于系统或库实现限制而能够容纳的最大元素数,即std::distance(
因为每个 std::array<T, N> 都是固定大小容器,故 max_size 返回的值等于 N (亦为 size 所返回的值) 示例运行此代码 #include <iostream> #include <array> int main() { std::array<char, 10> s; std::cout << "Maximum size of a 'array' is " << s.max_size() << "\n"; } 可能的...
Thestd::array::max_sizefunction returns the maximum number of elements that the array can hold. This function is useful for determining the fixed size of astd::array, which is known at compile time. Forstd::array, the value returned bymax_size()is always equal to the size of the array...
vector<int> v2; vector<int> v3;auto_capacity1 = v1.capacity();//0auto_size1 = v1.size();//0auto_max_size1 = v1.max_size();//4611686018427387903v1.resize(10);auto_capacity2 = v1.capacity();//10auto_size2 = v1.size();//10auto_max_size2 = v1.max_size();//46116860184...
因为每个 std::array<T, N> 都是固定大小容器,故 max_size 返回的值等于 N (亦为 size 所返回的值) 示例 运行此代码 #include <iostream> #include <array> int main() { std::array<char, 10> s; std::cout << "Maximum size of a 'array' is " << s.max_size() << "\n"; } 可能...
array::endarray::cend array::rbeginarray::crbegin array::rendarray::crend Capacity array::empty array::size array::max_size Modifiers array::fill array::swap Non-member functions get std::swap to_array (C++20) operator==operator!=operator<operator>operator<=operator>=operator<=> ...
than max_size.if(__capacity>max_size())__capacity=max_size();}// NB: Need an array of ...
std::swap(std::array) (C++11) specializes thestd::swapalgorithm (function template) to_array (C++20) creates astd::arrayobject from a built-in array (function template) Helper classes std::tuple_size<std::array> (C++11) obtains the size of anarray ...
size_type__old_capacity){// _GLIBCXX_RESOLVE_LIB_DEFECTS// 83. String::npos vs. string::...
1. CArray<> VS ::std::vector<> ? CArray<> 和 ::std::vector<> 一样,都是模板类,用于管理任意类型的对象的动态数组。都在解构时释放所管理的动态内存。因此都可以用于代替手工动态数组管理。 但是,CArray<> 是在 C++ 标准化之前很多年(VC++2.0时代)设计的,当时对 C++程序设计,面向对象程序设计,模板...