cppreference.com Create account Page Discussion Standard revision:DiffC++98/03C++11C++14C++17C++20C++23C++26 View Edit History std::vector C++ Containers library std::vector Defined in header<vector> template< classT, classAllocator=std::allocator<T> ...
bool c = false); constexpr void reserve(size_type n); constexpr void shrink_to_fit(); // 元素访问 constexpr reference operator[](size_type n); constexpr const_reference operator[](size_type n) const; constexpr const_reference at(size_type n) const; constexpr reference at(size_type ...
cppreference.com 创建账户 页面 讨论 变换 查看 编辑 历史 std::vector C++ 容器库 std::vector 在标头<vector>定义 template< classT, classAllocator=std::allocator<T> >classvector; (1) namespace { template<classT> usingvector=std::vector<T,std::pmr::polymorphic_allocator<T>>; ...
std::vector<bool> behaves similarly to std::vector, but in order to be space efficient, it: Does not necessarily store its elements as a contiguous array. Exposes class std::vector<bool>::reference as a method of accessing individual bits. In particular, objects of this class are return...
The std::vector<bool, Alloc> specializations define std::vector<bool, Alloc>::reference as a publicly-accessible nested class. std::vector<bool, Alloc>::reference proxies the behavior of references to a single bit in std::vector<bool, Alloc>. The primary use of std::vector<bool, Alloc...
stackoverflow上看到的，直接一步到位，判断一个类是不是另一个模板类的特化类型。template<typename,...
reference front():返回首元素的引用 reference back():返回尾元素的引用 iterator begin():返回向量头指针,指向第一个元素 iterator end():返回向量尾指针,指向向量最后一个元素的下一个位置 reverse_iterator rbegin():反向迭代器,指向最后一个元素 reverse_iterator rend():反向迭代器,指向第一个元素之前的位置...
// cliext_vector_clear.cpp // compile with: /clr #include <cliext/vector> int main() { cliext::vector<wchar_t> c1; c1.push_back(L'a'); c1.push_back(L'b'); c1.push_back(L'c'); // display initial contents " a b c" for each (wchar_t elem in c1) System::Console::Wr...
reference&operator=(constreference& Right); reference&operator=(boolVal); 参数 Right 要将值赋给位的元素引用。 Val 要赋给位的布尔值。 示例 C++ // vector_bool_ref_op_assign.cpp// compile with: /EHsc#include<vector>#include<iostream>#include<string>usingnamespacestd;template<typenameC>voidprint...
Use pgvector from any language with a Postgres client. You can even generate and store vectors in one language and query them in another.LanguageLibraries / Examples C pgvector-c C++ pgvector-cpp C#, F#, Visual Basic pgvector-dotnet Crystal pgvector-crystal D pgvector-d Dart pgvector-dart...