>classvector; (1) namespace { template<classT> usingvector=std::vector<T,std::pmr::polymorphic_allocator<T>>; } (2) (since C++17) 1)std::vectoris a sequence container that encapsulates dynamic size arrays. 2)std::pmr::vectoris an alias template that uses apolymorphic allocator. ...
类模板 std::vectornamespace std { template<class T, class Allocator = allocator<T>> class vector { public: // 类型 using value_type = T; using allocator_type = Allocator; using pointer = typename allocator_traits<Allocator>::pointer; using const_pointer = typename allocator_traits<Allocator...
>classvector; (1) namespace { template<classT> usingvector=std::vector<T,std::pmr::polymorphic_allocator<T>>; } (2) (C++17 起) 1)std::vector是封装动态数组的序列容器。 2)std::pmr::vector是使用多态分配器的模板别名。 元素被连续存储,这意味着不仅可通过迭代器,还能用指向元素的常规指针访问...
vector::front vector::back Iterators vector::beginvector::cbegin (C++11) vector::endvector::cend (C++11) vector::rbeginvector::crbegin (C++11) vector::rendvector::crend (C++11) Capacity vector::empty vector::size vector::max_size vector::reserve vector::capacity Modifiers vector::clear ve...
constexpr std::vector<T, Alloc>::size_type erase( std::vector<T, Alloc>& c, const U& value ); (since C++20) (until C++26) template< class T, class Alloc, class U = T > constexpr std::vector<T, Alloc>::size_type erase( std::vector<T, Alloc>& c, const U& value );...
inplace_vector(C++26) hive(C++26) map−multimap−set−multiset unordered_map(C++11) unordered_multimap(C++11) unordered_set(C++11) unordered_multiset(C++11) Container adaptors span(C++20)−mdspan(C++23) Iterators library Ranges library(C++20) ...
假如我们传入一个vector类型,vector初始化为{1, 2, 3, 1, 2, 3},然后通过调用std::erase,按照正常想法,函数执行完毕之后vector应该仅仅删掉大小为1首元素。可是事实却并非如此,通过代码运行会发现容器剩下的元素是{2, 3, 1, 3},这里面究竟发生了什么。
vector−deque list−forward_list(C++11) set−multiset map−multimap unordered_set(C++11) unordered_multiset(C++11) unordered_map(C++11) unordered_multimap(C++11) stack−queue−priority_queue Algorytmy Iteratory Biblioteka operacji numerycznych ...
>classvector; std::vectorist ein sequentieller Container, der Arrays dynamischer Größe kapselt. Die Elemente werden zusammenhängend gespeichert, was bedeutet, dass auf die Elemente nicht nur durch Iteratoren zugegriffen werden kann, sondern auch mit Offsets auf reguläre Zeiger auf El...
basic_string_view (C++17) Chaînes terminées par null: byte − multibyte − wide Conteneurs array (C++11) − vector map − unordered_map (C++11) priority_queue − span (C++20) Autres conteneurs: sequence − associative unordered associative − adaptors Itérate...