1.at访问指定的元素,同时进行越界检查,若不在容器范围内,则抛出std::out_of_range类型的异常 2.operator[]访问指定的元素,此运算符决不插入新元素到容器。通过此运算符访问不存在的元素是未定义行为。 3.front 访问第一个元素,c.front()等价于*c.begin(); 4.back访问最后一个元素,c.back()等价于*sed::p...
std::vector C++ Containers library std::vector Defined in header<vector> template< classT, classAllocator=std::allocator<T> >classvector; (1) namespace { template<classT> usingvector=std::vector<T,std::pmr::polymorphic_allocator<T>>; ...
Vector is a C library that allows you to hold a dynamic number of elements in one container which isn't limited in how many elements you can store just like a conventional array. Vector is inspired by std::vector from the C++'s STL library. Building and Installing libvector Installing lib...
// The C++ Standard Library often creates symbols longer than that. // The warning can be disabled: //#pragma warning(disable:4786) #include <iostream> #include <vector> #include <string> using namespace std; template <typename C> void print(const string& s, const C& c) { cout << ...
这个构造函数使用范围[first, last)中的元素创建std::vector,InputIterator是输入迭代器类型,可以是指向数组的指针、其他容器的迭代器等。 示例: 代码语言:javascript 复制 int arr[]={1,2,3,4,5};std::vector<int>v1(arr,arr+5);// 使用数组中的元素创建 vectorstd::list<int>lst={1,2,3,4,5};st...
std::vectoris one of the container classes in the C++ standard containers library that implements an array.std::vectoris defined in the <vector> header as a class template, with a template type parameter that defines the type of the elements. Thus,std::vector<int>declares astd::vectorwhose...
有鉴于此,C++11新增了模板类array,它也位于名称空间std中。与数组一样,array对象的长度也是固定的,也使用栈(静态内存分配),而不是自由存储区,因此其效率与数组相同,但更方便更安全。使用方法:首先要创建array对象,需要包含头文件array.创建语法如下: 推而广之,下面的声明创建一个名为arr的array对象,它包含n_...
namespacestd{template<classType,classAllocator>classvector;template<classAllocator>classvector<bool>;template<classAllocator>structhash<vector<bool, Allocator>>;// TEMPLATE FUNCTIONStemplate<classType,classAllocator>booloperator== (constvector<Type, Allocator>&left,constvector<Type, Allocator>&right);templat...
// vector_bool_ref_op_assign.cpp// compile with: /EHsc#include<vector>#include<iostream>#include<string>usingnamespacestd;template<typenameC>voidprint(conststring& s,constC& c){cout<< s;for(constauto& e : c) {cout<< e <<" "; }cout<<endl; }intmain(){cout<< boolalpha;vector<boo...
Yet another protocol library like google protocol buffers , but simple and fast. C libzmq Public Forked from zeromq/libzmq ZeroMQ core engine in C++, implements ZMTP/3.0 C++ twemproxy Public Forked from twitter/twemproxy A fast, light-weight proxy for memcached and redis C 2 co...