Standard library header <vector>

 

C++

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Concepts

Utilities library

Strings library

Containers library

Algorithms library

Iterators library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Technical Specifications

 

Standard Library header files

Language Support
<cstddef> <limits> <climits> <cfloat> <cstdint> <new> <typeinfo> <exception> <ciso646>	<initializer_list> <csignal> <csetjmp> <cstdalign> <cstdarg> <cstdbool> <cstdlib> <ctime>
Diagnostics
<stdexcept> <cassert>	<cerrno> <system_error>
General utilities
<utility> <tuple> <bitset> <memory> <cstdlib> <cstring> <functional>	<type_traits> <ratio> <chrono> <ctime> <scoped_allocator> <typeindex>
Strings
<string> <cctype> <cwctype> <cstring>	<cwchar> <cstdlib> <cuchar>
Localization
<locale> <codecvt> <clocale>

Containers
<array> <deque> <forward_list> <list> <vector>	<map> <set> <unordered_map> <unordered_set> <queue> <stack>
Iterators
<iterator>
Algorithms
<algorithm>	<cstdlib>
Numerics
<cfenv> <complex> <random> <valarray>	<numeric> <cmath> <ctgmath> <cstdlib>
Input/Output
<iosfwd> <iostream> <ios> <streambuf> <istream> <ostream>	<iomanip> <sstream> <fstream> <cstdio> <cinttypes>
Regular expressions
<regex>
Thread support
<thread> <mutex> <atomic>	<shared_mutex> <condition_variable> <future>

 

This header is part of the containers library.

Includes
<initializer_list>(C++11)
Classes
vector	dynamic contiguous array (class template)
vector<bool>	space-efficient dynamic bitset (class template specialization)
std::hash<std::vector<bool>> (C++11)	hash support for std::vector<bool> (class template specialization)
Functions
operator==operator!=operator<operator<=operator>operator>=	lexicographically compares the values in the vector (function template)
std::swap(std::vector)	specializes the std::swap algorithm (function template)

Synopsis

#include <initializer_list>
namespace std {
    template <class T, class Allocator = allocator<T> > class vector;
 
    template <class T, class Allocator>
        bool operator==(const vector<T,Allocator>& x,const vector<T,Allocator>& y);
    template <class T, class Allocator>
        bool operator< (const vector<T,Allocator>& x,const vector<T,Allocator>& y);
    template <class T, class Allocator>
        bool operator!=(const vector<T,Allocator>& x,const vector<T,Allocator>& y);
    template <class T, class Allocator>
        bool operator> (const vector<T,Allocator>& x,const vector<T,Allocator>& y);
    template <class T, class Allocator>
        bool operator>=(const vector<T,Allocator>& x,const vector<T,Allocator>& y);
    template <class T, class Allocator>
        bool operator<=(const vector<T,Allocator>& x,const vector<T,Allocator>& y);
 
    template <class T, class Allocator>
        void swap(vector<T,Allocator>& x, vector<T,Allocator>& y);
 
    template <class Allocator> class vector<bool,Allocator>;
 
    // hash support
    template <class T> struct hash;
    template <class Allocator> struct hash<vector<bool, Allocator> >;
}

Class std::vector

template <class T, class Allocator = allocator<T> >
class vector {
public:
    // types:
    typedef value_type&                                         reference;
    typedef const value_type&                                   const_reference;
    typedef /*implementation-defined*/                          iterator;
    typedef /*implementation-defined*/                          const_iterator; 
    typedef /*implementation-defined*/                          size_type;
    typedef /*implementation-defined*/                          difference_type;
    typedef T                                                   value_type;
    typedef Allocator                                           allocator_type;
    typedef typename allocator_traits<Allocator>::pointer       pointer;
    typedef typename allocator_traits<Allocator>::const_pointer const_pointer;
    typedef std::reverse_iterator<iterator>                     reverse_iterator;
    typedef std::reverse_iterator<const_iterator>               const_reverse_iterator;
 
    // construct/copy/destroy:
    explicit vector(const Allocator& = Allocator());
    explicit vector(size_type n);
    vector(size_type n, const T& value,const Allocator& = Allocator());
    template <class InputIterator>
        vector(InputIterator first, InputIterator last,const Allocator& = Allocator());
    vector(const vector<T,Allocator>& x);
    vector(vector&&);
    vector(const vector&, const Allocator&);
    vector(vector&&, const Allocator&);
    vector(initializer_list<T>, const Allocator& = Allocator());
 
    ~vector();
    vector<T,Allocator>& operator=(const vector<T,Allocator>& x);
    vector<T,Allocator>& operator=(vector<T,Allocator>&& x);
    vector& operator=(initializer_list<T>);
    template <class InputIterator>
        void assign(InputIterator first, InputIterator last);
    void assign(size_type n, const T& t);
    void assign(initializer_list<T>);
    allocator_type get_allocator() const noexcept;
 
    // iterators:
    iterator                begin() noexcept;
    const_iterator          begin() const noexcept;
    iterator                end() noexcept;
    const_iterator          end() const noexcept;
 
    reverse_iterator        rbegin() noexcept;
    const_reverse_iterator  rbegin() const noexcept;
    reverse_iterator        rend() noexcept;
    const_reverse_iterator  rend() const noexcept;
 
    const_iterator          cbegin() noexcept;
    const_iterator          cend() noexcept;
    const_reverse_iterator  crbegin() const noexcept;
    const_reverse_iterator  crend() const noexcept;
 
    // capacity:
    size_type size() const noexcept;
    size_type max_size() const noexcept;
    void      resize(size_type sz);
    void      resize(size_type sz, const T& c);
    size_type capacity() const noexcept;
    bool      empty() const noexcept;
    void      reserve(size_type n);
    void      shrink_to_fit();
 
    // element access:
    reference       operator[](size_type n);
    const_reference operator[](size_type n) const;
    reference       at(size_type n);
    const_reference at(size_type n) const;
    reference       front();
    const_reference front() const;
    reference       back();
    const_reference back() const;
 
    //data access
    T*       data() noexcept;
    const T* data() const noexcept;
 
    // modifiers:
    template <class... Args> void emplace_back(Args&&... args);
    void push_back(const T& x);
    void push_back(T&& x);
    void pop_back();
 
    template <class... Args> iterator emplace(const_iterator position, Args&&... args);
    iterator insert(const_iterator position, const T& x);
    iterator insert(const_iterator position, T&& x);
    iterator insert(const_iterator position, size_type n, const T& x);
    template <class InputIterator>
        iterator insert (const_iterator position, InputIterator first, 
                         InputIterator last);
    iterator insert(const_iterator position, initializer_list<T>);
 
    iterator erase(const_iterator position);
    iterator erase(const_iterator first, const_iterator last);
    void     swap(vector<T,Allocator>&);
    void     clear() noexcept;
};

Specialization std::vector<bool>

template <class bool, class Allocator = allocator<bool> >
class vector {
public:
    // types:
    typedef bool                                                const_reference;
    typedef /*implementation-defined*/                          iterator;
    typedef /*implementation-defined*/                          const_iterator; 
    typedef /*implementation-defined*/                          size_type;
    typedef /*implementation-defined*/                          difference_type;
    typedef bool                                                value_type;
    typedef Allocator                                           allocator_type;
    typedef /*implementation-defined*/                          pointer;
    typedef /*implementation-defined*/                          const_pointer;
    typedef std::reverse_iterator<iterator>                     reverse_iterator;
    typedef std::reverse_iterator<const_iterator>               const_reverse_iterator;
 
    // bit reference:
    class reference {
        friend class vector;
        reference() noexcept;
    public:
        ~reference();
        operator bool() const noexcept;
        reference& operator=(const bool x) noexcept;
        reference& operator=(const reference& x) noexcept;
        void flip() noexcept; // flips the bit
    };
 
    // construct/copy/destroy:
    explicit vector(const Allocator& = Allocator());
    explicit vector(size_type n);
    vector(size_type n, const bool& value,const Allocator& = Allocator());
    template <class InputIterator>
        vector(InputIterator first, InputIterator last,const Allocator& = Allocator());
    vector(const vector<bool,Allocator>& x);
    vector(vector&&);
    vector(const vector&, const Allocator&);
    vector(vector&&, const Allocator&);
    vector(initializer_list<bool>, const Allocator& = Allocator());
 
    ~vector();
    vector<bool,Allocator>& operator=(const vector<bool,Allocator>& x);
    vector<bool,Allocator>& operator=(vector<bool,Allocator>&& x);
    vector& operator=(initializer_list<bool>);
    template <class InputIterator>
        void assign(InputIterator first, InputIterator last);
    void assign(size_type n, const bool& t);
    void assign(initializer_list<bool>);
    allocator_type get_allocator() const noexcept;
 
    // iterators:
    iterator                begin() noexcept;
    const_iterator          begin() const noexcept;
    iterator                end() noexcept;
    const_iterator          end() const noexcept;
 
    reverse_iterator        rbegin() noexcept;
    const_reverse_iterator  rbegin() const noexcept;
    reverse_iterator        rend() noexcept;
    const_reverse_iterator  rend() const noexcept;
 
    const_iterator          cbegin() noexcept;
    const_iterator          cend() noexcept;
    const_reverse_iterator  crbegin() const noexcept;
    const_reverse_iterator  crend() const noexcept;
 
    // capacity:
    size_type size() const noexcept;
    size_type max_size() const noexcept;
    void      resize(size_type sz);
    void      resize(size_type sz, const bool& c);
    size_type capacity() const noexcept;
    bool      empty() const noexcept;
    void      reserve(size_type n);
    void      shrink_to_fit();
 
    // element access:
    reference       operator[](size_type n);
    const_reference operator[](size_type n) const;
    reference       at(size_type n);
    const_reference at(size_type n) const;
    reference       front();
    const_reference front() const;
    reference       back();
    const_reference back() const;
 
    // modifiers:
    template <class... Args> void emplace_back(Args&&... args);
    void push_back(const bool& x);
    void push_back(bool&& x);
    void pop_back();
 
    template <class... Args> iterator emplace(const_iterator position, Args&&... args);
    iterator insert(const_iterator position, const bool& x);
    iterator insert(const_iterator position, bool&& x);
    iterator insert(const_iterator position, size_type n, const bool& x);
    template <class InputIterator>
        iterator insert (const_iterator position, InputIterator first, 
                         InputIterator last);
    iterator insert(const_iterator position, initializer_list<bool>);
 
    iterator erase(const_iterator position);
    iterator erase(const_iterator first, const_iterator last);
    void     swap(vector<bool,Allocator>&);
    void     flip() noexcept;// flips all bits
    void     clear() noexcept;
};