std::insert_iterator< _Container > Class Template Reference

Inheritance diagram for std::insert_iterator< _Container >:

Public Types
typedef _Container	container_type
using	difference_type = ptrdiff_t
typedef output_iterator_tag	iterator_category
typedef void	pointer
typedef void	reference
typedef void	value_type

Public Member Functions
constexpr	insert_iterator (_Container &__x, _Iter __i)
constexpr insert_iterator &	operator* ()
constexpr insert_iterator &	operator++ ()
constexpr insert_iterator &	operator++ (int)
constexpr insert_iterator &	operator= (const typename _Container::value_type &__value)
constexpr insert_iterator &	operator= (typename _Container::value_type &&__value)

Protected Attributes
_Container *	container
_Iter	iter

Detailed Description

template<typename _Container>
class std::insert_iterator< _Container >

Turns assignment into insertion.

These are output iterators, constructed from a container-of-T. Assigning a T to the iterator inserts it in the container at the iterator's position, rather than overwriting the value at that position.

(Sequences will actually insert a copy of the value before the iterator's position.)

Tip: Using the inserter function to create these iterators can save typing.

Definition at line 900 of file bits/stl_iterator.h.

Member Typedef Documentation

container_type

template<typename _Container >

typedef _Container std::insert_iterator< _Container >::container_type

A nested typedef for the type of whatever container you used.

Definition at line 914 of file bits/stl_iterator.h.

iterator_category

typedef output_iterator_tag std::iterator< output_iterator_tag , void , void , void , void >::iterator_category

inherited

One of the tag types.

Definition at line 130 of file stl_iterator_base_types.h.

pointer

typedef void std::iterator< output_iterator_tag , void , void , void , void >::pointer

inherited

This type represents a pointer-to-value_type.

Definition at line 136 of file stl_iterator_base_types.h.

reference

typedef void std::iterator< output_iterator_tag , void , void , void , void >::reference

inherited

This type represents a reference-to-value_type.

Definition at line 138 of file stl_iterator_base_types.h.

value_type

typedef void std::iterator< output_iterator_tag , void , void , void , void >::value_type

inherited

The type "pointed to" by the iterator.

Definition at line 132 of file stl_iterator_base_types.h.

Constructor & Destructor Documentation

insert_iterator()

template<typename _Container >

constexpr std::insert_iterator< _Container >::insert_iterator ( _Container &  __x, _Iter  __i  )

inlineconstexpr

The only way to create this iterator is with a container and an initial position (a normal iterator into the container).

Definition at line 925 of file bits/stl_iterator.h.

Member Function Documentation

operator*()

template<typename _Container >

constexpr insert_iterator& std::insert_iterator< _Container >::operator* ( )

inlineconstexpr

Simply returns *this.

Definition at line 982 of file bits/stl_iterator.h.

operator++() [1/2]

template<typename _Container >

constexpr insert_iterator& std::insert_iterator< _Container >::operator++ ( )

inlineconstexpr

Simply returns *this. (This iterator does not move.)

Definition at line 988 of file bits/stl_iterator.h.

operator++() [2/2]

template<typename _Container >

constexpr insert_iterator& std::insert_iterator< _Container >::operator++ ( int  )

inlineconstexpr

Simply returns *this. (This iterator does not move.)

Definition at line 994 of file bits/stl_iterator.h.

operator=()

template<typename _Container >

constexpr insert_iterator& std::insert_iterator< _Container >::operator= ( const typename _Container::value_type &  __value )

inlineconstexpr

Parameters

__value

An instance of whatever type container_type::const_reference is; presumably a reference-to-const T for container<T>.

Returns

This iterator, for chained operations.

This kind of iterator maintains its own position in the container. Assigning a value to the iterator will insert the value into the container at the place before the iterator.

The position is maintained such that subsequent assignments will insert values immediately after one another. For example,

// vector v contains A and Z
 
insert_iterator i (v, ++v.begin());
i = 1;
i = 2;
i = 3;
 
// vector v contains A, 1, 2, 3, and Z

Definition at line 962 of file bits/stl_iterator.h.

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The documentation for this class was generated from the following file:

• bits/stl_iterator.h