std::ranges::enumerate_view<V>::iterator<Const>::operator++,--,+=,-=

 

C++

Compiler support

Freestanding and hosted

Language

Standard library

Standard library headers

Named requirements

Feature test macros (C++20)

Language support library

Concepts library (C++20)

Diagnostics library

Memory management library

Metaprogramming library (C++11)

General utilities library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Strings library

Text processing library

Numerics library

Date and time library

Input/output library

Filesystem library (C++17)

Concurrency support library (C++11)

Execution control library (C++26)

Technical specifications

Symbols index

External libraries

 

Ranges library

Range access begin cbegin   end cend rbegin crbegin   rend crend size ssize   data cdata reserve_hint (C++26)   empty

Range conversions std::from_range_t std::from_range (C++23)(C++23)     to (C++23)

Dangling iterator handling dangling borrowed_iterator_t borrowed_subrange_t

Range primitives
range_size_trange_difference_trange_value_t elements_of (C++23)	iterator_tconst_iterator_tsentinel_tconst_sentinel_t (C++23)(C++23)	range_reference_trange_const_reference_trange_rvalue_reference_trange_common_reference_t (C++23)

Range concepts
range borrowed_range    common_range	sized_range viewable_range    view	input_range output_range forward_range	bidirectional_range    random_access_range contiguous_range	approximately_sized_range (C++26) constant_range (C++23)

Views
view_interface	subrange

Range factories
empty_viewviews::empty	single_viewviews::single	basic_istream_viewviews::istream	iota_viewviews::iota	repeat_viewviews::repeat (C++23)(C++23)

Range adaptors
views::all_tviews::all as_rvalue_viewviews::as_rvalue (C++23)(C++23)   filter_viewviews::filter transform_viewviews::transform take_viewviews::take take_while_viewviews::take_while common_viewviews::common views::counted to_input_viewviews::to_input (C++26)(C++26)	ref_view drop_viewviews::drop drop_while_viewviews::drop_while lazy_split_viewviews::lazy_split split_viewviews::split join_viewviews::join join_with_viewviews::join_with (C++23)(C++23)   concat_viewviews::concat (C++26)(C++26) cache_latest_viewviews::cache_latest (C++26)(C++26)	owning_view reverse_viewviews::reverse as_const_viewviews::as_const (C++23)(C++23) elements_viewviews::elements keys_viewviews::keys values_viewviews::values enumerate_viewviews::enumerate (C++23)(C++23) zip_viewviews::zip (C++23)(C++23) zip_transform_viewviews::zip_transform (C++23)(C++23)	adjacent_viewviews::adjacent (C++23)(C++23) views::pairwise (C++23) adjacent_transform_viewviews::adjacent_transform (C++23)(C++23) views::pairwise_transform (C++23) chunk_viewviews::chunk (C++23)(C++23) slide_viewviews::slide (C++23)(C++23) chunk_by_viewviews::chunk_by (C++23)(C++23) stride_viewviews::stride (C++23)(C++23) cartesian_product_viewviews::cartesian_product (C++23)(C++23)

Range generators std::generator (C++23)

Range adaptor closure objects range_adaptor_closure (C++23)

Range adaptor objects

Helper items
copyable-box movable-box (until C++23)  (C++23)	simple-view non-propagating-cache

 

std::ranges::enumerate_view

Member functions

enumerate_view::enumerate_view

enumerate_view::base

enumerate_view::begin

enumerate_view::end

enumerate_view::size

enumerate_view::reserve_hint (C++26)

Deduction guides

Nested classes

Iterator

enumerate_view::iterator::iterator

enumerate_view::iterator::base

enumerate_view::iterator::index

enumerate_view::iterator::operator*

enumerate_view::iterator::operator[]

enumerate_view::iterator::operator++ enumerate_view::iterator::operator++(int) enumerate_view::iterator::operator-- enumerate_view::iterator::operator--(int) enumerate_view::iterator::operator+= enumerate_view::iterator::operator-=

operator==(enumerate_view::iterator) operator<=>(enumerate_view::iterator)

operator+(enumerate_view::iterator) operator-(enumerate_view::iterator)

iter_move(enumerate_view::iterator)

Sentinel

enumerate_view::sentinel::sentinel

enumerate_view::sentinel::base

operator==(enumerate_view::iterator,enumerate_view::sentinel)

operator-(enumerate_view::iterator,enumerate_view::sentinel)

 

constexpr /*iterator*/& operator++();	(1)	(since C++23)
constexpr void operator++( int );	(2)	(since C++23)
constexpr /*iterator*/ operator++( int )     requires ranges::forward_range<Base>;	(3)	(since C++23)
constexpr /*iterator*/& operator--()     requires ranges::bidirectional_range<Base>;	(4)	(since C++23)
constexpr /*iterator*/ operator--( int )     requires ranges::bidirectional_range<Base>;	(5)	(since C++23)
constexpr /*iterator*/& operator+=( difference_type n )     requires ranges::random_access_range<Base>;	(6)	(since C++23)
constexpr /*iterator*/& operator-=( difference_type n )     requires ranges::random_access_range<Base>;	(7)	(since C++23)

Increments or decrements the iterator.

Let current_ be the underlying iterator and pos_ be the underlying index.

1) Equivalent to ++current_; ++pos_; return *this;

2) Equivalent to ++current_;

3) Equivalent to auto tmp = *this; ++*this; return tmp;

4) Equivalent to --current_; --pos_; return *this;

5) Equivalent to auto tmp = *this; --*this; return tmp;

6) Equivalent to current_ += n; pos_ += n; return *this;

7) Equivalent to current_ -= n; pos_ -= n; return *this;

Parameters

n

-

position relative to current location

Return value

1,4,6,7) *this

2) (none)

3,5) a copy of *this that was made before the change

See also

operator+operator- (C++23)

performs iterator arithmetic (function)

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