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

 

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

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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)

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view_interface	subrange

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

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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)

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copyable-box movable-box (bis C++23)  (C++23)	simple-view non-propagating-cache

 

std::ranges::chunk_view

Memberfunktionen
chunk_view::chunk_view
chunk_view::base
chunk_view::begin
chunk_view::end
chunk_view::size
Klassen für input_ranges Deduction Guides outer-iterator chunk_view::outer-iterator::outer-iterator chunk_view::outer-iterator::operator= chunk_view::outer-iterator::operator* chunk_view::outer-iterator::operator++ chunk_view::outer-iterator::operator++(int) operator==(chunk_view::outer-iterator) operator-(chunk_view::outer-iterator) outer-iterator::value_type chunk_view::outer-iterator::value_type::value_type   chunk_view::outer-iterator::value_type::begin chunk_view::outer-iterator::value_type::end chunk_view::outer-iterator::value_type::size inner-iterator chunk_view::inner-iterator::inner-iterator chunk_view::inner-iterator::operator= chunk_view::inner-iterator::base chunk_view::inner-iterator::operator* chunk_view::inner-iterator::operator++ chunk_view::inner-iterator::operator++(int) operator==(chunk_view::inner-iterator) operator-(chunk_view::inner-iterator) iter_move(chunk_view::inner-iterator) iter_swap(chunk_view::inner-iterator)	Klassenvorlage für forward_ranges iterator chunk_view::iterator::iterator chunk_view::iterator::base chunk_view::iterator::operator* chunk_view::iterator::operator[] chunk_view::iterator::operator++ chunk_view::iterator::operator++(int) chunk_view::iterator::operator-- chunk_view::iterator::operator--(int) chunk_view::iterator::operator+= chunk_view::iterator::operator-= operator==(chunk_view::iterator) operator<(chunk_view::iterator) operator>(chunk_view::iterator) operator<=(chunk_view::iterator) operator>=(chunk_view::iterator) operator<=>(chunk_view::iterator) operator+(chunk_view::iterator) operator-(chunk_view::iterator)

 

constexpr /*iterator*/& operator++();	(1)	(seit C++23)
constexpr /*Iterator*/ operator++( int );	(2)	(seit C++23)
constexpr /*Iterator*/& operator--()     requires ranges::bidirectional_range<Base>;	(3)	(seit C++23)
constexpr /*Iterator*/ operator--( int )     requires ranges::bidirectional_range<Base>;	(4)	(seit C++23)
constexpr /*iterator*/& operator+=( difference_type x )     requires ranges::random_access_range<Base>;	(5)	(seit C++23)
constexpr /*iterator*/& operator-=( difference_type x )     requires ranges::random_access_range<Base>;	(6)	(seit C++23)

Erweitert oder verringert den Iterator.

Seien current_, end_ und n_ die zugrundeliegenden Datenelemente von chunk_view::iterator.

1) Äquivalent zu

missing_ = ranges::advance(current_, n_, end_);
return *this;

Vor dem Aufruf muss der Ausdruck current_ != end_ true sein, andernfalls ist das Verhalten undefiniert.

2) Äquivalent zu: auto tmp = *this; ++*this; return tmp;.

3) Äquivalent zu

ranges::advance(current_, missing_ - n_);
missing_ = 0;
return *this;

4) Äquivalent zu: auto tmp = *this; --*this; return tmp;.

5) Äquivalent zu

if (x > 0)
{
    ranges::advance(current_, n_ * (x - 1));
    missing_ = ranges::advance(current_, n_, end_);
}
else if (x < 0)
{
    ranges::advance(current_, n_ * x + missing_);
    missing_ = 0;
}
return *this;

Wenn x positiv ist, muss vor dem Aufruf der Ausdruck ranges::distance(current_, end_) > n_ * (x - 1) true sein (d. h. informell, der angeforderte Chunk sollte "innerhalb" der zugrundeliegenden Sequenz liegen). Wenn x negativ ist, ist diese Vorbedingung immer erfüllt.

6) Äquivalent zu: return *this += -x;.

Parameter

x

-

eine Position relativ zur aktuellen Position

Rückgabewert

1,3,5,6) *this

2,4) eine Kopie von *this, die vor der Änderung erstellt wurde

Siehe auch

operator+operator- (C++23)

führt Iterator-Arithmetik durch (Funktion)