operator+,-(ranges::chunk_view::iterator)

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< cpp‎ | ranges‎ | chunk view‎ | iterator
C++
Ranges library
Range adaptors
std::ranges::chunk_view
Member functions
Classes for input_ranges
Deduction guides
outer-iterator
outer-iterator::value_type
inner-iterator
friend constexpr /*iterator*/ operator+ ( const /*iterator*/ & i,

difference_type pos )

    requires ranges::random_access_range <Base> ;
(1) (since C++23)
friend constexpr /*iterator*/ operator+ ( difference_type pos,

const /*iterator*/& i )

    requires ranges::random_access_range <Base> ;
(2) (since C++23)
friend constexpr /*iterator*/ operator- ( const /*iterator*/ & i,

difference_type pos )

    requires ranges::random_access_range <Base> ;
(3) (since C++23)
friend constexpr difference_type operator- ( const /*iterator*/ & i,

const /*iterator*/ & j )
    requires std::sized_sentinel_for < ranges::iterator_t <Base>,

ranges::iterator_t <Base>> ;
(4) (since C++23)
friend constexpr difference_type operator- ( std::default_sentinel_t,

const /*iterator*/ & i )
    requires std::sized_sentinel_for < ranges::sentinel_t <Base>,

ranges::iterator_t <Base>> ;
(5) (since C++23)
friend constexpr difference_type operator- ( const /*iterator*/ & i,

std::default_sentinel_t )
    requires std::sized_sentinel_for < ranges::sentinel_t <Base>,

ranges::iterator_t <Base>> ;
(6) (since C++23)

Performs iterator arithmetic or calculates the distance.

Let current_, end_, n_, and missing_ be the underlying data members.

Equivalent to:

1,2) auto r = i; r + = pos; return r;
3) auto r = i; r - = pos; return r;
4) return (i.current_ - j.current_ + i.missing_ - j.missing_ ) / i.n_ ;
5) return /*div-ceil*/ (i.end_ - i.current_, i.n_ ) ;
6) return -(y - x);

These functions are not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when chunk_view::iterator<Const>

Parameters

i, j - the iterators
pos - the position relative to current location

Return value

1,2) An incremented iterator.
3) A decremented iterator.
4) A distance (in number of elements, i.e. chunks) between given iterators.
5,6) A distance (in number of elements) between given iterator and sentinel.

Example

This section is incomplete
Reason: no example

See also

 advances or decrements the underlying iterator
(public member function)
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