operator+,-(ranges::cartesian_product_view::iterator)
From cppreference.com
< cpp | ranges | cartesian product view | iterator
|
friend
constexpr
/*iterator*/ operator+
(
const
/*iterator*/
& i,
difference_type n ) |
(1) | (since C++23) |
|
friend
constexpr
/*iterator*/ operator+
( difference_type n,
const /*iterator*/& i ) |
(2) | (since C++23) |
|
friend
constexpr
/*iterator*/ operator-
(
const
/*iterator*/
& i,
difference_type n ) |
(3) | (since C++23) |
|
friend
constexpr difference_type operator-
(
const
/*iterator*/
& i,
const /*iterator*/& j ) |
(4) | (since C++23) |
|
friend
constexpr difference_type operator-
(
const
/*iterator*/
& i,
std::default_sentinel_t ) |
(5) | (since C++23) |
|
friend
constexpr difference_type operator-
(
std::default_sentinel_t s,
const /*iterator*/& i ) |
(6) | (since C++23) |
Performs iterator arithmetic or calculates the distance.
Let current_ denote the underlying tuple of iterators and parent_ denote the underlying pointer to cartesian_product_view
1) Equivalent to:
return
/*iterator*/
(i)
+
= n;
2) Equivalent to: return i + n;.
3) Equivalent to:
return
/*iterator*/
(i)
-
= n;
4) Equivalent to:
return i.
distance_from
(j.current_);
5) Let /*end-tuple*/ be an object of a type that is a specialization of tuple, such that:
- std:: get < 0 > ( /*end-tuple*/ ) has the same value as ranges::end (std:: get < 0 > (i.parent_ - >bases_) ) ;
- std:: get <N> ( /*end-tuple*/ ) has the same value as ranges::begin (std:: get <N> (i.parent_ - >bases_) ) for every integer 1 ≤ N ≤ sizeof...(Vs)
distance_from
(/*end-tuple*/);
6) Equivalent to: return -(i - s);
These functions are not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when cartesian_product_view::iterator<Const>
Parameters
| i, j | - | the iterators |
| n | - | the position relative to current location |
| s | - | the sentinel |
Return value
1,2) An incremented iterator.
3) A decremented iterator.
4) A distance between given iterators.
5,6) A distance between given iterator and sentinel.
Example
| This section is incomplete Reason: no example |
See also
| advances or decrements the underlying iterator (public member function) |