operator+,-(ranges::cartesian_product_view::iterator)
friend constexpr /*iterator*/ operator+( const /*iterator*/& i,
difference_type n )
requires /*cartesian-product-is-random-access*/<Const, First, Vs...>;
| (1) | (since C++23) |
friend constexpr /*iterator*/ operator+( difference_type n,
const /*iterator*/& i )
requires /*cartesian-product-is-random-access*/<Const, First, Vs...>;
| (2) | (since C++23) |
friend constexpr /*iterator*/ operator-( const /*iterator*/& i,
difference_type n )
requires /*cartesian-product-is-random-access*/<Const, First, Vs...>;
| (3) | (since C++23) |
friend constexpr difference_type operator-( const /*iterator*/& i,
const /*iterator*/& j )
requires
/*cartesian-is-sized-sentinel*/<Const, iterator_t, First, Vs...>;
| (4) | (since C++23) |
friend constexpr difference_type operator-( const /*iterator*/& i,
std::default_sentinel_t )
requires
/*cartesian-is-sized-sentinel*/<Const, ranges::sentinel_t, First, Vs...>;
| (5) | (since C++23) |
friend constexpr difference_type operator-( std::default_sentinel_t s,
const /*iterator*/& i )
requires
/*cartesian-is-sized-sentinel*/<Const, ranges::sentinel_t, First, Vs...>;
| (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:
5) Let returni.distance_from(j.current_);./*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 asranges::end(std::get<0>(i.parent_->bases_)); -
std::get<N>(/*end-tuple*/)has the same value asranges::begin(std::get<N>(i.parent_->bases_))for every integer1 ≤ N ≤ sizeof...(Vs).
returni.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> is an associated class of the arguments.
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
See also
| advances or decrements the underlying iterator (public member function) |
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