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

From cppreference.com
 
 
Ranges library
Range access
Range conversions
(C++23)

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(until C++23)(C++23)


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

Let inner_ denote the underlying iterator.

1,2) Returns the iterator i incremented by n. Equivalent to: return /*iterator*/(*i.parent_, i.inner_ + n);.
3) Returns the iterator i decremented by n. Equivalent to: return /*iterator*/(*i.parent_, i.inner_ - n);.
4) Calculates the distance between i and j. Equivalent to return i.inner_ - j.inner_;.

These functions are not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when zip_transform_view::iterator<Const> is an associated class of the arguments.

Contents

[edit] Parameters

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

[edit] Return value

1,2) /*iterator*/{ inner_ + n }
3) /*iterator*/{ inner_ - n }
4) i.inner_ - j.inner_

[edit] Example

[edit] See also

advances or decrements the underlying iterator
(public member function) [edit]