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

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Ranges library
Range adaptors
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_ ; .

This function is 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.

Parameters

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

Return value

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

Example

See also

advances or decrements the underlying iterator
(public member function)