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operator-(ranges::zip_transform_view::sentinel)

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Ranges library
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(C++23)

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


 
 
template< bool OtherConst >

    requires std::sized_sentinel_for</*zentinel*/<Const>, /*ziperator*/<OtherConst>>
friend constexpr ranges::range_difference_t</*maybe-const*/<OtherConst, /*InnerView*/>>

    operator-( const /*iterator*/<OtherConst>& x, const /*sentinel*/& y );
(1) (since C++23)
template< bool OtherConst >

    requires std::sized_sentinel_for</*zentinel*/<Const>, /*ziperator*/<OtherConst>>
friend constexpr ranges::range_difference_t</*maybe-const*/<OtherConst, /*InnerView*/>>

    operator-( const /*sentinel*/& y, const /*iterator*/<OtherConst>& x );
(2) (since C++23)

Computes the distance between the underlying iterator of x and the underlying sentinel of y.

These function templates are not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when zip_transform_view::sentinel is an associated class of the arguments.

[edit] Parameters

x - an iterator
y - a sentinel

[edit] Return value

Let inner_ denote the underlying iterator or sentinel respectively.

1) x.inner_ - y.inner_
2) y.inner_ - x.inner_