# operator-(ranges::adjacent_transform_view::sentinel)

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< cpp‎ | ranges‎ | adjacent transform view‎ | sentinel

template< bool OtherConst > requires std::sized_sentinel_for</*inner-sentinel*/<Const>, /*inner-iterator*/<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</*inner-sentinel*/<Const>, /*inner-iterator*/<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 iterator x and the sentinel y.

1) Equivalent to: return x.`inner_``` - y.`inner_`;.
2) Equivalent to: return y.`inner_``` - x.`inner_`;.

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

### Parameters

x | - | the iterator
y | - | the sentinel

### Return value

The distance between iterator and sentinel.

### Example

| This section is incomplete Reason: no example

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