# std::ranges::adjacent_transform_view<V,F,N>::iterator<Const>::operator[]

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< cpp‎ | ranges‎ | adjacent transform view‎ | iterator

constexpr decltype(auto) operator[]( difference_type n ) const requires ranges::random_access_range<Base>; |  | (since C++23)

Returns an element at specified relative location.

Let `parent_` and `inner_` be the data members of the iterator. Equivalent to:

    return apply([&](const auto&... iters) -> decltype(auto)
                 {
                    return invoke(*parent_->fun_, iters[n]...);
                 },
                 inner_.current_);

### Parameters

n | - | position relative to current location

### Return value

The element at displacement n relative to the current location.

### Example

| This section is incomplete Reason: no example

### See also

operator* (C++23) | accesses the element (public member function)

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