std::ranges::chunk_by_view<V,Pred>:: find_next, std::ranges::chunk_by_view<V,Pred>:: find_prev

std::ranges::chunk_by_view::next

Finds the next chunk.

Let base_ and pred_ be appropriate underlying data-members of chunk_by_view

Equivalent to

return ranges::next
(
    ranges::adjacent_find
    (
        current, ranges::end(base_), std::not_fn(std::ref(*pred_))
    ),
    1, ranges::end(base_)
);

The behavior is undefined if pred_.has_value() is false

Used in the following non-static member functions:

• ranges::chunk_by_view::iterator::operator++

Parameters

Return value

An iterator to the next chunk, as described above.

std::ranges::chunk_by_view::prev

Finds the previous chunk.

Let base_ and pred_ be appropriate underlying data-members of chunk_by_view

Returns an iterator i in the range [ ranges::begin(base_) ,  current )

• ranges::adjacent_find (i, current, std::not_fn ( std::ref ( *pred_) ) ) is equal to current
• if i is not equal to ranges::begin(base_), then bool ( std::invoke ( *pred_, * ranges::prev (i), *i) ) is false

The behavior is undefined if before the call to this function current == ranges::begin(base_) or pred_.has_value() != true

Used in the following non-static member functions:

• ranges::chunk_by_view::iterator::operator--

Parameters

Return value

An iterator to the previous chunk, as described above.