DlistIterator.next_checked: def of bend-collections@1.0.0.0
Import: import bend-collections@1.0.0.0/src/containers/dlist_iterator.bend as DlistIterator
Lines 140-142 of bend-collections@1.0.0.0/src/containers/dlist_iterator.bend: https://jend.leeeet.dev/read.txt?path=bend-collections@1.0.0.0/src/containers/dlist_iterator.bend&start_line=140&end_line=142

import Base
import bend-collections@1.0.0.0/src/containers/doubly_linked_list.bend as D
import bend-collections@1.0.0.0/src/containers/internal/dlist_storage.bend as R

def next_checked(~T: Data, it: Iterator<T>, empty: Bool) -> Iterator<T> & Result<&2, &2, Error, T>:
  IT{D.DL{tag, depth, cap, R.DL{owner, fresh, free, count, head, tail, rd, rc, vals, prevs, nexts}, gens}, +n, last, f, i} = it
  forward_finish(~T, tag, depth, cap, gens, owner, fresh, free, count, head, tail, rd, rc, prevs, n, last, f, i, forward_arrays(~T, vals, nexts, n, empty))

Uses (9):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/containers/dlist_iterator.bend&name=Error
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/containers/dlist_iterator.bend&name=Iterator
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/containers/dlist_iterator.bend&name=forward_arrays
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/containers/dlist_iterator.bend&name=forward_finish
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/containers/doubly_linked_list.bend&name=DList
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/containers/internal/dlist_storage.bend&name=DList