[PATCH] D48348: [ADT] Add zip_longest iterators.

[David Blaikie via Phabricator via llvm-commits]

dblaikie added a comment.

I /think/ this still doesn't meet the iterator requirements (that if "(*i).j" is valid, then "i->j" must be valid too - [input.iterators]p2, Table 95, "a->m is equivalent to (*a).m if a is dereferencable"). I believe the way standard iterators (like istream_iterator) implement this is by having an instance of the value type inside the iterator that has the current value in it, so operator-> can return a pointer to that. Would that be possible/practical?


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D48348/new/

https://reviews.llvm.org/D48348