Summary, 2 of 2

• Key classes and roles:

List         Iterable
Array        Iterator
Parcel       ListIter
Positional   MapIter
Range        GatherIter
Nil

• Contexts:
• list context - interpolates Iterables
• flat context - also interpolates Parcels
• item context - prevents flattening
• lol context - creates lists-of-lists
• hash context

• → Questions?