-- Pricing-demo corpus (plan 3, Task 3): container round-trips over the
-- two container shapes the pricing demo's classes use -- a `multi`
-- (docs/examples/pricing/types/product.wo's `prices: multi Price`) and a
-- Text-keyed `map` (a SKU->price catalog, using `Text` directly since
-- `SKU` was removed from the language on 2026-08-10). Exercises
-- multi push/count/get and map set/get/has, per docs/plan/oop-vm/
-- 08-builtin-surface.md's builtin table.
class Item {
  n: Int
}

class Catalog {
  items:   multi Item
  by_name: map<Text, Int>
}

fn main() {
  let c = Catalog { items: multi_new(), by_name: map_new() }
  push(c.items, Item { n: 10 })
  push(c.items, Item { n: 20 })
  push(c.items, Item { n: 30 })
  print_int(count(c.items))
  print_int(c.items[1].n)

  set(c.by_name, "mug", 499)
  set(c.by_name, "shirt", 1999)
  print_int(count(c.by_name))
  print_int(c.by_name["mug"])
  print_int(has(c.by_name, "shirt"))
  print_int(has(c.by_name, "hat"))
}