{-
Build a list by copying the given element the specified number of times
-}
let replicate
    : Natural → ∀(a : Type) → a → List a
    =   λ(n : Natural)
      → λ(a : Type)
      → λ(x : a)
      → List/build
          a
          (   λ(list : Type)
            → λ(cons : a → list → list)
            → Natural/fold n list (cons x)
          )

let example0 = assert : replicate 9 Natural 1 ≡ [ 1, 1, 1, 1, 1, 1, 1, 1, 1 ]

let example1 = assert : replicate 0 Natural 1 ≡ ([] : List Natural)

in  replicate