Deque.Deque.split: def of bend-kit-collections@0.1.4.1
Import: import bend-kit-collections@0.1.4.1/deque.bend as Deque
Lines 61-72 of bend-kit-collections@0.1.4.1/deque.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-collections@0.1.4.1/deque.bend&start_line=61&end_line=72

import Base

# the first n elements, and the rest
def Deque.split(a, -A: Kind(a), n: Nat, xs: List<a, A>) ->
  List<a, A> & List<a, A>:
  match n:
    case 0n:
      (Nil{}, xs)
    case 1n+p:
      match xs:
        case Nil{}:
          (Nil{}, Nil{})
        case h <> t:
          Deque.split.put(a, A, h, Deque.split(a, A, p, t))

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=bend-kit-collections@0.1.4.1/deque.bend&name=Deque.split.put