Chacha8rand.put: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/spec/math/random/chacha8rand.bend as Chacha8rand
Lines 45-52 of bend-collections-laws-crypto@1.0.0.0/spec/math/random/chacha8rand.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/math/random/chacha8rand.bend&start_line=45&end_line=52

import Base

def put(xs: List<&2, U32>, i: Nat, y: U32) -> List<&2, U32>:
  match xs i:
    case Nil{} _:
      Nil{}
    case Con{x, rest} 0n:
      Con{y, rest}
    case Con{x, rest} 1n+p:
      Con{x, put(rest, p, y)}

Uses (3):
  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=U32