Defs.nth4: def of lawful-words@0.1.0.0
Import: import lawful-words@0.1.0.0/defs.bend as Defs
Lines 35-49 of lawful-words@0.1.0.0/defs.bend: https://jend.leeeet.dev/read.txt?path=lawful-words@0.1.0.0/defs.bend&start_line=35&end_line=49

import Base

# The j-th of four values (j = 0 to 3; b3 from 3 up).
def nth4(j: Nat, b0: U32, b1: U32, b2: U32, b3: U32) -> U32:
  match j:
    case 0n:
      b0
    case 1n+p:
      match p:
        case 0n:
          b1
        case 1n+q:
          match q:
            case 0n:
              b2
            case 1n+t:
              b3

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32