Digits.Digits.is_zero: def of bend-trace-context@0.2.0.0
Import: import bend-trace-context@0.2.0.0/src/digits.bend as Digits
Lines 45-53 of bend-trace-context@0.2.0.0/src/digits.bend: https://jend.leeeet.dev/read.txt?path=bend-trace-context@0.2.0.0/src/digits.bend&start_line=45&end_line=53

import Base
import bend-trace-context@0.2.0.0/src/hex.bend as Hex

# Whether every digit is 0. The empty sequence counts as zero.
def Digits.is_zero(n: Nat, digits: Digits(n)) -> Bool:
  match n:
    case 0n:
      True{}
    case 1n+p:
      match digits:
        case DCon{head, tail}:
          Bool.and(Hex.Digit.is_zero(head), Digits.is_zero(p, tail))

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=bend-trace-context@0.2.0.0/src/digits.bend&name=Digits
  https://jend.leeeet.dev/definition.txt?path=bend-trace-context@0.2.0.0/src/digits.bend&name=Digits.Con
  https://jend.leeeet.dev/definition.txt?path=bend-trace-context@0.2.0.0/src/hex.bend&name=Digit.is_zero