Ops.digits_only: def of near-v-framework@0.4.0.0
Import: import near-v-framework@0.4.0.0/domain/architecture/system/release/ops.bend as Ops
Lines 4-10 of near-v-framework@0.4.0.0/domain/architecture/system/release/ops.bend: https://jend.leeeet.dev/read.txt?path=near-v-framework@0.4.0.0/domain/architecture/system/release/ops.bend&start_line=4&end_line=10

import Base

# ---- the hub's rules: a name is 12 to 64 characters of a-z, 0-9 and -; a version is four numbers ----
def digits_only(cs: List<&2, Char>) -> Bool:
  match cs:
    case []:
      True{}
    case c <> rest:
      Char.is_digit(c) && digits_only(rest)

Uses (5):
  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=Char
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Char.is_digit
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List