Svg.color.hex.valid: def of gralha-svg-render@0.1.0.1
Import: import gralha-svg-render@0.1.0.1/svg.bend as Svg
Lines 780-785 of gralha-svg-render@0.1.0.1/svg.bend: https://jend.leeeet.dev/read.txt?path=gralha-svg-render@0.1.0.1/svg.bend&start_line=780&end_line=785

import Base
import gralha-text-scan@0.1.0.1/scan.bend as U

def color.hex.valid(s: String) -> Bool:
  match s:
    case SNil{}: True{}
    case SCon{Chr{c}, rest}:
      +ch = c
      (U.digit(ch) || (U32.is_ge(ch, 97) && U32.is_le(ch, 102))) && color.hex.valid(rest)

Uses (8):
  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=Bool.or
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Char
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_ge
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_le
  https://jend.leeeet.dev/definition.txt?path=gralha-text-scan@0.1.0.1/scan.bend&name=digit