def num.lead.digit
import emerging-eztoml@0.9.0.0/main.bend as EmergingEztomlimport Base
1378# a first digit
1379def num.lead.digit(digit: Bool, st: Num, +cc: Char) -> Num:
1380 match digit:
1381 case True{}:
1382 num.digit(st, cc, NDig{})
1383 case False{}:
1384 num.bad(st, "invalid number")