def clean.all
import ezx@1.11.0.0/src/lock/plan.bend as Planimport Base
336# whether every string in a list can be written as it is
337def clean.all(ss: List<&2, String>) -> Bool:
338 match ss:
339 case []:
340 True{}
341 case h <> t:
342 +rest = clean.all(t)
343 Bool.and(clean(h), rest)