def duplicates

bendvy-ecs-core@0.1.0.4 · feature.bend:57

import bendvy-ecs-core@0.1.0.4/feature.bend as Feature
import Base

57def duplicates(items:List<&2,String>,+seen:List<&2,String>) -> Validation:
58  match items:
59    case []: Valid{}
60    case +name <> rest: repeated(contains(seen,name),name,_ => duplicates(rest,name <> seen))

Uses (5)

Used by (1)