def count_keys
import bendvy-ecs-core@0.1.0.3/entity_allocator.bend as EntityAllocatorimport Base
import entity_key.bend as K
154def count_keys(keys:List<&2,K.Key>) -> Nat:
155 match keys:
156 case []:0n
157 case _ <> rest:1n+count_keys(rest)