EntityAllocator.keep: def of bendvy-ecs-core@0.1.0.3
Import: import bendvy-ecs-core@0.1.0.3/entity_allocator.bend as EntityAllocator
Lines 52-55 of bendvy-ecs-core@0.1.0.3/entity_allocator.bend: https://jend.leeeet.dev/read.txt?path=bendvy-ecs-core@0.1.0.3/entity_allocator.bend&start_line=52&end_line=55

import Base
import entity_key.bend as K

def keep(same:Bool,head:K.Key,rest:List<&2,K.Key>) -> List<&2,K.Key>:
  match same:
    case True{}:rest
    case False{}:head <> rest

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.3/entity_key.bend&name=Key