World.register_checked: def of bendvy-ecs-core@0.1.0.3
Import: import bendvy-ecs-core@0.1.0.3/world.bend as World
Lines 289-292 of bendvy-ecs-core@0.1.0.3/world.bend: https://jend.leeeet.dev/read.txt?path=bendvy-ecs-core@0.1.0.3/world.bend&start_line=289&end_line=292

import Base

def register_checked(~S: Data,~C: Type,~R: Type,~E: Data,available: Bool,world: World<S,C,R,E>,+name: String,+access: List<&2,String>) -> World<S,C,R,E> & Registration:
  match available world:
    case False{} world: (world,RegistrationRejected{SystemIdExhausted{}})
    case True{} World{+namespace,allocator,store,resource,+events,pending,+registrations,+nextSystemId,+clock,lifecycle}: (World{namespace,allocator,store,resource,events,pending,RegistrationMeta{nextSystemId,name,access} <> registrations,(nextSystemId + 1 : U32),clock,lifecycle},Registered{nextSystemId})

Uses (11):
  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=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.add
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.3/world.bend&name=Registration
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.3/world.bend&name=RegistrationMeta
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.3/world.bend&name=World
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.3/world.bend&name=WorldError