OrdinaryConditionComposition.changed_observed: def of bendvy-ecs-core@0.1.0.4
Import: import bendvy-ecs-core@0.1.0.4/ordinary_condition_composition.bend as OrdinaryConditionComposition
Lines 46-50 of bendvy-ecs-core@0.1.0.4/ordinary_condition_composition.bend: https://jend.leeeet.dev/read.txt?path=bendvy-ecs-core@0.1.0.4/ordinary_condition_composition.bend&start_line=46&end_line=50

import Base
import bendvy-ecs-core@0.1.0.4/world.bend as W
import bendvy-ecs-core@0.1.0.4/ordinary_machine_initialization.bend as Init
import bendvy-ecs-core@0.1.0.4/ordinary_machine_condition.bend as Changed

def changed_observed(~S:Data,~K:Data,~V:Data,~R:Type,~take:R -> R & Init.State<S,K,V>,~put:R -> Init.State<S,K,V> -> R,~C:Type,~E:Data,result:Changed.Observed<S,K,V,C,R,E,take,put>) -> Evaluation<W.World<S,C,R,E>,Changed.Instance<S,K,V,C,R,E,take,put>>:
  match result:
    case Changed.Observed{world,instance,Some{value}}:Value{world,instance,value}
    case Changed.Observed{world,instance,None{}}:NoValue{world,instance}
    case Changed.RegistrationRejected{world,instance}:InvalidRegistration{world,instance}

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/ordinary_condition_composition.bend&name=Evaluation
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/ordinary_machine_condition.bend&name=Instance
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/ordinary_machine_condition.bend&name=Observed
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/ordinary_machine_initialization.bend&name=State
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/world.bend&name=World