def read_taken
bendvy-ecs-core@0.1.0.4 · machine.bend:141
import bendvy-ecs-core@0.1.0.4/machine.bend as Machine
import Base
import bendvy-ecs-core@0.1.0.4/deferred_command.bend as Deferred
import bendvy-ecs-core@0.1.0.4/trace_facts.bend as TraceFacts
import transaction.bend as Tx
141def read_taken(~S: Data,~M: Data,~V: Data,~W: Type,~E: Data,
142 pair: W & Slot<S,M,V>,undo: List<&1,(W -> W)>,commands:List<&1,Deferred.Command<W>>,events: List<&2,E>,trace:TraceFacts.State) -> Tx.Tx<W,E> & Slot<S,M,V>:
143 match pair:
144 case (world,slot): (Tx.Tx{world,undo,commands,events,trace},slot)