private static ImmutableList <Guid> ReduceContacts(ImmutableList <Guid> previousState, object action)
{
if (action is ActionOnUser.AddContact a)
{
return(previousState.AddOrCreate(a.newContact.id));
}
return(previousState);
}
private static ImmutableList <MyCircle> CirclesReducer(MyModel parent, ImmutableList <MyCircle> circles, object action)
{
circles = circles.MutateEntries(action, CircleReducer);
if (action is AddCircleAction a)
{
circles = circles.AddOrCreate(a.newCircle);
}
return(circles);
}