public SakuraEvent <T> RemoveListener(SakuraAction <T> action)
{
var actions = new List <SakuraAction <T> >(listeners);
actions.Remove(action);
return(new SakuraEvent <T>(actions));
}
public void Unsubscribe(SakuraAction <int> action)
{
onUpdate = onUpdate.RemoveListener(action);
}
public void Subscribe(SakuraAction <int> action)
{
onUpdate = onUpdate.AddListener(action);
}