Function riker_patterns::ask::ask

pub fn ask<Msg, Ctx, T, M>(
    ctx: &Ctx, 
    receiver: &T, 
    msg: M
) -> Box<Future<Item = Msg, Error = Canceled> + Send> where
    Msg: Message,
    M: Into<ActorMsg<Msg>>,
    Ctx: TmpActorRefFactory<Msg = Msg> + ExecutionContext,
    T: Tell<Msg = Msg>,