??? ? ??? ????. ??? ??? ??? ?????, ????? ??? ? ??? ??? ???? ???? add? ??? ????. ??? ?? ?? ??? ??? ???? ??? ??? ? ????. Add()? ?? ???? ??? ?????? ??? ???? ? ??? ????.
??? ??? ??? ???? ?? ????. ???? ????? ??? ???? ?? ???? ?? ?? ?? ???? ???? ??? ??? ???? ??????
????
1
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Observable.subscribe? ?? ??? ???? Subscription.add? ??? ??? ? ?? ??? ????? ??? ???? ?????.
Observer.complete? ?? ??? ???? ?? Observable? ??? ? ?????.
??? ??? ?? .add()? ??? ??? ?? ????? ????? ????? ? ? ?????.
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