• Page 36 (lin no 7):
  The output does not change: Observer 1: Alpha Observer 1: Beta Observer 1: Gamma Observer 2: Alpha Observer 2: Beta Observer 2: Gamma should be The output looks as follows: Observer 1: Alpha Observer 1: Beta Observer 1: Gamma Observer 2: 5 Observer 2: 5

• Page 56:

  A given Maybe will only emit 0 or 1 emissions. It will pass the possible emission to onSuccess(), and in either case, it willl call onComplete() when done. Maybe.just() can be used to create a Maybe emitting the single item. Maybe.empty() will create a Maybe that yields no emission:

  should be

  A given Maybe will only emit 0 or 1 emissions. If there is an emission, it will pass it to onSuccess(). Otherwise, it will call onComplete() when done. These events are mutually exclusive for Maybe, so onComplete() won’t be called after onSuccess().

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