applied suggestions

Documentation/Examples.md

@@ -136,7 +136,7 @@ self.usernameOutlet.rx.text
  // Convenience for constructing synchronous result.
  // In case there is mixed synchronous and asynchronous code inside the same
  // method, this will construct an async result that is resolved immediately.
- return Observable.just(Availability.invalid(message: "Username can't be empty."))
+ return Observable.just(.invalid(message: "Username can't be empty."))
  }
 
  // ...
@@ -150,10 +150,10 @@ self.usernameOutlet.rx.text
  return API.usernameAvailable(username)
  .map { available in
  if available {
- return Availability.available(message: "Username available")
+ return .available(message: "Username available")
  }
  else {
- return Availability.taken(message: "Username already taken")
+ return .taken(message: "Username already taken")
  }
  }
  // use `loadingValue` until server responds
@@ -168,9 +168,9 @@ self.usernameOutlet.rx.text
 // Now we need to bind that to the user interface somehow.
 // Good old `subscribe(onNext:)` can do that.
 // That's the end of `Observable` chain.
- .subscribe(onNext: { validity in
- self.errorLabel.textColor = validationColor(validity)
- self.errorLabel.text = validity.message
+ .subscribe(onNext: { [weak self] validity in
+ self?.errorLabel.textColor = validationColor(validity)
+ self?.errorLabel.text = validity.message
  })
 // This will produce a `Disposable` object that can unbind everything and cancel
 // pending async operations.