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iOS 5 App Development Objective C

Subjects : it-skills, apple
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. When an object is removed from an NSMutableArray - that object is sent the message release;...






2. A class inherits all _ from its superclass and can add as many as it wants for its own purposes....






3. When do we need to release our outlets?

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4. Name of the method to be executed






5. A callback is a function that is supplied in advance of an event - and...






6. Any other initializer a class has calls the _ designated initializer....

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7. Reducing details to focus on the core concepts






8. A message is always contained in square brackets - and has three parts






9. Order of the declarations for methods. _ come first - followed by _ - followed by any other methods...






10. A delegate is a pointer to an object with a set of methods the delegate-holder knows how to call. In other words - it's _ from a later created object






11. Inside a method - _ is an implicit local variable. Typically - _ is used so that an object can send a message to itself....






12. Archiving works by creating an instance of _ - which is essentially just a container for data - and placing objects and their data inside it.






13. At the top of any implementation file...






14. Classes describe two things...






15. Dynamic binding means that when we call a certain object's method - and there are several _ of that method - the right one is figured out at runtime.






16. It's class is sent the message alloc - which creates an instance of that class and returns a pointer to it - and then that instance is sent the message init - which gives its instance variables initial values.






17. UIViewController has several methods that get called at certain times...






18. Only exists within the statement block there defined - outside of the block is fine






19. Class methods do not operate on an _ or have any access to _ variables....






20. To get the full path for a directory in the sandbox - you use the _ NSSearchPathForDirectoriesInDomains.






21. Categories are an Objective C way to add _ to an existing class without subclassing






22. In object oriented languages - we call methods that get and set instance variables

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23. [Instance Variables] The code it gets from its class and in a sense is shared with all other instances of that class - but the _ belong to it alone.






24. Defining variables - three parts...






25. Each _ has a 'designated' initializer method....






26. When an object is added to a NSMutableArray - that object is sent the message to retain;...






27. UIView - designated initializer...






28. Three ways instances are created...






29. Use of class methods - there are three...






30. If a class declares a _ that is different from its superclass - you must override the superclass' _ to call the new _...






31. In a class method you cannot access...






32. Hold data and know nothing about the user interface






33. Asking a class or object to execute a method






34. Objective C only allows for single inheritance - so in regards to class you only ever see the following pattern






35. Property List...






36. NSString *s = @'Hello - World'; is an example of...






37. UIImageView is used to...






38. Keep view and model objects in sync - control the 'flow' of the application - and save the model objects out to the filesystem






39. A block of statements identified by a name that can accept one or more arguments passed to it by value and can optionally return a value






40. A method in a _ is required unless its preceded by an @optional.






41. Core foundation classes are prefixed with _ and suffixed with _






42. Number one use of protocols in iOS...






43. Execution of the break statement...






44. Values to be supplied as the parameters to the method






45. In the last line of an init method...






46. Proceed through the loop - jump back to the top and check again






47. Whenever a UINavigationController is about to swap views - it sends out two messages






48. id is a...






49. SomeClass* aVariable = [[SomeClass alloc] init]; is an example of what kind of instance?






50. Files Owner...







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