Test your basic knowledge |

Cocoa Programming Basics

Subject : it-skills
Instructions:
  • Answer 47 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. Ensures that every object that has been autoreleased gets sent the release message






2. Two methods that must each concrete subclass of NSString override: -length and _________






3. ____________ is NSString's one public subclass - and also a class cluster






4. ________ is the most general boxing class






5. Cocoa objects that take variadic initializers






6. __________ is mutable






7. Actions of a view are implemented by ___________






8. The basic changeable and unchangeable arrays are: __________ and NSMutableArray






9. Methods that respond directly to user interface commands






10. Three types of collection classes provided by the Foundation: Sets - arrays and ________






11. _______ is a subclass (a class cluster) used to store any kind of single number from a char to a long






12. Objects created through methods that retain alloc or new or copy or _________ must be explicitly released






13. ________ is Foundation's simplest type of collection






14. _______ provides a build system & a code editor and a debugger






15. You usually DON'T use NSNib ________






16. Objective-C is a set of _________-like object-oriented extensions to C






17. Core Objective C define only defines two classes: Object and ______






18. C and Objective C differ in representing _______






19. This opens a function or method or class name as a term in XCode






20. NSValue can contain any _________ data type






21. ________object is like a constant it can't be changed - NsString is constant but NsMutableString isn't






22. The most important part of Objective-C is _______________






23. _________ is a class cluster and never directly used






24. Instance variables that are pointers to other objects






25. Objective C is a PURE SUPERSET of _____






26. Target-action is appropriate for simple view events like button presses but not for __________ with multiple interactions






27. Standard files included through XCode:<Cocoa/Cocoa.h> and the standard C and _____ libraries






28. The two major additions to C by Objective-C are ________ and message sending






29. It is not an error to send a message to _______






30. The _____ is used to represent a pointer to an object






31. Class libraries come from an implementation of _________ such as Cocoa or GNUstep






32. Each segment of a _________ to be followed by an argument is suffixed with a colon






33. The ________ class is the programmatic interface to nib files






34. __________ forwards events from the event queue to the appropriate application window






35. The four NON object types in Objective C: NSRange - ______ - NSSize and NSRect






36. A view implement target action uses _______ and -setAction methods to select the object to call and the method to execute






37. A message send is a higher-level version of a ____________






38. ________is wrapping a primitive value in an object






39. Here a delegate is used & a controller object that responds to a set of messages defined by the view






40. __________ refers to an object's ability to look inside itself and change itself






41. Interface Builder creates ___________ and instances of your own classes that may be joined to UI objects






42. To modify a boxed number you must first unbox it and then perform your primitive ________ and then rebox it






43. __________ is a structure whose first element is a pointer to a class






44. The two ways of a new notifying a controller of a change: via an action; via a _________






45. Prints the result of sending "description" to an object






46. A "class cluster" of NSValue objects which is used to store single numerical values of any type from a char to a long long






47. The three components of a message send:receiver - __________- and [optional] arguments