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






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






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






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






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






7. ________ is Foundation's simplest type of collection






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






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






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






11. NSValue can contain any _________ data type






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






13. Cocoa objects that take variadic initializers






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






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






16. ________ is the most general boxing class






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






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






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






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






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






22. You usually DON'T use NSNib ________






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






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






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






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






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






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






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






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






31. C and Objective C differ in representing _______






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






33. Actions of a view are implemented by ___________






34. ________is wrapping a primitive value in an object






35. Instance variables that are pointers to other objects






36. _________ is a class cluster and never directly used






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






38. Methods that respond directly to user interface commands






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






40. Objective C is a PURE SUPERSET of _____






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






42. __________ is mutable






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






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






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






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






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