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iOS 5 App Development Objective C

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Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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. Objective C only allows for single inheritance - so in regards to class you only ever see the following pattern
initializers
NSBundle
@interface ClassName:SuperClassName
values

2. Any individual object belonging to any class...
is an instance of that class
view controller
pointer - class
pointers

3. Ready-made instances...
protocol
implementation
Continue
calling code that does the instantiation for you

4. Values to be supplied as the parameters to the method
arguments[message]
references to objects
to get and set variables
object

5. 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
CGRect bounds
Functions
upper
view

6. Class methods typically either create
new instances of the class or retrieve some global property of the class.
CGRect bounds - GCPoint center - CGRect frame
designated initializer
pointers

7. Core foundation classes are prefixed with _ and suffixed with _
%d
Anytime you call a method with new - alloc or copy. You own and must release that object.
implementation
CF - Ref

8. When do you take ownership?...
copy - retain
nil
Anytime you call a method with new - alloc or copy. You own and must release that object.
NSLog routine

9. if you implemented both the setter and getter - the @synthesize method...
Used to find the time right now or to store past or future time/dates
Anytime you call a method with new - alloc or copy. You own and must release that object.
will be ignored
size and position

10. Just a floating point number - but we always use it for graphics.
super - self
CGFloat
position
copy - retain

11. Defining variables - three parts...
accessors - individually we call them 'getters' and 'setters'
CF - Ref
Anytime you call a method with new - alloc or copy. You own and must release that object.
type - name and value

12. Files Owner...
initializer
message
Is a placeholder object
collection of collections - NSArray of an NSArray

13. The root view controller typically creates the next view controller - and the next _ creates the one after that
ready-made instances - instantiation from scratch - and nib based instantiation
array[class - NSMutableArray]
creating an initializer
view controller

14. Typically the designated initializer has parameters for the most important and frequently used _ of an object
instance variables
receiver
pointer to an object
data

15. NSValue - class...
do so in viewDidLoad
instance
Generic object wrapper for other non-object data types
nil

16. If you have extra work you want to do on the view...
protocol
do so in viewDidLoad
(id)initWithFrame:(CGRect)aRect;
@synthesize

17. When do we need to release our outlets?

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18. When making a tableView always...
reuse your cells
@synthesize
creates an instance of NSString that holds the character string
view controller

19. A command directed to an object is called an...
Anytime you call a method with new - alloc or copy. You own and must release that object.
'getters' and 'setters'
message
attributes - behavior

20. A class inherits all _ from its superclass and can add as many as it wants for its own purposes....
only the innermost loop in which the break is executed is terminated
Is a placeholder object
initializers
Core Graphics Framework

21. Classes describe two things...
draw images
unordered collection of objects - objects must be unique
data source - view controller and delegate
attributes - behavior

22. Variable names tend to start with a _ letter; class names tend to start with an _ letter.
lowercase - uppercase
you must import the header file of that class
Functions
to get and set variables

23. In Objective C - the name of a setter method is set plus the name of the instance variable it is changing - for example PossessionName would be...
Object wrapper around primitive types like int - float - double - BOOl
setPossessionName
accessors - individually we call them 'getters' and 'setters'
its dataSource

24. In Objective C arrays can hold only...
the instance variables
methods for generating an instance
references to objects
instance of UIView or one of its subclasses

25. NSNumber - class...
type - name and value
only the class and subclasses can access
Object wrapper around primitive types like int - float - double - BOOl
will be ignored

26. When overriding a method - all you need to is _ - you do not need to declare it in the header file because it has already been declared by the superclass....
NSBundle
define it in the implemenation file
data source - delegate and view controller
only the class and subclasses can access

27. In general - in Objective-C - a reference to an instance is a _ - and the name of the data type of what's at the far end of that pointer is the name of the instances's _.
Instantiation from scratch
pointer - class
only the innermost loop in which the break is executed is terminated
in the dealloc - or when a Controller's view is 'unloaded'

28. Object Oriented based analogue to a function is called a...
view
@synthesize
method
header files declare

29. A message is always contained in square brackets - and has three parts
an object's property
position
values
receiver - selector - arguments

30. UIView - designated initializer...
lowercase - uppercase
Instantiation from scratch
(id)initWithFrame:(CGRect)aRect;
data

31. @property - is using methods...
designated initializer
class
storage
to get and set variables

32. In a class method you cannot access...
class's
accessors - individually we call them 'getters' and 'setters'
the instance variables
first responder

33. The object to which a message is sent - the receiver can be referred to as self from inside the method that is invoked
message
class's
you must import the header file of that class
receiver

34. All objects are accessed using...
pointers
reuse your cells
self
Anytime you call a method with new - alloc or copy. You own and must release that object.

35. UITableViewController is a subclass of...
UIViewController
instance
class
first responder

36. The class is responsible for what instance variables the instance has - but not the _ of those variables.
values
has one root view controller
arguments[message]
designated initializer

37. Archiving works by creating an instance of _ - which is essentially just a container for data - and placing objects and their data inside it.
%d
NSCoder
view
variable scope - if defined within a block

38. NSString *s = @'Hello - World'; is an example of...
declaration and initialization of a variable
the array becomes an owner of that object and has a pointer to it.
UIViewController
a mechanism to enable specific callbacks

39. For view controllers that are closely related - like a table view controller and its detail view controller - you can simply give them _ that point to each other.
you always return the newly initialized object(return self)
@synthesize
instance variables
class methods - initializers

40. Designated initializer makes sure that every...
the array relinquishes ownership of that object and no longer has a pointer to it
instance variable of an object is valid
C Functionn
pointer - class

41. id is a...
'getters' and 'setters'
initializer
is called every time the event occurs
pointer to an object

42. Categories are an Objective C way to add _ to an existing class without subclassing
draw images
methods
CGRect
the message release to all its entries

43. Property List...
Used to find the time right now or to store past or future time/dates
CGRect bounds - GCPoint center - CGRect frame
collection of collections - NSArray of an NSArray
superclass's

44. Execution of the break statement...
causes the program to immediately exit from the loop it is executing - whether its for - while or do
you always return the newly initialized object(return self)
parentViewController
lowercase - uppercase

45. The designated initializer calls the _ designated initializer....

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46. What happens when the last owner calls release?

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47. A UITableViewController can fill all three roles of...
ready-made instances - instantiation from scratch - and nib based instantiation
new instances of the class or retrieve some global property of the class.
class methods - initializers
data source - view controller and delegate

48. Only exists within the statement block there defined - outside of the block is fine
copy - retain
reuse your cells
data source - delegate and view controller
variable scope - if defined within a block

49. Prefixing a character string with an @ symbol [specific - NSString class]...
Instantiation from scratch
position
instance variable of an object is valid
creates an instance of NSString that holds the character string

50. A _ handles touch events.
Object wrapper around primitive types like int - float - double - BOOl
unordered collection of objects - objects must be unique
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iOS 5 App Development Objective C

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