General Flashcards
0
Q
Key- value coding is a set of methods defined in NSObject that enable you to…
A
set and get the values of properties by name.
methods:
- (id) valueForKey: (NSString *)key;
- (void) setValue: (id)value forKey: (NSString *)key;
1
Q
Say your application includes a small image of 25x25 pixels. If this image is displayed on a Retina display, then…
A
the image must be stretched to cover an area of 50x50 pixels.
