Yuns Blog

#import <Cocoa/Cocoa.h>

@interface PolygonShape : NSObject {

int numberOfSides;

int minimumNumberOfSides;

int maximumNumberOfSides;

float angleInDegrees;

float angleInRadians;

NSString* name;

}

- (void) dealloc;

- (id)init;

- (id)initWithNumberOfSides: (int)sides minimumNumberOfSides:(int)min maximumNumberOfSides:(int)max; 

- (void) description;

@property (readwrite) int numberOfSides;

@property (readwrite) int minimumNumberOfSides;

@property (readwrite) int maximumNumberOfSides;

@property (readonly) float angleInDegrees;

@property (readonly) float angleInRadians;

@property (readonly) NSString* name;

@end

void PrintPathInfo()

{

NSString *path = @"~";

path = [path stringByExpandingTildeInPath];

NSLog(@"My home folder is %@", path);

NSArray *pathCompArray = [path pathComponents];

NSEnumerator *foreachEnum = [pathCompArray objectEnumerator];

NSString* item;

while (item = [foreachEnum nextObject])

{

NSLog(@"%@\n", item);

}

}

void PrintProcessInfo()

{

NSString *processName = [[NSProcessInfo processInfo] processName];

int processId = [[NSProcessInfo processInfo] processIdentifier];

NSString* outputStr = [NSString stringWithFormat: @"Process Name : %@, Process ID : '%d'",

  processName, processId];

NSLog(outputStr);

}

void PrintBookmarkInfo()

{

NSArray *keyArray = [NSArray arrayWithObjects: @"Stanford University", 

@"Apple", 

@"CS193P",

@"Stanford on iTunes U",

@"Stanford Mall", nil];

NSArray *strValueArray = [NSArray arrayWithObjects: @"http://www.stanford.edu",

  @"http://www.apple.com",

  @"http://cs193p.stanford.edu",

  @"http://itunes.stanford.edu",

  @"stanfordshop.com", nil];

NSMutableDictionary *bookMark = [NSMutableDictionary dictionaryWithCapacity: 5];

// c-style iteration

for (int nIdx = 0; nIdx < [keyArray count]; nIdx++)

{

[bookMark setValue: [NSURL URLWithString: [strValueArray objectAtIndex: nIdx]] forKey: [keyArray objectAtIndex: nIdx]]; 

}

NSEnumerator *keyEnum = [bookMark keyEnumerator];

NSString* key;

// Iteration with enumerator

while (key = [keyEnum nextObject])

{

NSURL *url = [bookMark objectForKey: key];

NSLog(@"Key : '%@' URL : '%@'\n", key, [url relativeString]);

}

}

void PrintIntrospectionInfo()

{

NSMutableArray *anyObjArray = [NSMutableArray arrayWithCapacity: 5];

NSString *string = [NSString stringWithFormat: @"Hello, Mac!!!!"];

NSURL *url = [NSURL URLWithString: @"http://www.apple.com"];

NSProcessInfo *processInfo = [NSProcessInfo processInfo];

NSDictionary *dic = [NSDictionary dictionary];

[anyObjArray addObject: string];

[anyObjArray addObject: url];

[anyObjArray addObject: processInfo];

[anyObjArray addObject: dic];

NSEnumerator *objEnum = [anyObjArray objectEnumerator];

NSObject *obj;

while (obj = [objEnum nextObject])

{

NSLog(@"Class Name : %@\n", [obj className]);

NSLog(@"Is member of NSString : %@", [obj isMemberOfClass: [NSString class]] ? @"YES" : @"NO");

NSLog(@"Is kind of NSString : %@", [obj isKindOfClass: [NSString class]] ? @"YES" : @"NO");

SEL sel = @selector(lowercaseString);

if ([obj respondsToSelector: sel] == YES)

{

NSLog(@"lowercaseString is '%@'", [obj performSelector: sel]);

}

else

{

NSLog(@"Responds to lowercaseString : NO");

}

NSLog(@"====================================");

}

[anyObjArray removeAllObjects];

[anyObjArray release];

}