iPhoneU Assignment 1B.m

#import <Foundation/Foundation.h>

int main (int argc, const char * argv[]) {
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

    // insert code here...
    NSLog(@"Hello, World!");
	
	NSString *path = @"~";
	path = [path stringByExpandingTildeInPath];
	
	NSLog(@"My home folder is at '%@'", path);
	
	NSEnumerator *pathComponents = [[path pathComponents] objectEnumerator];
	NSString *obj;
	
	while ( obj = [pathComponents nextObject] ) {
		NSLog(obj);
	}
	
	NSProcessInfo *process = [NSProcessInfo processInfo];
	NSLog(@"Process Name: '%@', Process ID: '%@'", [process processName], [NSString stringWithFormat:@"%d",[process processIdentifier]]);

	NSMutableDictionary *bookmarks = [NSMutableDictionary dictionaryWithCapacity:5];
	[bookmarks setObject:[NSURL URLWithString:@"http://www.stanford.edu"] forKey:@"Stanford University"];
	[bookmarks setObject:[NSURL URLWithString:@"http://www.apple.com"] forKey:@"Apple"];
	[bookmarks setObject:[NSURL URLWithString:@"http://cs193p.stanford.edu"] forKey:@"CS193P"];
	[bookmarks setObject:[NSURL URLWithString:@"http://itunes.stanford.edu"] forKey:@"Stanford on iTunes U"];
	[bookmarks setObject:[NSURL URLWithString:@"http://stanfordshop.com"] forKey:@"Stanford Mall"];

	for(id obj in bookmarks) {
		if([obj hasPrefix:@"Stanford"]==true)
			NSLog(@"Key: '%@' URL: '%@'",obj, [[bookmarks objectForKey:obj] absoluteString]);
	}
	
	NSString * string=@"string";
	
	NSArray *array = [NSArray arrayWithObjects:process, bookmarks, path, string, nil];
	for(id obj in array){
		NSLog(@"========================");
		NSLog(@"Class name: %@",[obj className]);
		NSLog(@"Is Member of NSString: %@",([obj isMemberOfClass:[NSString class]] ? @"YES" : @"NO"));
		NSLog(@"Is Kind of NSString: %@",([obj isKindOfClass:[NSString class]] ? @"YES" : @"NO"));
		NSLog(@"Is Member of NSString: %@",([obj isMemberOfClass:[NSString class]] ? @"YES" : @"NO"));
		NSLog(@"Responds to lowercaseString: %@",([obj respondsToSelector:@selector(lowercaseString)] ? @"YES" : @"NO"));
		if([obj respondsToSelector:@selector(lowercaseString)]==true)
			NSLog(@"lowercaseString is: %@", [obj performSelector:@selector(lowercaseString)]);
	}
	
	
    [pool drain];
    return 0;
}