NYiPhoneDeveloper

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
    NSCharacterSet *nonNumberSet = [[NSCharacterSet characterSetWithCharactersInString:@"0123456789."] invertedSet];
    // allow backspace
    if (range.length > 0 && [string length] == 0)
    {
        return YES;
    }
// Comment out to allow decimal at the beginning
    // do not allow . at the beggining

NYiPhoneDeveloper

// Multidimentional arrays

    int n = 2, m = 4;
    int matrix[n][m];
    
    int i = 0;
    for (unsigned x = 0; x < n; x++)
    {
        for (unsigned y = 0; y < m; y++)
        {

NYiPhoneDeveloper

#import <Foundation/Foundation.h>

int main (int argc, const char *argv[])
{
	NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
	
	NSMutableArray *collectionArray = [[NSMutableArray alloc] init];
	NSArray *numArray = [[NSArray alloc] init];
	NSArray *strArray = [[NSArray alloc] init];
	

NYiPhoneDeveloper

#import <UIKit/UIKit.h>
#define kSelectedTabDefaultsKey @"Selected Tab"

enum {
	kByName,
	kByObject,
};

@interface ToDoListViewController : UIViewController <UITableViewDelegate, UITableViewDataSource, UITabBarDelegate, UIAlertViewDelegate, NSFetchedResultsControllerDelegate>
{

NYiPhoneDeveloper

- (void)viewDidLoad
{
	[segmentControl addTarget: self action: @selector(segmentChanged:) forControlEvents: UIControlEventValueChanged];
	
    [super viewDidLoad];
}

-(IBAction) segmentChanged: (id) sender
{
	NSInteger segmentChoice = [segmentControl selectedSegmentIndex];

NYiPhoneDeveloper

#import "UsingViewsViewController.h"

@implementation UsingViewsViewController
@synthesize pageControl;
@synthesize image_1, image_2;




/*

NYiPhoneDeveloper

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
	MyViewController *viewController = [[MyViewController alloc] initWithNibName: @"MyViewController" bundle: [NSBundle mainBundle]];
	
	self.myViewController = viewController;
	
	[window addSubview: [myViewController view]];
	
    [window makeKeyAndVisible];
	

NYiPhoneDeveloper

NSArray *colorList = [NSArray arrayWithObject: [NSDictionary dictionaryWithObjectsAndKeys:
													@"BrownColor", @"titleValue", [UIColor brownColor], @"colorValue", nil],
						  [NSDictionary dictionaryWithObjectsAndKeys: @"orangeColor", @"titleValue", [UIColor orangeColor], @"colorValue", nil],
						  [NSDictionary dictionaryWithObjectsAndKeys: @"purpleColor", @"titleValue", [UIColor purpleColor], @"colorValue", nil];
						  [NSDictionary dictionaryWithObjectsAndKeys: @"redColor", @"titleValue", [UIColor redColor], @"colorValue", nil], nil];
	[colorList retain];

// Playing with some new code

NYiPhoneDeveloper

#import <UIKit/UIKit.h>
#import <AudioToolbox/AudioToolbox.h>

// The delegates are something that we shall use in order to get more usefulness out of the
// Application -It is given, and free funcitonality. 
@interface AttentionViewController : UIViewController <UIAlertViewDelegate, UIActionSheetDelegate>
{
	IBOutlet UILabel *statusText;
}

NYiPhoneDeveloper

#import "FlowerColorTableViewController.h"

#define sectionCount 2
#define redSection 0
#define blueSection 1


@implementation FlowerColorTableViewController

#pragma mark -