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    NSURL *url = [NSURL URLWithString:@"https://google.co.uk"];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    
    NSError *error;
    [NSURLConnection sendSynchronousRequest:request
                          returningResponse:nil
                                      error:&error];
    NSLog(@"NSURLConnection error: %@", error.localizedDescription);
    
    [[[NSURLSession sharedSession]

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// For NSString to NSDate to parse server dates in the full ISO 8601 format
// E.g. 2014-02-11T10:22:46+00:00
+ (NSDateFormatter *) iso8601FullDateFromatter
{
    static NSDateFormatter * dateFormatter;
    
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        
        dateFormatter = [[NSDateFormatter alloc] init];

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+ (NSString *)htmlFromBodyString:(NSString *)htmlBodyString
                        textFont:(UIFont *)font
                       textColor:(UIColor *)textColor
{
    int numComponents = CGColorGetNumberOfComponents([textColor CGColor]);
    
    NSAssert(numComponents == 4 || numComponents == 2, @"Unsupported color format");
    
    // E.g. FF00A5
    NSString *colorHexString = nil;

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static BOOL isRunningTests(void) __attribute__((const));
 
- (BOOL)application:(UIApplication *)application   
        didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    if (isRunningTests()) {
        return YES;
    }
    
    //

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CFAbsoluteTime startTimeStamp = CFAbsoluteTimeGetCurrent();

<#code to time#>

static NSTimeInterval smoothedTimeTaken = 0.0;
NSTimeInterval timeTaken = (CFAbsoluteTimeGetCurrent() - startTimeStamp);
if (smoothedTimeTaken == 0) smoothedTimeTaken = timeTaken;
else smoothedTimeTaken = smoothedTimeTaken * 0.9 + timeTaken * 0.1;

NSLog(@"Took %0.1f ms (smoothed) to <#name of task#>", smoothedTimeTaken * 1000);

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- (void)testAsyncExample
{
    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
    __block BOOL hasRunBlock = NO;
    
    [MyClass asyncCallback:^{
        
        hasRunBlock = YES;
        dispatch_semaphore_signal(semaphore);
    }];

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+ (void) logCharacterSet:(NSCharacterSet*)characterSet
{
    unichar unicharBuffer[20];
    int index = 0;
    
    for (unichar uc = 0; uc < (0xFFFF); uc ++)
    {
        if ([characterSet characterIsMember:uc])
        {
            unicharBuffer[index] = uc;

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// View controller is a subclass of GLKViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    self.eaglContext = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
    
    self.ciContext = [CIContext
                      contextWithEAGLContext:self.eaglContext

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[MyClass writeStringWithFileName:@"Complete"
                          option:NSDataWritingFileProtectionComplete];

[MyClass writeStringWithFileName:@"CompleteUnlessOpen"
                          option:NSDataWritingFileProtectionCompleteUnlessOpen];

[MyClass writeStringWithFileName:@"CompleteUntilFirstUserAuthentication"
                          option:NSDataWritingFileProtectionCompleteUntilFirstUserAuthentication];

[MyClass writeStringWithFileName:@"None"

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//
//  UIImage+Transform.h
//  TestImage
//
//  Created by Robert Saunders on 04/10/2012.
//  Copyright (c) 2012 Robert Saunders. All rights reserved.
//

#import <UIKit/UIKit.h>