naotokui

// バックグラウンド処理のスタートを宣言
UIBackgroundTaskIdentifier  bgTask = UIBackgroundTaskInvalid;
bgTask = [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:^{
                              [[UIApplication sharedApplication] endBackgroundTask:bgTask];
                          }];

/* ここでやりたい処理をする */

// バックグラウンド処理の終了
if (bgTask != UIBackgroundTaskInvalid){

naotokui

 
if ([UIApplication sharedApplication].applicationState == UIApplicationStateBackground) ...
//    UIApplicationStateActive,
//    UIApplicationStateInactive,

naotokui

/*
 *  System Versioning Preprocessor Macros
 */ 

#define SYSTEM_VERSION_EQUAL_TO(v)                  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)
#define SYSTEM_VERSION_GREATER_THAN(v)              ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)
#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v)  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN(v)                 ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v)     ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)

naotokui

- (void)reloadRow: (NSInteger) row inSection:(NSInteger) section 
{
    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:row inSection:section];
    NSArray *indexPaths = [[NSArray alloc] initWithObject:indexPath];
    [self.tableView reloadRowsAtIndexPaths:indexPaths withRowAnimation:UITableViewRowAnimationNone]; //UITableViewRowAnimationFace or whatever
    [indexPaths release];
}

naotokui

NSString *appDomain = [[NSBundle mainBundle] bundleIdentifier];
[[NSUserDefaults standardUserDefaults] removePersistentDomainForName:appDomain];

naotokui

NSData *data = UIImageJPEGRepresentation([UIImage imageNamed:@"Flower.jpg"] , 0.5);
UIPasteboard*  pasteboard  = [UIPasteboard pasteboardWithName: LINE_PASTEBOARD create: YES];
[pasteboard setData: data forPasteboardType: (NSString *)kUTTypeJPEG];

// LINE
NSString *escapedStr = [LINE_PASTEBOARD stringByAddingPercentEscapesUsingEncoding: NSUTF8StringEncoding];
NSString *urlStr     = [NSString stringWithFormat:@"line://msg/image/%@", escapedStr];
NSURL    *sndUrl     = [NSURL URLWithString:urlStr];

if ([[UIApplication sharedApplication] canOpenURL:sndUrl]) {

naotokui

// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

naotokui

+ (ClassName *)sharedInstance {
    static dispatch_once_t once;
    static ClassName *sharedInstance;
    dispatch_once(&once, ^ { sharedInstance = [[ClassName alloc] init]]; });
    return sharedInstance;
}

naotokui

#if defined(__LP64__) && __LP64__
# define CGFLOAT_TYPE double
# define CGFLOAT_IS_DOUBLE 1
# define CGFLOAT_MIN DBL_MIN
# define CGFLOAT_MAX DBL_MAX
#else
# define CGFLOAT_TYPE float
# define CGFLOAT_IS_DOUBLE 0
# define CGFLOAT_MIN FLT_MIN
# define CGFLOAT_MAX FLT_MAX

naotokui

if ((num & (num - 1)) == 0){
	// num is 2^N
}