nishabe

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.log",stringFromDate]];

nishabe

#import "GCDWebServer.h"
#import "GCDWebServerDataResponse.h"
..........
@interface AppDelegate (){
    GCDWebServer* _webServer;
}

- (void)startWebServer{
    
    NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];

nishabe

    NSDate to NSString:
    
    NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"yyyy-MM-dd"];
    NSDate* myDate = [NSDate date];
    NSString *stringFromDate = [dateFormatter stringFromDate:myDate];
    
    NSString to NSDate:
    
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

nishabe

- (instancetype)init {
    self = [super init];
    if (self) {
        // perform initialization
    }
    return self;
}

nishabe

dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
dispatch_async(queue, ^{
            // Perform long running process
 dispatch_async(dispatch_get_main_queue(), ^{
                // Update the UI
            });
        });"

nishabe

dispatch_queue_t serialQueue = dispatch_queue_create(""imagesQueue"", DISPATCH_QUEUE_SERIAL);
dispatch_async(serialQueue, ^{
            // Perform long running process
            dispatch_async(dispatch_get_main_queue(), ^{
                // Update the UI
            });
        });"

nishabe

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
// Your code here
#pragma clang diagnostic pop

nishabe

static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
    // Your code here
    });

nishabe

var appDelegate = UIApplication.sharedApplication().delegate as AppDelegate

nishabe

- (NSURL *)applicationDocumentsDirectory {
    return [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject];
}