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//Textkit and TableView with note (ios 7)

//1. start with basic dummy data 

//AppDelegate.h

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow *window;
@property NSMutableArray* notes;

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//Image to NSData and Reverse Transform for saving Core Data

//1. CoreData 모델 생성
//ex) Entities name : Photo / Attributes : date (type Date), image (type Transformable)

//2. create NSManagedObject Subclass (in this case : TWPictureDataTransformer class)

//3. TWPictureDataTransformer.h

@interface TWPictureDataTransformer : NSValueTransformer

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//snapBehavior example code

@implementation DynamicSandwichViewController
{
    NSMutableArray* _views;
    UISnapBehavior* _snap;
    BOOL _viewDocked;
}

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//UIView animateWithDuration 블록 코드

[UIView animateWithDuration:.2 animations:^{
            //code here
        }];

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//웹 뷰 이용 로컬 html 파일 불러오기

    NSString *htmlFile = [[NSBundle mainBundle]
                          pathForResource:@"BullsEye"
                          ofType:@"html"];
    NSData *htmlData = [NSData dataWithContentsOfFile:htmlFile];
    NSURL *baseURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] bundlePath]];
    [self.webView loadData:htmlData MIMEType:@"text/html" textEncodingName:@"UTF-8" baseURL:baseURL];

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//Core Data Lightweight Migration & delete journal mode


//1. add a model version
//select current xcdatamodel -> Editor > Add Model Version -> accept new version name

//2. update data model
//select new xcdatamodel -> create a new entity -> select the new entity, create an attribute you want

//3. update current model version

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//set background image of a UITableView
//ViewController.m

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    //Controlling the Background of a UITableView
    //setting an image as the background of UITableView through four steps
    

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//iOS Simple TableView

//You have to wire up data Source and delegate to the tableView in the xib file

//ViewController.h

@interface ViewController : UIViewController <UITableViewDataSource, UITableViewDelegate>

@property (nonatomic, strong) NSMutableArray *tableData; // holds the table data (title)
@property (nonatomic, strong) NSMutableArray *tableDetailData; // holds the table data (detail text)

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//make a property read-only to other objects but fully accessible to your own class


//.h file

//readonly
@property (nonatomic, readonly, strong) NSMutableArray *searchResults;


//.m file

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//파일/디렉토리 삭제 (code snippet that can use to remove any file or folder)

- (void)removePhotoFile
{
    NSString *path = [self photoPath];
    NSFileManager *fileManager = [NSFileManager defaultManager];
    
    if ([fileManager fileExistsAtPath:path]) {
        
        NSError *error;