Быстрое обращение к данным многомерных словарей

// DKeyClass test version
 
#import <Foundation/Foundation.h>
 
@interface NSDictionary (NSDictionaryDkey)
 
-(id) key: (id) key;
 
@end
 
@interface NSArray(NSArrayDkey)
 
-(id) index: (int) index;
 
@end

// DKeyClass test version
 
#import "DkeyClass.h"
 
@implementation NSDictionary(NSDictionaryDkey)
 
-(id)key:(id)key {
    return  [self objectForKey:key];
}
@end
 
@implementation NSArray(NSArrayDkey)
 
-(id)index:(int)index {
    if (index>=self.count || index<0) {
        NSLog(@"DkeyClass ARRAY ERROR index at %d (max=%d) \n %@",index,self.count-1,self);
        return nil;
    }
    return [self objectAtIndex:index];
}
@end

//
//  ViewController.h
//  test_dict4
//
//  Created by Mac on 6/15/13.
//  Copyright (c) 2013 Mac. All rights reserved.
//
 
#import <UIKit/UIKit.h>
#import "DkeyClass.h"
 
@interface ViewController : UIViewController<UIAlertViewDelegate>
- (IBAction)b1:(id)sender;
- (IBAction)b2:(id)sender;
- (IBAction)b3:(id)sender;
- (IBAction)b4:(id)sender;
- (IBAction)indexerror:(id)sender;
 
- (IBAction)obj1:(id)sender;
- (IBAction)obj2:(id)sender;
- (IBAction)obj3:(id)sender;
- (IBAction)obj4:(id)sender;
- (IBAction)indexobjError:(id)sender;
 
@property NSMutableDictionary* dict1;
 
@end

//
//  ViewController.m
//  test_dict4
//
//  Created by Mac on 6/15/13.
//  Copyright (c) 2013 Mac. All rights reserved.
//
 
#import "ViewController.h"
 
@interface ViewController ()
 
@end
 
@implementation ViewController
 
- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    _dict1 = [NSMutableDictionary new];
    NSMutableArray * a2 = [NSMutableArray new];
    NSMutableDictionary * d3 = [NSMutableDictionary new];
    NSMutableDictionary * d4 = [NSMutableDictionary new];
    
    
    // дерево словарей заполнено
    [_dict1 setObject:a2 forKey:@"k1"];
    [a2 addObject:d3];
    [d3 setObject:d4 forKey:@"k3"];
    
    // заполняем словари строковыми данными
    
    [_dict1 setObject:@"level1" forKey:@"s1"];
    [a2 addObject:@"level2 array"];
    [d3 setObject:@"level3" forKey:@"s3"];
    [d4 setObject:@"level4" forKey:@"s4"];
 
    
    NSLog(@"текущая структура словарей %@",_dict1);
}
 
- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
 
#pragma mark черезКлючи
 
- (IBAction)b1:(id)sender {
    id obj = [_dict1 key:@"s1"];
   
    NSLog(@"KEY МЕТОД строка уровень 1 \n%@", obj);
}
 
- (IBAction)b2:(id)sender {
    id obj = [[_dict1 key:@"k1"] index:1];
    
    NSLog(@"KEY МЕТОД строка уровень 2 \n%@", obj);
}
 
- (IBAction)b3:(id)sender {
    id obj = [[[_dict1 key:@"k1"] index:0] key:@"s3"];
    
    NSLog(@"KEY МЕТОД строка уровень 3 \n%@", obj);
}
 
- (IBAction)b4:(id)sender {
    id obj = [[[[_dict1 key:@"k1"] index:0] key:@"k3"] key:@"s4"];
    
    NSLog(@"KEY МЕТОД строка уровень 4 \n%@", obj);
}
 
- (IBAction)indexerror:(id)sender {
    // запрашиваем ошибочный индекс
    [[_dict1 key:@"k1"] index:2];
    
}
 
#pragma mark стандартный метод
 
- (IBAction)obj1:(id)sender {
    id obj = [_dict1 objectForKey:@"s1"];
    
    NSLog(@"СТАНДАРТНО строка уровень 1 \n%@", obj);
}
 
- (IBAction)obj2:(id)sender {
    id obj = [[_dict1 objectForKey:@"k1"] objectAtIndex:1];
    
    NSLog(@"СТАНДАРТНО строка уровень 2 \n%@", obj);
}
 
- (IBAction)obj3:(id)sender {
    id obj = [[[_dict1 objectForKey:@"k1"] objectAtIndex:0] objectForKey:@"s3"];
    
    NSLog(@"СТАНДАРТНО строка уровень 3 \n%@", obj);
}
 
- (IBAction)obj4:(id)sender {
    id obj = [[[[_dict1 objectForKey:@"k1"] objectAtIndex:0] objectForKey:@"k3"] objectForKey:@"s4"];
    
    NSLog(@"СТАНДАРТНО строка уровень 4 \n%@", obj);
}
 
- (IBAction)indexobjError:(id)sender {
    UIAlertView *a = [[UIAlertView alloc] initWithTitle:nil message:@"приложение сейчас прекратит работу из-за неверного индекса массива" delegate:self cancelButtonTitle:@"ok" otherButtonTitles: nil];
    [a show];
    
}
 
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
   // запрашиваем ошибочный индекс
   [[_dict1 objectForKey:@"k1"] objectAtIndex:2];
}
 
@end

[object methodWithParam1: param1 AndParam2: param2];

#import "ViewController.h"
 
@interface ViewController ()
 
@end
 
const NSString* kValue = @"hello world";
 
@implementation ViewController
 
- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
 
}
 
- (IBAction)B1:(id)sender {
    
    NSMutableDictionary*dt = [NSMutableDictionary new];
    [dt setObject:@"hello" forKey: kValue];
    
    
    [self logString:kValue]; // << желтизна тут 
    
}
 
-(void) logString: (NSString*) str {
    NSLog(@"string %@",str);
}
 
@end

NSString* const kValue = @"hello world"; // constant pointer
int const KInt = 3;  // constant number

NSString* const kValue = @"keyValue";
 
// <<
 
id element = [dictionary objectForKey: kValue];
id element = dictionary[kValue];
id element = [dictionary key: kValue];

#define kValue @"keyValue";
 
// <<
 
id element = [dictionary objectForKey: kValue];
id element = dictionary[kValue];
id element = [dictionary key: kValue];

NSString* const kFieldNameKey = @"FieldValue";