15-3 Simple way

[tadej5553]

size=13pt]AddressCard.h[/size]

Code: (Objective-C)

#import <Foundation/Foundation.h> 

@interface AddressCard: NSObject 
{     
    NSString    *name; 
    NSString    *email; 
} 

@property (copy, nonatomic) NSString *name, *email; 

-(AddressCard *) setName: (NSString *) n andEmail: (NSString *) e; 
-(void) print; 
@end 

AddressCard.m

Code: (Objective-C)

#import "AddressCard.h" 

@implementation AddressCard 

@synthesize name, email; 
-(void) print 
{ 
    NSLog (@"===================================="); 
    NSLog (@"|                                  |"); 
    NSLog (@"|  %-31s |", [name UTF8String]); 
    NSLog (@"|  %-31s |", [email UTF8String]); 
    NSLog (@"|                                  |"); 
    NSLog (@"|                                  |"); 
    NSLog (@"|                                  |"); 
    NSLog (@"|       O                  O       |"); 
    NSLog (@"===================================="); 
} 
-(AddressCard *) setName: (NSString *) n andEmail: (NSString *) e
{
    self.name = n;
    self.email = e;
    
    return self;
}

@end 

AddressBook.h

Code: (Objective-C)

#import <Foundation/NSArray.h> 
#import "AddressCard.h"

@interface AddressBook: NSObject 
{ 
    NSString        *bookName; 
    NSMutableArray  *book; 
} 

-(id) initWithName: (NSString *) name; 
-(void) addCard: (AddressCard *) theCard; 
-(int)  entries; 
-(void) list; 
-(void) dealloc; 
-(NSMutableArray *) lookup: (NSString *) theName;

@end 

AddressBook.m

Code: (Objective-C)

#import "AddressBook.h" 

@implementation AddressBook; 

-(id) initWithName: (NSString *) name 
{ 
    self = [self init]; 

    if (self) { 
        bookName = [[ NSString alloc] initWithString: name]; 
        book = [[NSMutableArray alloc] init]; 
    } 
    
    return self; 
} 

-(void) addCard: (AddressCard *) theCard 
{ 
    if(![book containsObject: theCard])
        [book addObject: theCard]; 
} 

-(int) entries 
{ 
    return [book count]; 
} 

-(void) list 
{ 
    NSLog (@"======== Contents of: %@ =========", bookName); 
    for ( AddressCard *theCard in book ) 
        NSLog (@"%-20s    %-32s", [theCard.name UTF8String], 
               [theCard.email UTF8String]); 
    
    NSLog (@"=================================================="); 
} 
-(void) dealloc 

{ 
    [bookName release]; 
    [book release]; 
    [super dealloc]; 
} 

-(NSMutableArray *) lookup: (NSString *) theName 
{ 
    NSMutableArray *result = [NSMutableArray array];
    
    for (AddressCard *nextCard in book) 
        if ([[nextCard name] rangeOfString: theName options: NSCaseInsensitiveSearch].length)
            [result addObject: nextCard]; 
    
    if([result count])
        return result;
        
    return nil; 
} 

@end 

main.m

Code: (Objective-C)

#import <Foundation/Foundation.h>  
#import "AddressBook.h"

int main (int argc, const char * argv[]) {  
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
    
    NSString  *aName = @"Julia Kochan"; 
    NSString  *aEmail = @"jewls337@axlc.com"; 
    NSString  *bName = @"Step Teacher"; 
    NSString  *bEmail = @"tony.iannino@techfitness.com"; 
    NSString  *cName = @"Stephen Kochan"; 
    NSString  *cEmail = @"steve@kochan-wood.com"; 
    
    AddressCard   *card1 = [[AddressCard alloc] init]; 
    AddressCard   *card2 = [[AddressCard alloc] init]; 
    AddressCard   *card3 = [[AddressCard alloc] init]; 
    
    AddressBook  *myBook = [AddressBook alloc]; 
    NSMutableArray *searchResult; 
    
    [card1 setName: aName andEmail: aEmail]; 
    [card2 setName: bName andEmail: bEmail]; 
    [card3 setName: cName andEmail: cEmail]; 
    
    myBook = [myBook initWithName: @"Linda’s Address Book"]; 
    
    [myBook addCard: card1]; 
    [myBook addCard: card2]; 
    [myBook addCard: card3]; 
    
    NSLog (@"Lookup: sTEp"); 
    searchResult = [myBook lookup: @"sTEp"]; 

    if(!searchResult)
        NSLog(@"No match found!");
    
    else
        for(AddressCard *theCard in searchResult)
                [theCard print];
    
    NSLog (@"Lookup: Nik"); 
    searchResult = [myBook lookup: @"Nik"]; 
    
    if(!searchResult)
        NSLog(@"No match found!");
    else
        for(AddressCard *theCard in searchResult)
            [theCard print];
    
    [card1 release]; 
    [card2 release]; 
    [card3 release]; 
    [myBook release]; 
    
    [pool drain];  
    return 0;  
} 

[clp274]

Hey did you by chance do the same question, but with the indexesOfObjectPassingTest: method. I keep trying it and coming up short. I'm not sure if what I'm doing wrong. Here is my implementation code, but it won't work:

-(NSMutableArray *) lookupAllMatches: (NSString *) theName {
        NSIndexSet *result = [book indexesOfObjectsPassingTest:^(id obj, NSUInteger idx, BOOL * stop)
        {
            if ([[obj name] caseInsensitiveCompare:theName] == NSOrderedSame ) {
                return YES; // Found a match, keep going
            } else
                return NO; // Keep looking
       
           
        }];
       
    //Create array to store corresponding objects to the returned Index Set.
    NSMutableArray *matches = [NSMutableArray array];
    //Enumerate through the indexset.
    [result enumerateIndexesUsingBlock:^(NSUInteger idx, BOOL *stop)
     {
         //Find all objects in the book array and store those objects that correspond to the Index Set.
         for (Address_Card *aCard in book) {
            [matches insertObject:aCard atIndex:idx];
         }
         
     }];
   //If there is anything found in the matches array, return it. Otherwise, return nill.
    if ([matches count] > 0) {
        return matches;
    }
    return nil;
   
   
}