stringWithUnichar:

This category is going to be used in other code samples.

-------------- Interface -------------

(HKStringWithUnichar.h)

#import <Foundation/Foundation.h>

@interface NSString (HKNSStringWithUnichar)

+ (NSString *) stringWithUnichar: (unichar) value;

+ (NSString *) attachmentString;

@end

-------------- Implementation -------------

#import "HKNSStringWithUnichar.h"

@implementation NSString (HKNSStringWithUnichar)

+ (NSString *) stringWithUnichar:(unichar) value

{

     NSString * result = nil;

     result = [NSString stringWithFormat: @"%C", value];

     return result;

}

+ (NSString *) attachmentString

{

     return [self stringWithUnichar:NSAttachmentCharacter];         

}

@end