iOS Directories paths helper

Directory.h

#import <Foundation/Foundation.h>

@interface Directory : NSObject

+(NSString*)documents;
+(NSString*)temp;
+(NSString*)library;
+(NSString*)bundle;
+(NSString*)cache;
+(NSString*)preferences;

@end

Directory.m

#import "Directory.h"

@implementation Directory

+(NSString*)documents
{
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *path = [paths objectAtIndex:0];
    return path;
}

+(NSString*)temp
{
    return NSTemporaryDirectory();
}

+(NSString*)library
{
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
    NSString *path = [paths objectAtIndex:0];    
    return path;
}

+(NSString*)bundle
{
    return [[NSBundle mainBundle] bundlePath];
}

+(NSString*)cache
{
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
    NSString *path = [paths objectAtIndex:0];    
    return path;
}

+(NSString*)preferences
{
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSPreferencePanesDirectory, NSUserDomainMask, YES);
    NSString *path = [paths objectAtIndex:0];    
    return path;
}

@end