p060functionPointer

#import "FunctionPointerAppDelegate.h"

@implementation FunctionPointerAppDelegate

@synthesize window=_window;

NSInteger sortByLastCharacter(id string1, id string2, void* context) { 

    NSString* s1 = (NSString*) string1; 

    NSString* s2 = (NSString*) string2; 

    NSString* string1end = [s1 substringFromIndex:[s1 length] - 1]; 

    NSString* string2end = [s2 substringFromIndex:[s2 length] - 1]; 

    return [string1end compare:string2end];

}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

{

    

    NSArray* arr = [NSArray arrayWithObjects:

                    @"Manny",

                    @"Moe",

                    @"Jack",

                    nil];

    NSArray* arr2 = [arr sortedArrayUsingFunction:&sortByLastCharacter context:NULL];

    NSLog(@"%@", arr2);

    

    

    

    

    

    // Override point for customization after application launch.

    [self.window makeKeyAndVisible];

    return YES;

}

- (void)dealloc

{

    [_window release];

    [super dealloc];

}

@end

[Session started at 2011-09-07 23:00:27 +0800.]

2011-09-07 23:00:30.115 p060functionPointer[718:207] (

    Moe,

    Jack,

    Manny

)