Mailing Lists: Apple Mailing Lists

Image of Mac OS face in stamp
 
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Garbage collector vs variable lifetime



On Sat, Jun 7, 2008 at 12:42 AM, Bill Bumgarner <email@hidden> wrote:

> The easiest way to do this is to simply to use data once after the for()
> loop:
>
>        NSData* data = <get it from somewhere>;
>        const unsigned char* bytes = [data bytes];
>        NSUInteger count = [data length];
>        for (NSUInteger i = 0; i < count; i++)
>                something = bytes [i];
>        [data self];

What about using the __strong modifier? The compiler surely won't
consider "bytes" to be collectable until after the loop.

        NSData* data = <get it from somewhere>;
        __strong const unsigned char* bytes = [data bytes];
        NSUInteger count = [data length];
        for (NSUInteger i = 0; i < count; i++)
                something = bytes [i];

Hamish
_______________________________________________

Cocoa-dev mailing list (email@hidden)

Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com

Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/cocoa-dev/email@hidden

This email sent to email@hidden

References: 
 >Garbage collector vs variable lifetime (From: Quincey Morris <email@hidden>)
 >Re: Garbage collector vs variable lifetime (From: Bill Bumgarner <email@hidden>)
 >Re: Garbage collector vs variable lifetime (From: Ricky Sharp <email@hidden>)
 >Re: Garbage collector vs variable lifetime (From: Bill Bumgarner <email@hidden>)



Visit the Apple Store online or at retail locations.
1-800-MY-APPLE

Contact Apple | Terms of Use | Privacy Policy

Copyright © 2007 Apple Inc. All rights reserved.