It’s best to use ARC uniformly in a project and not mix with non-ARC modules. 
Xcode has a tool to upgrade projects to ARC. I have used it a number of times, 
and it seems to do a very good job.

David



> On Jan 30, 2015, at 8:15 PM, Jerry Krinock <je...@ieee.org> wrote:
> 
> 
>> On 2015 Jan 30, at 10:08, Trygve Inda <cocoa...@xericdesign.com> wrote:
>> 
>> Do you see non-ARC code becoming obsolete?
> 
> Non-ARC code is already obsolete, but what I think you mean is will non-ARC 
> code fail to compile or run in some future OS version.  Never say “never” 
> with Apple, but in this case, I don’t think so, because ARC is a layer on top 
> of non-ARC.
> 
>> I could probably start moving it
>> to ARC slowly but it is hard to justify time spent on something that is not
>> really needed. I have not run into any serious bugs or unexplained crashes
>> due to messed up retain/release.
> 
> Then don’t touch it.  Use ARC for new code.
> 
> 
> 
> 
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