Re: Initializing a NSMutableString an odd way
Re: Initializing a NSMutableString an odd way
- Subject: Re: Initializing a NSMutableString an odd way
- From: Greg Parker <email@hidden>
- Date: Wed, 31 Jul 2013 13:38:00 -0700
On Jul 31, 2013, at 1:32 PM, Vincent Habchi <email@hidden> wrote:
> Greg Parker wrote:
>> ARC and non-ARC scores are the same within measurement noise, except for [NSMutableString string] where ARC can optimize the autoreleased return value so the test doesn't need to spin the autorelease pool. Note th
>
> The end of your message somehow got lost in the cyberspace.
The spurious text was an editing error. No content was harmed.
> I thus suppose that to “clean” a NSMutableString, it is faster to recreate another one rather than use -deleteCharactersInRange: with a range covering the whole string.
Not necessarily. If you have long string and you want to clear it and re-fill it with another long string, then it may be faster to use -deleteCharactersInRange: in order to avoid memory re-allocation overhead. But that possibility depends on precise implementation details of NSMutableString.
--
Greg Parker email@hidden Runtime Wrangler
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