Re: Performance of calculation on float point numbers in a array • NSNumber in NSArray, or classic C array?
Re: Performance of calculation on float point numbers in a array • NSNumber in NSArray, or classic C array?
- Subject: Re: Performance of calculation on float point numbers in a array • NSNumber in NSArray, or classic C array?
- From: Rob Rix <email@hidden>
- Date: Thu, 18 Dec 2008 12:55:45 -0500
Do the simplest thing that could possibly work. In some cases, like if
you need to be calling -performSelector:withObject: with each of these
things, that might be the NSArray. In your case, it sounds to me like
it’s the C array of floats.
Just my two cents.
Rob
On 17-Dec-08, at 3:04 PM, Stanislas Krásnaya wrote:
Hello everyone!
I've got a basic question. I'm sure this is a very vast debate,
since I've found several answers on the subject, but I'm not
satisfied.
I've read that, since we're programming in Objective-C, it's more
elegant and reliable to use an NSArray stuffed with NSNumber instead
of a classic C array. But what I want to do, it's performing classic
calculation, like mean value, variance... etc, on floating point
numbers. Typically around 1000 of them.
I know that our computers are fast now, but this doesn't mean that
we have to not take care of optimization.
So, since NSArray is designed to store all kinds of NSObject's, and
mine will just store some NSNumber's, wouldn't it be a bit stupid to
use it?
Thanks in advance.
Stanislas
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