Re: Calloc for Cocoa?

• Subject: Re: Calloc for Cocoa?
• From: zauhar <email@hidden>
• Date: Mon, 30 Jun 2003 11:06:18 -0400

On Monday, June 30, 2003, at 12:11 AM, Tomas Zahradnicky wrote:

Hello,

I was used to use calloc(number_of_items, sizeof(item)) to create an
array of items. Is there some similar thing in Cocoa? The approach
like this seems me quite complex:

Although I don't know if this is exactly what you're after, the
following code works fine:

id *idArray ;
int i ;

idArray = (id *)calloc( 100, sizeof(id) ) ;

for( i = 0 ; i < 10 ; ++i )
{
idArray = [ [ NSMutableArray alloc ] initWithCapacity:10 ] ;
}

This array has only ten slots filled, the remaining are nil, which
could be useful in some circumstances. On the other hand, cocoa
provides a way to do that in collections - you just put NSNull at empty
positions.

All the best,

Randy

Randy J. Zauhar, PhD
Assoc. Prof. of Biochemistry
Director, Graduate Program in Bioinformatics
Dept. of Chemistry & Biochemistry
University of the Sciences in Philadelphia
600 S. 43rd Street
Philadelphia, PA 19104

Phone: (215)596-8691
FAX: (215)596-8543
E-mail: email@hidden
Web: http://tonga.usip.edu/zauhar


Discussion after watching Disney's "Lilo & Stitch":

DAD: "But why did the space aliens speak English, as opposed to French,
or Swahili? And why did the one alien speak English with an Eastern
European accent? I don't get it."

CATHERINE (age 7): "That's 'cause you don't have a good cartoon brain."
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