Re: NSArray usage question.
Re: NSArray usage question.
- Subject: Re: NSArray usage question.
- From: Scott Stevenson <email@hidden>
- Date: Fri, 6 May 2005 13:39:45 -0700
On May 6, 2005, at 12:24 PM, Brian O'Brien wrote:
Is this the correct way to build and use an NSArray?
NSPoint ptArray[plist->getNPolys()];
CPoint p;
for (i=0; i < plist->getNPolys(); ++i)
{
p = plist->getPoint(i);
ptArray[i].x = p.x;
ptArray[i].y = p.y;
}
NSArray *pts = [NSArray arrayWithObjects:ptArray count:i];
NSBezierPath *path = [NSBezierPath bezierPath];
[path appendBezierPathWithPoints:pts count:i];
This won't work because an NSArray can only contain objects, and
NSPoint is a struct.
In general, the more common approach is to create an NSMutableArray,
and use -add: for each object. The approach above (using a raw memory
block) is faster, but comes at the expense of some safety and
convenience.
- Scott
--
http://treehouseideas.com/
http://theocacao.com/ [blog]
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