collections of primitive types

[Travis Griggs]

It looks like I'll have to do my own high res time object, hopefully 
these tutorials will elucidate how I build up a reusable library of such 
objects, and what the common conventions are for doing so. So, I'm on to 
my next question...

NSArray looks fine for storing objects. But quite often I want an array 
of floats or ints. What's the general approach? Do I box up the 
primitive numbers in objects and use NSArray? Is there a FloatArray or 
IntArray thing? Write my own?

And why can't NSArray hold nil's? I thought nil was an object in 
Objective-C and that you could send messages to it.

--
Travis Griggs
Key Technology
One Man's Pink Plane is Another Man's Blue Plane