Re: flow of control for sequential data processing
Re: flow of control for sequential data processing
- Subject: Re: flow of control for sequential data processing
- From: Charles Steinman <email@hidden>
- Date: Mon, 18 Feb 2008 18:07:46 -0800 (PST)
--- Daniel Child <email@hidden> wrote:
> First, does such a controller absolutely need an
> interface, or can it
> operate behind the scenes? And if behind the scenes,
> how would you
> load, activate it? Every demo app or tutorial I've
> seen has a nib-
> based app controller. Is it possible to do without
> one?
A controller is just an object that plays a specific
role in the MVC design pattern. If you don't want an
object hooked up to any GUI objects or don't want to
use a nib to instantiate it, that's your call. It's
just an object.
> Secondly, as it turns out the data I am processing
> is very large. I
> read that in Objective-C you typically pass actual
> objects rather
> than pointers to objects. Is that going to be
> feasible if I stick it
> in a dictionary, or will things bog down?
That's precisely backwards, at least as far as Cocoa
is concerned. In Objective-C, all objects live in the
heap and they are only dealt with as pointers. If you
try to create an object on the stack, you'll get an
error in compilation.
Cheers,
Chuck
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