On Feb 11, 2011, at 18:08, Andy Akins wrote:
> Imagine a "purchasing" application. First, you have to open a "catalog" - a
> file that lists the items that are available. There might be multiple files,
> representing multiple stores or sets of items, but you have to pick just one.
>
> Then, you
Thank you very much for your comments.
On Feb 12, 2011, at 3:34 AM, Quincey Morris wrote:
> So you still at the stage where you need to think about design not
> implementation -- don't make the mistake of designing for a pre-chosen
> implementation strategy. First, start by designing your user w
Hi all,
I think I may have misunderstood something about how super works. In trying to
build a dictionary that contains key/value pairs from the class itself as well
as super classes up to an arbitrary height, I've hit a wall. Simplified, I have
two classes, SuperClass and SubClass. In SuperCla
hi,
why not try something like :
if ( [self isKindOfClass:[SuperClass class] ] )
{
}
so your test will not depend on instance but on 'typeof'
usually in code you use 'super' to verify that some data in 'super' already
exist or need to be initialised between testing super & self
Le 12 févr
First of all, I agree with claw that this line looks really weird, although it
might work. I've just never seen it done that way.
> if ([self class] == [SuperClass class]) {
Second, are you sure that SubClass inherits from SuperClass? Is it declared
like this? …
@interface SubClass : SuperCl
also,
NSEnumerator *keyE = [[super tagDict] keyEnumerator]; //HERE
it is not a good strategy to use NSEnumerator at this point
what if super does not respond at all ?? . to avoid crash & infinite loop
you needs to specify 'forward messaging' ( another instance object that will
respond to t
super is relative to the class where this code is implemented (SuperClass)
which means the method lookup starts with the super class of SuperClass. This
true even when the code is called from a subclass.
You're getting the "unrecognized selector sent to instance" message because the
super class
"super" does not change what class the object thinks it is an instance of.
(It's different from C++ in this way, if I remember my C++.) If an object is an
instance of class X, [self class] *always* returns X.
Suppose you call [obj tagDict] where obj is an instance of SubClass. This is
what happ
> Did you actually bind the table view's sortDescriptors binding to the
> array controller's sortDescriptors property?
>
No, but that's why I posted, trying to figure out when this can be avoided.
> In the simplest case (all columns bound to different keys on the same
> NSArrayController), NSTa
Hello,
I wrote an application (using NSApplication) that adds a StatusItem to the
StatusBar. Since this is totally sufficient and the application actually has no
window I want to remove the menu of the application, the entry in the dock and
also the application shall not appear when pressing cm
Thanks for the suggestions, all.
I think this will probably suit my needs for now.
Mikkel
On 12/02/2011, at 17.06, Andy Lee wrote:
> "super" does not change what class the object thinks it is an instance of.
> (It's different from C++ in this way, if I remember my C++.) If an object is
> an i
Pretty easy:
- add an entry to your Info.plist: "LSUIElement" => true (this is the
"Application is agent" entry)
It's not necessary to delete the menu from MainMenu.xib, because I believe
that's only used when your app lives in the Dock. Leaving it in allows your
app to still respond to thin
On 2011-02-12, at 12:35 PM, Eckart Schlottmann wrote:
> Hello,
>
> I wrote an application (using NSApplication) that adds a StatusItem to the
> StatusBar. Since this is totally sufficient and the application actually has
> no window I want to remove the menu of the application, the entry in th
If it exists, could somebody point me to notifiers for sleep/wake in iOS?
I have a comm link that goes down with sleep. I would like to bring it up
again on wake (in case the user forgot to disable sleep). I'm already doing
this for applicationWillEnterForeground, but that doesn't work for sleep
On Feb 11, 2011, at 8:04 PM, davel...@mac.com wrote:
> I'm working on a document-based app for the Mac App Store. The data file I'm
> reading/writing is actual a Sqlite database file. I've been able to get it to
> work with the following in my info.plist file (although for this email I've
> us
On Sat, Feb 12, 2011 at 5:52 AM, Mikkel Eide Eriksen
wrote:
> I think I may have misunderstood something about how super works. In trying
> to build a dictionary that contains key/value pairs from the class itself as
> well as super classes up to an arbitrary height, I've hit a wall. Simplified,
On 12/02/2011, at 21.03, Kyle Sluder wrote:
> On Sat, Feb 12, 2011 at 5:52 AM, Mikkel Eide Eriksen
> wrote:
>> I think I may have misunderstood something about how super works. In trying
>> to build a dictionary that contains key/value pairs from the class itself as
>> well as super classes up
On Sat, Feb 12, 2011 at 12:37 PM, Mikkel Eide Eriksen
wrote:
> Thanks for the suggestion, but I should mention that it needs to be an
> instance method since it gets the name of the plist from a userInfo
> dictionary on its entity (SuperClass is a subclass of NSManagedObject). I
> can't get the
Hello all,
I have run into a situation that I don't quite have a solution for. I
have a UIScrollView that holds a bunch of CALayers. My controller is
set up to check and see if it can cache layers that are offscreen
after the user scrolls a certain amount. I found that doing this on
the main th
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