ually worry
me all that much.
Paul Sanders.
- Original Message -
From: "Bill Bumgarner"
To: "Gideon King"
Cc: "Cocoa Dev"
Sent: Friday, March 12, 2010 6:36 AM
Subject: Re: Switching methods in private classes in Apple
frameworks
Where "careful about
Try using:
performSelector:withObject:afterDelay:inModes:
passing:
[NSArray arrayWithObjects: NSDefaultRunLoopMode, NSModalPanelRunLoopMode,
nil]
to inModes:
Paul Sanders
- Original Message -
From: "Alexander Bokovikov"
To:
Sent: Friday, March 12, 2010 4:34
reentrancy problems and the
same code worked fine on Leopard and Tiger. I guess Apple think it's dangerous
to let us play with the sharp toys...
Paul Sanders
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> As people often seem to do with such things, I was
> misinterpreting what it [Instruments] was telling me.
A really really simple way of getting a handle on where a
program is spending its time is to take a few samples in
Activity Monitor while it is busy. You'd be amazed at how well
this w
about the difference between copy and mutableCopy Ken
so it wasn't that, but it was a nice idea to suggest it.
Paul Sanders.
- Original Message -
From: "Greg Parker"
To: "Paul Sanders"
Cc: "Cocoa-Dev List"
Sent: Saturday, March 13, 2010 12:01 AM
Subjec
Try:
#define PRIVATE_ID id
...
PRIVATE_ID myPrivateiVar;
Paul Sanders.
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, all will be well.
Paul Sanders.
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manage yourself might be released
for the last time, but if you put a breakpoint on [NSTimer
dealloc] you will be able to see it when it happens.
Paul Sanders.
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>From errno.h:
#define ENOTEMPTY 66 /* Directory not empty */
If that helps at all...
Paul Sanders.
- Original Message -
From: "Gideon King"
To: "Cocoa Dev"
Sent: Sunday, March 21, 2010 5:48 PM
Subject: Re: Save As core data question
...
AppKit
...ple.CoreServices.CarbonCore 0x918d87ae PrivateMPEntryPoint + 68
8 libSystem.B.dylib 0x922f4fbd _pthread_start + 345
9 libSystem.B.dylib 0x922f4e42 thread_start + 34
I have submitted a bug report (#7753826).
Paul Sanders.
- Original Message -
From: "Kevin Wo
> I need to open a bitmap file, perhaps do some filtering, and
> render it
> to the screen with the maximum possible performance.
Try it the easy way, see if it's fast enough. NSImage can load
most common bitmap file formats and draw itself.
Have a look at -[NSBezierPath setFlatness:]. A larger value
might be faster (but might also look ugly). There's also a bit
of code floating around in the web-o-sphere that might be faster
than what you are using:
http://lists.apple.com/archives/Cocoa-dev/2006/Mar/msg01940.html
Paul Sa
s to respecting other people's memory, but you can never
be 100% sure.
Paul Sanders.
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Maybe poll the file size when you get your event and wait for it
to stop changing.
Paul Sanders.
- Original Message -
From: "Lee Gillen"
To: "Jens Alfke"
Cc: "Apple Developer Mailing List"
Sent: Thursday, April 08, 2010 7:08 PM
Subject: Re: How does F
call). The exact effect you get depends on whether
they erase the background first and suchlike.
Paul Sanders.
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you do this and keeps in sync.
Looking in these folders will also allow you to give the user some idea of what
he is about to permanently delete.
Paul Sanders.
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> Also, IB had (has?) a bug where it would unarchive views in the
> reverse order from which they were stored in the nib. IB does allow
> you to reorder subviews, so if you are still being bitten by this you
> could build your interface and then reorder the views such that they
> are backwards. The
> Please don't hardcode those paths. Use system APIs like
> FindFolder
> instead to locate the trash directory for a given volume.
Well, OK, but you get the idea.
Paul Sanders.
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7;t obvious, my earlier "rm -rf" post was intended
to show how to empty the trash for a particular volume only. I
believe that might be what the OP was looking for.
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it for all subclasses that adopt that protocol (can
someone please confirm this):
@protocol MyLightweightReusableObjectProtocol
- (void) zeroIVars;
@end
@interface MyClass : NSObject
...
Paul Sanders.
- Original Message -
From: "Ben Haller"
To: "Cocoa List"
S
ions.html
According to which, alloc + init + release costs about the same as 35-40 method
calls.
The code I posted could cache [MyClass class] if (as I do) you like to leave
the asserts in your release code. And it works, of course, because the isA
pointer in all instances of a particu
are probably easier to pull off in
C++, but no doubt you have an existing obj-C code base.
Paul Sanders.
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d like this. Pity us poor C++ folks. One of the
worst design decisions in C++, IMO, is that objects are not zeroed on
allocation by default. It leads to constructors like this:
ivar1 = 0;
ivar2 = 0;
ivar3 = 0;
ivar_p1 = NULL;
ivar_p2 = NULL;
...
Which is tedious an
es it would. We're lucky it's Saturday or he would probably have already
poured cold water on the whole idea :).
Paul Sanders.
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a-2010-01-22-toll-free-bridging-internals.html
I see that my assumption that Toll-Free bridged CF and Obj-C types have the
same internal layout was false. Instead, it's all smoke and mirrors.
Paul Sanders.
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> No, you misunderstand. There is (in the scheme I'm vaguely recalling)
> _nothing_ inside the instances
> which holds or points to something which holds the retain count.
>
> There is another data structure entirely which maps from object addresses to
> a retain count.
Yes I see, that's also w
7; one is copying from when zeroing out the
object for reuse.
Even then, all is not lost. Override retain and release to do nothing.
Presumably, Ben, you have your own scheme for managing the lifecycle of these
objects which is not based on retain counts
ng you iVars at offset
class_getInstanceSize([NSObject class]). That way you don't care how many
'hidden' iVars NSObject has or what size they are. I think, in fact, that was
Ken's intention.
Paul Sanders.
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ethod names, this might be worth a look
if you haven't already:
http://developer.apple.com/Mac/library/documentation/Cocoa/Conceptual/ObjectiveC/Articles/ocSelectors.html#//apple_ref/doc/uid/TP30001163-CH23-SW1
Paul Sanders.
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to target
> more complex functionality.
> Are there any code snippets around for sampling a sound file?
Apart from this being the wrong list as already mentioned, you are looking for
ExtAudioFile. This can read a variety of sound file formats and is v
did, and, for what I am
doing, I do not miss them. Tell you what though; taking in so much new
material is very tiring, mentally. Get plenty of sleep and forget everything
you know about Carbon.
Paul Sanders.
- Original Message -
From: "Bill Appleton"
To: "Michael
NSMenuDidBeginTrackingNotification might do what you want. Note that, despite
what the docs say, this is not sent on Tiger.
Paul Sanders
- Original Message -
From: "David Reitter"
To:
Sent: Friday, April 23, 2010 4:31 PM
Subject: Reason for menuNeedsUpdate notification?
H
> (i'm the guy who wrote supercard if that explains anything to the old-timers)
It does. Respect.
Paul Sanders.
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Con
upgraded'.
This makes the whole procedure very simple.
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rminally weird. It works though, although as I say it took a while to put it
all together, and I now have common code across the two platforms with a
reasonably native look-and-feel, which is what I wanted. Tough luck about
Linux, but then that's not important to me.
Looks like
s situation. It's a bit like the old
Irish joke that goes 'What's the best way to get to Dublin?' --
'Well I wouldn't start from here'. No offence intended to any
Irish readers BTW, it's a terrific place.
Paul Sanders.
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ugh there - plus the NS or
CG Graphics context you can get by locking focus on the Window's content view
for drawing in.
I knew I'd get there in the end!
Paul Sanders.
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Please do not p
#x27;s ultimate disposal. setmenuitemtext contains a similar error. To
catch problems like this early, enable 'zombies' (but not when checking for
leaks!!):
http://www.cocoadev.com/index.pl?NSZombieEnabled
Paul Sanders.
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... It's a method that works. Apple's Cocoa framework docs are
actually very good. They should all have been installed with Xcode.
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ings it can do are defined there.
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t at the end of your drawRect: method, but
calling it too often hurts performance and, depending on exactly
what is being drawn when, can cause 'screen flash'.
Paul Sanders.
- Original Message -
From: "Bill Appleton"
To: "cocoa-dev list"
Sent: Monday, April
he primary display, as reported by NSScreen,
did not change. But it was a while ago so I could be wrong and
the docs agree with you. This implies that the primary display
can change at run time.
Paul Sanders.
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erpret it however you
like.
Paul Sanders.
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lt is probably for
historical reasons. I'd like to see that changed.
Unfortunately, setting it project-wide generates a warning
(something like 'this flag pertains only to Objective-C') for .c
and .cpp files, which is a bit of a pain, but one can p
Actually, I think I was just plain wrong but what I meant was
[[NSScreen screens] objectAtIndex: 0].
Paul Sanders.
- Original Message -
From: "Uli Kusterer"
To: "Paul Sanders"
Cc: "Cocoa-Dev (Apple)"
Sent: Tuesday, April 27, 2010 10:34 PM
Subject: Re: N
implicity of doing things this way and Apple engineers have been
nudging you in that direction.
Paul Sanders.
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drawRect: you
need to call flushWindow yourself after calling unlockFocus to get reliable
screen updates.
Paul Sanders.
- Original Message -
From: Bill Appleton
To: vincent habchi
Cc: Paul Sanders ; cocoa-dev list
Sent: Wednesday, April 28, 2010 7:29 PM
Subject: Re: white screen windows
w (or any of its ancestor views) is hidden
so you can just give up in that case. I agree also that drawing
within drawRect: is much the best way, but it occurs to me that
you might have a ton of existing code that doesn't see life in
those terms. I'd head in that direction tho
the key codes generated by an Apple keyboard. There's a
nifty little app out there called Ukelele which will display them.
Paul Sanders.
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> Already tried NSBorderlessWindowMask, but that doesn't supports the close
> button functionality, which is required in my case.
You can create a close button via +[NSWindow standardWindowButton:forStyleMask:]
I think NSBorderlessWindowMask is the only game in town here.
P
an
iVar in shouldChangeTextInRange:affectedCharRange:replacementString: It ain't
pretty, and there's probably some detail to work out, but it works for me.
Paul Sanders.
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received. Then you will know when to take action.
Paul Sanders.
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> I tried a page on, but it didn't do the color highlighting
You could try pastebin. It seems to be popular with the folks
round here.
Pau Sanders.
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Use lsof from the command line.
Paul Sanders.
- Original Message -
From: "The Geezer"
To:
Sent: Saturday, May 15, 2010 3:24 PM
Subject: Posix error 24
I wrote a cocoa application that periodically gets a posix error
24.
I know this means my app's number of open fil
hat is constantly getting redrawn for
> no apparent reason.
Just a longshot: did you override one of the 'display...' methods and fail to
call super? If so, that might cause trouble.
Paul Sanders.
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27;t like that. I can't believe there's no
> 'setBlockingMode' or something like that for CAAnimation.
>
> Thanks in advance!
The approach I use is to subclass NSApplication and throw awat mouse, keyboard
and gesture events in -[MySubclassedNSApplication sendE
sponding events, but I have
> a hard time to simulate key strokes.
...
I would take a look at the source code for VNC:
http://sourceforge.net/projects/osxvnc/
Indeed, if you write a client that can talk to a VNC server you don't need to
write your own serve
des is likely to be painful.
Paul Sanders.
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reeping
steadily up when the app was playing audio but otherwise idle.
Paul Sanders.
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> Also be aware that not all file systems support the notion of
> creation dates of their objects. I don't know off-hand if
> NTFS does.
It does.
Paul Sanders.
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Please do
seem
to be very reliable. I have several files where it post-dates the last
modification date.
Paul Sanders.
- Original Message -
From: Angelo Chen
To: Ken Thomases ; Paul Sanders
Cc: cocoa-dev@lists.apple.com
Sent: Sunday, May 23, 2010 3:05 AM
Subject: Re: getting file creation date
builds to
get st_birthtimespec. stat64 is deprecated in Snow Leopard, but seems unlikely
to go away. I guess a belt-and-braces type of person would test the system
version and weak link.
Paul Sanders.
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sible to tell. But, luckily, it is summer :)
Paul Sanders.
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sensible platforms, stat() returns UTC, as you'd expect.
That statement I can now verify by experiment (which is good as I assumed that
when I wrote the code). The docs do not say.
Paul Sanders.
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his in the runtime library
source code. It's easy once you know where to look. You can even step through
it in the debugger.
It's true that Windows runs the CMOS clock in local time, but that is a detail.
It has nothing to do with
understand on the
Mac. I am not a Windows fan boy. I just have a foot in both
camps.
Paul Sanders.
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What I meant was, let's not prolong the discussion, period. The
snippet quoted below is incomplete.
Nevermind.
Paul Sanders.
- Original Message -
From: "Scott Anguish"
To: "Paul Sanders"
Cc: "Alastair Houghton" ;
Sent: Monday, May 24, 2010 5:49
what you are looking for. Setting them is
an all-or-nothing affair so, typically, you get them, change what you want to
change in a mutable copy of the NSDictionary returned and and then set them.
Regards,
Paul Sanders.
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coa/conceptual/TextEditing/Tasks/BatchEditing.html
Again, for what you are doing here this is not really relevant; the code you
posted should work just fine. But if you are making a number of changes at the
same time it is worth calling these methods.
Regards,
Paul Sanders.
_
size of
the text (in terms of the amount of space it will take up on the display) and
so (I surmise) scrollPoint: doesn't work as expected.
In other words, the code you have now is correct.
Regards,
Paul Sanders.
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On 7 Jun 2010, at 15:39, Gabriel Zachmann wrote:
>
> All kinds of suggestions, insights, and tips will be highly appreciated.
>
A quick and easy way to find out where an app is hung is to sample it in
Activity Monitor.
Regards,
Pau
documentation/cocoa/Conceptual/NSScrollViewGuide/Articles/Basics.html#//apple_ref/doc/uid/TP40003461-SW1
Regards,
Paul Sanders
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Co
> Unfortunately this causes the background to turn black and not transparent. I
> would need the view to become transparent
> (so the WebView underneath is visible).
Try this:
[[NSColor clearColor] setFill];
NSRectFill (myRect);
That's what I do.
Regards,
e as YES
- filling the content view with clearColor
Then draw your rectangles in the content view of this window and the NSRectFill
trick should work.
Regards,
Paul Sanders.
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Please do no
need only draw those rectanges which are
visible, of course.
Kyle, I rather liked your stack of 'bees'.
Regards,
Paul Sanders.
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both the web and overlay
> view at the same time (and is also
> efficient).
Also, you can probably make your overlay window a child window of the window
containing the webview. Then:
- it will stay on top of it
- it will move with it
Regards,
Paul Sanders.
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es after calling super. It sounds almost too easy.
Regards,
Paul Sanders.
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wrap to the start of
> value column and not
> wrap all the way to the beginning og the new line. Is this possible using
> attributes and an
> NSAttaributedString. Heres an example:
I believe you are looking for - [NSMutableParagraphSty
ive
until the current autorelease pool 'pops'. You can look at name (and probably
temp, but I'm not sure) in the debugger, of course.
Regards,
Paul Sanders.
- Original Message -
From: Steve Steinitz
To: cocoa-dev@lists.apple.com
Sent: Sunday, June 20, 2010 11:10 AM
might be wrong with the setup of
your project but at least now you have an idea of what to look for.
Regards,
--
Paul Sanders
AlpineSoft
http://www.alpinesoft.co.uk
- Original Message -
From: Steve Steinitz
To: Paul Sa
adding the #include sort things out?
Regards,
Paul Sanders.
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Help
> The correct import is #import
> .
So it is, sorry. It was half-way down my source file.
Regards,
Paul Sanders.
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C
ecommended by Jean-Daniel) I don't know.
As usual in Mac-land, there are 6 ways of doing everything.
Regards,
Paul Sanders.
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DF's.
Just my $0.02.
Regards,
Paul Sanders.
- Original Message -
From: Richard Somers
To: cocoa-dev@lists.apple.com
Sent: Saturday, June 26, 2010 8:19 PM
Subject: Toolbar Icon Workflow
My current ad hoc work flow for toolbar icons which are geometric in
nature.
• Use "Ink
(space was at a premium!).
And in fact it's not as good as it could be because it goes via an
intermediate bitmap for cross-platform reasons. Using the PDF direct might
look a bit better still.
Regards,
Paul Sanders.
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s a starting point (following on from Jens' suggestion):
http://sourceforge.net/projects/adns/. Nice, simple source code which you can
hack around, liberal license. No doubt there are other options out there.
Regards,
Paul Sanders.
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zling [NSEvent dealloc]
(erk!) does anyone have an idea about how I might be able to catch an NSEvent
object at the point of deallocation?
Many thanks,
Paul Sanders.
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and possibly mistakenly), I'm still supporting 10.4. I think I need to
review this policy! Good idea though.
Regards,
Paul Sanders.
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from the field (just one) where my referenced object pointer was
obviously stale so there must be a little loophole in there somewhere. Thanks
for the input guys, much appreciated.
Regards,
Paul Sanders.
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reconfigured. I find this useful.
Paul Sanders.
- Original Message -
From: "Jacob Schwartz"
To:
Sent: Tuesday, December 29, 2009 6:15 PM
Subject: Notification when displays are detected?
Hey all,
After some searching through the API, which apparently I am not
good at,
: (NSNotification *) notification
{
...
}
What object is 'self' in your scenario? It needs to exist for the life of the
app, obviously.
Paul Sanders.
- Original Message -
From: Jacob Schwartz
To: Paul Sanders
Cc: cocoa-dev@lists.apple.com
Sent: Tuesday, December 29, 2009 6:47 PM
S
er cleanup you need to do. Just releae it at the
end of the method.
Paul Sanders.
- Original Message -
From: "Jerry Krinock"
To: "Cocoa Developers"
Sent: Thursday, December 31, 2009 5:36 PM
Subject: NSDocument, NSManagedObjectContext do Stuff
in -dealloc, Cause
Check out NSTextView's setTypingAttributes: method. And look up
the meaning of NSParagraphStyleAttributeName. It's really not
so hard...
Paul Sanders.
- Original Message -
From: "Joshua Garnham"
To: "Graham Cox"
Cc:
Sent: Friday, January 01, 2010 12:
ngest of spring
chickens). There is a lot to know. I think it's Hillegass who
recommends getting plenty of sleep. His book "Cocoa Programming
for Mac OS X" might be worth buying (that will be $5 please
Aaron :).
Paul Sanders
- Original Message -
From: "Graham Co
Yep, that looks ok. I think pS is probably being returned as nil. You can
check this in Xcode. In which case, you can add:
if (pS == nil)
pS = [NSParagraphStyle defaultParagraphStyle];
Paul Sanders.
- Original Message -
From: Joshua Garnham
To: Paul Sanders
Cc: cocoa-dev
Essential reading:
http://developer.apple.com/mac/library/documentation/cocoa/Conceptual/MemoryMgmt/MemoryMgmt.html
The 'memory management rules' are not complex. A much bigger
problem is avoiding memory leaks.
Paul Sanders.
- Original Message -
From: "Charles Jenki
a note of caution though: nothing is ever freed with this
option enabled (which, when you're only debugging, is not really
important).
And here is the 'tao of debugging' for OS X, which has a useful
section on memory-related matters:
http://developer.apple.com/mac/library/te
I imagine bindings are an easy
place to get lost in.
Paul Sanders.
- Original Message -
From:
To:
Sent: Thursday, January 07, 2010 2:10 PM
Subject: Re: Bindings blues
On 7 Jan 2010, at 00:04, Rob Keniger wrote:
>
> I've fought this problem too, it's a regression in 10.6 as t
Correct. Nothing happens until the window is 'flushed' (which
normally happens in the event loop). It is one of the joys of
programming on the Mac (compared to Windows).
Paul Sanders
- Original Message -
From: "David Blanton"
To: "cocoa-dev List"
Se
). You could also subclass
the content view if you want to (you can do this in Interface
Builder) and draw directly into that.
Paul Sanders.
- Original Message -
From: "David Blanton"
To: "Kyle Sluder"
Cc: "cocoa-dev List"
Sent: Friday, January 08, 2010 8
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