> On 11 Feb 2016, at 20:44, Dan Lau wrote:
>
> If a file has its contents mapped using NSData's
> initWithContentsOfFile + NSDataReadingMappedIfSafe,
> deleting it doesn't appear to affect reading it's mapped contents. Does
> anyone know if NSData uses mmap(2) under the hood to ensure that this
On Feb 17, 2014, at 2:08 , Clark Smith Cox III wrote:
>> I didn't say take them out. I said why do they need to return an
>> autoreleased object.
>
> Because they always have, and their semantics cannot be changed without
> breaking decades worth of non-ARC code.
Sort of like the way GC did,
On Dec 2, 2013, at 15:16 , Scott Ribe wrote:
> On Dec 2, 2013, at 7:57 AM, Marcel Weiher wrote:
>
>> Then you can twiddle the hash to get you a good compromise of speed vs.
>> collisions.
>
> You want to optimize the hash further? Only hash the first 1MB.
Yup, th
On Dec 1, 2013, at 15:36 , Graham Cox wrote:
> Scanning my entire hard drive (excluding hidden files), which took several
> hours, sure I had plenty of collisions - but absolutely no false ones - they
> all turned out to be genuine duplicates of existing files. This is using the
> FNV-1a 64-b
Hmm…I’ve had cases where the preferences were corrupted (presumably by Apple, I
was only using the APIs) and prevented the app from launching.
In terms of overall problems I think this was second to “I lost my license, can
you help me”.
Marcel
On Nov 27, 2013, at 19:38 , Alex Kac wrote:
> Wh
On Oct 4, 2013, at 20:30 , Tom Davie wrote:
> Right, really the confusion stems from the fact that objective-c has a
> strange behaviour when dealing with the type “id”.
Actually, “id” is not “strange” at all. It just uses the very simple Smalltalk
semantics: an object *always* responds to
On Oct 2, 2013, at 19:44 , Dave wrote:
> On 1 Oct 2013, at 18:26, Marcel Weiher wrote:
>>> http://m.gunwharf-quays.com/whats-on/policing-through-ages
>>
>> As far as I can tell, that link delivers an ics file, “event.ics”, which is
>> then opened automatically
On Oct 1, 2013, at 13:02 , Dave wrote:
>
> http://m.gunwharf-quays.com/whats-on/policing-through-ages
>
> If you open the above link on an iPhone and then click the Add to Calendar
> button, you will that it appears to add an event to the calendar WITHOUT
> asking the user for permission! Ho
On Sep 21, 2013, at 22:38 , Markus Spoettl wrote:
> I have a UIView on iOS that shares (a lot of) code with an NSView I have on
> OSX. That code relies on a LLO (lower left origin) coordinate system and it's
> not an option to change that.
What’s the code? Mostly drawing?
> So I transform
On Sep 17, 2013, at 17:35 , Fritz Anderson wrote:
>> On Sep 16, 2013, at 18:51 , Jeffrey Oleander wrote:
>>
>>> If you want to know the total number of objects to be archived, then you
>>> need to count them, at some time or another. To count them, you need to
>>> walk the object tree before
On Sep 17, 2013, at 10:03 , Graham Cox wrote:
> This is very much a worst-case. The file contains a 400MB embedded TIFF
> image, which is the bottleneck. The archive probably only has a thousand
> objects in it.
Ahh, so the ‘other' case: rather than large numbers of objects, a few really
l
Hi Graham!
On Sep 16, 2013, at 20:26 , Graham Cox wrote:
> Documents get saved in the background, so in some ways it doesn't matter how
> long they take, but when waiting for a very big file to open, there can be a
> noticeable delay (maybe 10-15 seconds) between the Open dialog going away and
On Sep 16, 2013, at 18:51 , Jeffrey Oleander wrote:
> If you want to know the total number of objects to be archived, then you
> need to count them, at some time or another. To count them, you need to walk
> the object tree before you start actually archiving... which may take a
> signifi
.
For example:
On Sep 15, 2013, at 16:30 , Marcel Weiher wrote:
> Do all the cleanup you want to do and then exit(0) ?
> But yeah, NSApplicationMain doesn’t return, and that silly autorelease pool
> most people put in main() these days never gets released, just accumulating
> any o
On Sep 10, 2013, at 23:47 , Tom Davie wrote:
> Note, this was actually more significant on x86, where most of the mess
> caused by CISC (like having bugger all registers) got sorted out.
? VAX had 16, M68K had 16, hmm, NS32032 only had 8. I’d say this was a an
Intel ’86 problem, not a CISC
On Sep 14, 2013, at 16:58 , David Duncan wrote:
> On Sep 14, 2013, at 7:37 AM, vipgs99 wrote:
>> So do I need replace all int to NSInteger?
>
> Technically no, but generally you do need to evaluate every usage of data
> types of a specific width and ensure that in 64-bit mode you won’t exceed
On Sep 15, 2013, at 17:04 , Kevin Meaney wrote:
> On 15 Sep 2013, at 15:30, Marcel Weiher wrote:
>> Do all the cleanup you want to do and then exit(0) ?
>
> I was doing exit(0) but after reading this discussion I thought it would be
> cleaner to do the CFRunLoopStop on t
On Sep 15, 2013, at 10:32 , Gerriet M. Denkmann wrote:
> I have a Helper Tool, running as root, started via SMJobBless and
> communicating vie Xpc.
>
> Works fine, but:
> 1. it cannot stop (CFRunLoopStop),
Do all the cleanup you want to do and then exit(0) ?
Marcel
On Sep 11, 2013, at 10:38 , John McCall wrote:
>> [reduced need for Café Macs dinner tickets]
>
> Fortunately. :)
But you do know where to get them anyway…? ;-)
>> [inline reference counts]
>
>
> Right. ARC doesn’t replace the benefit of having an inline reference count.
> I think if we c
Hi Bill,
On Sep 12, 2013, at 18:57 , Bill Cheeseman wrote:
> As I recall, [Ali’s technote] stated that the "return [[x retain]
> autorelease]" pattern is preferred for getters and gave many reasons for
> preferring it. I understand that @synchronize generates getters that comply
> with this p
Hi John!
On Sep 10, 2013, at 19:26 , John McCall wrote:
> On Sep 9, 2013, at 4:15 AM, Marcel Weiher wrote:
>> [Optimizations in ARC are there to mitigate pessimizations]
>
> For what it’s worth, the autorelease optimization was planned; the
> performance problem it so
On Sep 10, 2013, at 21:52 , Ken Thomases wrote:
> On Sep 9, 2013, at 3:49 AM, Marcel Weiher wrote:
>
>> The pattern I adopted long ago to avoid that sort of situation is to have an
>> instance variable for my temps, in which case the code becomes:
>>
>>
Just to add a tiny wrinkle:
On Sep 9, 2013, at 20:27 , Jens Alfke wrote:
> On Sep 9, 2013, at 10:48 AM, Jeffrey Oleander wrote:
>> [..] Some do, but the dread of customer rebellion is strong, and they want
>> to enter them in the slap-dash, hurried, harried ways they're used to
>> writing them
On Sep 9, 2013, at 19:35 , Jens Alfke wrote:
>
> On Sep 9, 2013, at 10:14 AM, Marcel Weiher wrote:
>
>> Premature optimization is the root of all evil!
>
> I’m not sure if you meant that ironically, but it’s absolutely not premature.
Absolutely! On both counts. It
On Sep 9, 2013, at 19:20 , Tito Ciuro wrote:
>> On Sep 9, 2013, at 10:14 AM, Marcel Weiher wrote:
>> Premature optimization is the root of all evil!
> What's premature about it?
Nothing:
>> Er, I misspelled: “very coo
On Sep 9, 2013, at 19:05 , Jean-Daniel Dupas wrote:
>
> Le 9 sept. 2013 à 18:11, Jens Alfke a écrit :
>
>> [fg160,160,160;16:34:40.488| [fg0,128,0;[;NSDateFormatter took 26.97
>> µsec
>> [fg160,160,160;16:34:48.649| [fg0,128,0;[;CBLParseDatetook 0.47
>> µsec (58x)
>
> Isn't
Hi Jens,
Premature optimization is the root of all evil!
Er, I misspelled: “very cool, nice job!”
On Sep 9, 2013, at 18:11 , Jens Alfke wrote:
> [..]
> [fg160,160,160;16:34:40.488| [fg0,128,0;[;NSDateFormatter took 26.97 µsec
> [fg160,160,160;16:34:48.649| [fg0,128,0;[;CBLParseDate
On Sep 3, 2013, at 16:54 , Fritz Anderson wrote:
> On 2 Sep 2013, at 12:47 AM, Marcel Weiher wrote:
>
>> This gets (mis-)quoted out of context way too much (my emphasis):
>>
>> "We should forget about small efficiencies, say about 97% of the time:
>>
On Sep 9, 2013, at 11:33 , Tom Davie wrote:
>> On 9 Sep 2013, at 10:18, Jean-Daniel Dupas wrote:
>>
>> And does the profiler explicitly shows that ARC runtime code is the culprit
>> ?
>
> Yes, it does.
Isn’t it strange how when someone says “oh, and ARC is faster”, without
measurements, t
On Sep 9, 2013, at 9:44 , Kyle Sluder wrote:
> Thirded.
Countered. :-)
> I thought I wouldn't like it.
I thought I would LOVE it, and when I actually used it was “meh”. Not just the
additional rules/complexity when dealing with the C side of things (which I do
quite a bit), but more import
[this seems to have bounced earlier]
Hi Kyle, Izak,
On Aug 16, 2013, at 19:18 , Kyle Sluder wrote:
> As Ken Ferry described in his Auto Layout session at WWDC 2011, the specific
> solver used by Apple is based on the Cassowary constraint engine.
Yes, the algorithm involved is a variant of the
On Sep 3, 2013, at 12:52 , Jonathan Taylor
wrote:
> I have an objective c object which contains a number of properties that serve
> as parameters for an algorithm. They are bound to UI elements. I would like
> to take a snapshot copy of the object that will be used for one whole run of
> the
On Sep 4, 2013, at 10:56 , Jonathan Taylor
wrote:
> On 3 Sep 2013, at 19:49, Marcel Weiher wrote:
>> Unless there is some dire reason not to do this, I would make a copy on the
>> main thread every time the UI changes, and stash that copy somewhere the
>> worker thread
On Sep 1, 2013, at 18:26 , Uli Kusterer wrote:
> Honestly, I wouldn’t use non-keyed archiving anymore these days. Either you
> need performance so badly that you create your own file format (or use
> something specialized for a particular need, like sqlite), or you use keyed
> archiving. It’s
Hi Graham,
thanks for sharing your experience, that’s really helpful!
On Sep 1, 2013, at 11:54 , Graham Cox wrote:
> On 31/08/2013, at 6:48 PM, Marcel Weiher wrote:
>> So you’ve had good practical experience with forward/backward compatible
>> designs?
>
> Yes.
>
On Aug 28, 2013, at 16:02 , Graham Cox wrote:
> It seems overall that I was right in that once you can get to a stream (font
> file) or a name, you're home and dry.
"Home and dry" might be overstating things a bit :-) You’re at the starting
line.
> CGFontCreateWithDataProvider obviously im
Hi Uli,
thanks for your in-depth response!
On Aug 28, 2013, at 20:38 , Uli Kusterer wrote:
> On Aug 28, 2013, at 4:53 PM, Marcel Weiher wrote:
>> does anyone have practical experience with the forward/backward
>> compatibility aspect of keyed archiving? That is define a fi
Hi folks,
does anyone have practical experience with the forward/backward compatibility
aspect of keyed archiving? That is define a file format using keyed archiving
where backward and forward compatibility was both desirable and achieved?
Thanks!
Marcel
On Aug 27, 2013, at 14:46 , Graham Cox wrote:
> Parsing a PDF, I need to handle the Tf (set font) operator. The font
> situation in PDF files is inordinately complicated, and reading the spec
> alone is not really leading to the light-bulb moment.
Yes, there are many dark tunnels ahead...
>
On Aug 21, 2013, at 18:18 , Erwin Namal wrote:
> Hi,
>
> My app's menu extra icon should reflect meaningful information to the user.
> However, there are too many cases to draw icons beforehand. It would be
> easier to programatically prepare the icon on the fly.
> What would be the best way
On Aug 24, 2013, at 22:09 , Andreas Grosam wrote:
> What's the purpose of NSValue's class method
>
> + (NSValue *)valueWithBytes:(const void *)value objCType:(const char *)type; ?
>
> It seems, NSValue will simply memcpy the content of value, and "somehow"
> determine the size in bytes from
On Aug 22, 2013, at 19:43 , Steve Mills wrote:
> On Aug 22, 2013, at 12:31:55, Thomas Wetmore
> wrote:
>
>> Pre-allocation doesn't really matter as long as the re-allocations, whenever
>> they occur, respect the capacity argument.
>
> Sure they do. If you don't preallocate, but instead keep
Hi Diederik,
On Aug 22, 2013, at 1:44 , Diederik Meijer | Ten Horses
wrote:
> The content is quite large, about 1MB, it is the full text of a law.
Hmm…that isn’t really that large, we have GHz computing buzz-saws!
> The web service returns the list lightning fast, but in order to get the
>
On Aug 21, 2013, at 17:24 , Jeff Kelley wrote:
>
> *** Terminating app due to uncaught exception 'NSInvalidArgumentException',
>> reason: '+[NSMethodSignature signatureWithObjCTypes:]: unsupported type
>> encoding spec '(' in '(_GLKMatrix4={?=}[16f])8@12''
>
>
> I’m not too fa
On Aug 20, 2013, at 18:02 , Uli Kusterer wrote:
> On Aug 20, 2013, at 12:36 PM, Gerriet M. Denkmann
> wrote:
>> Well that much I know. And I also know that many NS/UI-things (which use
>> Objective-C) often have a CF-counterpart, which uses plain C and often these
>> are toll-free bridged. T
Hi Gerriet,
On Aug 18, 2013, at 17:16 , Gerriet M. Denkmann wrote:
>> [Tom Davie]
>> Uhh sorry, my bad, I meant CG*Bitmap*ContextCreate…
>>
>> http://developer.apple.com/library/ios/documentation/graphicsimaging/Reference/CGBitmapContext/Reference/reference.html
>
> Ah, now I found lots of inf
On Aug 18, 2013, at 15:06 , Kyle Sluder wrote:
> On Aug 18, 2013, at 6:28 AM, Marcel Weiher wrote:
>> On Aug 17, 2013, at 19:01 , Jean-Daniel Dupas wrote:
>>
>>> You don't have to add explicit dependency to anything as NSGeometry.h
>>> already does that
On Aug 17, 2013, at 19:01 , Jean-Daniel Dupas wrote:
> Le 17 août 2013 à 17:55, Marcel Weiher a écrit :
>> However…if you care as much about dependency management as I do (and chances
>> are you don’t), and don’t have a direct dependency on CoreGraphics in that
>> code (a
On Aug 17, 2013, at 18:03 , Maxthon Chan wrote:
> On Aug 17, 2013, at 23:52, Marcel Weiher wrote:
>> On Aug 16, 2013, at 19:04 , Kyle Sluder wrote:
>>
>>> Stop using NSRect in your method prototypes and just use CGRect.
>>
>> This is c
On Aug 16, 2013, at 19:04 , Kyle Sluder wrote:
> On Aug 16, 2013, at 12:41 PM, "Gerriet M. Denkmann"
> wrote:
>> On 16 Aug 2013, at 22:59, Kyle Sluder wrote:
>>> Xcode does know this. But if you're building for 32-bit OS X, it will
>>> correctly complain.
>>
>> When I build for Mac OS X CGR
On Aug 16, 2013, at 19:04 , Kyle Sluder wrote:
> On Aug 16, 2013, at 12:41 PM, "Gerriet M. Denkmann"
> wrote:
>> On 16 Aug 2013, at 22:59, Kyle Sluder wrote:
>>> Xcode does know this. But if you're building for 32-bit OS X, it will
>>> correctly complain.
>>
>> When I build for Mac OS X CGR
On Jul 8, 2013, at 18:04 , Jens Alfke wrote:
>
> On Jul 7, 2013, at 1:37 PM, Frederick Bartram wrote:
>
>> Have you tried using NSData to store C-arrays?
>
> Or alternatively use NSPointerValue to wrap a pointer to a malloc’ed C array
> as an object.
It seems to me that an array of float
Hi Jens,
On Apr 25, 2013, at 18:10 , Jens Alfke wrote:
> On Apr 25, 2013, at 1:20 AM, Oleg Krupnov wrote:
>
>> This breaks encapsulation of objects with block properties (e.g.
>> MyAnimation.completionBlock)
>
> I understand the problem you're describing (and yes, I've had a couple of
> memo
> So I was looking for a graphics library in the Developer Docs that serves
> both Mac-Apps and iOS-Apps.
>
> I found references to polylines in a MapKit.
> There is of course Quartz2D and OpenGL.
>
> So which of these libraries or perhaps there is another I have not heard of
> yet is best at
On Mar 22, 2013, at 23:27 , Quincey Morris
wrote:
> The reason for this is not much about performance. ('atomic' is slower, but
> not by much.)
On my machine, the difference is around 4x for the read accessor, 3 ns
nonatomic vs. 13ns atomic.
Cheers,
Marcel
___
On Mar 19, 2013, at 1:19 , Jens Alfke wrote:
>
> On Mar 18, 2013, at 5:14 PM, Rick Mann wrote:
>
>> NSArchiver calls look like -setValue:forKey:, so it seems reasonable that
>> the protocol could be usurped to write out fairly clean user defaults plists.
>
> There’s a lot of other gunk the
ng-context.html
Hope this is useful.
Marcel
On Jun 16, 2012, at 21:37 , Marcel Weiher wrote:
> MPWDrawingContext is a light-weight Objective-C wrapper around CoreGraphics
> CGContextRef and corresponding functions.
>
> Code is on Github:https://github.com/mpw/MPWDrawingCont
On Sep 11, 2012, at 4:28 , Charles Srstka wrote:
> On Sep 10, 2012, at 9:23 PM, Quincey Morris
> wrote:
>
>> It doesn't need "all the extra scaffolding". KVC will peer quite happily
>> into your instance variables by default. What you don't get for free, in
>> that case, is KVO compliance
More specifically, CGContextBeginTransparencyLayer() and
CGContextEndTransparencyLayer() will do what you need, in case you can't use a
single bezier path.
You set the global alpha to the transparency you want, start the transparency
layer, draw *without the alpha*, end the transparency layer.
MPWDrawingContext is a light-weight Objective-C wrapper around CoreGraphics
CGContextRef and corresponding functions.
Code is on Github:https://github.com/mpw/MPWDrawingContext
Infrequently Asked Questions:
Why would anyone need an Objective-C drawing context?
In short, while CoreGraphics
On Jan 19, 2012, at 1:33 , Ken Thomases wrote:
> On Jan 18, 2012, at 6:12 PM, Marcel Weiher wrote:
>> On Jan 14, 2012, at 18:37 , Kyle Sluder wrote:
>>
>>> Breaking this pattern should be a conscious decision.
>>
>> I'd say that the opposite is tr
Hi Kyle,
On Jan 14, 2012, at 18:37 , Kyle Sluder wrote:
> On Jan 14, 2012, at 2:53 AM, Marcel Weiher wrote:
>> You shouldn't push updates to the UI, the UI should query the model, and it
>> should do it at "human speed", not at whatever speed the machine can
On Jan 13, 2012, at 15:23 , Eric E. Dolecki wrote:
> I have XML like this:
>
>
>
>
>
>
>
>
Don't know much about TBXML, but with MAX, the following code parses the file
(including model classes and scaffolding):
-- snip
#import
@interface User:NSObjec
Hi Andrew,
On Jan 13, 2012, at 6:57 , Andrew wrote:
> The result of this is that the UI updates really frequently and the
> estimated time to complete and the download rate jump around a lot. I
> would love it if I could tell cocoa to only update the UI once per
> second instead of immediately wh
On Apr 9, 2010, at 10:35 , McLaughlin, Michael P. wrote:
> My main thread has an NSArray of Subtasks and sends data to each via
>
> Npending = numProcessors;
> for (k = 0;k < numProcessors;k++) {
> Subtask *aTask = [myTask objectAtIndex:k];
> [aTask sendData:&theData numBytes:sz ta
On Mar 2, 2010, at 10:18 PM, Jeff Johnson wrote:
> My question is, how do I use NSXMLDocument safely on a non-main thread? I
> need to do this for performance reasons, otherwise my app can pinwheel during
> XML parsing.
Maybe you need faster XML parsing?
Marcel
__
Hi Ian,
well, in a sense the lack of examples *is* illustrating the best practices
concerning setup wizards :-)
Cheers,
Marcel
On Jan 13, 2010, at 9:54 , Ian Piper wrote:
> For one of my applications I want to do a check at startup to see whether a
> profile and password has been set for th
Hi Chris,
Let me start with what I'm trying to accomplish. I have an app that
is constantly running an animation, which's attributes are
determined after downloading and parsing some XML.
How large are the XML files? Does each contain multiple animation
steps or just one?
The XML is
On Jun 25, 2009, at 0:54 , Peter Duniho wrote:
Furthermore, it is more typical that there _is_ space already
available on the heap to satisfy an allocation request, and in a
typical GC system allocations are much faster than for the alloc/
free paradigm. I admit, I don't know the specific
On Jun 24, 2009, at 22:49 , Greg Titus wrote:
...whereas this part talks specifically about the collector. Is
there a downside in SnowLeopard to CFRetain/CFRelease when not
using the collector?
There's no _new_ downside to CFRetain/CFRelease. It's just the
existing downside (collected
On Jun 24, 2009, at 11:00 , Bill Bumgarner wrote:
On Jun 24, 2009, at 12:51 PM, Quincey Morris wrote:
In a nutshell, for folks like me who regularly use CFCreate …
CFRelease in loops, what are the benefits of GC?
If CFCreate/CFRelease is precisely what you want to do, there are
no benefit
On May 13, 2009, at 8:30 , Karan, Cem (Civ, ARL/CISD) wrote:
I have an object that I've turned into a singleton via the
techniques described at:
http://developer.apple.com/DOCUMENTATION/Cocoa/Conceptual/CocoaFundamentals/CocoaObjects/CocoaObjects.html#/
/apple_ref/doc/uid/TP40002974-CH4-SW3
On May 13, 2009, at 11:27 , Mike Mangino wrote:
I'm noticing something related that is causing my problems. I have
mocking working for custom types. When I try to change the class of
a string, however, I get a crash.
-(void) testImplementationOnString {
NSString *s = [NSString st
On May 9, 2009, at 20:15 , Chris Hanson wrote:
On May 9, 2009, at 7:39 PM, Bright wrote:
when I open a Apple's samplecode of cocoa and run it, the
mistake of “command developer usr bin gcc-4.0 failed with exit
code 1" is occur.
How to solve it?
Are you just double-clicking the proj
Hi Andreas,
that's an interesting way to do the conversion.
On May 9, 2009, at 10:50 , Andreas Grosam wrote:
int hexDigitToInt(char d)
{
int result;
switch (d) {
case '0': result = 0; break;
case '1': result = 1; break;
[snip]
case 'E': result = 14; break;
cas
On May 8, 2009, at 6:50 , Michael Ash wrote:
Begin forwarded message:
From: Marcel Weiher
Date: May 7, 2009 10:05:29 PDT
And yes, the code that I use explicitly runs the runloop, and it
is the
code that runs the runloop that both allocates the
NSURLConnection and
then
cleans up after
Hi Jeffrey,
I have a multithreaded application with several NSOperationQueues
and it appears as if under heavy load conditions I'm overwhelming
the garbage collector so-to-speak.
From what you describe, it looks like your analysis is spot on.
I essentially have three queues which can be pr
On May 7, 2009, at 21:12 , Michael Ash wrote:
On Thu, May 7, 2009 at 11:53 PM, Marcel Weiher > wrote:
On May 7, 2009, at 17:29 , Jeff Johnson wrote:
On May 7, 2009, at 6:00 PM, Marcel Weiher wrote:
That's not what I was talking about. I was talking about the
possibility
that th
On May 7, 2009, at 17:29 , Jeff Johnson wrote:
On May 7, 2009, at 6:00 PM, Marcel Weiher wrote:
That's not what I was talking about. I was talking about the
possibility that the 'owned' caller manually runs the run loop
right after it calls the delegate callback, so any
On May 7, 2009, at 10:39 , Jeff Johnson wrote:
Actually, you were initially claiming that there was such a
guarantee, and misquoting the docs to 'prove' your point.
The memory management docs tell you what you should do, but nothing
in Objective-C or Cocoa requires you to follow them.
Wel
On May 7, 2009, at 9:43 , Jeff Johnson wrote:
You misunderstand my argument. I'm not claiming that autorelease
provides some magical guarantee.
Actually, you were initially claiming that there was such a guarantee,
and misquoting the docs to 'prove' your point.
I'm claiming that you oug
[catching up with my cocoa-dev backlog]
On Mar 10, 2009, at 20:36 , Michael Ash wrote:
On Tue, Mar 10, 2009 at 2:47 PM, Robert Mullen
wrote:
Too little resource, too little experience, too little return. The
first two
are because this is a skunk works type corporate project that
basically
On May 7, 2009, at 8:37 , Jeff Johnson wrote:
On May 7, 2009, at 2:38 AM, Marcel Weiher wrote:
EXACTLY. Autorelease allows ownership transfer from called
methods to occur without thrusting ownership on those that don't
want it.
That's one use, anyway.
No. That is wha
On May 6, 2009, at 23:56 , Jeff Johnson wrote:
On May 7, 2009, at 12:27 AM, Marcel Weiher wrote:
OK, quiz time: the reason for NSMutableString to relinquish
ownership is to (a) release the object (b) allow someone else to
take ownership?
Answer: always (a), sometimes (b), and sometimes
On May 6, 2009, at 21:34 , Jeff Johnson wrote:
Ownership 'transfer' is rare. If you call +alloc or -copy, for
example, ownership is transferred to the caller. Otherwise,
there's no such thing.
The fact that you think this is a testament to how well -
autorelease works :-)
How about +[N
On May 6, 2009, at 18:45 , Jeff Johnson wrote:
I think you misunderstand the problem that autorelease is trying to
solve, which is to allow ownership transfer from a callee back to
its caller, not to just simply delay a release until "later".
Ownership 'transfer' is rare. If you call +al
On May 6, 2009, at 18:31 , George King wrote:
Nick, thanks for the tip, you set me on the right track. Here is my
new understanding of the problem. In my framework target settings,
the Dynamic Library Install Name is set to:
$(DYLIB_INSTALL_NAME_BASE:standardizepath)/$(EXECUTABLE_PATH)
Th
Hi Greg,
hope the runtime is being docile. :-)
On May 4, 2009, at 23:24 , Greg Parker wrote:
That's right. In some discussions of object-oriented programming, a
distinction is made between "value objects" and "reference objects".
Two value objects can be "equal" if they share the same "valu
On May 6, 2009, at 15:49 , Jeff Johnson wrote:
I still maintain that it's never safe to release/autorelease an
object
from inside one of it's delegate calls. If it works at all, you're
implicitly relying on an implementation detail that's subject to
change.
I find this idea somewhat suspe
On May 4, 2009, at 13:37 , Michael Ash wrote:
On Fri, May 1, 2009 at 3:28 AM, Erg Consultant > wrote:
That's a pretty lame approach considering that Apple hides theirs.
Seems like a poor example to me, given that the path to the iTunes DRM
directory was posted right here in this very thread (
On May 1, 2009, at 3:20 , DairyKnight wrote:
I'm trying to build a simple scribble program with Cocoa, and got
some
questions I couldn't solve. Hope someone here could help.
1. How can I perform a proper drawing in somewhere else rather than
drawRect: ? Like the Win32 GetDC(HWND) and R
Not sure this was solved.
On 13.Mar, 2009, at 5:45 , Joe Turner wrote:
NSImage *original = [NSImage imageNamed:NSImageNameComputer];
[original setSize:NSMakeSize(10.0f, 10.0f)];
-> this will not make your bitmap 10x10 pixels, but just change the
DPI settings to make sure it
On Apr 30, 2009, at 12:36 , Jeffrey Oleander wrote:
%S specifies a null-terminated array of 16-bit unicode
characters. What you're passing is an NSString object.
So the specifier should be the object specifier, %...@.
Yes, that is what I had tried first. Still, the warning
comes and goes.
On 29.Apr, 2009, at 21:02 , Charles Srstka wrote:
On 29 Apr 09, at 06:15, Mark Douma wrote:
Carbon and the Finder are displaying the filenames as is, as HFS
allows slashes to be in a filename, and the colon is the separator.
Cocoa and the BSD layer, on the other hand, do swap the slashes a
On Apr 20, 2009, at 23:09 , Alex Kac wrote:
I am trying to log some specific error conditions in a fairly
dynamic environment (of course Obj-C's forté), and would like to log
some sort of backtrace of method calls that reached a specific method.
What is the best way to get that info? This
On Apr 16, 2009, at 18:59 , Michael Ash wrote:
On Thu, Apr 16, 2009 at 2:47 PM, WT wrote:
since he'll be dealing with the string's raw bytes, won't Miles
have to
manually add a null byte to terminate the search string?
The strnstr() function takes a length, and can thus be safely used on
On Apr 16, 2009, at 12:01 , Miles wrote:
It looks like I have the search working like this, but I have to
double-space the dictionary file to have a leading \n.
No, you just need one initial extra newline at the start, the newline
from the end of the last string matches up with the start
On Apr 16, 2009, at 10:10 , Miles wrote:
Marcel, NOW we're talking. This has really been such an eye-opening
thread.
Now it's googling time to try to figure out how to search for a
string in there.
1. Get the bytes out of your search string in the encoding that your
dictionary is in
2.
ently. Learned something new with your message.
On Apr 16, 2009, at 12:35 AM, Marcel Weiher wrote:
I would do the following:
1. map the file into memory using -[NSData
dataWithContentsOfMappedFile:] (or mmap() if you really want to)
2. Do not convert to individual objects for the words
3. ge
On Apr 9, 2009, at 17:00 , Miles wrote:
I have created a static method creating and returning an animation
that I
use in various places in my application.
"Class method", please. Pretty please with sugar on top. :-)
Nothing static about it...
Cheers,
Marcel
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