ge, and has not happened
since...
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> Actually I have big DB, so for a single change it will take lot of time to get
> reflected
NSTableView only fetches data for rows as they are displayed, so it should
not take a long time to redraw.
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> ... well, unless you have variable-height rows. Then (potentially
> complex) calculations have to be done to determine those cells that do
> need to be drawn.
>
> Corbin? Do I have this right?
Well yes. Although that can be solved with the right underlying model...
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are truly necessary, the first draw
may still be slow, but there's really no reason a redraw should be slow
after changing one (or a few) values.
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I
typically do during development. Then very late in testing I'll look at the
whole program run and try to make sure that all never-deallocated memory is
appropriate.
Maybe you already knew this, but I thought it was worth posting for the
archives...
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king around 4D "quirks", and your end product is more
robust with a richer and more thoroughly "Mac-like" interface.
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> The main
> disadvantage that plain Cocoa has over a 4G package such as 4D is the
> lack of a decent, priceworthy reporting front-end that can be used to
> easily and quickly design all sorts of printouts that has to be made.
Good point.
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hat are thread-safe.
You can also pass pointers to Objective-C objects through MPQueues. Just
watch out for the race condition of passing an autoreleased object via an
MPQueue--retain the object before putting it on the queue and release it (at
a CORRECT time) after getting it from the queue.
--
On Sep 10, 2013, at 2:19 PM, Fábio Bernardo wrote:
> without any gains
Unless, of course, you discuss apps that actually need it ;-)
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On Oct 15, 2013, at 4:10 PM, "Mills, Steve" wrote:
> No, it's the itemArray. Ignore the code you can't see in the loop. It's
> simply asking each item for its tag.
But you could have over-retained them or under-released them somewhere else,
and I think that was
On Oct 15, 2013, at 9:08 PM, Steve Mills wrote:
> I haven't retained or released anything. I'm simply calling itemArray.
What items are in the menu? How did they get there?
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-document apps,
and it works well. (I didn't even know about the NSNib stuff; I guess we
started at different ends of the docs when we first tried to figure this out,
you at nibs, and me at window controllers.)
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http:/
atency is not
good enough for a decent user experience, oh well...
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Distributed Computing” article warns against … because those fallacies don’t
> apply to tightly-bound systems like CoreData+SQLite, and are often ignorable
> in LAN-based systems like the typical app-server+db-server setup in a data
> center. But on the Internet they will bite you.
Yep, l
think you don't
need, put logging into them all, and then experiment.
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stance that has a constructor
or destructor, and this goes back to versions of GCC from at least several
years ago--trust me, I know about that ;-)
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inning of
the scope. Which actually makes it more clear what the problem with switch is.
(If the constructor were inserted at the beginning of the scope, there would be
no problem with potentially skipping over it.)
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se problems in switch cases,
correct?
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On Oct 22, 2013, at 11:17 AM, Daniel Höpfl wrote:
> OK ... but as you say, the standard should contain the answer. Next try:
Well, there's some evolution there, and this new Objective-C feature which kind
of falls in between different versions of traditional C, ANSI C, C++.
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On Nov 26, 2013, at 9:42 AM, koko wrote:
>
> On Nov 26, 2013, at 8:56 AM, Pax <45rpmli...@googlemail.com> wrote:
>
>> hy would you delete files in this manner?
>
> Need to wildcard the file names.
Get the directory contents and look for matches, or use glob
On Nov 29, 2013, at 12:58 PM, Graham Cox wrote:
> Another general question.
>
> Does anyone have a quick-and-dirty (but functional) way to hash NSData? I’m
> currently using SHA-1 but it’s quite slow. All I need is a way to determine
> whether one block of data is identical to another or not -
On Nov 29, 2013, at 2:49 PM, Kyle Sluder wrote:
> In this scheme, if there is a hash collision, you lose user data. That should
> be a non-starter. You *must* do a full bytewise comparison in case of
> collision.
a 1 in 2^64, or 2^128, or 2^256 chance, so no, it is just fine.
__
On Nov 29, 2013, at 7:40 PM, Jens Alfke wrote:
> Murmur is an excellent 32-bit hash function, but it’s not suitable for
> Graham’s use case where a collision would result in data loss.
FYI, murmur has continued to evolve, with some tweaks both for performance and
for better distribution, *and*
On Nov 30, 2013, at 3:51 PM, Mike Abdullah wrote:
> Anything short of a cryptographic hash is unsuitable for you here.
No, cryptographic or not is irrelevant. Good non-cryptographic hashes are no
more likely to have collisions on legitimate input, the only thing a
cryptographic hash adds to th
e out how much you can
shorten the hash without collisions...
BTW, IIRC, one of the weaknesses with FNV has to do with strings of 0s, and as
long as your image data is compressed, it will never contain long strings of 0s.
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On Dec 1, 2013, at 10:51 AM, Kyle Sluder wrote:
> I still find it unconscionable to handle the user’s data with any scheme that
> could potentially lose it under normal operation, regardless of how
> infinitesimal the chance.
Then you can use neither a computer nor a hard drive to handle the u
On Dec 1, 2013, at 10:51 AM, Kyle Sluder wrote:
> Just because git does it doesn’t make it okay.
Oh, and not just git, but *every* distributed system. They all depend on UUIDs
or hashes, either one of which could in theory collide.
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n argument for an alternative approach that does not
require hashing, and that's fine. But there are certainly other cases where a
hash would be what is needed, and our "monkey-brain" reaction against it would
be counter-productive, which is why I'm still flogging this..
physics guarantee some probability of data loss, then it's perfectly reasonable
to evaluate other risks against that floor--and I do have more to say on that,
but my internet connection is flaking, and I don't seem to be able to access
most of the web right now, so cannot get the a
On Dec 1, 2013, at 11:15 AM, Kyle Sluder wrote:
>> On Dec 1, 2013, at 10:01 AM, Scott Ribe wrote:
>>
>>> On Dec 1, 2013, at 10:51 AM, Kyle Sluder wrote:
>>>
>>> I still find it unconscionable to handle the user’s data with any scheme
>>> that
y greater than anything else in your life or your
customers'...
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ere are only about 2^270 or so atoms in the known universe--and
that's the highest end of the estimated range ;-)
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er than a good hash.
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Contact the
adding different
files. The amortized cost is not so low if you have users who keep adding the
same files over & over ;-)
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t this is of no
> interest to me.
>
> Is there a way to show the ButtonCell-ToolTips?
FYI, this worked in prior versions of OS X. I don't know if it is a bug, or a
deliberate change, but you might file a bug report.
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long. Maybe you can restructure the
HTML somehow?
Anyway, use a timer, every keystroke, instead of displaying the search, re-set
an NSTimer to fire in, say, 0.25 seconds. Display the results when either
they're short, or the timer fires b
s really not to blame.
Ah... So it doesn't like less-common Unicode characters... Curious...
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width’ value, even though I had calculated the bytesPerRow to be the correct
> offset anyway.
What were your actual values and what was the assertion?
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5.0.2 instead of 3.2.6.
???
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ought I'd note: same
behavior if you select that in IB before building, rather than switching via UI
while running--you cannot have a "proper" 1-page-at-a-time display.
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On Dec 23, 2013, at 12:08 PM, Scott Ribe wrote:
> comboBoxSelectionDidChange in my delegate is not called when the user selects
> an item using the mouse.
>
> - The target action for a selection change *is* called.
>
> - Problem is 10.6 only, it is called as expected on 1
NewGWorldPtr)
could have affected this.
On Dec 24, 2013, at 10:24 AM, Scott Ribe wrote:
> On Dec 23, 2013, at 12:08 PM, Scott Ribe wrote:
>
>> comboBoxSelectionDidChange in my delegate is not called when the user
>> selects an item using the mouse.
>>
>> - The target act
s, but I had it right in the code, copy/paste doesn't get the colon as
part of the word.
Anyhow, as I just posted, it's fixed--mysteriously enough.
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hecked (and am considering turning it
off, but need to figure out what I libraries I should add).
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On Dec 30, 2013, at 2:06 PM, Scott Ribe wrote:
> Some things I suppose I should note:
>
> - Xcode 5.0.2
> - All software updates applied to all OSs.
> - I am using the same copy of Xcode under both 10.8 & 10.9.
> - I am not ignoring compiler warnings ;-)
> - There is
On Dec 30, 2013, at 2:39 PM, Quincey Morris
wrote:
> On Dec 30, 2013, at 13:06 , Scott Ribe wrote:
>
>> Does anyone have any further suggestion for me???
>
> The release notes for 10.6 say this:
>
>> For apps linked on or after SnowLeopard, if a combo box is confi
ice you can offer to help me?
Just dive in. It's not hard. Unfortunately, I haven't done this from scratch
since Xcode 2, so I can't tell you exactly what to do but...
Name a file .mm. Include some C++ headers. Write some C++ code. See how far you
get ;-)
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On Jan 29, 2014, at 6:02 PM, Greg Parker wrote:
> Lisp probably did it before that.
Hell, Lisp machines did it in hardware ;-)
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On Jan 30, 2014, at 1:38 PM, Peter Teeson wrote:
> ...so just wanted to find out what has changed.
Support for most of C++11
:-) :-) :-)
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>>
>> This email sent to rui.pach...@gmail.com
>
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&g
d certainly be worthless to combine
the baroque complexity of C++ with the dispatch performance of Java...
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ild of your app and check the tooltips on 10.9 (or 10.8 for
that matter)...
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On Feb 5, 2014, at 5:42 PM, Graham Cox wrote:
> My older builds show the tooltips fine on 10.9 (compiled against 10.8 SDK
> with Xcode 4.6.x).
That's weird, because mine do not. (Compiled against 10.6 SKD with Xcode 3.2.6.)
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_all_ methods that return objects have to return a retained reference for
> the caller to release. This would end up adding a huge number of
> retain/release calls, which I'm pretty sure would affect performance.
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On Feb 21, 2014, at 2:26 PM, Bradley O'Hearne wrote:
> Industries such as medical (HIPAA), legal, government, education, military
> defense, etc. all have such security needs.
Well, there's certainly no such need for HIPAA compliance...
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On Feb 21, 2014, at 10:38 PM, Bradley O'Hearne
wrote:
> This is not the case on Windows. It provides the ability to block certain
> things which public API on OS X does not.
His point was that counting on that is not reliable.
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http://w
e screen shots, how
about: using fsevents to watch for the files to be created, and delete them.
(Or, in this case raise a big fat alarm so the proctor will know.)
I know, pure evil ;-)
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ps the files right on the desktop.
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ttributes there's a BSD device path for those things
that have one. I don't remember exactly where, because I actually have never
needed it and just recall seeing it in passing. But yeah, there is an
attributes dictionary you can get for a device, and there is an attribute for
the dev n
. Then your recovery code checks for a log, if it's there move any files
still in the temp location into their proper final location, and delete the log.
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_
ant to sample (or spindump) everything instead.
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rectly. Maybe it doesn't have the value you think, or maybe it's
over-released and the value is gone before it can be drawn.
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e to use such as a default, but
there should be a way to specify it.) Are you sure there is not a command line
option to pdflatex to tell it where to find gnuplot?
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of the ternary operator, if you
really want to offend the "verbosity == clarity" crowd, sprinkle your code with
some of the these:
(foo ? x : y) = @"yo";
;-)
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On Apr 24, 2014, at 9:48 AM, Scott Ribe wrote:
> (foo ? x : y) = @"yo";
Darn it, C++ once again infected a post of mine ;-)
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On Apr 24, 2014, at 2:10 PM, Alex Zavatone wrote:
> Could we throw a category on NSObject for that and then every class that
> originates with NSObject gets that lovely method?
What's wrong with the simple straightforward C way???
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dropping files
onto, then you have to select from a popup what to do with the input, then you
write your script.
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On May 17, 2014, at 5:34 PM, Scott Ribe wrote:
> On May 17, 2014, at 5:14 PM, Bob Sabiston wrote:
>
>> I’ve never used Automator, would it do this?
>
> Yes. I don't remember all the details, but from what I recall I think it
> should take you about 10 minutes to
On May 17, 2014, at 5:54 PM, Bob Sabiston wrote:
> Within Automator, you have to add a “Get Specified Finder Items” action
> before the script...
No, that's for getting the Finder's current selection.
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(303
. And if there's only 1 argument, then you only need
myScript "$1"
No need to loop over the list for 1 argument...
Of course, you might want to check the number of arguments before assuming
there's only 1 and skipping the rest of the list. (Or, as with the answer in
that t
rt, then it could be
safe, but that's a tough requirement to meet.)
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g a good tutorial on C or Objective-C is in
order. If you have, then reviewing the sections on pointers and dynamic memory
is in order.
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On May 26, 2014, at 9:05 AM, Roland King wrote:
> The first one of those is ok...
No, it's not--take a closer look ;-)
> unsigned char* databuffer = (unsigned char*)malloc(datasize);
> [datastream getBytes:&databuffer range:NSMakeRange(positionCounter,
> datasize)];
-
On May 26, 2014, at 9:32 AM, Uli Kusterer wrote:
> Oh, and as Roland wrote, don’t forget to free() the pointer once you’re done
> with it.
But, just to be 100% clear, *not* the one you get from calling the bytes method
;-)
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tely. (For read-only access.)
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On May 28, 2014, at 10:24 PM, Uli Kusterer wrote:
> That said, if you want to be really endian-safe, use an XML file format saved
> as UTF-8 like Property Lists. Most portable format there is. :-)
Thanks a lot. I have to go rinse out my mouth now.
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On Jun 4, 2014, at 10:04 PM, sonofsky2...@gmail.com wrote:
> Does anyone know weather an iPhone5 can be a USB Host Device?
No.
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avoid
all the hooha of a temporary variable and if statement:
valueA = [coder decodeObjectForKey:kValueAKey] ?: valueA;
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On Jun 17, 2014, at 7:14 AM, Mills, Steve wrote:
> The algorithm I've seen then takes the square root of that value.
If the square root of a is larger than the square root of b, then a is larger
than b ;-)
(In this case a & b will both be positive.)
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On Jun 21, 2014, at 12:16 PM, Kyle Sluder wrote:
> And as far as I can remember, developers have _always_ been responsible for
> setting up a backstop autoreleasepool.
Never.
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gt; indices match the enumerated values.
>
>
>
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On Jul 2, 2014, at 6:34 PM, Jerry Krinock wrote:
> Although it was fun to write the code to buffer and stitch the message fields
> and length fields back together, I’d like to know what is causing these 4K
> breaks.
It's the OS itself. Unix domain sockets have 4k buffers.
So there cannot
> ever be more than 4k of available data at a time, because “available” means
> “sitting in the buffer ready to be copied out”.
>
> —Jens
Which means, that until you read the 4K in the buffer, the sending side is
blocked.
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On Jul 7, 2014, at 8:01 PM, SevenBits wrote:
> Is there any supported way to get the UUID of a FAT-formatted drive? Or
> another method which can uniquely identify USBs of all major filesystem types?
FAT drives do not have UUIDs.
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rial # with
manufacturer). But I am sure you can get the answer to that question on Apple's
usb list ;-)
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fact
that you did not (yet, at least) discover this bug on 32-bit is just
coincidence. So check out your retain/release/autorelease handling of the
dictionary.
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re not
sandboxed, I'd just use domain sockets.
<https://developer.apple.com/library/mac/documentation/Darwin/Reference/Manpages/man4/unix.4.html>
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On Aug 4, 2014, at 11:47 AM, Uli Kusterer wrote:
> You can have a domain that is shared by two apps from the same manufacturer.
Careful, I've had lots of problems with that--changes to defaults not being
saved when you synch, and so forth.
--
Scott Ribe
scott_r...@elevated-dev.
server,
> so those caching issues should be less of a problem.
10.6? 10.7? It was unreliable enough that I gave up long ago, before 10.8 &
10.9. So it may very well work just fine if you don't need to support older OS
versions.
--
Scott Ribe
scott_r...@elevated-dev.com
http://www.e
etter if people would learn to quit
incorrectly referring to % as mod, but I guess that ship has sailed (all the
way off the edge of the earth, actually)...
--
Scott Ribe
scott_r...@elevated-dev.com
http://www.elevated-dev.com/
(303) 722-0567 voice
__
cross vast numbers of web
sites. K&R C stated that the direction of truncation and sign of result were
machine-dependent for negative operands. The C99 standard tightened that up,
making % into a well-specified remainder operator.
--
Scott Ribe
scott_r...@elevated-dev.com
http://w
n is precise and covers that case, and some programming
languages just do not implement it.
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Scott Ribe
scott_r...@elevated-dev.com
http://www.elevated-dev.com/
(303) 722-0567 voice
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uncation was undefined for division with
negative integers, but C99 fixed that.
--
Scott Ribe
scott_r...@elevated-dev.com
http://www.elevated-dev.com/
(303) 722-0567 voice
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