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• iPhone OS: Fetching a random entity instance using NSPredicate Nsfetchrequest and core data

  - by nickthedude

  Working on an app where I have a large collections of managed objects against which I want to fetch a few random instances. My question is, is there any way I can use NSPredicate and NSFetchRequest to return several objects at random. I saw that you could actually add a NSFetchRequest into the entity using the data modeler, any way to do the random fetch using this? Also what would be the best method for determining the "count" of a table so I can set the bounds of the random number generator. let me know if you need more details. Thanks! Nick

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• Mac OS - Built SVN from source, now Apache2 not loading sites

  - by Geuis

  This relates to another question I asked earlier today. I built SVN 1.6.2 from source. In the process, it has completely screwed up my dev environment. After I built SVN, Apache wasn't loading. It was giving me this error: Syntax error on line 117 of /private/etc/apache2/httpd.conf: Cannot load /usr/libexec /apache2/mod_dav_svn.so into server: dlopen(/usr/libexec/apache2/mod_dav_svn.so, 10): no suitable image found. Did find:\n\t/usr/libexec/apache2/mod_dav_svn.so: mach-o, but wrong architecture It appears that SVN over-wrote the old mod_dav_svn.so and I am not able to get it to build as FAT, and I can't recover whatever was originally there. I resolved this(temporarily?) by commenting out the line that was loading the mod_dav_svn.so and got Apache to start at this point. However, even though Apache is running I am now getting this error when trying to access my dev sites: Directory index forbidden by Options directive: /usr/share/tomcat6/webapps/ROOT/ I have Apache2 sitting in front of Tomcat6. I access my local dev site using the internal name "http://localthesite". I have had virtual directories set up that have worked until this SVN debacle. Tomcat is installed at /usr/local/apache-tomcat, and webapps is /usr/local/apache-tomcat/webapps. Our production servers deploy tomcat to /usr/share/tomcat6, so I have symlinks setup on my system to replicate this as well. These point back to the actual installation path. This has all been working fine as well. None of our configurations for Apache2, Tomcat, or .htaccess have changed. Over the weekend, I performed a "Repair Disk Permissions" on the system. This was before I discovered the mod_dav_svn.so problem. I have been reading up on this all morning and the most common answer is that there is an Options -Indexes set. We have this in a config file, but it was there before and when I removed it during testing, I still got the same errors from Apache. At this point, I'm assuming I either totally borked the native Apache2 installation on this Mac, or that there is a permissions error somewhere that I'm missing. The permissions error could be from the SVN installation, or from my repair process. Does anyone have any idea what could be the problem? I'm totally blocked right now and have no idea where to check next.

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• SVN server host os

  - by volody

  Recently I was searching on how to secure svn repository, or otherwords how to enable ssl connection to svn repository for a windows server 2003. Does it make more sense to use Linux server instead?

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• Problem deploying Rails with Passenger to Mac OS X Leopard Server

  - by Meltemi

  I'm spinning my wheels... Apache is working and serving static html, png, etc. normally. Trying to get Passenger to serve a rails app out of www.mydomain.com/rails/ as it stands when i try to hit my app: www.mydomain.com/rails/myapp/railsclassname I get only an Apache 403 Errors. Nothing in myapp's Production Log. Apache2 access.log: "GET /rails/ HTTP/1.1" 403 1085 Apache2 error.log: [Fri Jun 11 22:44:01 2010] [error] [client 10.0.1.41] File does not exist: /Library/WebServer/wwwroot/rails/railsclassname i've even tried www.mydomain.com/myapp/classname Passenger, obviously, isn't routing requests made into my sub-folder rails/ to my rails app. not sure where i've screwed up. the most obvious thing is "Passenger doesn't seem to be running"... instructions I've followed just say to sudo apachectl graceful, which i've done (as well as stopped/started). new to this so go easy on me! Here's some info that might be helpful. happy to provide more as needed... As per some instruction @ Passenger site i've created a symlink from /Library/WebServer/myapp/rails - /Library/WebServer/rails/myapp/public myhost:myapp joe$ passenger-config --root /Library/Ruby/Gems/1.8/gems/passenger-2.2.14 myhost:myapp joe$ passenger-status ERROR: Phusion Passenger doesn't seem to be running. apollo:myapp joe$ cat /etc/httpd/httpd.conf ... <removed for brevity> ... # Copied From Passenger Installer LoadModule passenger_module /Library/Ruby/Gems/1.8/gems/passenger-2.2.14/ext/apache2/mod_passenger.so PassengerRoot /Library/Ruby/Gems/1.8/gems/passenger-2.2.14 PassengerRuby /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby # End Passenger Installer NameVirtualHost * <VirtualHost *:80> ServerName www.mydomain.com DocumentRoot /Library/WebServer/rails/myapp/public # <-- be sure to point to 'public'! RackBaseURI /rails <Directory /Library/WebServer/rails/myapp/public> AllowOverride all # <-- relax Apache security settings Options -MultiViews # <-- MultiViews must be turned off order allow,deny Allow from all </Directory> </VirtualHost> This last bit from NameVirtualHost on is pieced together from a number of online material i've found...as i've been desperately trying to find something/anything that'll show Passenger at least has a pulse!?!

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• 2D Engine for iPhone OS

  - by disp

  I have a pretty simple 2D flash game. It's a jump n run sidescroller and I want to port it to the iPhone. But what is the best way to do it? There is Adobe Flash Pro CS5 but I'd rather program it from the scratch in an iPhone environment. Are there any top games done by open source framekworks? Which is the best way to go?

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• Flash video hiding the cursor on Mac OS X

  - by Tibor

  I found a Core Graphics function, CGCursorIsVisible, that one can use to determine whether the mouse cursor is shown on screen. I have a small app that uses a timer to call that function a few times a second to see if the cursor is shown or hidden (as I found no way to get my app notified when the mouse cursor shown/hidden status changes). The above works correctly except… when the Flash browser plugin plays a video: the mouse cursor gets hidden after a few seconds of mouse inactivity but CGCursorIsVisible() still keeps telling me that the cursor is indeed shown as if nothing happened. What I need is to be able to tell, at any given moment, whether the mouse cursor is shown to the end user on any screen. Is there any way to do that even in the case of playing a video using the Flash plugin?

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• Compiling Gearman extension for PHP on OS-X Snow Leopard with Zend Server Community Edition

  - by GrumpyCanuck

  I was wondering if anyone else has figured out how to solve this problem. Whether I install the extension via PECL or compile it by hand, I get the same error: PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/zend/lib/php_extensions/gearman.so' - dlopen(/usr/local/zend/lib/php_extensions/gearman.so, 9): no suitable image found. Did find: /usr/local/zend/lib/php_extensions/gearman.so: mach-o, but wrong architecture in Unknown on line 0 I have no idea how to fix this problem and I can only bang my head into my desk so many times.

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• Options for Linux OS executable archive files - self installers

  - by Matt1776

  I am looking to create a web-project that is able to install with a program. The user should be able to download an archive file or tar file, run it (executable), and the setup script would ask for paths and configurable values and then unpack its 'payload' and sorting out the contents for deployment. This would be a Linux version of the MSI installer. Is there such a thing for Linux operating systems? This does not involve kernel level manipulations. All it needs to do is copy directories and files on the filesystem, which should cover about 80% if not more of all the *nix distributions.

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• IPhone OS 4.0 - Beta 3 - setContentURL on MPMoviePlayerViewController crashing the App

  - by Thom

  Hi Everyone. I had this issue, with the beta2 and I thought the beta3 was going to solve it, but I'm starting to think that I'm doing something wrong. I have a MPMoviePlayerViewController playing a video and when the video ends I'm trying to change the video for another like this: [moviePlayerViewController.moviePlayer setContentURL:newVideoURL]; The app crashes when it reaches this point. Any help/advice welcome :) Thanks Thomas

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• Mac OS X: Getting detailed process information (specifically its launch arguments) for arbitrary run

  - by Jasarien

  I am trying to detect when particular applications are launched. Currently I am using NSWorkspace, registering for the "did launch application" notification. I also use the runningApplications method to get apps that are currently running when my app starts. For most apps, the name of the app bundle is enough. I have a plist of "known apps" that I cross check with the name of that passed in the notification. This works fine until you come across an app that acts as a proxy for launching another application using command line arguments. Example: The newly released Portal on the Mac doesn't have a dedicated app bundle. Steam can create a shortcut, which serves as nothing more than to launch the hl2_osx app with the -game argument and portal as it's parameter. Since more Source based games are heading to the Mac, I imagine they'll use the same method to launch, effectively running the hl2_osx app with the -game argument. Is there a nice way to get a list of the arguments (and their parameters) using a Cocoa API? NSProcessInfo comes close, offering an `-arguments' method, but only provides information for its own process... NSRunningApplication offers the ability to get information about arbitrary apps using a PID, but no command line args... Is there anything that fills the gap between the two? I'm trying not to go down the route of spawning an NSTask to run ps -p [pid] and parsing the output... I'd prefer something more high level.

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• pdf2swf using MAC OS Batch command or Apple script

  - by Garth Humphreys

  How do I write a batch process on the Mac for pdf2swf, I want to convert all pdfs in a folder into swf. But pdf2swf doesn't have a option to convert a folder of pdfs to swfs, you have to do it one at a time. I'm not sure how if I should use a Apple script or a Shell script, either one I'm not sure how to get or assign a file name variable. pdf2swf file_name_variable.pdf -o file_name_variable.swf -T 9 -f Thanks

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• How to burn an Audio CD programmatically in Mac OS X

  - by Adion

  All the info I can find about burning cd's is for Windows, or about full programs to burn cd's. I would however like to be able to burn an Audio CD directly from within my program. I don't mind using Cocoa or Carbon, or if there are no API's available to do this directly, using a command-line program that can use a wav/aiff file as input would be a possibility too if it can be distributed with my application. Because it will be used to burn dj mixes to cd, it would also be great if it is possible to create different tracks without a gap between them.

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• Creating a variable list Pashua, OS X & Bash.

  - by S1syphus

  First of all, for those that don't know pashua is a tool for creating native Aqua dialog windows. An example of what a window config looks like is # pashua_run() # Define what the dialog should be like # Take a look at Pashua's Readme file for more info on the syntax conf=" # Set transparency: 0 is transparent, 1 is opaque *.transparency=0.95 # Set window title *.title = Introducing Pashua # Introductory text tb.type = text tb.default = "HELLO WORLD" tb.height = 276 tb.width = 310 tb.x = 340 tb.y = 44 if [ -e "$icon" ] then # Display Pashua's icon conf="$conf img.type = image img.x = 530 img.y = 255 img.path = $icon" fi if [ -e "$bgimg" ] then # Display background image conf="$conf bg.type = image bg.x = 30 bg.y = 2 bg.path = $bgimg" fi pashua_run "$conf" echo " tb = $tb" The problem is, Pashua can't really get output from stdout, but it can get arguments. Following on from what Dennis Williamson posted here. What ideally it should do is generate an output file based on information from a text file, To executed in pashua_run ore add the pashua_run around the window argument: count=1 while read -r i do echo "AB${count}.type = openbrowser" echo "AB${count}.label = Choose a master playlist file" echo "AB${count}.width=310" echo "AB${count}.tooltip = Blabla filesystem browser" echo "some text with a line from the file: $i" (( count++ )) done < TEST.txt >> long.txt SO the output is AB1.type = openbrowser AB1.label = Choose a master playlist file AB1.width=310 AB1.tooltip = Blabla filesystem browser some text with a line from the file: foo AB2.type = openbrowser AB2.label = Choose a master playlist file AB2.width=310 AB2.tooltip = Blabla filesystem browser some text with a line from the file: bar AB3.type = openbrowser AB3.label = Choose a master playlist file AB3.width=310 AB3.tooltip = Blabla filesystem browser some text with a line from the file: dev AB4.type = openbrowser AB4.label = Choose a master playlist file AB4.width=310 AB4.tooltip = Blabla filesystem random So if there is a clever way to get the output of that and place it into pashua run would be cool, on the fly: I.E load te contents of TEST.txt and generate the place it into pashua_run, I've tried using cat and opening the file... but because it's in Pashua_run it doesn't work, is there a smart way to break out then back in? Or the second way which I was thinking, was create get the output then append it into the middle text file containing the pashua runtime, then execute it, maybe slightly hacky, but I would imagine it will do the job. Any ideas? ++ I know I probably could make my life a lot easier, by doing this in actionscript and cocoa, although at present don't have time for such a learning curve, although I do plan to get round to it.

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• Enabling PostgreSQL support in PHP on Mac OS X

  - by Jordan Scales

  I'm having a terribly difficult time getting the command "pg_connect()" to work properly on my Mac. I'm currently writing a PHP script (to be executed from console) to read a PostgreSQL database and email a report. I've gone into my php.ini file and added extension=pgsql.so But, I'm met with the following error. PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/php_pgsql.so' - dlopen(/usr/lib/php/extensions/no-debug-non-zts-20090626/php_pgsql.so, 9): image not found in Unknown on line 0 PHP Fatal error: Call to undefined function pg_connect() in... (blah file here) When running phpinfo(), I see nothing about PostgreSQL, so what is my issue here?

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• Programmatically talking to a Serial Port in OS X or Linux

  - by deadprogrammer

  I have a Prolite LED sign that I like to set up to show scrolling search queries from a apache logs and other fun statistics. The problem is, my G5 does not have a serial port, so I have to use a usb to serial dongle. It shows up as /dev/cu.usbserial and /dev/tty.usbserial . When i do this everything seems to be hunky-dory: stty -f /dev/cu.usbserial speed 9600 baud; lflags: -icanon -isig -iexten -echo iflags: -icrnl -ixon -ixany -imaxbel -brkint oflags: -opost -onlcr -oxtabs cflags: cs8 -parenb Everything also works when I use the serial port tool to talk to it. If I run this piece of code while the above mentioned serial port tool, everthing also works. But as soon as I disconnect the tool the connection gets lost. #!/usr/bin/python import serial ser = serial.Serial('/dev/cu.usbserial', 9600, timeout=10) ser.write("<ID01><PA> \r\n") read_chars = ser.read(20) print read_chars ser.close() So the question is, what magicks do I need to perform to start talking to the serial port without the serial port tool? Is that a permissions problem? Also, what's the difference between /dev/cu.usbserial and /dev/tty.usbserial?

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• Writing an OS kernel in assembly with NASM

  - by Betamoo

  I want to know what is the standard way for writing a -simple- kernel to be compiled on NASM? To get it clearer: I was able to define the code block with all the following ways: [segment code] [segment .code] segment code segment .code [section code] [section .code] section code section .code I need to know what is the standard way to do that, And what is the difference between them... Thanks

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• link nasm program for mac os x

  - by Fry Constantine

  i have some problems with linking nasm program for macos: GLOBAL _start SEGMENT .text _start: mov ax, 5 mov bx, ax mov [a], ebx SEGMENT .data a DW 0 t2 DW 0 fry$ nasm -f elf test.asm fry$ ld -o test test.o -arch i386 ld: warning: in test.o, file was built for unsupported file format which is not the architecture being linked (i386) ld: could not find entry point "start" (perhaps missing crt1. fry$ nasm -f macho test.asm fry$ ld -o test test.o -arch i386 ld: could not find entry point "start" (perhaps missing crt1.o) can anyone help me?

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• image analysis and 64bit OS

  - by picciopiccio

  I developed a C# application that makes use of Congex vision library (VPro). My application is developed with Visual Studio 2008 Pro on a 32bit Windows PC with 3GB of RAM. During the startup of application I see that a large amount of memory is allocated. So far so good, but when I add many and many vision elaboration the memory allocation increases and a part of application (only Cognex OCX) stops working well. The rest of application stills to work (working threads, com on socket....) I did whatever I could to save memory, but when the memory allocated is about 700MB I begin to have the problems. A note on the documentation of Cognex library tells that /LARGEADDRESSWARE is not supported. Anyway I'm thinking to try the migration of my app on win64 but what do I have to do? Can I simply use a processor with 64bit and windows 64bit without recompiling my application that would remain a 32bit application to take advantage of 64bit ? Or I should recompile my application ? If I don't need to recompile my application, can I link it with 64bit Congnex library? If I have to recompile my application, is it possible to cross compile the application so that my develop suite is on a 32bit PC? Every help will be very appreciated!! Thank in advance

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• Good text editor for OS-X?

  - by Cyrcle

  I'm considering getting a Mac. I want to make sure I'll be able to get a good text editor for it. I'm wondering what other folks are using. Features I need - Contextual highlighting for PHP, HTML, CSS, and preferably many others FTP from a hotkey - so I can hit ctrl-s to save, then another combo to FTP it. Features I'd like - Code Completion I'm also interested in any comments in general about coding on a Mac and if it's really worth the extra $$$ to get one. Thanks

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• Mac OS X bash prompt bug?

  - by Memo

  I am trying to set my bash prompt to display the time and current directory in bold: export PS1="\[\e[1m\][\A] \w \$ \[\e[0m\]" This does apparently work, but when I use the command history (ctrl-r), after finding the command I was searching for and pressing enter, this line is not displayed correctly. Here is an example: [21:58] ~/Wyona/svn-repos/zwischengas $ (reverse-i-search)`ta': tail -F logs/log4j-cnode1.log becomes, after pressing enter: [21:58] ~/Wyona/svn-repos/zwischengas $ -F logs/log4j-cnode1.log Of course, this is not "really" a problem, since the command does work correctly, but it is still annoying. Does anybody know why this happens? And, more importantly, how to prevent/fix it? Thanks, Memo

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• iPhone OS: Tap status bar to scroll to top doesn't work after remove/add back

  - by avocade

  Using this method to hide the status bar: [[UIApplication sharedApplication] setStatusBarHidden:YES animated:YES]; When setting "hidden" back to NO, the tap-to-scroll-to-top (in UIWebView, UITableView, whatever) doesn't work any more, and requires a restart of the app to get the functionality back. Is this a bug (I filed a rdar anyhow) or have I missed a step? Should I perhaps expect this behavior since the statusBar "loses touch" somehow with the respective view?

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• undefined symbols when compiling libjingle for Mac OS X

  - by wwh37

  Compiling libjinge-0.4.0 on my Leopard returned the following errors: /bin/sh ../../../libtool --silent --tag=CXX --mode=link g++ -g -o login login-login_main.o login-xmppsocket.o login-xmppthread.o login-xmpppump.o login-xmppauth.o ../../../talk/xmpp/libcricketxmpp.la ../../../talk/xmllite/libcricketxmllite.la ../../../talk/base/libcricketbase.la -lexpat -lpthread -lssl -lcrypto Undefined symbols: "_BIO_clear_flags", referenced from: socket_read(bio_st*, char*, int)in libcricketbase.a(openssladapter.o) socket_write(bio_st*, char const*, int)in libcricketbase.a(openssladapter.o) "_BIO_set_flags", referenced from: socket_read(bio_st*, char*, int)in libcricketbase.a(openssladapter.o) socket_write(bio_st*, char const*, int)in libcricketbase.a(openssladapter.o) Any ideas? I couldn't find an answer... Thanks!

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• C Differences on windows and Unix OS

  - by zapping

  Is there any difference in C that is written in Windows and Unix. I teach C as well as C++ but some of my students have come back saying some of the sample programs does not run for them in Unix. Unix is alien for me. Unfortunately no experience with it whatsoever. All i know is to spell it. If there are any differences then i should be advising our department to invest on systems for Unix as currently there are no Unix systems in our lab. I do not want my students to feel that they have been denied or kept aloof from something.

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• Convert bitmap image information into CGImage in iPhone OS 3

  - by giftederic

  I want to create a CGImage with the color information I already have Here is the code for converting the CGImage to CML, CML_color is a matrix structure - (void)CGImageReftoCML:(CGImageRef *)image destination:(CML_color &)dest{ CML_RGBA p; NSUInteger width=CGImageGetWidth(image); NSUInteger height=CGImageGetHeight(image); CGColorSpaceRef colorSpace=CGColorSpaceCreateDeviceRGB(); unsigned char *rawData=new unsigned char[height*width*4]; NSUInteger bytesPerPixel=4; NSUInteger bytesPerRow=bytesPerPixel*width; NSUInteger bitsPerComponent=8; CGContextRef context=CGBitmapContextCreate(rawData, width, height, bitsPerComponent, bytesPerRow, colorSpace, kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder32Big); CGColorSpaceRelease(colorSpace); CGContextDrawImage(context, CGRectMake(0, 0, width, height), image); CGContextRelease(context); int index=0; for (int i=0; i<height; i++) { for (int j=0; j<width; j++) { p.red=rawData[index++]; p.green=rawData[index++]; p.blue=rawData[index++]; p.alpha=rawData[index++]; dest(i,j)=p; } } delete[] rawData; } Now I want the reverse function, which converts CML into CGImage. I know all the color and alpha information to create the image, which stored in the matrix CML, but how can I do that?

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• How to customize application menu for java application in Mac OS

  - by Sunil Kumar Sahoo

  Hi I have created a java application. I found there is an application menu and about application in Mac. I donot know how to customize those about application dialog. i Want to write my own dialog instead of that dialog. How to do this. I found that I have to use Application Adapter. Thanks Sunil Kumar Sahoo

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