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  • Why is FLT_MIN equal to zero on OS X?

    - by Nick Forge
    limits.h specifies limits for non-floating point math types, e.g. INT_MIN and INT_MAX. These values are the most negative and most positive values that you can represent using an int. In float.h, there are definitions for FLT_MIN and FLT_MAX. If you do the following: NSLog(@"%f %f", FLT_MIN, FLT_MAX); You get the following output: FLT_MIN = 0.000000, FLT_MAX = 340282346638528859811704183484516925440.000000 FLT_MAX is equal to a really large number, as you would expect, but why does FLT_MIN equal zero?

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  • How can I copy a VMware Fusion virtual machine to a FAT32 partition?

    - by Michael Prescott
    I created the virtual machine on a host running OS X. I then moved the machine to a FAT32 partition on an external drive. It moved the first time without error. Then I moved it from the external drive to a host running Ubuntu 9.10. I had to move to a FAT32 partition first because Ubuntu doesn't recognize Mac OS Extended partitions on the drive. So, the virtual machine (vm) ran on the ubuntu host for a while and then I moved it back to the FAT32 partition and from there back to the OS X host. I worked on the vm for a while on the OS X host and then attempted to move it back to the FAT32 partition. I get the following system error: The Finder can’t complete the operation because some data in “my-virtual-machine” can’t be read or written. (Error code -36) Interestingly, I can move the file to another OS X partition, just not FAT32. I also perused VMware's forums and found advice to set permissions on all files and folders to 777. I did this, but have had no success. I notice the the files within the vm package are 777 now, but there is an extended attributes symbol on their permission details "rwxrwxrwx@" Since I can copy the vm between OS X partitions, but not to non OS X partitions, and all files and folders withing the vm package and the package itself have permissions of 777, I speculate that the "@" is the problem. How can I remove the "@" or is there something else I need to modify to allow me to copy/move the vm to other hosts?

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  • Xcode: Application name in OS X cannot be localized?

    - by Andrew Chang
    I have an project named "Multi-Camera Supervisor". I make the "MainMenu.xib" file localized. Here are the menu bar in localized nib file of Xcode: For English: For Japanese: But when I ran my application in Xcode, The first item doesn't work. Here are the menu bars when my application ran: For English: For Japanese You can see that the application name was still "Multi-Camera Supervisor". Meanwhile, the application name appeared in Dock icon was not localized either. How should I solve this? How can I localize the application name not only in main menu but also in Dock?

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  • iPhone OS: Is there a way to set up KVO between two ManagedObject Entities?

    - by nickthedude
    I have 2 entities I want to link with KVO, one a single statTracker class that keeps track of different stats and the other an achievement class that contains information about achievements. Ideally what I want to be able to do is set up KVO by having an instance of the achievement class observe a value on the statTracker class and also set up a threshold value at which the achievement instance should be "triggered"(triggering in this case would mean showing a UIAlertView and changing a property on the achievement class.) I'd like to also set these relationships up on instantiation of the achievement class if possible so kind of like this: Achievement *achievement1 = (Achievement *)[NSEntityDescription insertNewObjectForEntityForName:@"Achievement" inManagedObjectContext:[[CoreDataSingleton sharedCoreDataSingleton] managedObjectContext]]; [achievement1 setAchievementName:@"2 time launcher"]; [achievement1 setAchievementDescription:@"So you've decided to come back for more eh? Here are some achievement points to get you going"]; [achievement1 setAchievementPoints:[NSNumber numberWithInt:300]; [achievement1 setObjectToObserve:@"statTrackerInstace" propertyToObserve:@"timesLaunched" valueOfPropertToSatisfyAchievement:2] Anyone out there know how I would set this up? Is there some way I could do this by way of relationships that I'm not seeing? Thanks, Nick

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  • What is the correct JNA mapping for UniChar on Mac OS X?

    - by Trejkaz
    I have a C struct like this: struct HFSUniStr255 { UInt16 length; UniChar unicode[255]; }; I have mapped this in the expected way: public class HFSUniStr255 extends Structure { public UInt16 length; // UInt16 is just an IntegerType with length 2 for convenience. public /*UniChar*/ char[] unicode = new char[255]; //public /*UniChar*/ byte[] unicode = new byte[255*2]; //public /*UniChar*/ UInt16[] unicode = new UInt16[255]; public HFSUniStr255() { } public HFSUniStr255(Pointer pointer) { super(pointer); } } If I use this version, I get every second character of the string into my char[] ("aits D" for "Macintosh HD".) I am assuming that this is something to do with being on a 64-bit platform and JNA mapping the value to a 32-bit wchar_t but then chopping off the high 16 bits on each wchar_t on copying them back. If I use the byte[] version, I get data which decodes correctly using the UTF-16LE charset. If I use the UInt16[] version, I get the right code point for each character but it is then inconvenient to convert them back into a string. Is there some way I can define my type as char[], and yet have it convert correctly?

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  • Should Python 2.6 on OS X deal with multiple easy-install.pth files in $PYTHONPATH?

    - by ahd
    I am running ipython from sage and also am using some packages that aren't in sage (lxml, argparse) which are installed in my home directory. I have therefore ended up with a $PYTHONPATH of $HOME/sage/local/lib/python:$HOME/lib/python Python is reading and processing the first easy-install.pth it finds ($HOME/sage/local/lib/python/site-packages/easy-install.pth) but not the second, so eggs installed in $HOME/lib/python aren't added to the path. On reading the off-the-shelf site.py, I cannot for the life of me see why it's doing this. Can someone enlighten me? Or advise how to nudge Python into reading both easy-install.pth files? Consolidating both into one .pth file is a viable workaround for now, so this question is mostly for curiosity value.

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  • CSS renders Input in firefox mac vs firefox PC. can i detect os via javascript? or maybe a CSS hack

    - by adardesign
    I have a input[type="text"] the that has padding applied to it behaves differently in firefox PC then on a mac. Any hacks that can target firefox PC? These styles are what its seen on firefox PC firebug .searchContainer input { border-color:#7C7C7C #C3C3C3 #DDDDDD; border-style:solid; border-width:1px; color:#555555; float:left; height:12px; padding:3px; } These styles are what its seen on firefox PC firebug .searchContainer input { border-color:#7C7C7C #C3C3C3 #DDDDDD; border-style:solid; border-width:1px; color:#555555; float:left; height:12px; padding:3px; } No other styles are applied to these inputs. Here is a snapshot of FF PC http://tinyurl.com/2wdxmq5 Here is a snapshot of FF mac http://tinyurl.com/2u7f2nl any suggestions?

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  • How can I implement a volume meter for a song currently playing? (iPhone OS 3.1.3)

    - by Adam
    Hi i'm very new to core audio and I just would like some help in coding up a little volume meter for whatever's being outputted through headphones or built-in speaker. Like a dB meter. I have the following code, and have been trying to go through the apple source project "SpeakHere", but it's a nightmare trying to go through all that, without knowing how it works first... Could anyone shed some light? Here's the code I have so far... (void)displayWaveForm { while (musicIsPlaying == YES { NSLog(@"%f",sizeof(AudioQueueLevelMeterState)); } } (IBAction)playMusic { if (musicIsPlaying == NO) { NSURL *url = [NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/track7.wav",[[NSBundle mainBundle] resourcePath]]]; NSError *error; music = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error]; music.numberOfLoops = -1; music.volume = 0.5; [music play]; musicIsPlaying = YES; [self displayWaveForm]; } else { [music pause]; musicIsPlaying = NO; } }

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  • iPhone OS: Why is my managedModelObject not complying with Key Value Coding?

    - by nickthedude
    Ok so I'm trying to build this stat tracker for my app and I have built a data model object called statTracker that keeps track of all the stuff I want it to. I can set and retrieve values using the selectors, but if I try and use KVC (ie setValue: forKey: ) everything goes bad and says my StatTracker class is not KVC compliant: valueForUndefinedKey:]: the entity StatTracker is not key value coding-compliant for the key "timesLauched".' 2010-05-18 15:55:08.573 here's the code that is triggering it: NSArray *statTrackerArray = [[NSArray alloc] init]; statTrackerArray = [[CoreDataSingleton sharedCoreDataSingleton] getStatTracker]; NSNumber *number1 = [[NSNumber alloc] init]; number1 = [NSNumber numberWithInt:(1 + [[(StatTracker *)[statTrackerArray objectAtIndex:0] valueForKey:@"timesLauched"] intValue])]; [(StatTracker *)[statTrackerArray objectAtIndex:0] setValue:number1 forKey:@"timesLaunched" ]; NSError *error; if (![[[CoreDataSingleton sharedCoreDataSingleton] managedObjectContext] save:&error]) { NSLog(@"error writing to db"); } Not sure if this is enough code for you folks let me know what you need if you do need more. This would be so sweet if I could use KVC because I could then abstract all this stat tracking stuff into a single method call with a string argument for the value in question. At least that is what I hope to accomplish here. I'm actually now understanding the power of KVC but now I'm just trying to figure out how to make it work. Thanks! Nick

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  • How do I enable spell checking within an NSTextField on Mac OS X?

    - by Luke
    I have an NSTextField that I would like to enable "as-you-type" spell checking. When I load my application I can do this from the Menu Bar Edit Spelling and Grammar Check Spelling While Typing. I would like this option to be enabled by default. Within IB I can enable this for a NSTextView but I would like to use NSTextField for this part of the UI. Thank you.

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  • How can I create an executable to run on a certain processor architecture (instead of certain OS)?

    - by CrazyJugglerDrummer
    So I take my C++ program in Visual studio, compile, and it'll spit out a nice little EXE file. But EXEs will only run on windows, and I hear a lot about how C/C++ compiles into assembly language, which is runs directly on a processor. The EXE runs with the help of windows, or I could have a program that makes an executable that runs on a mac. But aren't I compiling C++ code into assembly language, which is processor specific? My Insights: I'm guessing I'm probably not. I know there's an Intel C++ compiler, so would it make processor-specific assembly code? EXEs run on windows, so they advantage of tons of things already set up, from graphics packages to the massive .NET framework. A processor-specific executable would be literally starting from scratch, with just the instruction set of the processor. Would this executable be a file-type? We could be running windows and open it, but then would control switch to processor only? I assume this executable would be something like an operating system, in that it would have to be run before anything else was booted up, and have only the processor instruction set to "use".

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  • Using Ruby/Python code in an iPhone OS app?

    - by igul222
    My app needs to use a library which is only available for Python and Ruby. From my understanding, Apple allows Ruby to run on iPhone as long as users can't execute arbitrary code (Rhomobile uses Ruby). How can I bundle Ruby/Python with my app, call a function from my Obj-C code, and get the result (a string) back in C or Obj-C format?

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  • Mac OS X: How to change word separator characters?

    - by avetis.kazarian
    Depending on your system, the word separator characters change the way you can select/delete a word (e.g. by double clicking on it or using a key combination with your keyboard). The fact is that I hate the default behavior of OSX. For example: Take the following line of code: obj.attr1.innerAttr. If my cursor is at the end of the line and I press alt + backspace, it will delete everything and not just innerAttr. I only found some apps (like iTerm) which let you change the word separator characters. Is there a way to change it for the whole system?

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  • Using a named pipe to simulate a serial port on a VMware virtual machine (linux host and client)

    - by Dave M
    Trying to write a python program to create a simulated data stream and feed it, through a named pipe, to a VMware virtual machine. The host is running Ubuntu 11.10 and VMware player 5.0.0. The Vm is running Ubuntu netbook 10.04. I am able to get the pipe working on the local machine but I am not able to get the pipe to pass data through the virtual serial port to the programs running on the virtual machine. #!/usr/bin/python import os # # Create a named pipe that will be used as the serial port on a VMware virtual machine SerialPipe = '/tmp/gpsd2NMEA' try: os.unlink(SerialPipe) except: pass os.mkfifo(SerialPipe) # # Open the named pipe NMEApipe = os.open(SerialPipe, os.O_RDWR|os.O_NONBLOCK) # # Write a string to the named pipe NMEAtime = "235959" os.write(NMEApipe, str( '%s\n' % NMEAtime )) Test to see if the python program is working on the host machine (displays 235959 if data is passing through the pipe) $ cat /tmp/gpsd2NMEA 235959 Serial port as defined in the VMware .vmx file: serial0.present = "TRUE" serial0.startConnected = "TRUE" serial0.fileType = "pipe" serial0.fileName = "/tmp/gpsd2NMEA" serial0.pipe.endPoint = "client" serial0.autodetect = "FALSE" serial0.tryNoRxLoss = "TRUE" serial0.yieldOnMsrRead = "TRUE" Test to see if the serial port in the VM is receiving data $ cat /dev/ttyS0 or $ minicom -D /dev/ttyS0 or $ stty -F /dev/ttyS0 cs8 -parenb -cstopb 115200 $ echo < /dev/ttyS0 None of these display any data from the python program.

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  • How do you retrieve the array adapter currently set for a spinner? Android OS, Droid

    - by Sean
    Looking to create a menu toggle that switches between two possible arrays for a spinner. For example, if the spinner is set to show array A, then when I press this menu button, I want the spinner to be set to array B. If I press it again, I want it to be set back to array A. I can handle the if/then statements and all, but how do I call the spinner's array adapter? I know how to call its value using getSelectedItemPosition(); but is there a similar method for retrieving WHICH array it is currently set to?

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  • How can I set icon for Mac OS X Bundle?

    - by Yakov
    Hi! I have try to set icon for my App in the xCode. In the info.plist I wrote: <key>CFBundleIconFile</key> <string>icon</string> icon is icon.icns file 57X57 in the resources. But finally bundle does not contain an icon. When I press about my app Item in the menu bar an about window appears with my icon. What's wrong? Please help. Thanx

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  • Why execution of a portion of code loaded from external file is not halted by the OS?

    - by menjaraz
    I've harnessed a project released on internet a long time ago. Here comes the details, all irrelevant things being stripped off for sake of concision and clarity. A binary file whose content is descibed below HEX DUMP: 55 89 E5 83 EC 08 C7 45 FC 00 00 00 00 8B 45 FC 3B 45 10 72 02 EB 19 8B 45 FC 8B 55 0C 01 C2 8B 45 FC 03 45 08 8A 00 88 02 8D 45 FC FF 00 EB DD C6 45 FA 00 83 7D 10 01 76 6C 80 7D FA 00 74 02 EB 64 C6 45 FA 01 C7 45 FC 00 00 00 00 8B 45 10 48 39 45 FC 72 02 EB E2 8B 45 FC 8B 4D 0C 01 C1 8B 45 FC 03 45 0C 8D 50 01 8A 01 3A 02 73 30 8B 45 FC 03 45 0C 8A 00 88 45 FB 8B 45 FC 8B 55 0C 01 C2 8B 45 FC 03 45 0C 40 8A 00 88 02 8B 45 FC 03 45 0C 8D 50 01 8A 45 FB 88 02 C6 45 FA 00 8D 45 FC FF 00 EB A7 C9 C2 0C 00 90 90 90 90 90 90 is loaded into memory and executed using the following method snippet var MySrcArray, MyDestArray: array [1 .. 15] of Byte; // ... MyBuffer: Pointer; TheProc: procedure; SortIt: procedure(ASrc, ADest: Pointer; ASize: LongWord); stdcall; begin // Initialization of MySrcArray with random Bytes and display here ... // Instructions of loading of the binary file into MyBuffer using merely **GetMem** here ... @SortIt := MyBuffer; try SortIt(@MySrcArray, @MyDestArray, 15); // Display of MyDestArray (The outcome of the processing !) except // Invalid code error handling end; // Cleaning code here ... end; works like a charm on my box. My Question: How comes it works without using VirtualAlloc and/or VirtualProtect?

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  • How can I dismiss keyboard in iPhone OS 3.2 with text field in popover?

    - by Tom H
    I have several text fields in a custom uiviewcontroller subclass, which is displayed within a popover. The popover is displayed form a bar button. I want the keyboard to go down when the popover is dismissed (either by the user tapping the bar button again, or tapping outside the popover. From the view controller that displays the popover, when the popover is dismissed, in either of the 2 fashions, I call [optionsController dismissFirstResponder]; Optionscontroller is the uiviewcontroller subclass in the popover. Dismissfirstresponder is a method I defined: -(void)dsimissFirstResponder { [nameField resignFirstResponder]; [descriptionField resignFirstResponder]; [helpField resignFirstResponder]; } Those are three IBoutlets which I connected in the xib to the text fields. That doesn't work. Any help with this would be greatly appreciated.

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  • Can you bundle a JavaFX jar as an OS X application?

    - by Ianprime0509
    I'm looking for a way to bundle JavaFX applications similarly to the way I can bundle Java applications using Jar Bundler? I really would like to have a custom icon for my program(and the ability to pin it to the Dock). Is there a way to do this now, or do I have to wait for JavaFX to mature in the Java market?

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  • Anyone realize success using Apple Mac OS 10.6 and Parallels 5 for a Visual Studio Dev machine?

    - by Buffalo
    Greetings my wonderful StackOverflow family :) I grew up using Windows and switched to OSX as a Computer Science major in College. I've recently started my first real software developer job, and have a ThinkPad and Windows XP for developing ASP.NET / MS SQL applications (Visual Studio 2008). Question: Basically, I am wondering if any developers out there have had real success creating ASP.NET applications on a Mac using a VM? I've been fighting with Parallels 5 all week and finally have Windows 7 and VS 2008 running but my hot-keys are all screwed up. Is it worth the work to keep beating this thing into submission? Should I give up? Should I give Mono a try instead? Thanks Folks, I can't wait to see what you all think!

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  • Why can't I install psycopg2? (Python 2.6.4, PostgreSQL 8.4, OS X 10.6)

    - by cojadate
    After running python setup.py install I get the following: Warning: Unable to find 'pg_config' filebuilding 'psycopg2._psycopg' extension gcc-4.0 -arch ppc -arch i386 -fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -O3 - DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.2.1 (dt dec ext pq3)" -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -DHAVE_PQPROTOCOL3=1 -I/Library/Frameworks/Python.framework/Versions/2.6/include/python2.6 -I. -c psycopg/psycopgmodule.c -o build/temp.macosx-10.3-fat-2.6/psycopg/psycopgmodule.o unable to execute gcc-4.0: No such file or directory error: command 'gcc-4.0' failed with exit status 1 There's probably something screamingly obvious there to anyone who knows the first thing about back-end web programming, but unfortunately it's all gobbledegook to me. The psycopg2 documentation was not helpful.

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