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• Unable to build mercurial on OSX - Python.h not found

  - by Oscar Reyes

  For what I've read I need Python-Dev, how do I install it on OSX? I think the problem I have, is, my Xcode was not properly installed, and I don't have the paths where I should. This previous question: http://stackoverflow.com/questions/2685887/where-is-gcc-on-osx-i-have-installed-xcode-already Was about I couldn't find gcc, now I can't find Python.h Should I just link my /Developer directory to somewhere else in /usr/ ??? This is my output: $ sudo easy_install mercurial Password: Searching for mercurial Reading http://pypi.python.org/simple/mercurial/ Reading http://www.selenic.com/mercurial Best match: mercurial 1.5.1 Downloading http://mercurial.selenic.com/release/mercurial-1.5.1.tar.gz Processing mercurial-1.5.1.tar.gz Running mercurial-1.5.1/setup.py -q bdist_egg --dist-dir /tmp/easy_install-_7RaTq/mercurial-1.5.1/egg-dist-tmp-l7JP3u mercurial/base85.c:12:20: error: Python.h: No such file or directory ... Thanks in advance.

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• How to set the title as left alignment in the UIButton.

  - by Madan Mohan

  Hi Guys, I need to dispaly the email address from left side of a UIButton, But it is getting in the center. Is there any way to set the alignment to the left side of a UIButton. UIButton* emailBtn = [[UIButton alloc] initWithFrame:CGRectMake(5,30,250,height+15)]; emailBtn.backgroundColor=[UIColor clearColor]; [emailBtn setTitle:obj2.customerEmail forState:UIControlStateNormal]; emailBtn.titleLabel.font = [UIFont systemFontOfSize:12.5]; [emailBtn setTitleColor:[[[UIColor alloc]initWithRed:0.121 green:0.472 blue:0.823 alpha:1]autorelease] forState:UIControlStateNormal]; [emailBtn addTarget:self action:@selector(emailAction:) forControlEvents:UIControlEventTouchUpInside]; [elementView addSubview:emailBtn]; [emailBtn release]; Please help me. Thank You, Madan Mohan.

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• UIButton not firing selector if I draw it using CALayer

  - by Horatiu Paraschiv

  Hi everybody I create this button like this: _myButton = [[UIButton buttonWithType:UIButtonTypeCustom] retain]; DLBadgeLayerDelegate *layerDelegate = [[DLBadgeLayerDelegate alloc] init]; _myButton.frame = CGRectMake(0.0 , 0.0, 100.0, 100.0); [_myButton addTarget:self action:@selector(myButtonTapped:) forControlEvents:UIControlEventTouchUpInside]; _myButton.layer.backgroundColor = [[UIColor redColor] CGColor]; _myButton.center = CGPointMake(10.0, 10.0); [self addSubview:_myButton]; [_myButton release]; The button appears on the screen but if I tap on it nothing happens. If I just create a Rounded rect button instead with no custom drawing on its layer or if I just leave the layer line of code out all works well. Do you have any Idea why do I get this behaviour as I would like to do some custom drawing in the button's layer?

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• How to set image to the UISegmentedControl in iphone?

  - by Warrior

  I am new to iphone development.I have created UISegmentedControl having 2 segments. I want to to display images for each segment instead of title.Here is my code NSArray *itemArray = [NSArray arrayWithObjects: @"segment1", @"segment2", nil]; UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:itemArray]; segmentedControl.frame = CGRectMake(5,100,300,40); segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar; segmentedControl.selectedSegmentIndex = 1; [self.view addSubview:segmentedControl]; [segmentedControl release]; But instead of displaying the title ,segment1 and segment2 it should be replaced with the images i have.Please help me out.Thanks.

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• Open source and salary

  - by darko petreski

  Hi, We are facing a lot of open source software. But someone needs to write that software. How are they payed? Do you know a good article about the open source politics and economy? Sometimes the big companies themselves release open source because they have some benefits. Then they sell support, advices ... My question is what is the real economy about open software? No professional will work for nothing. This software are couple of classes but thousand or may be millions of classes. If you are really a pro you will write software for money, because you have life, wife, kids, taxes, you must earn. Please do not tell me that they are doing this for pleasure or hobby. Regards, Darko Peterski Regards

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• Software to Mind Map Dependencies

  - by Alix Axel

  I'm putting together something I'll soon release as OSS and I wanted to make a map of dependencies to get a clearer idea of the big picture. I ended up making the mind map myself using pen and paper: This is something I wish I could do more often, but mapping bigger projects manually is too troublesome (and virtually impossible due to the size of the sheet) and since I can't find any mind mapping software that fits my needs and allows me to display the map in the visual structure I want I often leave the mind maps in my mind alone, no visual representation whatsoever... Can anyone suggest a good mind mapping software that allows me to do something like the above? I've tried FreeMind and XMind so far but their visual structure is too rigid for what I need.

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• Problem with pre-beta sdk - even after reinstalling SDK 3.2

  - by Anders Brenna

  I'm trying to upload the binary for a new app, but always get this errormessage: "The binary you uploaded was invalid. A pre-release beta version of the SDK was used to build the application." I know several people have asked a similar question, but I've tried all suggestions from the answers there without success. I used the XCode 4.0 beta 3 during development, and I've tried using it to compile for earlier releases (3.0, 3.1.3, 3.2 etc...) I've also tried downgrading to SDK 3.2, as well as removing 4.0 beta 3 and then installing SDK 3.2 as a fresh install. It seems to me that there might be some parameter in the "Edit Project Settings" that is sticking from the use of 4.0 beta 3, but I've tried to identify them without success. My last option seem to be a complete reinstall of both OS and SDK. Is there something else I might try first?

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• Push/Present Modal View Controller

  - by Yakattak

  I have a table in my view controller (let's call it TVC1). I have rows in TVC1 that are used so the user can input some more data in addition to the data on TVC1. So, when someone taps a specific row in TVC1, it will show another view controller (let's call it TVC2). However, when TVC2 is shown, all of the data in TVC1 is cleared. How can I save the data in TVC1? Should I do it through the app delegate? DescriptionInputViewController *descriptionController = [[DescriptionInputViewController alloc] initWithNibName:@"DescriptionInputView" bundle:nil]; [self presentModalViewController:navController animated:YES]; [self.navigationController pushViewController:descriptionController animated:YES]; [descriptionController release];

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• Objective-c string appending causes exception

  - by Dave C

  Hello Everyone, The following code is causing me some problems. The third line causes a program crash... it doesn't happen the first time I step through but somehow later on in the program. If I comment out that third line, the program runs smoothly. NSString *myRequestString = @"text"; int i = 1; myRequestString = [myRequestString stringByAppendingString:[NSString stringWithFormat: @"t=%d", i]]; That code causes this exception: * -[CFString release]: message sent to deallocated instance 0xb4c43fe0 On a side note, can anyone tell me how to concatenate strings in objective-c like any other normal language... I can't believe that there is no concatenation operator. Any and all help is greatly appreciated.

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• How to make it easy for users to install my software? Does the programming language matter?

  - by lala

  I'm a beginner to intermediate programmer and I've learned some java and C#. I want to start thinking about making some simple programs that I can release to the world. Just some basic stuff like calendar software that will probably be free. Users want the install process to be quick and easy. To install a java program, I have to tell them to have java installed. To install a C# program, I have to tell them to have .NET installed. I'm worried this might put off some potential users who just want to double click an exe file, choose a directory and be pretty much done. So, I guess this is an either/or two part question: 1) Is there a programming language that makes it easier to set up an installer without requiring users to have other stuff installed? or: 2) Is there some way to set up an installer that checks the system to see if it has java/.NET/whatever, and then includes java/.Net/whatever in the installation if it's not already there?

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• show all tables in DB2 using the LIST command

  - by Robert

  This is embarrassing, but I can't seem to find a way to list the names of the tables in our DB2 database. Here is what I tried: root@VO11555:~# su - db2inst1 root@VO11555:~# . ~db2inst1/sqllib/db2profile root@VO11555:~# LIST ACTIVE DATABASES We receive this error: SQL1092N "ROOT" does not have the authority to perform the requested command or operation. The DB2 version number follows. root@VO11555:~# db2level DB21085I Instance "db2inst1" uses "64" bits and DB2 code release "SQL09071" with level identifier "08020107". Informational tokens are "DB2 v9.7.0.1", "s091114", "IP23034", and Fix Pack "1". Product is installed at "/opt/db2V9.7".

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• iPhone OpenGL ES freezes for no reason

  - by KJ

  Hi, I'm quite new to iPhone OpenGL ES, and I'm really stuck. I was trying to implement shadow mapping on iPhone, and I allocated two 512*1024*32bit textures for the shadow map and the diffuse map respectively. The problem is that my application started to freeze and reboot the device after I added the shadow map allocation part to the code (so I guess the shadow map allocation is causing all this mess). It happens randomly, but mostly within 10 minutes. (sometimes within a few secs) And it only happens on the real iPhone device, not on the virtual device. I backtracked the problem by removing irrelevant code lines by lines and now my code is really simple, but it's still crashing (I mean, freezing). Could anybody please download my xcode project linked below and see what on earth is wrong? The code is really simple: http://www.tempfiles.net/download/201004/95922/CrashTest.html I would really appreciate if someone can help me. My iPhone is a 3GS and running on the OS version 3.1. Again, run the code and it'll take about 5 mins in average for the device to freeze and reboot. (Don't worry, it does no harm) It'll just display cyan screen before it freezes, but you'll be able to notice when it happens because the device will reboot soon, so please be patient. Just in case you can't reproduce the problem, please let me know. (That could possibly mean it's specifically my device that something's wrong with) Observation: The problem goes away when I change the size of the shadow map to 512*512. (but with the diffuse map still 512*1024) I'm desperate for help, thanks in advance! Just for the people's information who can't download the link, here is the OpenGL code: #import "GLView.h" #import <OpenGLES/ES2/glext.h> #import <QuartzCore/QuartzCore.h> @implementation GLView + (Class)layerClass { return [CAEAGLLayer class]; } - (id)initWithCoder: (NSCoder*)coder { if ((self = [super initWithCoder:coder])) { CAEAGLLayer* layer = (CAEAGLLayer*)self.layer; layer.opaque = YES; layer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithBool: NO], kEAGLDrawablePropertyRetainedBacking, kEAGLColorFormatRGBA8, kEAGLDrawablePropertyColorFormat, nil]; displayLink_ = nil; context_ = [[EAGLContext alloc] initWithAPI: kEAGLRenderingAPIOpenGLES2]; if (!context_ || ![EAGLContext setCurrentContext: context_]) { [self release]; return nil; } glGenFramebuffers(1, &framebuffer_); glBindFramebuffer(GL_FRAMEBUFFER, framebuffer_); glViewport(0, 0, self.bounds.size.width, self.bounds.size.height); glGenRenderbuffers(1, &defaultColorBuffer_); glBindRenderbuffer(GL_RENDERBUFFER, defaultColorBuffer_); [context_ renderbufferStorage: GL_RENDERBUFFER fromDrawable: layer]; glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, defaultColorBuffer_); glGenTextures(1, &shadowColorBuffer_); glActiveTexture(GL_TEXTURE1); glBindTexture(GL_TEXTURE_2D, shadowColorBuffer_); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 512, 1024, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL); glGenTextures(1, &texture_); glActiveTexture(GL_TEXTURE0); glBindTexture(GL_TEXTURE_2D, texture_); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 512, 1024, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL); } return self; } - (void)startAnimation { displayLink_ = [CADisplayLink displayLinkWithTarget: self selector: @selector(drawView:)]; [displayLink_ setFrameInterval: 1]; [displayLink_ addToRunLoop: [NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode]; } - (void)useDefaultBuffers { glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, defaultColorBuffer_); glClearColor(0.0, 0.8, 0.8, 1); glClear(GL_COLOR_BUFFER_BIT); } - (void)useShadowBuffers { glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, shadowColorBuffer_, 0); glClearColor(0, 0, 0, 0); glClear(GL_COLOR_BUFFER_BIT); } - (void)drawView: (id)sender { NSTimeInterval startTime = [NSDate timeIntervalSinceReferenceDate]; [EAGLContext setCurrentContext: context_]; [self useShadowBuffers]; [self useDefaultBuffers]; glBindRenderbuffer(GL_RENDERBUFFER, defaultColorBuffer_); [context_ presentRenderbuffer: GL_RENDERBUFFER]; NSTimeInterval endTime = [NSDate timeIntervalSinceReferenceDate]; NSLog(@"FPS : %.1f", 1 / (endTime - startTime)); } - (void)stopAnimation { [displayLink_ invalidate]; displayLink_ = nil; } - (void)dealloc { if (framebuffer_) glDeleteFramebuffers(1, &framebuffer_); if (defaultColorBuffer_) glDeleteRenderbuffers(1, &defaultColorBuffer_); if (shadowColorBuffer_) glDeleteTextures(1, &shadowColorBuffer_); glDeleteTextures(1, &texture_); if ([EAGLContext currentContext] == context_) [EAGLContext setCurrentContext: nil]; [context_ release]; context_ = nil; [super dealloc]; } @end

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• Why my VPN doesn't work anymore?

  - by xx77aBs

  I have openvpn server running on debian lenny. There is only one client - and it is running Windows 7 64-bit. This has worked for few months without any problems. And now, let's say for the last 7 days, it doesn't work at all. I connect successfully from client to the server, but I can't access anything through VPN. I have set it up so that all internet traffic is routed through VPN, and now when I connect with the client, the client can't do anything on the net (open any webpage, ping google, anything ...). Can you help me to figure out what's wrong ? I don't know where to start. I've also tried to connect to another openvpn server (I've installed and configured openvpn on another server, and when I try to connect to it result is the same). So I think there's something wrong with client ... Here is my connection log: Wed Apr 04 21:35:59 2012 OpenVPN 2.3-alpha1 Win32-MSVC++ [SSL (OpenSSL)] [LZO2] [PF_INET6] [IPv6 payload 20110522-1 (2.2.0)] built on Feb 21 2012 Enter Management Password: Wed Apr 04 21:35:59 2012 MANAGEMENT: TCP Socket listening on [AF_INET]127.0.0.10:25340 Wed Apr 04 21:35:59 2012 Need hold release from management interface, waiting... Wed Apr 04 21:36:00 2012 MANAGEMENT: Client connected from [AF_INET]127.0.0.10:25340 Wed Apr 04 21:36:00 2012 MANAGEMENT: CMD 'state on' Wed Apr 04 21:36:00 2012 MANAGEMENT: CMD 'log all on' Wed Apr 04 21:36:00 2012 MANAGEMENT: CMD 'hold off' Wed Apr 04 21:36:00 2012 MANAGEMENT: CMD 'hold release' Wed Apr 04 21:36:00 2012 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info. Wed Apr 04 21:36:00 2012 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables Wed Apr 04 21:36:00 2012 Socket Buffers: R=[8192->8192] S=[8192->8192] Wed Apr 04 21:36:00 2012 MANAGEMENT: >STATE:1333568160,RESOLVE,,, Wed Apr 04 21:36:00 2012 UDPv4 link local: [undef] Wed Apr 04 21:36:00 2012 UDPv4 link remote: [AF_INET]11.22.33.44:1234 Wed Apr 04 21:36:00 2012 MANAGEMENT: >STATE:1333568160,WAIT,,, Wed Apr 04 21:36:00 2012 MANAGEMENT: >STATE:1333568160,AUTH,,, Wed Apr 04 21:36:00 2012 TLS: Initial packet from [AF_INET]11.22.33.44:1234, sid=ee329574 f15e9e04 Wed Apr 04 21:36:00 2012 VERIFY OK: depth=1, C=US, ST=CA, L=SanFrancisco, O=Fort-Funston, CN=Fort-Funston CA, [email protected] Wed Apr 04 21:36:00 2012 VERIFY OK: depth=0, C=US, ST=CA, L=SanFrancisco, O=Fort-Funston, CN=server_key, [email protected] Wed Apr 04 21:36:01 2012 Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key Wed Apr 04 21:36:01 2012 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication Wed Apr 04 21:36:01 2012 Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key Wed Apr 04 21:36:01 2012 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication Wed Apr 04 21:36:01 2012 Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 1024 bit RSA Wed Apr 04 21:36:01 2012 [server_key] Peer Connection Initiated with [AF_INET]11.22.33.44:1234 Wed Apr 04 21:36:02 2012 MANAGEMENT: >STATE:1333568162,GET_CONFIG,,, Wed Apr 04 21:36:03 2012 SENT CONTROL [server_key]: 'PUSH_REQUEST' (status=1) Wed Apr 04 21:36:03 2012 PUSH: Received control message: 'PUSH_REPLY,redirect-gateway def1,route 172.16.100.1,topology net30,ping 10,ping-restart 120,ifconfig 172.16.100.6 172.16.100.5' Wed Apr 04 21:36:03 2012 OPTIONS IMPORT: timers and/or timeouts modified Wed Apr 04 21:36:03 2012 OPTIONS IMPORT: --ifconfig/up options modified Wed Apr 04 21:36:03 2012 OPTIONS IMPORT: route options modified Wed Apr 04 21:36:03 2012 ROUTE_GATEWAY 192.168.1.1/255.255.255.0 I=15 HWADDR=00:1f:1f:3f:61:55 Wed Apr 04 21:36:03 2012 do_ifconfig, tt->ipv6=0, tt->did_ifconfig_ipv6_setup=0 Wed Apr 04 21:36:03 2012 MANAGEMENT: >STATE:1333568163,ASSIGN_IP,,172.16.100.6, Wed Apr 04 21:36:03 2012 open_tun, tt->ipv6=0 Wed Apr 04 21:36:03 2012 TAP-WIN32 device [VPN] opened: \\.\Global\{E28FD52B-F6C3-4094-A36A-30CB02FAC7E8}.tap Wed Apr 04 21:36:03 2012 TAP-Win32 Driver Version 9.9 Wed Apr 04 21:36:03 2012 Notified TAP-Win32 driver to set a DHCP IP/netmask of 172.16.100.6/255.255.255.252 on interface {E28FD52B-F6C3-4094-A36A-30CB02FAC7E8} [DHCP-serv: 172.16.100.5, lease-time: 31536000] Wed Apr 04 21:36:03 2012 Successful ARP Flush on interface [31] {E28FD52B-F6C3-4094-A36A-30CB02FAC7E8} Wed Apr 04 21:36:08 2012 TEST ROUTES: 2/2 succeeded len=1 ret=1 a=0 u/d=up Wed Apr 04 21:36:08 2012 C:\Windows\system32\route.exe ADD 11.22.33.44 MASK 255.255.255.255 192.168.1.1 Wed Apr 04 21:36:08 2012 ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=25 and dwForwardType=4 Wed Apr 04 21:36:08 2012 Route addition via IPAPI succeeded [adaptive] Wed Apr 04 21:36:08 2012 C:\Windows\system32\route.exe ADD 0.0.0.0 MASK 128.0.0.0 172.16.100.5 Wed Apr 04 21:36:08 2012 ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=30 and dwForwardType=4 Wed Apr 04 21:36:08 2012 Route addition via IPAPI succeeded [adaptive] Wed Apr 04 21:36:08 2012 C:\Windows\system32\route.exe ADD 128.0.0.0 MASK 128.0.0.0 172.16.100.5 Wed Apr 04 21:36:08 2012 ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=30 and dwForwardType=4 Wed Apr 04 21:36:08 2012 Route addition via IPAPI succeeded [adaptive] Wed Apr 04 21:36:08 2012 MANAGEMENT: >STATE:1333568168,ADD_ROUTES,,, Wed Apr 04 21:36:08 2012 C:\Windows\system32\route.exe ADD 172.16.100.1 MASK 255.255.255.255 172.16.100.5 Wed Apr 04 21:36:08 2012 ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=30 and dwForwardType=4 Wed Apr 04 21:36:08 2012 Route addition via IPAPI succeeded [adaptive] Wed Apr 04 21:36:08 2012 Initialization Sequence Completed Wed Apr 04 21:36:08 2012 MANAGEMENT: >STATE:1333568168,CONNECTED,SUCCESS,172.16.100.6,11.22.33.44 Client's route table after connection with OpenVPN: IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.41 281 0.0.0.0 128.0.0.0 172.16.100.1 172.16.100.6 31 94.23.53.45 255.255.255.255 192.168.1.1 192.168.1.41 25 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 128.0.0.0 128.0.0.0 172.16.100.1 172.16.100.6 31 172.16.100.4 255.255.255.252 On-link 172.16.100.6 286 172.16.100.6 255.255.255.255 On-link 172.16.100.6 286 172.16.100.7 255.255.255.255 On-link 172.16.100.6 286 192.168.1.0 255.255.255.0 On-link 192.168.1.41 281 192.168.1.41 255.255.255.255 On-link 192.168.1.41 281 192.168.1.255 255.255.255.255 On-link 192.168.1.41 281 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 192.168.1.41 281 224.0.0.0 240.0.0.0 On-link 172.16.100.6 286 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 192.168.1.41 281 255.255.255.255 255.255.255.255 On-link 172.16.100.6 286 =========================================================================== Persistent Routes: Network Address Netmask Gateway Address Metric 0.0.0.0 0.0.0.0 192.168.1.1 Default =========================================================================== IPv6 Route Table =========================================================================== Active Routes: If Metric Network Destination Gateway 13 58 ::/0 On-link 1 306 ::1/128 On-link 13 58 2001::/32 On-link 13 306 2001:0:5ef5:79fd:3cc3:6b9:ac7c:14db/128 On-link 15 281 fe80::/64 On-link 31 286 fe80::/64 On-link 13 306 fe80::/64 On-link 13 306 fe80::3cc3:6b9:ac7c:14db/128 On-link 31 286 fe80::7d72:9515:7213:35e3/128 On-link 15 281 fe80::9cec:ce3f:89de:a123/128 On-link 1 306 ff00::/8 On-link 13 306 ff00::/8 On-link 15 281 ff00::/8 On-link 31 286 ff00::/8 On-link =========================================================================== Persistent Routes: None

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• Multi-part question about multi-threading, locks and multi-core processors (multi ^ 3)

  - by MusiGenesis

  I have a program with two methods. The first method takes two arrays as parameters, and performs an operation in which values from one array are conditionally written into the other, like so: void Blend(int[] dest, int[] src, int offset) { for (int i = 0; i < src.Length; i++) { int rdr = dest[i + offset]; dest[i + offset] = src[i] > rdr? src[i] : rdr; } } The second method creates two separate sets of int arrays and iterates through them such that each array of one set is Blended with each array from the other set, like so: void CrossBlend() { int[][] set1 = new int[150][75000]; // we'll pretend this actually compiles int[][] set2 = new int[25][10000]; // we'll pretend this actually compiles for (int i1 = 0; i1 < set1.Length; i1++) { for (int i2 = 0; i2 < set2.Length; i2++) { Blend(set1[i1], set2[i2], 0); // or any offset, doesn't matter } } } First question: Since this apporoach is an obvious candidate for parallelization, is it intrinsically thread-safe? It seems like no, since I can conceive a scenario (unlikely, I think) where one thread's changes are lost because a different threads ~simultaneous operation. If no, would this: void Blend(int[] dest, int[] src, int offset) { lock (dest) { for (int i = 0; i < src.Length; i++) { int rdr = dest[i + offset]; dest[i + offset] = src[i] > rdr? src[i] : rdr; } } } be an effective fix? Second question: If so, what would be the likely performance cost of using locks like this? I assume that with something like this, if a thread attempts to lock a destination array that is currently locked by another thread, the first thread would block until the lock was released instead of continuing to process something. Also, how much time does it actually take to acquire a lock? Nanosecond scale, or worse than that? Would this be a major issue in something like this? Third question: How would I best approach this problem in a multi-threaded way that would take advantage of multi-core processors (and this is based on the potentially wrong assumption that a multi-threaded solution would not speed up this operation on a single core processor)? I'm guessing that I would want to have one thread running per core, but I don't know if that's true.

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• ::LookupAccountSid API Extremely Slow When Targeting x64 Platform (Windows 7)

  - by Chris

  During our application startup, we are making a call to ::LookupAccountSid(). When I build targeting the x86 architecture, this call is nearly instantaneous. However, when I target x64 (debug or release), the call generally takes over 40s to complete. Since this is occurring during application startup, the result is fairly unpleasant as it will appear to the user that the application is not launching. I am running Windows 7 Professional 64-bit on a Dell Studio XPS 16 (Intel Core i7 Q 720). Our application is a native Windows application written in C++. My compiler options (CCOPTS) and linker options (LINKOPTS) are as follows: CCOPTS = "/nologo /Gz /W3 /EHs /c /DWIN32 /D_MBCS /Ob1 /vmg /vmv /Zi /MD /DNDEBUG /DDV_BUILD_DLL /DIV_BUILD_DLL /DDVASSERT_EXCEPTION /Zc:wchar_t-" LINKOPTS = "/manifest:no /nologo /machine:X64 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /DEBUG /subsystem:windows /DLL" Any help would be greatly appreciated :D

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• Problems with Date, preparedStatement, JDBC and PostgreSQL

  - by GuidoMB

  I Have to get a movie from a PostgreSQL database that matches a given title and release date. title is a character(75) and releaseDate is a date. I Have this code: String query = "SELECT * FROM \"Movie\" WHERE title = ? AND \"releaseDate\" = ?)"; Connection conn = connectionManager.getConnection(); PreparedStatement stmt = conn.prepareStatement(query); java.sql.Date date = new java.sql.Date(releaseDate.getTime()); stmt.setString(1, title); stmt.setDate(2, date); ResultSet result = stmt.executeQuery(); but it's not working because the releaseDate is not matching when it should. The query SELECT * FROM "Movie" WHERE title = A_MOVIE AND "releaseDate" = A_DATE works perfectly on a command shell using psql

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• Why is Visual Studio 2008 stuck in debug mode when compiling

  - by Mark

  I have a .NET project that for some reason gets stuck in debug mode. I've changed the compile mode from debug to release in the toolbar, but my project ends up in the debug directory anyway. Seems like VS is not updating the SLN file or something. Please help! The reason I am asking about this is because it seems that there are weak references "ENCList" clogging up memory when my program runs, and they seem to be created when .NET apps are compiled in debug (or so says other sources I've found online). -Mark

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• How to load the App.config file?

  - by Amokrane

  Hi, I'm parsing the App.config file of a project. This config file has been loaded from a caller project. Inside the called project, I have something like: XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load("app.config"); // Some parsing... Unfortunately the app.config file is not correctly located. Apparently the Load method is browsing the ~/bin/Release directory of the caller project, but the app.config file is located in the ~ directory. Is there any way I can load this App.config file correctly? Thanks

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• Build Procedure

  - by sarah xia

  Hi all, My company is putting auto build and deploy procedure in place. What we are doing now is checking out source code from svn and specify the source folder in Ant script. Is it the right way? Can we omit the exporting process and build directly from SVN? Another question is to do with versioning. At the moment, we are creating a tag whenever there is a release and then use the tag number to name the build product, which will be shipped to a client's site. I've done search on the Internet and here and it seems the correct way to name a product is like this: x.y.z.revision. However, our company is quite small and the client always want quick changes and releases. I would like to know what the drawbacks of only using tag number to name the product? And what would be the best approach for small companies like us? Thankyou, Sarah

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• iphone - testing if an object exists

  - by Mike

  I have several apps in my app that can become nil at some point and I have methods that in theory are used to put these objects to nil. But, if I try to put to nil an object that does not exist, the app will crash. for example... [object1 release]; object1 = nil; //... and after that [object removeFromSuperview]; // this will crash Then I thought, why not testing to see if the object exists before removing... if (object1 != nil) [object removeFromSuperview]; // this will crash too, because object1 cannot be tested for nil because it does not exist How can I check if the object exists before testing if it is nil? something as if (object exists( { if(object != nil)) [object removeFromSuperview) } is this possible?

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• How to add flags to RC.EXE through QMake .pro makefiles

  - by Hernán

  I've the following definition in my .pro file: RC_FILE = app.rc This RC file contains a global include at the top: #include "version_info.h" The version_info.h header is on a common header files directory. Since RC.EXE takes INCLUDE environment variable in consideration, according to MS documentation, my build process batch sets up that accordingly: SET INCLUDE=%PROJECTDIR%\version;%INCLUDE% ... QMAKE project.pro -spec win32-msvc2008 -r CONFIG += release This works perfect as RC seems to read that INCLUDE var so the "version_info.h" file is including on every RC file properly. The problem is when I generate a VS solution (or Import it through the VS Addin). The RC invocation does not contain any /I flag (as I expect) but does not read any INCLUDE variable, even when I've setup through system 'environment variables' dialog in XP. So I'm stuck with this problem, with two alternatives I could not get to work: Make VS RC.exe invocation honour the INCLUDE variable (didn't work either as user or system variable). Force QMAKE to pass /I flag to RC invocation, and get that /I flag imported into the project settings (Resource Compiler properties). Thanks in advance.

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• ~/.irbrc not executed when starting irb or script/console

  - by Patrick Klingemann

  Here's what I've tried: 1. gem install awesome_print 2. echo "require 'ap'" >> ~/.irbrc 3. chmod u+x ~/.irbrc 4. script/console 5. ap { :test => 'value' } Result: NameError: undefined local variable or method `ap' for # Some additional info: Fedora 13 (observed this issues in prior versions of Fedora also) bash --version Produces: GNU bash, version 4.1.2(1)-release (x86_64-redhat-linux-gnu) Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software; you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

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• C++ debugging help for C# programmer

  - by ddm

  I'm embarrassed to post this but it's been awhile since I worked in C++, been with C# for awhile. I'm converting old (not written by me) vs2003 and 05 C++ code to vs 08. In addition to lots of lumps during conversion, I want to add debug logging so I can monitor what is going on when I attach with windbg. I've searched the archives here and ms and I think it's using Debugger.Log(...) but not sure. I also remember years ago launching a debug monitor to catch the logging. So the call to some experts that have a better memory than I. What call(s) can I make (without the DEBUG compile directive - need to watch release code) to catch the logging in wind bag? I followed a couple of debugging links from SO posts but they were dead. Thanx - Old Man.

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• How do I free SQLServerCE's COM instance from the current running process?

  - by David Thornley

  It's been a while since I touched COM so be nice ;) This is under WindowsCE 5.0 with SQLServerCE 2.0. After calling this to load SQLServerCE 2.0 : - IDBInitialize *pIDBInitialize = NULL; CoCreateInstance(CLSID_SQLSERVERCE_2_0, NULL, CLSCTX_INPROC_SERVER, IID_IDBInitialize, (void**)&pIDBInitialize); Module load occurs for SSCE20.dll which obviously loads the SQLServerCE engine into the process space. What I don't understand is if I do this immediately after :- pIDBInitialize->Release(); I don't see a dll module unload, so that SSCE20.dll (and friends) are still loaded into my process. Now I tried CoFreeUnusedLibraries() which I figure forces COM to purge any unused libraries, but it doesn't seem to do the trick. At runtime I want to be able to completely unload the SQLServerCE 2.0 dll from the process to streamline an upgrade to 3.5SP1. I suspect this has something to do with the shared dll model that Microsoft use under WindowsCE... but, I might be wrong :) Thanks in advance, David.

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• Animation on the iPhone - use image sequence or rotation?

  - by user157733

  I am creating a basic animation for my iPhone app. I have a choice to make between 2 different types of animation. I can use this... NSArray *myImages = [NSArray arrayWithObjects: [UIImage imageNamed:@"myImage1.png"], [UIImage imageNamed:@"myImage2.png"], [UIImage imageNamed:@"myImage3.png"], [UIImage imageNamed:@"myImage4.gif"], nil]; UIImageView *myAnimatedView = [UIImageView alloc]; [myAnimatedView initWithFrame:[self bounds]]; myAnimatedView.animationImages = myImages; myAnimatedView.animationDuration = 0.25; [self addSubview:myAnimatedView]; [myAnimatedView release]; or something like this... [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:1.5]; // other animations goes here myImage.transform = CGAffineTransformMakeRotation(M_PI*0.5); // other animations goes here [UIView commitAnimations]; I have quite a few of these parts to animate so I want to choose an option which uses the least amount of memory and runds the quickest. Any advice would be great, thanks

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