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• What kind of good approaches use c++ programmers for storing error messages?

  - by Narek

  Say I have a huge code and have different kinds of error messages. For that I want to have a separate place where I store error codes and error messages. For example, for an error that occured because the program could not open a file I stroe: F001 "Can not open a file." "The same error message in another language" "The same error message in third language" What is the best way of storing different kind of error messages and codes in a file for c++ programmer in order to use that in a programme fast and easily? FYI I am working with Qt lib.

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• Summary count for Python logging

  - by Craig McQueen

  At the end of my Python program, I'd like to be able to get a summary of the number of items logged through the standard logging module. I'd specifically like to be able to get a count for each specified name (and possibly its children). E.g. if I have: input_logger = getLogger('input') input_logger.debug("got input1") input_logger.debug("got input2") input_logger.debug("got input3") network_input_logger = getLogger('input.network') network_input_logger.debug("got network input1") network_input_logger.debug("got network input2") getLogger('output') output_logger.debug("sent output1") Then at the end I'd like to get a summary such as: input: 5 input.network: 2 output: 1 Perhaps by calling a getcount() method for a logger or a handler. What would be a good way to achieve this? I imagine it would involve a sub-class of one of the logging classes, but I'm not sure which one would be best.

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• Fast exchange of data between unmanaged code and managed code

  - by vizcaynot

  Hello: Without using p/invoke, from a C++/CLI I have succeeded in integrating various methods of a DLL library from a third party built in C. One of these methods retrieves information from a database and stores it in different structures. The C++/CLI program I wrote reads those structures and stores them in a List<, which is then returned to the corresponding reading and use of an application programmed completely in C#. I understand that the double handling of data (first, filling in several structures and then, filling all of these structures into a list<) may generate an unnecessary overload, at which point I wish C++/CLI had the keyword "yield". Depending on the above scenario, do you have recommendations to avoid or reduce this overload? Thanks.

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• The emulator isn't showing the XML contents

  - by Roni Copul

  I have been reading Google's android tutorial (link added in the first comment) and I got a problem... In the tutorial they explain the XML elements (EditText and Button) and in the end they say how to tun the program to see the button + the text field. The problem is, that the emulator doesn't show them.. just a black screen. I even tried adding this line to the onCreate function - System.out.println("Hello World!"); but still the emulator is showing only black screen.. Here's the .java main file - http://pastebin.com/G5J9YjNe And the XML files (I mentioned what code is what file) - http://pastebin.com/VnRwAfMW What should I do? Thanks a lot for everyone who will help!

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• Access to a single pixel in C#

  - by Malki

  Hello, I'm working on a school project right now. It's meant to be a 3D editing software, (like a very minimized version of Maya). I have to write it in C#, using the 'Windows Application Project'. I intend to implement all the 3D stuff myself, from projections to shading. My question is, how can I get direct access to a single pixel in the C# windows application? I know I'm going to have a main view port in the window. But I haven't decided yet how it will be made. Is there a built in object that I can use, that will let me define the boundaries of the view port, and then paint each pixel individually? (I'm just shooting in the dark here, I don't know much about C#. I mostly program in C) Thanks, Malki.

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• How to load an image in matlab from java

  - by Ian

  Basically I am trying to create a little program that will allow me to make calls in matlab from a jave GUI It's mainly going to be used for image manipulation and deblurring but I am struggling to find a way that will effectively give me full matlab control from the java end I am hoping to have it work like so: { //create matlab execution call String loadImage = " image1 = imread ('imageOnComputer.jpg'); "; //send instruction to matlab and save the path to it so java can //use the newly created variable resultingVariablePath = java.sendInstructionToMatlab(loadImage); //display on the screen java.displayImage(resultingVariablePath); } Basically I am just trying to find out if there is a plugin for matlab (or some java package) that will grant you (pretty much) full control over matlab.

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• XML fragment with multiple roots: suppressing VS error

  - by Laurent

  In Visual Studio, I have an XML file (with .xml extension) which contains an XML fragment that I use in my program: <tag1> data ... </tag1> <tag2> data ... </tag2> Visual Studio shows me an error in the error list: "XML document cannot contain multiple root level elements". But this is not a complete document, just a fragment that will be reused. I want to keep my 2 roots in my fragment. How can I get rid of the error message? Thanks

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• How can I use Three20 to create a dynamic TTThumbsViewController that feeds from a website directory?

  - by Cory Robbins

  Hello, I'm pretty new to the iPhone developing scene, and I am designing an app for a high school band program. Part of the app needs to be an image gallery that retrieves photos from a directory on the band's website and lists them in the thumbnail view. I can't figure out how to create a thumsview that isn't directly linked to specific pictures. I currently have this setup to work with a UIWebView that points to a PHP photo album designed to look like the iPhone Photo Album. This method works, but it is not ideal, and the navigation is obviously a bit less than what would be expected. Is Three20 the right tool for this job? If not, what should I be using? Thanks!

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• How do I find the root path of a website from a dll?

  - by Biff MaGriff

  I have a C# website. It references several compiled dlls. My dlls need to access folders on the website. How do I find the root path of the website from the dlls? I've tried System.Environment.CurrentDirectory - "C:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE" Assembly.GetExecutingAssembly().Location - C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files...... I was going to use System.Web.HttpContext.Current.Server.MapPath() but System.Web.HttpContext.Current is null. Thanks!

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• How to get total cpu usage in Linux (c++)

  - by cz-david

  I am trying to get total cpu usage in %. First I should start by saying that "top" will simply not do, as there is a delay between cpu dumps, it requires 2 dumps and several seconds, which hangs my program (I do not want to give it its own thread) next thing what I tried is "ps" which is instant but always gives very high number in total (20+) and when I actually got my cpu to do something it stayed at about 20... Is there any other way that I could get total cpu usage? It does not matter if it is over one second or longer periods of time... Longer periods would be more useful, though.

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• Embed Icons into WPF Application as Resource

  - by rattrick1

  I am trying to embed an icon into my my WPF application so that I can pull it out for use as an icon in the Window 7 JumpList using the following code: newScene.IconResourcePath = System.Reflection.Assembly.GetEntryAssembly().Location; newScene.IconResourceIndex = 0; I've gotten it to work using the following method: http://dennisdel.com/?p=38 However, it doesn't seem like the best approach and it seems like there should be an easier way to embed an icon resource into my application while still leaving the "Icon and Manifest" option checked in the Application properties for my program. I've tried numerous methods including setting the icon build action as a resource and an embedded resource, but every time I open my .exe in a resource editor, the icon does not appear. Any suggestions?

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• How to invoke static method in C#4.0 with dynamic type?

  - by Morgan Cheng

  In C#4.0, we have dynamic type, but how to invoke static method of dynamic type object? Below code will generate exception at run time. class Foo { public static int Sum(int x, int y) { return x + y; } } class Program { static void Main(string[] args) { dynamic d = new Foo(); Console.WriteLine(d.Sum(1, 3)); } } IMHO, dynamic is invented to bridge C# and other programming language. There is some other language (e.g. Java) allows to invoke static method through object instead of type. BTW, The introduction of C#4.0 is not so impressive compared to C#3.0.

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• Help needed in pivoting(SQL SERVER 2005)

  - by Newbie

  I have a table like ID Grps Vals --- ---- ----- 1 1 1 1 1 3 1 1 45 1 2 23 1 2 34 1 2 66 1 3 10 1 3 17 1 3 77 2 1 144 2 1 344 2 1 555 2 2 11 2 2 22 2 2 33 2 3 55 2 3 67 2 3 77 The desired output being ID Record1 Record2 Record3 --- ------- ------- ------- 1 1 23 10 1 3 34 17 1 45 66 77 2 144 11 55 2 344 22 67 2 555 33 77 I have tried(using while loop) but the program is running slow. I have been asked to do so by using SET based approach Can any one please help to solve this.(SQL SERVER 2005)

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• WPF: Reset the positions of scatterviewitems?

  - by sofri

  Hi, I have a scatterview with some items in it which I place with Orientation und Center. Now I want to have the possibility to reset the positions of the scatterviewitems after scaling, rotating and moving them, while the program is running. At the moment I do it this way: private void Reset_ContactTapGesture(object sender, Microsoft.Surface.Presentation.ContactEventArgs e) { item1.Center = new Point(150,150); item1.Orientation = 15; item1.Width = 100; item1.Height = 150; } Is there a better way to do it?

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• Cannot implicitly convert type 'char*' to 'bool'

  - by neeraj

  i was trying to passing pointer value in the function , i really got stuck here I am a beginner , not getting what value should be put this is programme from the reference of the book "Cracking the coding interview " By Gayle Laakmann McDowell, class Program { unsafe void reverse(char *str) { char* end = str; char tmp; if (str) //Cannot implicitly convert type 'char*' to 'bool' { while(*end) //Cannot implicitly convert type 'char*' to 'bool' { ++end; } --end; while(str<end) { tmp = *str; *str+= *end; *end-= tmp; } } } public static void Main(string[] args) { } }

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• C optimization breaks algorithm

  - by Halpo

  I am programming an algorithm that contains 4 nested for loops. The problem is at at each level a pointer is updated. The innermost loop only uses 1 of the pointers. The algorithm does a complicated count. When I include a debugging statement that logs the combination of the indexes and the results of the count I get the correct answer. When the debugging statement is omitted, the count is incorrect. The program is compiled with the -O3 option on gcc. Why would this happen?

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• installing NUMPY for Mac OSX 10.7. (Lion) for use with Python

  - by user1744871

  I Need to use nltk and numpy with Python. I am a newbie to Python and initially used the python 2.7.3 that came with my mac (currently running OSX 10.7.5). I learned that the apple version of python may not be robust so I downloaded the standard version from python.org. I have downloaded the nltk program for Mac OSX 10.7. This seemed to install fine. I am trying to download and install numpy using the instructions from the scipy website. http://www.scipy.org/Installing_SciPy/Mac_OS_X. I cloned numpy from github but when I tried to build it using the following command $ python setup.py build I received the following error MacOS/Python: can't open file 'setup.py': [Errno 2] No such file or directory I also tried to build it using the scons command $ python setupscons.py scons --jobs=2 and received the following error /Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python: can't open file 'setupscons.py': [Errno 2] No such file or directory Can anyone think of a possible workaround?

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• How to flash the JFrame on Windows taskbar when it needs attention?

  - by japflap7stackoverflow

  Hi, i'm a computer science student working on a Yahoo Messenger - like program implemented in Java. My problem is that whenever the JTextArea inside my frame contains new message updates, the user must be prompted even when his/her frame is minimized. Is there a workaround on how to make the JFrame on the taskbar blink when updates are received? In short, i badly need a way to notify the user that the frame has been updated even though it is minimized. Is that possible? Thanks for you help. ^_^

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• How would I go about writing a Linux TTY sniffer?

  - by alienate

  For educational purposes (not that anyone should care the motivations behind such an exercise) I'd like to write a program that can read/write to/from alternate tty/pty's. I've read papers (from the 1990's) but can't employ the implementation they use, on modern UNIXes. I was hoping that someone had researched into this in the past, or at least, read documentation pertaining to it, that they could provide. I also wonder if (considering the fact that Linux doesn't have STREAMs) if this exercise must be done via a loadable kernel module? I have many questions and probably a misunderstanding of some of the fundamental ideologies that allow such objectives to be put in place, could someone help? :)

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• Breaking the loop in Jython

  - by kdev

  Hi everyone, I have a written a loop for and if condition and I want to break to loop completely when if gets satisfied. while count: i=0 for line in read_record: #print str.strip(count[1:28]) #print str.strip(read_record[i]) if string.find(str.strip(read_record[i]),str.strip(count[1:28]))>0: code=str.strip(read_record[i+19])+str.strip(read_record[i+20]) print code[25:] break i=i+1 So here if the if string.find condition gets satisfied I want to go to while loop flow. Please tell me what will be the best place to break and how should I modify the program so that once the if condition is satisfied I am out of the loop and start again with while loop.

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• How to sort the numbers using c#

  - by karthik

  I need some help in code to be able to handle the following logic. The program gets many input in Integers like 10,16,3,17,21,29,6 Logic to be done : scenario : 1 First select the biggest 4 numbers of input which is 16,17,21,29 Now assign the values to A,B,C and D A = smallest in the selected 4 B = biggest in the selected 4 C = second smallest in the selected 4 D = third smallest in the selected 4 Result to be Displayed : A = 16 B = 29 C = 17 D = 21 scenario : 2 If the user gives 3 inputs like 3,6,10 assign only to A,B,C and should ignore D Result to be Displayed : A = 3 B = 10 C = 6

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• Record demo and save as AVI for upload to YouTube?

  - by OverTheRainbow

  Hello I need to record the demo of a program in Windows, and save this into an AVI file so that I can upload it to YouTube. I tried Wink for this, but unless I overlooked it, it saves files as Flash (FLV), which YouTube refused. Is there an open-source alternative? I don't need something hardcore, just a tool that will let me save a demo, and insert a couple of slides where the demo stops to let the user read stuff and click on a button to resume watching. Thank you.

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• How does NetBeans' Splash Screen feature work?

  - by Pam

  New to NetBeans and just noticed that in the File Project Properties Application dialog there is a text field labeled Splash Screen that allows you to specify a path to an image that you would like displayed when your program is launching. I want to customize the way my splash screen works (adding a progress bar, etc.) and would like to code it from the ground up but don't know where to start. What are the best practices for Java/Swing-based splash screens? Thanks for any and all input!

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• Linux Kernel - Adding field to task_struct

  - by Drex

  I'm playing around with the linux kernel and added a struct field to the task_struct in sched.h. I know that can be costly but my struct is very small. I then initialize the new struct in INIT_TASK() and also re-initialize in fork.c copy_process() function so that when the INIT task or any other task creates a new process the process gets the init values. What then happens is when I try to run the kernel I get a SEGFAULT. The gdb error is: Locating the bottom of the address space ... Program received signal SIGSEGV, Segmentation fault. 0x08066ad7 in page_ok (page=) at arch/um/os-Linux/sys-i386/task_size.c:31 31 n = *address; It looks like it fails out in task_size. Is there anything else I need to do to add a field to task_struct?

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• How to distribute iPhone application among 50 specific users?

  - by Miraaj

  Hi all, I am developing an iPhone application which I need to distribute to an organization of about approximately 50 people, no. of users can increase or decrease in future. I checked my iPhone developer account, there I got that I can distribute my application via Adhoc Distribution up to 100 iPhone or iPod touch users. So I think it should be best way to distribute my application to that XYZ organization. On further searching I found that there is also an - iPhone Developer Enterprise Program, which is available to companies with 500 or more employees and a Dun & Bradstreet number. So I want to know - which will be the best way for me according to my requirements ? Also I want to know that say if I choose Adhoc distribution then is there any way for automatic up-gradation in it ie. to install new version of my application on user's iPhone or iPod without deleting the old version. Thanks, Miraaj

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