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• When to choose C over C++?

  - by aaa

  Hi. I have become a fond of C++ thanks to this website. Before, I programmed exclusively in C/Fortran, thinking that C++ was too slow (not anymore). Is there a reason to write new project purely in C? this is besides obvious things like low-level kernel/system components. What about intermediate things, like communication libraries, for example MPI? Is C still more portable than C++? I have messed with pretty exotic systems, like Cray, but have yet to see non-embedded system without C++. thanks

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• Keeping track of dirty blocks on a block device

  - by mikeY

  I'm looking for a way to keep track of what blocks on a block device are modified after a point in time. How I eventually want to use this for is to keep two 2TB disks in sync, one which only comes online (connected through USB) once a month. Without knowing what blocks have been modified, I have to go through the whole 2TB every time. I'm using a recent GNU/Linux OS and have C and Python experience. I'm hoping to avoid writing kernel level code as I don't have any experience in that area whatsoever. My current theory is that there should be some hooks somewhere where my code can get called when a disk flush is performed. Any ideas?

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• Java EE - newbie question (not related to learning JEE)

  - by UnCon

  I've read lot of articles saying, that Java EE is most popular enterprise solution nowadays. Let's not argue if it is most popular or second most popular or what. The thing is : I see almost all web pages with extension like .html, .php and .aspx. Why there is (almost) none .JSP ? Why so ease to find ASP.NET pages if it is supposed to be less popular? Please I am not programming with Java EE (yet) so don't blame me, if I am completely wrong. The answer with patience would be greatly appreciated!

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• Q on filestream and streamreader unicode

  - by habbo95

  HI all of u,, I have big problem until now no body helped me. firstly I want to open XXX.vmg (this extension come from Nokia PC Suite) file and read it then write it in richtextbox. I wrote the code there is no error and also there is no reault in the richtextbox here is my code FileStream file = new FileStream("c:\\XXX.vmg", FileMode.OpenOrCreate, FileAccess.Read); StreamWriter sw = new StreamWriter(fileW); StreamReader sr = new StreamReader(file); string s1 = sr.ReadToEnd(); string[] words = s1.Split(' '); for (int i=0; i<words.length; i++) richTextBox1.Text +=Envirment.NewLine + words[i]; The output at richtextbox just blank line

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• What is the most efficient way to list all of the files in a directory (including sub-directories)?

  - by prometheus

  I am writing a servlet which will examine a directory on the server (external to the web container), and recursively search for certain files (by certain files, I mean files that are of a certain extension as well as a certain naming convention). Once these files are found, the servlet responds with a long list of all of the found files (including the full path to the files). My problem is that there are so many files and directories that my servlet goes extremely slow. I was wondering if there was a best practice or existing servlet for this type of problem? Would it be more efficient to simply compile the entire list of files and do the filtering via js/jquery on the client side?

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• Cannot customize Solution Explorer project context menu in VS 2010

  - by mikoro

  I'm trying to customize that context menu which comes up when you right click the project in the Solution Explorer. When I goto: Tools - Customize - Commands - Context Menu (radio button) - Project and Solution Context Menus | Project (drop down) I get nothing in the "controls:" list. I can modify other context menus starting with "Project and Solution Context Menus" but none of them is the right one. Any ideas? Currently I have ReSharper, PowerTools and StyleCop installed, but I have installed and uninstalled bunch of other addins (dotTrace, CodeIt.Right, VisualHG, DevExpress, random stuff from Extension Manager).

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• Getting Older PHP Extensions

  - by maSnun

  Hello All, It happens that I need the GD, SQLite and a few more extensions for php 5.1. But I can't find out where to get them. I am using WinBinder to develop some desktop applications for Windows with php. The minimal php 5.1 pack has the winbinder extension only. I need other extensions for enhanced features like image editing or data storage. Can anybody help? I really need this very much. Thanks and Regards, Masnun

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• Known problems with filemtime() on Windows - files getting touched arbitrarily?

  - by Pekka

  Is there a known issue leading to file modification times of cache files on Windows XP SP 3 getting arbitrarily updated, but without any actual change? Is there some service on a standard Windows XP - Backup, Sync, Versioning, Virus scanner - known to touch files? They all have a .txt extension. If there isn't, forget it. Then I'm getting something wrong in my cache routines, and I'll debug my way through. Background: I'm building a simple caching wrapper around a slow web site on a Windows server. I am comparing the filemtime() time stamp to some columns in the data base to determine whether a cached file is stale. I'm having problems using this method because the modification time of the cache files seems to get updated in between operations without me doing anything. THis results in stale files being displayed. I'm the only user on the machine. The operating system is Windows XP, the webserver a XAMPP Apache 2 with PHP 5.2

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• Iphone SDK on Windows (alternative solutions)

  - by Cyclone

  I know there is no official SDK for windows, which is very annoying. Is there any way to develop applications on a windows computer, other than somehow running a mac os in vmware? I know you can do it with Xcode, but that is also only for macs. Google searches have revealed absolutely nothing...... If I cannot use the SDK or Xcode, any way I can just check syntax or something and just make my code in Notepad and save it with the proper extension? I have no idea whether or not I would be able to do that, probably because I have never even tried the SDK and probably never will without buying a mac.

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• Enable GD support in PHP

  - by Don

  Hi, I'm trying to install pixelpost on an Apache server on windows. The installer is failing because: Pixelpost will not run if your PHP installation is not compiled with the GD graphics library. I've added the following line to php.ini extension=php_gd2.dll But I still get the same error message. When I run phpinfo() I don't see any reference to GD, so I guess it really isn't installed. I searched for php_gd2.dll and it's in the ext subfolder of my PHP root dir. I know nothing about PHP, so be gentle with me. Thanks, Don

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• Set Default DateTime Format c#

  - by Matthew Hood

  Is there a way of setting or overriding the default DateTime format for an entire application. I am writing an app in C# .Net MVC 1.0 and use alot of generics and reflection. Would be much simpler if I could override the default DateTime.ToString() format to be "dd-MMM-yyyy". I do not want this format to change when the site is run on a different machine. Edit - Just to clarify I mean specifically calling the ToString, not some other extension function, this is because of the reflection / generated code. Would be easier to just change the ToString output.

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• How to extract a single function from a source file

  - by Adam Matan

  Hi, I'm working on a small academic research about extremely long and complicated functions in the Linux kernel. I'm trying to figure out if there is a good reason to write 600 or 800 lines-long functions. For that purpose, I would like to find a tool that can extract a function from a .c file, so I can run some automated tests on the function. For example, If I have the function cifs_parse_mount_options() within the file connect.c, I'm seeking a solution that would roughly work like: extract /fs/cifs/connect.c cifs_parse_mount_options and return the 523 lines of code(!) of the function, from the opening braces to the closing braces. Of course, any way of manipulating existing software packages like gcc to do that, would be most helpful too. Thanks, Udi EDIT : The answers to Regex to pull out C function prototype declarations? convinced me that matching function declaration by regex is far from trivial.

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• Find files in a folder using Java

  - by Sii

  Hello, I'm new here so be kind to my stupidity :) What I need to do if Search a folder say C:\example I then need to go through each file and check to see if it matches a few start characters so if files start temp****.txt tempONE.txt tempTWO.txt So if the file starts with temp and has an extension .txt I would like to then put that file name into a File file = new File("C:/example/temp***.txt); so I can then read in the file, the loop then needs to move onto the next file to check to see if it meets as above. I hope this makes sense, thanks for taking the time to view this I do apperciate it :)

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• How to generate a PDF of dynamic HTML content?

  - by chris Frisina

  I am trying to be able to allow users to generate content dynamically, and have that information be in a , and then allow that specific to be exportable to a pdf. I have got Joomla up and running (with the appropriate mySQL and ANT) locally with the Web2PDF extension, but how would I get those running on my domain (hosted by Dreamhost). Are there any other approaches you might recommend. The content is generated by JS and JQuery, and formatted with CSS and HTML. Other considerations: Web2PDF generates a PDF on the entire content, (pulling the entire page's HTML, not just the specific <div>.

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• Why doesn't MySQL support millisecond / microsecond precision?

  - by Byron Whitlock

  So I just found the most frustrating bug ever in MySQL. Apparently the TIMESTAMP field, and supporting functions do not support any greater precision than seconds!? So I am using PHP and Doctrine, and I really need those microseconds (I am using the actAs: [Timestampable] property). I found a that I can use a BIGINT field to store the values. But will doctrine add the milliseconds? I think it just assigns NOW() to the field. I am also worried the date manipulation functions (in SQL) sprinkled through the code will break. I also saw something about compiling a UDF extension. This is not an acceptable because I or a future maintainer will upgrade and poof, change gone. Has anyone found a suitable workaround?

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• What do you tell people your profession is? [closed]

  - by user110296

  My technical title is Member of the Technical Staff, and like you most of you, I design/write code for a living. I can never decide what to answer when someone asks what I do for a living? Software Developer? Software Engineer? [Kernel] Programmer? Computer Scientist? These all seem to have various bad connotations. I guess I like Software Engineer the best, but unfortunately this term has been coopted by people who don't actually code. I made the mistake of taking a 'Software Engineering' class, and realized that I definitely don't want to be associated with people who major in this. Probably this is too subjective, so feel free to community wiki it or whatever, but I think it is a valid question and I would like to hear what others have decided on and their reasoning.

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• Type casting Collections using Conversion Operators

  - by Vyas Bharghava

  The below code gives me User-defined conversion must convert to or from enclosing type, while snippet #2 doesn't... It seems that a user-defined conversion routine must convert to or from the class that contains the routine. What are my alternatives? Explicit operator as extension method? Anything else? public static explicit operator ObservableCollection<ViewModel>(ObservableCollection<Model> modelCollection) { var viewModelCollection = new ObservableCollection<ViewModel>(); foreach (var model in modelCollection) { viewModelCollection.Add(new ViewModel() { Model = model }); } return viewModelCollection; } Snippet #2 public static explicit operator ViewModel(Model model) { return new ViewModel() {Model = model}; } Thanks in advance!

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• help with installing clamav for remote apache server vs WAMP localserver

  - by Scarface

  Hey guys, I have never installed an extension before so I am not really sure where to start. I want to do 2 things: install clamav virus scanner http://sourceforge.net/projects/php-clamav/ on my remote server which is a linux apache setup using cpanel as a gui. install clamav on my localserver on my home computer which operates on windows and has WAMP server installed for server-side activity What is the difference between the two installation methods? What is required for each installation? If anyone can point me in the right direction in any way, I would really appreciate it. Even if it is just an article or tutorial on how to get started.

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• Codeigniter Write_file Question

  - by Brad

  I am writing to a txt file to back up certain posts. Here is my simple code $this->path = APPPATH . "post_backups/"; $string = $this->input->post('post'); $post_title = $this->input->post('post_title'); $this->file = $this->path . $post_title."txt"; write_file($this->file, $string); $this->index(); Every thing works fine except this $this->file = $this->path . $post_title."txt"; I am trying to name my file with the title of the post IE: title.txt. What I am getting it s this "titletxt". How should the $post_title . "txt" be written to provide txt as an extension? Thanks

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• Connection to .mdb file fails on windows 2008 core - 32bit

  - by amritad

  Hi, I have an application where I am doing connection with .mdb file. Here are the steps we are following : Creating object for database utils inteface Calling the connect() function, to get connected to the database whose extension is .mdb file Above flow is working correct on all windows platform but not on windows server 2008 CORE 32-bit. I also checked whether the ODBC drivers are installed or not, by opening regedit. I found that all drivers specially Microsoft access driver (*.mdb) is installed. ANd I think it is by default get installed while installing OS. Is anyone aware of any thing about ODBC drivers and connectivity to the database (like .mdb) on windows 2008 CORE ( which runs only on command line and no interface)

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• Depmod - unresolved symbols in rt73 module

  - by Xolstice

  I'm trying to install a linux driver for my wireless network card (D-Link DWL-G510) on my Red Hat Linux 7.1 machine with a 2.4.37.9 kernel. I downloaded the serial monkey driver from the sourceforge site and was able to successfully compile the module. However, whenever I do a "make install", the make script executes a "depmod -a" command which then complains with the message: "Unresolved symbols in /lib/modules/2.4.37.9/extra/rt73.o". I then executed a "depmod -e" command to show unresolved symbols and it indicates the following information: request_firmware_Rsmp_38ce5074 release_firmware_Rsmp_33934162 I did a grep on the above information and it showed no source files making reference to it. I searched for it on google and it returned no results. Can anyone help?

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• How do you call a method for an Objective-C object's superclass from elsewhere?

  - by executor21

  If you're implementing a subclass, you can, within your implementation, explicitly call the superclass's method, even if you've overridden that method, i.e.: [self overriddenMethod]; //calls the subclass's method [super overriddenMethod]; //calls the superclass's method What if you want to call the superclass's method from somewhere outside the subclass's implementation, i.e.: [[object super] overriddenMethod]; //crashes Is this even possible? And by extension, is it possible to go up more than one level within the implementation, i.e.: [[super super] overriddenMethod]; //will this work?

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• Using variables for colors in table cells

  - by Mark Robinson

  Using the variables extension, I want to change the background color of a cell in a table. So far I've done this: {{#vardefine:green|<span style="background:Green; color:White">text</span>}} The problem is that, when I add {{#var:green}} to the cell, only the text itself has a green background. Ideally, I want the whole cell to have a background color, like it does if I use this: | bgcolor="#ff00ff" | test or this | style="background:silver" |silver in the cell. Does anyone know how to solve this?

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• How to execute XSLT 2.0 with ant ?

  - by paulgreg

  I'm trying to run an XSLT transformation from an ant file. I'm using a XSLT 2.0 stylesheet with a saxon 9 parser (supporting XSLT 2.0). The problem is that it seems that ant is always calling an XSLT 1.0 parser. Here's my ant file : <xslt style="stylesheet.xslt" basedir="core/" extension=".xml" destdir="core/" classpath="D:\\DevTools\\saxon\\bin\\saxon9.jar"> </xslt> If I call it directly (without ant), it's working. Any idea ?

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• How to write syntax highlighting? c++

  - by ML

  Hi All, I am embarking on some learning and I want to write my own syntax highlighting for files in C++. Can anyone give me ideas on how to go about doing this? To me it seems that when a file is opened: 1. it would need to be parsed and decided what type of source file it is. Trusting the extension might not be full-proof a way to know what keywords/commands apply to what language a way to decide what color each keyword/command gets I want to do this on OS X, C++ or Objective-C Can anyone provide pointers on how I might get started with this?

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