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• Generating CMakeLists.txt

  - by vanna

  I got a bunch of C++ sources files and headers. They may use external libraries such as Boost e.g. I am interested in the process of building binaries for Windows and *nix. Makefiles (*nix) and .vcproj (Windows) call compilers with some specifications such as the order of compilation, compilation options and stuff. CMakeLists.txt can be used by CMake to build either makefiles or .vcproj and use very helpful commands such as recursive search of files, automatic linkage with known libraries, installers, variables that can be used in source files... Is there any existing tool that would generate a CMakeLists.txt from specified options ? Options could be like : scan this folder and make a library out of it, then scan this other folder and make an executable and automatically link both with Boost as well along with a user friendly installer with generated INSTALL.txt and README.txt. Something very powerful like that.

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• Free book on C++ from

  - by TATWORTH

  At https://www.syncfusion.com/resources/techportal/ebooks/Cplusplus?utm_medium=EDM, SyncFusion are offering a free book on C++ for C# developers."C++ Succinctly was written to help professional C# developers learn modern C++ programming. The aim of this book is to leverage your existing C# knowledge in order to expand your skills. Whether you need to use C++ in an upcoming project, or simply want to learn a new language (or reacquaint yourself with it), this book will help you learn all of the fundamental pieces of C++ so you can begin writing your own C++ programs."

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• Fixing Gatekeeper Row Cardinality Estimate Issues

  The Query Optimiser needs a good estimate of the number of rows likely to be returned by each physical operator in order to select the best query plan from the most likely alternatives. Sometimes these estimates can go so wildly wrong as to result in a very slow query. Joe Sack shows how it can happen with SQL Queries on a data warehouse with a star schema. Make working with SQL a breezeSQL Prompt 5.3 is the effortless way to write, edit, and explore SQL. It's packed with features such as code completion, script summaries, and SQL reformatting, that make working with SQL a breeze. Try it now.

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• Google not showing any pages from my site in the index after three months [on hold]

  - by Alex Coisman

  Despite having a sitemap and using Google Webmaster Tools, it has been over 3 months and my site has not been added to the Google index at all. Here's the site: www.famouslefthandedpeople.com As far as I know, I have done everything correctly. However, there must be something I am overlooking that is preventing Google from indexing the site. I do not have a robots.txt file, so allow/disallow isn't the issue. Although the content of the site is sparse, it is original and not duplicated internally or externally so Panda/Penguin should not be a problem. I have reviewed the answers at Why isn't my website in Google search results? and I don't think it applies here. If it matters, I am using WordPress to create the site. What other factors should I be looking at in order to troubleshoot this?

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• Array sum of difference of first smallest k elment

  - by prateeak ojha

  Hi i come across this challenge on an online programing challange the task is so simple for ex WE have to variable N and K where N is where N is lenght of array and we have to find sum of duiffrence of K smallest element of array as Sample Input 10 4 1 2 3 4 10 20 30 40 100 200 Sample Output 10 Explanation #0 We have 10 as N size of array and K is 4 here the next N values are array's elments in order to find sum of diffrences we will takek smallest values from array which are 1,2,3,4 then will perform operation(sum of difference) as |1-2| + |1-3| + |1-4| + |2-3| + |2-4| + |3-4| = 10 I tried solving the problem and found a way through which i can solve the problem wit N^3 complexity but my solution is rejected i need a approach to solve the problem with n complexity i still can't figure out a way .. looked at some solution but coud'nt find the exact way to approach. if anybody have a better idea and would like to share it would be appreciable thanks in advance

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• How to transfer a website hosted online to my Virtual Host

  - by user831740

  I'm doing some work on a webpage, meaning I gotta modify a few things. As a result of this I installed apache and all the things that come associated with it, and also installed Joomla, and I got everything running well. My problem is, I need to make apache run this website locally, so I downloaded the public_html folder from the FTP server on my website, but I have absolutely no idea how to implement the website in order to make it run on apache. I've read a few guides, but they all tell me how to create a new website instead of helping me host a website already done.

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• Can't Make Changes via FTP on my Ubuntu Server

  - by Rev

  I'm very new to server management, I literally just set this up for the first time a couple weeks ago, no idea what I'm doing. In order to allow WordPress to run updates, apparently everything needs to be owned by www-data, but if everything is owned by www-data, I can't FTP with the user revxx14. When I try, I can't make any changes (deletions, additions, updating files, nothing. I get permission denied errors across the board). Is there a way to give my user the same permissions as www-data, so that I'll be able to keep www-data the owner, but still be able to make changes via FTP? Thanks.

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• Apache mod_disk_cache on a seperate drive

  - by pavs

  how can I set Apache mod_disk_cache on a separate drive from where the OS/Apache is installed? I have set up this on my apache2.conf: <IfModule mod_cache_disk.c> # cache cleaning is done by htcacheclean, which can be configured in # /etc/default/apache2 # # For further information, see the comments in that file, # /usr/share/doc/apache2/README.Debian, and the htcacheclean(8) # man page. # This path must be the same as the one in /etc/default/apache2 CacheRoot /media/cacheHD # This will also cache local documents. It usually makes more sense to # put this into the configuration for just one virtual host. CacheEnable disk / # The result of CacheDirLevels * CacheDirLength must not be higher than # 20. Moreover, pay attention on file system limits. Some file systems # do not support more than a certain number of inodes and # subdirectories (e.g. 32000 for ext3) CacheDirLevels 2 CacheDirLength 1 </IfModule> and it doesn't seem to be caching anything at all. The drive itself is a freshly installed ssd drive formatted with ext4.

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• Repainting a window with a new scene with winapi (beginner question)

  - by user90760

  I'm following theForger's win32 API tutorial in order to create a GUI for a project. I've successfully made simple, one window applications, but I can't figure out how to repaint an entire window with new information. As an example: I have five buttons corresponding to five colors on the main application window. When a user clicks a color button, the entire window is repainted such that: 1. all five buttons are removed and a new "back" button is replaced, 2. the background is colored the color that was picked. I'm able to change the background color by trapping the button pressed message in my wndproc, but I can't figure out how to change the entire window with a new "scene" (removing the color buttons and adding a back button). This seems like a trivial task, but I can't find a solution in tutorials. Do I need to declare a new windows class with the back button and then have my button trap create a window of this class?

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• Ubuntu 12.04 edit grub

  - by J. R. Crocker

  I just install Ubuntu 12.04. I want to change the boot order of grub. Previous versions of grub.cfg I was able to change the permissions and the do a gedit. After reloading 12.04, I was able to change permissions for grub.cfg, but gedit will not let me save it. I am a little irritated that Ubuntu is suppose to be open source. However someone has chosen to lock one out of a file. I do realize that some people have no business doing a edit on grub. I am a long time user of Unix and Linix.

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• What driver for nVIDIA GeForce MX440?

  - by ubufan

  I have recently installed (clean install) Ubuntu 12.10 on a desktop PC with nVIDIA GeForce MX440 (AGP 8x) and I have problems with Unity. Although I can see the desktop, however i can't see unity bar and icons. So, I decided to install lubuntu-desktop to see the performance. And yes! I choose lubuntu-desktop from Log On screen and the performance is definetely much better and has nothing to do with the aforementioned on unity. The system has native drivers from the Ubuntu installation. I didn't touch anything in xorg configuration. I also remember that I have managed to have the best performance with this graphic card on my previous Ubuntu 9.10 system, by editing some values in /etc/X11/xorg.conf file. But I can't remember that options, because I formatted the / partition! My question is: Which is the most suitable driver for this card, in order to load the unity feature and have better performance on it?

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• Is CodeIgniter PHP Framework suitable for large ERP or Business Application?

  - by adietan63

  Is CodeIgniter is recommended for a large web based ERP or Business Application? I want to use CodeIgniter for my future Project and I'm so confused whether to use it or not. Im so worried about in the long term process or lifetime of the application that it may crashed or produce a bug or error. I also worried about the performance of the framework when the data becomes larger and containing millions of records. I searched on the internet the answer but there is no exactly answer that will satisfy me. I think this question is important for the programmers like me who wanted to use PHP Framework for their large business application. I need an advice from you guys in order to decide whether to use it or not. thank you very much!

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• Very original V&V explanation (Bohm) - I cannot understand its point

  - by user970696

  Hopefully my last thread about V&V as I found the B.Boehm is text which I just do not understand well (likely my technical English is not that good). http://csse.usc.edu/csse/TECHRPTS/1979/usccse79-501/usccse79-501.pdf Basically he says that verification is about checking that products derived from requirments baseline must correspond to it and that deviation leads only to changes in these derived products (design, code). But he says it begins with design and ends with acceptance tests (you can check the V model inside). The thing is, I have accepted ISO12207 in terms of all testing is validation, yet it does not make any sense here. In order to be sure the product complies with requirements (acceptance test) I need to test it. Also it says that validation problems means that requirements are bad and needs to be changed - which does not happen with testing that testers do, who just checks correspondence with requirements.

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• SQL and Database: Where to start! [closed]

  - by Nizar

  First of all I just know HTML and CSS (this is my background in web development and design) and I have found that before I move to a server-side language I need to learn about databases and SQL. My first question: Do you think this order of learning is good (I mean to learn SQL after HTML and CSS)? My secod related question: Do I have to learn a lot about SQL and databases? or just the basics? and if you know any good beginners books please write their titles.

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• Ubuntu 14.04 upgrade succeeded partially - I would like to use a different mirror; how can I do that?

  - by user290648

  When I wanted to upgrade from Ubuntu 13.10 to 14.04 the update manager told me that there was an unresolvable problem with calculating the upgrade. In order to see more details I performed the following on the command line: apt-get update apt-get upgrade apt-get dist-upgrade apt-get install update-manager-core do-release-upgrade Now do-release-upgrade tells me that no newer version is available but the "about" box in the main menu tells me I am still on 13.10. I think the latter is right, as for instance in the "system settings" there is no way to select local menus, which is present in 14.04 (I tried with a DVD, and there it is). Maybe the problem is related to the fact that "apt-get update" cannot get two resources called "saucy/InRelease" and "saucy/main/binary-i386/Packages" from the mirror (mirror.informatik.uni-mannheim.de; 404 not found). I would like to use a different mirror; how can I do that? Any help appreciated, thanks in advance.

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• Google Analytics data Missing for 4 days

  - by Shumaila

  I used wrong tracking id in my E-commerce tracking code for Google analytics and missed the data for few days. To add that missing data in my account I have written a short script which manually send all orders data for four days to GA account but what my concern is date : Those orders which already placed on different dates and , when if I run my script and so it will send my missing data with current date , which I do not want. ( I want to send date when that order is actually placed) do anyone help me with this ? I am really much stuck with my work here.

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• wow ok win8 still needs some work.

  - by foxjazz

  I was on geeks with blogs on win8, and noticed I couldn't create a new post.Now using chrome with 8 and I am posting.I am finding things I like about windows 8 and things that I just don't know yet.Like what's the shortcut key to bring me to a clean legacy desktop?And also what about those apps that get suspended like the explorer app when you go to mail, and your explorer app was in the middle of downloading a file. So you have to start the download again.I am impressed with some of the improvements, however I think in order for all these things to be accepted as a matter of well by the masses, chrome or firefox (ie won't do it) needs to upgrade their browsers to work with html5 and css3 fully. Obviously the first group that does that will be the browser of choice for any user.There are other observations that I am on the verge of making, but I need to research a bit more before making any comments on the new windows store visual studio 12 environment.Have a good day,Signing off.Foxjazz

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• Someone who needs inspiration [on hold]

  - by Anestis

  My apologies if it is not a code problem. However, it is a problem that concerns programming. As a recently graduated Computer Systems Engineering I have gained some basic knowledge with programming using JAVA. I have realised 2 things, the first one is that I realy liked programming and the second is that I am not good at all. More specifically, I struggle on problem solving and when i face complex tasks I feel lost. Every day , I spend some quality time doing simple exercises in order to be more familiar with JAVA. My target is to become a good programmer and find a job on a software company. I am afraid maybe " I dont have it" thats why I am asking you , what should I do? Should i give up? Thanks in advance, Anestis

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• How can I make my Java desktop application to run on different computers in a network locally and updating same mysql database?

  - by JaMpa

  I have developed Java desktop application for registration of students in the computer laboratories in our college, but what I need is to make this application whenever it runs on any computer (Windows XP machines) on the laboratory each and every data filled by the college students goes to the same MySql database (through WAMP server) running on the server machine (Win Server 2003). Also, I need this application to run during booting of windows computers in the laboratory for the purpose when any student tries to switch on any PC in the comp lab before interfacing the desktop icons should sign in through user name and password when he has already registered or signing up in order for getting the access.

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• Am I unhireable?

  - by DrSammyD

  I've received my B.S. in Software Engineering in August 2010 and I've been looking for a job since. I've gotten two interviews since that went up to the technical phone interview and then they were no longer interested. One of the recruiters mentioned to me that they thought my fundamentals weren't strong enough. What do I need to brush up on in order to get past the technical phone interview. My language of most experience is C#. I know Object Oriented Programming. I know what the difference between an interface and an abstract class is. I've applied to positions from game programming to WPF/Silverlight. I have a portfolio website www.samarmstrong.me. It also has my resume on there. I never had real internship. Am I unhireable?

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• Matched or unmatched drives for RAID arrays?

  - by Will

  Looking around there is conflciting information on this, with some strongly suggesting one or the other. From my understanding the issue with matched drives is that the wear on both drives is more or less the same, so the potential for the second drive failing with or very soon after the first is pretty high. People also claim matched drives give substianatally higher performance however assuming the unmatched drives are more or less the same (eg 2, 1 TB STATA II 7200rpm drives with 32MB cache), would the minor differences between say a Seagate and a Western Digital one (say one has a 128MB/s read rate, and the other a 150MB/s read rate, as well as I guess various other minor differences) actually cause any notable performance loss, ie potentialy worse than two matched 128MB/s drives, or does RAID not really care and give you essentially an optimal solution (eg upto 278MB/s total read speed for RAID 0 and 1) and similar for other RAID with more "unmatched" drives (5 and 1+0 come to mind as possibilities)? Also I couldnt find much info on how this is different on different RAID setups, eg RAID 0 or RAID 1, software or hardware RAID, etc. I'm assuming such things have an effect, and thats it's not all the same for RAID in general?

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• Is there a batch processing framework that could be used for C++ applications?

  - by Benjamin

  In my team we develop several command-line C++ applications that work together; they're currently run by hand in separate windows, and after a while managing windows gets really confusing. I'm looking for a better way to manage the processing of these applications; ideally it would have a GUI with the ability to do the following: start applications in a specified order display application status close particular applications Is there anything available that does this type of thing or would we need to develop our own? Is there a better way than this?

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• Read all of ASP.NET MVC 2 in Action now while you wait for the printed book

  First, you should place your advance order for ASP.NET MVC 2 in Action at http://manning.com/palermo2.  That way, you will receive the printed book even before you see it at your local bookstore.  The entire book is finished, and we are just moving through production right now.  But that doesnt mean you have to wait to read it and learn about ASP.NET MVC 2.  Since the beginning of the book project, you have been able to see the progression of the book on GitHub, our project...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Make the player run onto stairs smoothly

  - by misiMe

  I have a 2D Platform game, where the player Always runs to the right, but the terrain isn't Always horizontal. Example: I implemented a bounding-box collision system that just checks for intersections with player box and the other blocks, to stop player from running if you encounter a big block, so that you have to jump, but when I put stairs, I want him to run smoothly just like he is on the horizontal ground. With the collision system you have to jump the stairs in order to pass them! I thought about generating a line between the edges of the stairs, and imposing the player movement on that line... What do you think? Is there something more clever to do?

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• where are the default ulimit values set? (linux, centos)

  - by nomercysir

  I have two CentOS (5) servers with nearly identical specs. When I login and do: ulimit -u on one machine, I get unlimited and on the other, 77824 When I run a cron like * * * * * ulimit -u > ulimit.txt I get the same results (unlimited, 77824). I am trying to determine where these are set so that I can alter them. They are not set in any of my profiles (.bashrc, /etc/profile, etc .. these wouldn't affect cron anyway) nor in /etc/security/limits.conf (which is empty). I have scoured google and even gone so far as to do grep -Ir 77824 / but nothing has turned up so far. I don't understand how these machines could have come preset with different limits. I am actually wondering not for these machines, but for a different (CentOS 6) machine which has a limit of 1024, which is far too small. I need to run cron jobs with a higher limit and the only way I know how to set that is in the cron job itself. That's ok, but I'd rather set it system wide so it's not as hacky. Thanks for any help. This seems like it should be easy (NOT) EDIT -- SOLVED Ok, I figured this out. It seems to be an issue either with CentOS 6 or perhaps my machine configuration. On the CentOS 5 configuration, I can set in /etc/security/limits.conf: * - nproc unlimited and that would effectively update the accounts and cron limits. However, this does not work in my CentOS 6 box. Instead, I must do: myname1 - nproc unlimited myname2 - nproc unlimited ... And things work as expected. Maybe the UID specification works to, but the wildcard (*) definitely DOES NOT here. Oddly, wildcards DO work for the 'nofile' limit. I still would love to know where the default values are actually coming from, because by default, this file is empty and I couldn't see why I had different defaults for the two CentOS boxes, which had identical hardware and were from the same provider.

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