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• How are crossplatform/multiple-OS C++ projects planned in terms of code and tools?

  - by Nav

  I want to create a project in C++ that can work in Windows, Linux and Embedded Linux. How are projects created when they have to work across many OS'es? Is it first created on one OS and then the code slowly modified to be ported to another OS? Eg: to me, the Linux version of Firefox appears to be created as a Windows project and a separate Linux project with a different code base, since Firefox behaves a bit different in Windows and Linux. Although the source code download is surprisingly a single link. If QT is used for UI, Boost threads for threading, Build Bot for CI and NetBeans/Eclipse/QT Creator for an IDE, would a person be able to minimise the amount of code re-write required to get the project onto another OS? Is this the right way to do it, or are such projects meant to be created as two entirely separate projects for two separate OS'es?

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• Graphic card for parallel programming vs traditional methods

  - by Sambatyon

  With a simple search in amazon one can see that the modern approach for parallel programming is to use your graphic card. However I am still a little bit skeptical about it. My last computer has an 8 core CPU which I need is enough for basic all my parallel needs, if I need more I will probably use MPI through a network using my old machines. All in all, Why and/or when should I use CUDA or another method which uses my graphic card instead of traditional methods like pthreads, java threads, boost threads or the new C++ 11 threads? What about using processes?

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• Tons of problems a new user is encountering

  - by Barney

  I've borrowed this laptop from a friend. I wanted to install AdBlock to boost performance. First weird thing was that even though I was on Chrome, Chrome suggested me installing him? So I tried to install ,than it gave me some message about broken dependencies. I Googled and tried to run those commands you guys were suggesting, but than it popped up error messages about everything again. Than I found out that some package called linux image generic is broken, than I tried to find an answer to that, but on the topic it was ” ndk.bhj\spo;ujvsdljvaEOYUFgidgAPIF;hsgvk in other words, I didn't understand anything about it, than there's this thing: E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it? Seriously, when I'm trying to fix an error, there is another one. I'm on something called GNOME. Sooo, where do I start?

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• LL(8) and left-recursion

  - by Peregring-lk

  I want to understand the relation between LL/LR grammars and the left-recursion problem (for any question I know parcially the answer, but I ask them as I don't know nothing, because I am a little confused now, and prefer complete answers) I'm happy with sintetized or short and direct answers (or just links solving it unambiguously): What type of language isn't LL(8) languages? LL(K) and LL(8) have problems with left-recursion? Or only LL(k) parsers? LALR(1) parser have troubles with left or right recursion? What type of troubles? Only in terms of the LL/LALR comparision. What is better, Bison (LALR(1)) or Boost.Spirit (LL(8))? (Let's suppose other features of them are irrelevant in this question) Why GCC use a (hand-made) LL(8) parser? Only for the "handling-error" problem?

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• Alternative to Firefox's Tab Groups feature for Chromium/Chrome

  - by Halkinn

  Firefox keeps crashing the whole time on my Lubuntu 12.04 since version 12, I don't know why, I am running it on a Pentium IV desktop so might be CPU shortage, however I use the same set of extensions and configurations that I have on Windows' Firefox and it rarely crashes, runs smoothly and besides on Windows it can handle much more tabs opened before some freeze actually happens. Chromium is working better so far on Lubuntu, but I really do miss the Tab Groups Firefox feature, which is great to group tabs and organize them, it really is a boost on my productivity. Are you aware of any add-on which is similar for Chrome/Chromium? I've searched around on Chrome's Web Store but no luck at the moment.

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• Performance Driven Manufacturing

  Manufacturers are searching for new, creative ways to address growing demands of global manufacturing. They want the latest tools and technologies to boost performance from their operations, suppliers, partners, distributors, and extended ecosystem, and they need global views for better visibility - both internally and across the extended supply chain. In addition, operations must move information more effectively to gain real-time insight into manufacturing shop floor status. Whether it's inside the plant or outside the traditional factory walls, manufacturers are searching for solutions to help them produce more for less, lower their total cost of ownership (TCO), and improve their return on investment (ROI).

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• What a c++ dev can expect on an interview to Rails company?

  - by Nazgob

  Hello, little background first. I have been working on C++ backend large scale apps for over 5y. I'm doing TDD, using STL and Boost etc. I decided I need a change and about year ago started learning Ruby, few months ago I started playing with Rails, html5 and css. I don't know JavaScript(yet... I focus on Rails now) What can I expect on an interview for a Ruby on Rails backend developer job? How can I present myself to take advantage of my c++ experience? I'm on a senior level now and I can't start from intern position.

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• One Week on New Servers and Everything is Great

  - by Jeff Julian

  It has been a week since we moved our Geekswithblogs.net System to a new set of load balanced servers and everything has been going great.  I am so amazed at the performance of the new hardware.  On average, we only use less than 5% of the CPU at any given moments or the database and web servers.  I have seen a performance boost in page load as well, but I will have to confirm that with the statistics as they roll in.  This is all in preparation for a new community we are launching with some friends that we will be announcing shortly.  We will be launching a nice little contest for our bloggers as well. Technorati Tags: Geekswithblogs.net,Hardware

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• Column-Level Encryption in SQL Server

  Beginning with SQL Server 2005, column-level encryption and decryption capabilities were made available within the database, providing a solution for situations where one-off types of data need to be secured beyond your existing authorization, authentication or firewall settings. This article provides an overview and example of securing a column using native SQL Server cryptography functions. Join SQL Backup’s 35,000+ customers to compress and strengthen your backups "SQL Backup will be a REAL boost to any DBA lucky enough to use it." Jonathan Allen. Download a free trial now.

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• C++ vainqueur d'un benchmark avec Java, Scala et Go présenté aux Scala Days, l'étude portait sur l'implémentation d'un algorithme

  C++ vainqueur d'un benchmark avec Java, Scala et Go Présentée aux Scala Days, l'étude portait sur l'implémentation d'un algorithme Bonne nouvelle pour tous les amateurs de C++ ! Ce langage reste le plus performant et sans conteste ! Présenté au Scala Days en début de mois, un benchmark met en compétition le C++, Java, Scala et GO pour l'implémentation du même algorithme en cherchant à s'appuyer sur les éléments du langage (pas de Boost ici donc). Et C++ remporte haut la main en temps d'exécution mais aussi en empreinte mémoire. Mieux, contrairement à certaines idées reçues, les temps de compilation ou le nombre de ligne de code restent à des valeurs qui n'ont pas à rougir face à Java par exemple....

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• How can I write data to a file that users can't easily edit?

  - by ThePlan

  While working on game saving and loading I figured I could just write all the variable values to a file and then load that file from it's default location anytime. However from the very beginning it sounded like an odd job. I know about serialization and boost, but that seems so complicated, I figured I'd keep it simple, but I've ran across this huge issue: No matter what file I can write with C++, the user can get their hands on it, they can edit their position, they can remove a boss, or add new weapons for themselves. My question here is: How can I create a file in C++ which cannot be editted or openned with a text editor such as Notepad (I'm not trying to make a file which is impossible to open, but a file which will give the user a headache if he tries to edit it through usual methods.)

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• pulseaudio: no microphone configuration

  - by mitsch

  Updated Ubuntu to precise from oneiric on a Dell Inspirion Mini 10 (with an Intel HDA-Soundcard). I can't remember having any issues with the microphone. I didn't need it - I tried ekiga the first time in precise. I couldn't hear any sound in the echo test of ekiga, so I switched to the "System Preferences" and looked for the microphone to boost it. Surprisingly, the microphone input was greyed out - I couldn't mute or unmute, i couldn't even move the volume-slider. On the other hand: I could change the microphone-setting on console with alsamixer, so don't worry about that… :) I just wanted to ask, how to get pulseaudio back to the known, comfortable behaviour. Some newbies won't know the trick to use alsamixer… My soundcard (output of lspci): 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02) Greets!

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• SQL Server Migration Assistant 2008 (SSMA)

  One of my client’s requirements is to migrate and consolidate his company departments’ databases to SQL Server 2008. As I know the environment, they are using MySQL , MS-Access and SQL Server with different applications. Now the company has decided to have a single dedicated SQL Server 2008 database server to host all the applications. So there are a few things to do to upgrade and migrate from MySQL and MS-Access to SQL Server 2008. For the migration task, I found the SQL Server Migration Assistant 2008 (SSMA 2008) is very useful which reduces the effort and risk of migration. So in this tip, I will do an overview of SSMA 2008. Join SQL Backup’s 35,000+ customers to compress and strengthen your backups "SQL Backup will be a REAL boost to any DBA lucky enough to use it." Jonathan Allen. Download a free trial now.

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• Is it OK to live without knowing how the program you created works?

  - by Kabumbus

  I mean, there are really useful libs that can solve problems when you are stuck and do not know how to solve this or that with your knowledge of programing language you use... For example, Boost for C++ or JQuery for JavaScript or Spring for Java... They solve problems in seconds and you do not really care how they did it (despite that they are written in the very same language you are programming in)... So I wonder am I alone use libs not being capable to write solutions for my problems from scratch or its standard practice?

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• Distributing a very simple application

  - by vanna

  I have a very simple working console application written in C++ linked with a light static library. It is just for testing purposes. Now that the coding part is done, I would like to know the process of actually distributing the program. I wrote a very basic CMakeLists.txt that create makefiles or VS projects to build the sources. I also have a program that calls the static library in order to make some google tests. To me, the distribution of this application goes like this : to developpers : the src directory with the CMakeLists.txt file (multi-platform distribution) with a README.txt and an INSTALL.txt to users : the executable and a README.txt on my git repo : everything mentionned above plus the sources for testing and the gtest external lib A this point : considering the complexity of my application, am I doing it right ? Is there any reference that would formalize this distribution process so I can get better and go further ? Say I would like to add dynamic libraries that can be updated, external libraries like boost : how should I package this to distribute it in a professionnal way ?

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• Automatic Statistics Update Slows Down SQL Server 2005

  I have a database which has several tables that have very heavy write operations. These table are very large and some are over a hundred gigabytes. I noticed performance of this database is getting slower and after some investigation we suspect that the Auto Update Statistics function is causing a performance degradation. Join SQL Backup’s 35,000+ customers to compress and strengthen your backups "SQL Backup will be a REAL boost to any DBA lucky enough to use it." Jonathan Allen. Download a free trial now.

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• Generating SQL Server Test Data with Visual Studio 2010

  As a database developer or tester sometimes you need to have production like data in your environment for your development or testing, but you cannot have the production data because of security and privacy issues. So how you can generate test data or replicate similar data as in production for your development or test environment? Join SQL Backup’s 35,000+ customers to compress and strengthen your backups "SQL Backup will be a REAL boost to any DBA lucky enough to use it." Jonathan Allen. Download a free trial now.

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• Build automation: Is it usual to use QMake for non-Qt projects?

  - by Raphael

  So, I'm planning to write a C++ library and I want it to be cross-platform, and as this library won't deal with UI and I want it to have as little dependencies as possible, I won't be using Qt (actually Qt won't really help me to achieve what I want, all I plan on using is STL and Boost). Now when it comes to build a cross-platform project, I really like QMake as it's extremely easy to use and I have experience with it. I also heard good things about CMake, though I really doubt it's as easy to use as QMake. Anyway, here is my question: Should I stick with build automation tool that I know or is QMake just out of context for a non-Qt project? Should I take this as an opportunity to learn CMake? Or is there a better alternative to these two?

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• What would be topic for research in on edge of multiple processors / computers programming?

  - by Kabumbus

  I mean what is not already there? What can be developed in fiew month and give a breakthrue/ start a new leap in science of f multiple computers programming? What i see is already there MPI/ Bit torrent/Jabber protocols / APIs / servers for messaging LAN / wire and other infrastractural cabels for connecting Boost and analogs on evry OS in most languages for multithreading there are lots of CUDA like on computer frameworks for fast calculating on computers GPUs What I personally do not see out there is a crossplatform framework for multiple processes interaction. Meaning one that would allow easy creation of multyple processes running in paralell inside one hoster app on one machine. In level not harder than needed for threads creation (so no seprate server apps - just one lib doing it all) Is there ny such lib and what can you propose for research topic?

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• Folly : la bibliothèque C++ open-source de Facebook, une initiative pour partager les outils utilisés en interne

  Folly : la bibliothèque C++ open-source de Facebook Une initiative pour partager les outils utilisés en interne Herb Sutter, l'expert reconnu du langage C++, encense dans son dernier billet de blog l'initiative de Facebook qui vient tout juste de publier en open-source sa bibliothèque d'utilités : Folly. Cette bibliothèque contient tout un tas d'algorithmes et de structures utilisés dans le code de Facebook. L'essentiel des fonctionnalités couvre les problèmes de performances ou d'absence d'implémentations trouvés dans les bibliothèques déjà existantes comme Boost ou la bibliothèque standard. De plus en plus d'entreprises mettent leur code source à disposition de tous et permettent...

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• New White Paper: The Career Benefits Of Certification

  - by Harold Green

  Is Certification Worth It? The answer is a resounding YES for IT professionals who are looking to boost their career. While there are no guarantees, certification has been shown to enhance various aspects of an IT professional’s career, including: Employability Salary Job Effectiveness Job Satisfaction With the economy in a slump and unemployment at record levels, it’s tougher than ever to stand out in the competitive field of IT. Numerous research studies have shown that certification can provide IT professionals the knowledge & skills they need to succeed. This new white paper from Oracle and Pearson VUE summarizes the key advantages of certification and provides examples from IT professionals on the benefits of certification. Download your copy now.

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• GRUB's menu.lst deleted after a kernel update

  - by the_drow

  I have installed ubuntu through wubi and all was well until I updated to the next kernel version. I am now trying to boot into ubuntu and it shows me the GRUB rescue command line. I am able to boost windows and the problem seems to be related to the fact that I have no menu.lst on ubuntu\disks\boot\grub and also it might be related to the fact that wubi wasn't installed to the drive where windows is installed but I am not sure. How do I recover menu.lst? Does the problem lay somewhere else? Is there a way to read the data with a windows tool to just recover my data?

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• Monitor aspect ratio; Does the difference matter?

  - by Craige

  So, I'm looking ordering myself a new development desktop soon and setting up a PROPER office environment by the end of this year. To boost productivity, I'm going to purchase three new monitors. I find that two just isn't enough when I'm debugging or doing something intensive. That said, I had something pointed out to me the other day that I never really noticed nor cared about before - is the difference between a 16:10 and a 16:9 monitor noticeable when programming? Do you really miss those few extra lines, or is it something that you don't notice at all. I notice HP only seems to sell 16:9 monitors (as far as I have found). Is this becoming something of a new standard with the recent growth and cleaver marketing of of "HD 16:9"? To summarize: Has anybody made the switch from 16:10 to 16:9 (or vise-versa) and actually noticed the difference while programming?

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• How to Build Business Links With SEO Value

  In order to create order and plan in the site and make it more identifiable by a business community around, SEO link building requires membership strategies that aid it in its automatic operations by following a universal hub with potential links. The starting point is to obtain a link with the national or regional authority of commerce through its website. This will give the site a licensed look and due to its frequent interaction with the government body it will be a confidence boost for other links. This will also help market it as a recognized site that is secure to communicate with.

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• Search Engine Optimization Crucial For Site Page Rank

  Search engine optimization is a process to drive traffic to your blog or sites. Search engines are the best way to give you the traffic that will boost your product sell. And as per the internet marketing is concern the search engine optimization is best way. The reward are numerous but the two that stand out are; you blog will rank higher and you will generate traffic directly proportional to higher selling of your product. For a long time now sitemaps have assisted online business people achieve webpage site optimization.

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