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  • Guide To Be An Active Facebook Member With Safety

    These days many people from all over the world have a fun time by browsing online social networking websites like Facebook. The reason is that they are the superb means to be in contact with friends ... [Author: Susan Miller - Computers and Internet - May 17, 2010]

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  • General programming techniques to speed up coding time

    - by mcwise
    I am preparing for a programming contest in C++ where it is all about producing working code in a short time. An example would be to use a macro to get the minimum of two ints(but I was told that you shouldn't use macros as they are not type-safe) or using memsets to initialize arrays (but I was told that you shouldn't use memsets in C++). This leads to the question, what kind of coding techniques exist to use at a real job?

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  • Why C++ people loves multithreading when it comes to performances?

    - by user1849534
    I have a question, it's about why programmers seems to love concurrency and multi-threaded programs in general. I'm considering 2 main approach here: an async approach basically based on signals, or just an async approach as called by many papers and languages like the new C# 5.0 for example, and a "companion thread" that maanges the policy of your pipeline a concurrent approach or multi-threading approach I will just say that I'm thinking about the hardware here and the worst case scenario, and I have tested this 2 paradigms myself, the async paradigm is a winner at the point that I don't get why people 90% of the time talk about concurrency when they wont to speed up things or make a good use of their resources. I have tested multi-threaded programs and async program on an old machine with an Intel quad-core that doesn't offer a memory controller inside the CPU, the memory is managed entirely by the motherboard, well in this case performances are horrible with a multi-threaded application, even a relatively low number of threads like 3-4-5 can be a problem, the application is unresponsive and is just slow and unpleasant. A good async approach is, on the other hand, probably not faster but it's not worst either, my application just waits for the result and doesn't hangs, it's responsive and there is a much better scaling going on. I have also discovered that a context change in the threading world it's not that cheap in real world scenario, it's infact quite expensive especially when you have more than 2 threads that need to cycle and swap among each other to be computed. On modern CPUs the situation it's not really that different, the memory controller it's integrated but my point is that an x86 CPUs is basically a serial machine and the memory controller works the same way as with the old machine with an external memory controller on the motherboard. The context switch is still a relevant cost in my application and the fact that the memory controller it's integrated or that the newer CPU have more than 2 core it's not bargain for me. For what i have experienced the concurrent approach is good in theory but not that good in practice, with the memory model imposed by the hardware, it's hard to make a good use of this paradigm, also it introduces a lot of issues ranging from the use of my data structures to the join of multiple threads. Also both paradigms do not offer any security abut when the task or the job will be done in a certain point in time, making them really similar from a functional point of view. According to the X86 memory model, why the majority of people suggest to use concurrency with C++ and not just an async aproach ? Also why not considering the worst case scenario of a computer where the context switch is probably more expensive than the computation itself ?

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  • Top 6 Methods of Link Building

    Link building is single most important strategy for effective search engine optimization. With tons of websites being added to the World Wide Web everyday, it is very important to keep your website popular by creating high value back links. Beginners commit very obvious mistakes in their link building practices which can be easily avoided if one follows the recommendations.

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  • C is number one!

    <b>Cyber Cynic:</b> "What I didn't know was that, old as it is, C has actually maintained more of its popularity than I had thought and that it's now once more the number-one programming language in the world."

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  • WWW - Why Websites Work

    In this ever changing world of digital domination, the internet is the most effective way to communicate to others, your ideas, products, services, or information. Learn why having a website is so important for effective online marketing and education.

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  • Apple's Journey to the Top

    OS Roundup: Was it exclusion or exclusivity that fueled Apple's journey to being the world's biggest technology company? Or perhaps it's Apple's understanding and ability that when the producer names the tune, the consumer must dance.

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  • Apple's Journey to the Top

    OS Roundup: Was it exclusion or exclusivity that fueled Apple's journey to being the world's biggest technology company? Or perhaps it's Apple's understanding and ability that when the producer names the tune, the consumer must dance.

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  • Finding the Right Web Marketing Company

    There are so many websites out there that are in the same market as you. This means that there is a chance that yours may get lost in the online world and never reach the target market that it intends to. Web marketing is a strategy that has been taken up by many businesses due to the fact that that it is more effective than traditional marketing strategies. So there is a fundamental need to set yourself apart from your competitors in order to reach your desired target audience by generating the relevant leads.

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  • Maintaining unmaintainable code

    - by uman
    Hi guys, I'm at a job where I have to do a lot of bugfixing in code that's, shall we say, not the most best-practicey in the world. One example I found today: The logic for checking whether a form has been modified and we should prompt the user if he wants to save is in a function called "IsImage". The function has nothing to do with images whatsoever. Hmmm... How do fellow stackexchangers deal with situations like this and maintain their sanity?

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  • SQL Southwest, Thursday 18th Oct - User Group Meetup and Virtual Meetup

    October's meeting on Thursday 18th will be a virtual meeting which means anyone in the world can attend if they have access to a PC with an internet connection. We are pleased to announce that Grant Fritchey will be giving us 2 sessions. "It really helped us isolate where we were experiencing a bottleneck"- John Q Martin, SQL Server DBA. Get started with SQL Monitor today to solve tricky performance problems - download a free trial

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  • Intel veut accélérer la mise sur le marché de MeeGo et présente une tablette équipée de son OS mobile développé avec Nokia

    Intel veut accélérer la mise sur le marché de MeeGo Et présente une tablette équipée de son OS mobile développé avec Nokia En collaboration avec Hinault Romarick A l'occasion du Mobile World Congress 2011 de Barcelone, Intel a publié une démonstration filmée de son OS mobile open-source MeeGo s'exécutant sur une tablette. Le constructeur, partenaire de Nokia dans le développement du système d'exploitation, renouvelle ainsi son engagement dans le projet. Une vidéo sous forme de réponse quelques jours après le choix de Windows Phone 7 par Nokia pour équiper sa prochaine gé...

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  • 8 Different Types of Websites

    Defining websites is more complicated now than ever thanks to the diversification and development of resources and technology. Below is a breakdown of different types of websites you can encounter on the World Wide Web.

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  • SMTP server to deliver ALL mail to user@localhost

    - by cam8001
    I'd like to configure an SMTP MTA to accept all mail addressed to any domain and deliver it to my local user account. It would be very useful for debugging mail sent in some code I'm working on. I'll be running the server locally - no outside world interaction required. To be clear: [email protected] - delivered to - cam8001@localhost [email protected] - delivered to - cam8001@localhost [email protected] - delivered to - cam8001@localhost

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  • SEO Metrics Tools - The Latest Craze

    We all know that Search Engine Optimization is the latest craze everywhere in the world of e-commerce. But this SEO is actually part of Search Engine Marketing or SEM where the promotion of any official website is being carried by increasing the number of visibility in the search engine result pages with the help of SEO.

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