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  • how do we clear new programming concept

    - by Sarang
    In IT world, new latest technologies are generated daily. Every time, every programmer need to learn something & then clear it conceptually to implement. All new technologies are built on some basic concepts. But, these technologies have their own area of development & a developer is supposed to grasp it from very basic. This seems like starting from very beginning to reach till current. What is the best & fast way to learn and grasp a new developed technology ?

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  • Understanding Asynchronous Programming with .NET Reflector

    - by Nick Harrison
    When trying to understand and learn the .NET framework, there is no substitute for being able to see what is going on behind at the scenes inside even the most confusing assemblies, and .NET Reflector makes this possible. Personally, I never fully understood connection pooling until I was able to poke around in key classes in the System.Data assembly. All of a sudden, integrating with third party components was much simpler, even without vendor documentation!With a team devoted to developing and extending Reflector, Red Gate have made it possible for us to step into and actually debug assemblies such as System.Data as though the source code was part of our solution. This maybe doesn’t sound like much, but it dramatically improves the way you can relate to and understand code that isn’t your own.Now that Microsoft has officially launched Visual Studio 2012, Reflector is also fully integrated with the new IDE, and supports the most complex language feature currently at our command: Asynchronous processing.Without understanding what is going on behind the scenes in the .NET Framework, it is difficult to appreciate what asynchronocity actually bring to the table and, without Reflector, we would never know the Arthur C. Clarke Magicthat the compiler does on our behalf.Join me as we explore the new asynchronous processing model, as well as review the often misunderstood and underappreciated yield keyword (you’ll see the connection when we dive into how the CLR handles async).Read more here

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  • networking related problem

    - by abhay
    i have installed two LAN cards in my PC. one is used for local networking and other is for Wide area networking( both have a different gateways). But when i need to browse in WAN for that i have to disable my LAN and vice versa. so i don't know the technical / logical reason behind that. so could you please give me reason why this happens.

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  • Basic Defensive Database Programming Techniques

    We can all recognize good-quality database code: It doesn't break with every change in the server's configuration, or on upgrade. It isn't affected by concurrent usage, or high workload. In an extract from his forthcoming book, Alex explains just how to go about producing resilient TSQL code that works, and carries on working.

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  • C++ Programming: Better Accessibility with High DPI Support and MFC 10

    A number of factors are driving the requirement for applications to correctly support high DPI settings--increased monitor resolutions are making it more difficult for users to read text on the screen, compliance with disability access legislation is an increasingly important factor for corporations, and users are now expecting applications to behave well at higher DPI settings. MFC 10 and Visual C++ 2010 have built-in support for high DPI, making the development of a DPI-aware application quicker and more simple.

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  • Any enlightenment for understanding Object Oriented Programming? [closed]

    - by ????
    I studied computer science near the end of 1980s, and wasn't taught OOP that formally. With Pascal or C, when I understand the top-down design of functions, and the idea of black box, then everything just seem to make sense, as if there is a "oh I get it!" -- some kind of totally getting it and enlightenment feeling. But with OOP, all I know was the mechanics: the class, instance, method, inheritance, polymorphism, encapsulation. It was like, I knew all the "this is how it is", but never had the feeling of "I totally get it", the enlightened feeling. Would somebody be able to describe it, or point to a chapter in some book or paper which talks about OOP so that the reader can feel: "I totally get it!" on OOP?

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  • Scrum got specific ways for testing software?

    - by joker13
    When reading Scrum Guide, as the official text for scrum, I find out there is no specific solution to provide software testing in scrum. (the only hint is on page15) I'm a little vague on whether scrum is considered a software development methodology or not? If it is not, then how come some of its practices opposes Extreme Programming? (I know that in scrum guide, the author notes that scrum is a framework not a methodology, but still I'm not pretty clear on that) And what's more, I'm not sure if there are any other important textbook that I'm missing so far about scrum. I need them to be official or of great deal of public acceptance.

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  • How similar are programming and architecture?

    - by blueberryfields
    A friend of mine has completed an undergraduate program in architecture. Disillusioned with the industry and available work options, she is now looking to change careers, and become a professional software developer. What can she expect will be similar to her existing education, and will therefore be easy for her to pick up? What will be difficult? Does any of her experience so far transfer? Any other advice or information that she should know, before making the jump?

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  • Quake 3 Bot Programming Example

    - by Manni
    I would like to implement an intelligent bot for Quake-3. I downloaded the and built the code successfully under Linux. My problem is that I couldn't find any complete tutorial telling me how to build an agent; telling which files to use( as there are many files in the source code). Can you give me a website or piece of source code telling me how to start? Or something like an example source code for a bot.

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  • Online Poker Game Programming

    - by Eyal
    I am trying to write a massive online multiplayer client for a poker site, where one user can be on a Flash client and the other on say an iOS client (iPhone / iPad), and would like to know how can interaction between two users be visible on both clients. What would be better to use? Should I use MSMQ? AJAX? Something other? I need the messaging layer (client interaction messages) to scale up to 100K+ online users to begin with. In other words; What scalable technology can I use to make game interactions between online users visible to all game participants?

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  • The Underlying Value of Aspect-Oriented Programming

    - by Brian
    Hello, I recently got into PostSharp, an AOP tool for weaving in code. I've been finding a lot of resistance with other developers over giving up writing code to perform the tasks the weaving was meant to simplify. For instance, I'm finding logging or error-handling code where I have postsharp already doing that. I can understand why its happening, since its hard to remember everything that weaving was setup to do (I'm applying a global attribute definition). With that said, factoring in levels of experience, etc, is AOP beneficial to a project? What is your opinion? Thanks.

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  • Amazon Kindle e-Ink based device programming: Java ME CDC old school

    - by hinkmond
    If you like doing Amazon Kindle development in the old-school way (Java ME CDC-based apps) on their e-Ink based readers, then here's how to download and use the Amazon Kindle Development Kit (KDK). See: Download Amazon KDK Here's a quote: We're excited to introduce the all- new Kindle family: Kindle, Kindle Touch, and [blah-blah]. The KDK has APIs, tools, and documentation to help you create active content for Kindle, Kindle Touch, and other E Ink Kindles. Kickin' old school with Java ME CDC technology is the way to go. You can come up with the next Word with Friends this way. Hinkmond

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  • What programming concept is used in Nokia Lumina City Lens application [closed]

    - by gowri
    I am totally impressed about the Nokia City Lens application. How does the Nokia Lumia City Lens app work? Nokia Lumia City Lens app detects shops, restaurants, etc. by scanning the visual environment. But how can it detect shops or anything by only scanning visual information? Because we need a 360 degree view to detect a location. Because we can't simply match visual information and get that data. The visuals will change proportionally with distance and angle. So how does this app match the location and retrieve the information? Can anyone explain the concept What technology or algorithm is used in this app?

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  • mailsend not sending to (or qmail not receiving from) the same machine

    - by roman
    A web applications sends two emails: to the user of the webapp to the administrator the administrators mailbox (qmail) is on the same machine as the web application (php, apache, /usr/sbin/sendmail). email 1 works, email 2 sometimes doesn't work. I don't see any pattern in the mails that don't work. Also because I don't exactly know WHICH emails failed (since the email itself would be the only notification). email 2 looks like this: from: <[email protected]> #changes for each user to: <[email protected]> What could be the problem? Are rejected emails stored somewhere? (if they are rejected.. how do I check this?)

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  • Mysterious OS X FileVault-related home directory

    - by Nick
    I recently enabled FileVault on Snow Leopard, and after doing so, found a directory /Users/<myusername>.4529809818604982560, containing the original (unencrypted) contents of my home directory, owned by root:wheel with permissions 700, side-by-side with my normal home directory. Does anyone know why this was created (maybe a temporary backup that didn't get erased), or whether deleting it will be harmful?

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  • DPMS does not work: the monitor is not switched off

    - by bortzmeyer
    I have a monitor which was properly switched off by my Debian PC when unused. I attached it to another machine and, this times, it is never switched off. In /etc/X11/xorg.conf, I have: Section "Monitor" Identifier "Generic Monitor" Option "DPMS" It is recognized when X11 starts: (II) Loading extension DPMS ... (II) VESA(0): DPMS capabilities: StandBy Suspend Off; RGB/Color Display ... (**) Option "dpms" (**) VESA(0): DPMS enabled The operating system is Debian stable "lenny". The graphics card is: 00:02.0 VGA compatible controller: Intel Corporation 82G33/G31 Express Integrate d Graphics Controller (rev 02) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Device 2a6f Flags: bus master, fast devsel, latency 0, IRQ 5 Memory at fe900000 (32-bit, non-prefetchable) [size=512K] I/O ports at b080 [size=8] Memory at d0000000 (32-bit, prefetchable) [size=256M] Memory at fe800000 (32-bit, non-prefetchable) [size=1M] Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable-Capabilities: [d0] Power Management version 2 X11 is: X.Org X Server 1.4.2 Release Date: 11 June 2008 X Protocol Version 11, Revision 0 Build Operating System: Linux Debian (xorg-server 2:1.4.2-10.lenny2) Current Operating System: Linux ludwigVII 2.6.26-2-686 #1 SMP Sun Jun 21 04:57:3 8 UTC 2009 i686 Build Date: 08 June 2009 09:12:57AM

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  • UBUNTU.. GRUB problem

    - by pravinp
    Hi, I have/(had) windows xp on one partition of my hdd. on second i installed ubuntu 9.10 yesterday. and after reboot of windows xp i get error "GRUB LOADING.". now i know that you can play around with that using live GRUB and all. putting GRUB on top of MBR or etc etc. something like that. i want to know - if i reinstall Ubuntu 10.04 which is available now - will it give me still the same error? or i will be able to use both OS? (i.e. is that problem solved in version 10.04 or still there? and if it is solved reinstallation of ubuntu will solve the problem or not?) anyhelp is welcome. Thanks

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  • Matching my skills with Java and Web Programming

    - by John R
    here is my main question: What is the most common way that Java is used in web development? The reason I ask: I am currently in the process of finding my first internship. Every employer has a separate set of languages, technologies and acronyms they want their candidates to know. In school I did well with Java. As a hobby and interest I have developed a handful of web pages widgets, scripts, etc. My university emphasized Java, C and theory. My hobbies emphasize HTML, PHP, JavaScript, CSS, and a little jQuery, etc. I can't learn a dozen different technologies to satisfy most prospective employers (in what is left of the summer). I think my best bet is combine my skills with Java and my interests in web development. That brings me back to my original question: What is the most common way that Java is used in web development?

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  • Cisco ASA site-to-site vpn not initiating phase 1 (not sending udp 500 packets)

    - by Sean Steadman
    I am hoping someone here can help me with my problem. I am trying to setup an IPSEC site-to-site VPN between two cisco ASA 5520's in GNS3 (both using 8.4.2). I have been unsuccesful in getting the tunnel up and it appears neither ASA is sending packets out,in regards to phase 1 and phase 2 (tested by using wireshark and seeing NO udp 500 packets). Doing show ipsec sa and such shows nothing. CALIFORNIA(config)# show ipsec sa There are no ipsec sas FLA-ASA# show ipsec sa There are no ipsec sas I will attach both configurations in two different pastebin files as to keep this post a bit cleaner. Essentially California side has 172.20.1.0/24 and Florida side has 10.10.10.0/24. California ASA config: http://pastebin.com/v0pngYzF Florida ASA config: http://pastebin.com/E2geybta Please let me know if there is any other vital information that could help. I have gotten IPSEC tunnels to work using openSwan (linux) and cisco routers but cannot for the life of me get ASA IPSEC tunnels to work. The ASDM is out of the question I only use cli. Thanks for any useful help!

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