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  • terminal tools and logs for debugging TCP issues

    - by kellogs
    I have a server which I am testing for functionality (not load, not stress) with tsung. 50 users / second, 100 total users. Judging from tsung (tsung is the testing framework) graphs, there TCP connections (red line) drops to 0 while the commenced user sessions (green line) does not. Server logs show nothing to be gripping onto, so I am speculating some kind of TCP issue. Should this be the case ? Where would I look further on the server, any logs / tools to be looking at ? Only SSH available, no GUI. > root@XMPP:~# cat /etc/lsb-release > DISTRIB_ID=Ubuntu > DISTRIB_RELEASE=11.10 > DISTRIB_CODENAME=oneiric > DISTRIB_DESCRIPTION="Ubuntu 11.10" Thank you

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  • How to handle interruptions in developer work without losing concentration? [closed]

    - by tomaszs
    I work as a developer for some years now. Mainly the issue why it's antisocial work is because you need to spend much time programming. I've been always the kind of developer who likes to cut off from any sources of distraction and spend several hours on project because in this way i (as i hope) do it faster. There are also other kinds of developers, more social that can chat, read, watch movies while development and they are ok with this and don't hesitate to be interrupted in their work in any time and come back to the project without any problem. For me any distraction is source of frustration because i need to spend substantial time to load my mind with all info about the project and to concentrate back on the tasks. I always thought it's better to do this that way because project is completed faster. But it makes some things difficult: it's hard to chat with someone who needs to have some important info: because you are a bit frustrated when you know you loose your Zen. And sometimes its more important to chat with someone than to loose Zen. Well.. mostly in any other kind of work the ability to be "multitask" is very important. But as a developer and as a person it's also very important to stay social. And i see now that the problem of concentration makes it difficult to make the right chose: the cost of maintaining concentration is just sometimes so damn high! So is it only me that i have so little concentration skills so any interruption is for me a big deal? Maybe it's just i have so bad memory so that i dont remember all issues of a project so long? Or maybe i develop the project in a fashion that requires me to store so much info on my mind only to be able to start working with code? Or should i just accept that being more social will make me finish project slower and in the fashion that i personally consider non 100% productive? And it's just normal thing and i should just accept it and start to live like any other person who has many works and don't assume that programming is in any case other than any other work and i just do fuzz about the whole concentration thing? This is question for mid-pro developers. I think you was having the same dillema in your life. I would be glad if you could help me take the right road here because it's just driving me and i suppose people i work with crazy for years.

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  • How to switch from developer to dba? [on hold]

    - by lamwaiman1988
    I am working as a developer for 3 years and I am thinking of switch to dba. I do not own any certificate nor received any training regarding the daily job of dba. My company also do not offer any chance of work/training related to a dba. If I want to be a dba ( because of the salary and a much stable job than developer ), should I go to get some oracle certificates? I've also heard that you can't be a good dba if you cannot get a good understanding about the working OS such as windows/unix ( and to do that you also need to get some certificate on windows administration or unix administration ) but they recommend book of Rich Stevens over certificate. I am confused on what should I do to make this happen.

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  • What would the ultimate developer training class look like?

    - by user652273
    I think today's typical/traditional 3-5 days developer training classes aren't so great, as you tend to forget half of it shortly after. It's too much one way communication and not enough interaction. Also brain research has shown that this kind of setup is usually not optimal for efficient learning. For clarification, I am referring to professional, commercial, paid classes. However this could also be applied for any kind of studies. How could the ultimate developer training package be setup to really make sure you learn what you are supposed to learn? Would that be more: Multimedia? Exercises? Homeworks? Spread out over time instead of 3-5 compact days? Group projects?

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  • What is the increase in developer productivity while using Hibernate?

    - by Tarun Kohli
    I was curious to find out the percentage increase in developer's productivity by using Hibernate. We use both Hibernate and NHibernate extensively and find them to be extremely elegant frameworks but haven't undertaken any study to find out the time savings by using them. IMHO, one could get a good 30 to 40% jump in developer productivity as one doesn't have to write the basic CRUD operations and bother about caching. But, are there are any formal case studies which prove that point? I would really appreciate if someone could direct me to a published white paper about some statistics about the productivity gains.

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  • Is there a version of Emacs thats runs exactly the same on OSX, Windows and Linux?

    - by Zubair
    I'm using Emacs on different environments and unsure of which version to use so that they all behave the same as I hear there are differences between XEamcs, Emacs, and some other versions. Which should I use? By the way, I am not looking to start a flame war with this post, I just want a version of emacs that runs the same everywhere which is the whole point of me wanting to switch to emacs.

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  • How to see the properties of a DOM element as they change in realtime?

    - by allquixotic
    JavaScript code can update the properties/attributes of DOM elements in real time by responding to events and so on. Here is an example. In the table on that page, move your mouse over the cells. Notice how they change color when the mouse is on them, and the color goes away when you move the mouse to another cell. Now, using Firefox or Chrome (but not IE, Opera, etc.), I want to examine the background color, expressed in RGB or hex or whatever, of the cells updated in real time, as the mouse cursor enters and leaves the region and causes the JS to do its thing. The behavior that I observe, currently, is that the Inspect Element functionality of both Firefox and Chrome does not update the value of the properties as they are updated by JavaScript. So, in order to view the latest value of the property, I have to inspect the element again, and it takes a momentary "snapshot" of the values. But since the values only change while I have the mouse on them, I can't take a snapshot of the value I want while my mouse cursor is over the cell, because I have to remove my mouse from the cell to select the "Inspect Element" item in the right-click list! If it is possible to have the values updated in real time using either Firefox or Chrome, or an extension, on any recent version of the software (up to the latest stable), please provide instructions for doing so.

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  • How can I become a technical trainer from a software developer?

    - by Abhilasha
    I am a software developer; in fact a mobile application developer with 4 years of experience. I am passionate about training. I have never been an official trainer but, I have trained freshers on mobile technologies. Now how do I become a professional technical trainer. I have following questions: Do I need some kind of professional certification or degree? Is it too early for me to start as a trainer? I mean experience wise. I will not ask if it's worth it because I am very keen on pursuing training as a profession. However, if I have to be up to date with technology, I don't think I can give up coding and pursue training full time. Any pointers or guidelines would be helpful.

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  • Les pionniers de la robotique humanoïde Aldebaran proposent un Developer Program, pour aider les développeurs à donner vie à Nao

    Les pionniers de la robotique humanoïde Aldebaran proposent un Developer Program, pour aider les développeurs à donner vie à Nao Aldebaran Robotics est la première entreprise française de robotique humanoïde. Elle a vu le jour en 2005 sous l'impulsion de son fondateur, Bruno Maisonnier. Aujourd'hui, elle lance son Developer Program, qui s'adresse aux programmeurs désireux de faire avancer le projet Nao. Nao est un petit robot haut de 58 centimètres et pesant 5 kg. Il est robuste et peut chuter sans se briser, il est de plus capable de se relever. En maîtrisant sa programmation, on peut le faire marcher, danser, couper du bois, communiquer avec des enfants autistes, etc. Les applications sont quasiment infinies, mais nécessitent d...

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  • Who should get a developer certificate from Apple if client want their company name to show up in App Store

    - by doNotCheckMyBlog
    I am about start my first project with client, However I will work as a consultant. So do I need to get developer certificate and post my client's app in app store? Or I should ask my client to get the license and then I help them deploying the app on their name? They don't want company name to be my organisation but they want their company name to show up in App Store. However the developer of app is my organisation not them. How to deal with this situation?

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  • Need a developer certification… any helps?

    - by Paska
    Hi all, for my company i need to take a new certification. I'm a mobile developer, in particular iphone/ipad, but windows phone mobile (7) or android are good anyway! I don't wont only mobile... it's good enough php, c#, java, c++, anything about dev! I already have SUN Java Programmer (this). Mobile architect exist? Something like this? What are the (best/sought) existing developer certifications around the world, that i can study-take? thanks a lot!! A

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  • Sortie officielle de ASP.NET MVC 2 pour Visual Studio 2008, Visual Web Developer 2008 Express et Net

    Mise à jour du 15/03/10 Sortie officielle de ASP.NET MVC 2 Pour Visual Studio 2008, Visual Web Developer 2008 Express et Net Framework 3.5 Le mois dernier, Microsoft avait mis en ligne une Release Candidate de sa nouvelle version de ASP.NET MVC spécialement conçue pour les développeurs d'applications webs. Depuis la fin de la semaine dernière, la technologie est passé en version définitive. Elle peut être utilisée avec Visual Studio 2008 (ou Visual Web Developer 2008 Express) et Net Framework 3.5. Pour mémoire, elle est rétro-compatible avec ASP.NET MVC 1 et/ou peut-être installée side-by-side avec ce dernier. AS...

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  • Can IE Developer Tools be configured to 'see' a window that is less than full screen in size?

    - by user2795930
    I have used Developer Tools for IE for over 2 years, so I have some good experience with the tool. But the window that I need to debug now is less than a full screen in size and cannot be made larger. (Just imagine a large window that is approximately 2/3's of your full screen, but cannot be enlarged so that it is full screen). So when I try to utilize Developer Tools to debug the window, it doesn't work. It is as if Developer Tools tries to look at the full screen which is displayed behind my window that is displayed on the screen. Is there any way to make Developer Tools 'see' a window that is less than full screen in size and sits on top of another screen / web page?

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  • C++ developer looks for book(s) about Android apps & widgets (& services etc.) [on hold]

    - by Valmond
    I'm senior C++ developer, I have also programmed professionally j2me some years. I'd like to make some apps and widgets for Android and I'd like to read up a bit on this new java stuff Android is using. I have (of course) checked out some tutorials and so but it seems I miss the basics, I can compile some stuff (read: examples) in eclipse but I just don't know how to, for example, add a service or what an 'intent' is, why my widget isn't called but successfully launches the main app when clicked and so on. So, what is a really good book for someone that is a developer but mostly need the hard facts about developing something specific like Android apps & widgets? Thanks a bunch!

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  • ????????!?Oracle DBA & Developer Day 2012? ????????

    - by OTN-J Master
    ?????!DBA & Developer Day ??????????????????????????????!????????????DBA & Developer Day ???????????????????????????????????????????????????????????????????????????????????? OTN ??????????????????? ???????????????????????????????????????????????????????????????????Oracle Database Cloud Service??????????????????????????????·?????????Michael Hichwa??????Oracle OpenWorld 2012 ????????????????????????????????????Oracle Database Cloud Service???????????????????????????????????????????????????????????????????????Pluggable Database(???????????)??????????????????????????? ????2?????????6????????????24???????????????????????? Oracle Database ???????? ???????(MAA) Oracle Database ???????? BIG DATA Oracle Fusion Middleware???????? Oracle Solaris OTN ?????????????????????????????????????? – ??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? (???????????????????????)??????SPARC T4-1????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????????24?????????(??·??)??????????! ????????????????????????????????????? (????: ?????????????????????????????????????????????)  

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  • Trouble setting IE8 browser mode to IE7

    - by deostroll
    Inspite of putting the following meta tag I am not getting the expected result: <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" > I open the developer tool window. In the same bar where the menu appears there is an item called Browser Mode: it still shows IE 8 by default. Even doing document.documentMode in the console window shows "8". Am I doing anything wrong?

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  • Online interview quiz

    - by Deano
    I am currently interviewing for a developer role in my company and I have had a lot of poor candidates come in so far. One of the things we have discussed is providing an online test for the candidates to fill in. Has anyone ever used an online service like this? Even if the service charges a fee that is not a problem. I would prefer if the candidates quiz results were confidential.

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  • update SQl table from values in excel

    - by user175084
    I am using the SQL Developer or SQl express. How do i get the values from an excel sheet and update those in a column of my database... Please help thanks. i have this and im running it but i get error: SELECT * FROM OPENROWSET('Microsoft.Jet.OLEDB.4.0', 'Excel 8.0;Database=C:\books.xls', 'SELECT * FROM [Sheet1$]') i get error now OLE DB provider "Microsoft.Jet.OLEDB.4.0" for linked server "(null)" returned message "Could not find installable ISAM.". thanks

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  • asp.net: Where can I put my source files.

    - by David Sykes
    I am developing a web form using Visual Web Developer Currently I have class source files in the same directory as the web form, or in the App_Code folder. I'd like to organise the files into folders within the web form folder, but I can't find a way of adding a reference to the folders, and they don't seem to be being picked up automatically. These are files that are under constant development. What is the asp.net/c#'s equivalent concept to c++'s #include?

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  • jQuery attribute auto added to elements

    - by macca1
    After using the IE8 built in Developers Tools for the first time, I noticed jQuery is attaching an attribute to some of my elements: I've never noticed this before. In fact, this doesn't show up in Firebug... I'm only seeing it for the first time now in IE8 Developer Tools. Does anyone know what jQuery uses this for, and why it's hidden in firebug?

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  • How many developers are there in the world?

    - by Nick Hodges
    What is the total number of software developers in the world? And to respond to the inevitable "How do you define a software developer?" -- I'll answer two ways: Define it as "Anyone who writes code to make a computer do something he wants done". Define it however you like and then answer the question References to studies or more authoritative sources of information would be greatly appreciated.

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  • what is the best developre toolbar for IE?

    - by hd
    i use 'FireBug' extension of FF to debug designed webpages and installed 'IE Developer Toolbar' for IE to get this purpose, but it is not as well as FireBug. it is difficult to work with it. is there any other extension for IE that is more user friendly and easy to use??

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  • XCTest.framework build error

    - by user2703123
    I am using the DropBox Core API in my app and therefore, I must include the XCTest framework, because, when I haven't added the XCTest framework, my app can't connect to dropbox, however when I do add the framework, I get an error while building for the simulator. There is nothing wrong with my code! Here is the error: Ld /Users/Zach/Library/Developer/Xcode/DerivedData/SnapDrop!-fchnxyvnqyeefscfhmohrzxtiqeb/Build/Products/Debug-iphonesimulator/SnapDrop!.app/SnapDrop! normal i386 cd "/Users/Zach/Desktop/SnapDrop!" setenv IPHONEOS_DEPLOYMENT_TARGET 6.1 setenv PATH "/Applications/Xcode5-DP6.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode5-DP6.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /Applications/Xcode5-DP6.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch i386 -isysroot /Applications/Xcode5-DP6.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.0.sdk -L/Users/Zach/Library/Developer/Xcode/DerivedData/SnapDrop!-fchnxyvnqyeefscfhmohrzxtiqeb/Build/Products/Debug-iphonesimulator -F/Users/Zach/Library/Developer/Xcode/DerivedData/SnapDrop!-fchnxyvnqyeefscfhmohrzxtiqeb/Build/Products/Debug-iphonesimulator -F/Users/Zach/Downloads/dropbox-ios-sdk-1.3.5 -F/Users/Zach/Downloads/dropbox-ios-sync-sdk-1-1.1.0 -F/Applications/Xcode5-DP6.app/Contents/Developer/Library/Frameworks -F/Users/Zach/Desktop -filelist /Users/Zach/Library/Developer/Xcode/DerivedData/SnapDrop!-fchnxyvnqyeefscfhmohrzxtiqeb/Build/Intermediates/SnapDrop!.build/Debug-iphonesimulator/SnapDrop!.build/Objects-normal/i386/SnapDrop!.LinkFileList -Xlinker -objc_abi_version -Xlinker 2 -fobjc-arc -fobjc-link-runtime -Xlinker -no_implicit_dylibs -mios-simulator-version-min=6.1 -framework iAd -framework AssetsLibrary -framework QuartzCore -framework SystemConfiguration -framework Security -framework CFNetwork -framework XCTest -framework Dropbox -framework DropboxSDK -framework CoreGraphics -framework UIKit -framework Foundation -Xlinker -dependency_info -Xlinker /Users/Zach/Library/Developer/Xcode/DerivedData/SnapDrop!-fchnxyvnqyeefscfhmohrzxtiqeb/Build/Intermediates/SnapDrop!.build/Debug-iphonesimulator/SnapDrop!.build/Objects-normal/i386/SnapDrop!_dependency_info.dat -o /Users/Zach/Library/Developer/Xcode/DerivedData/SnapDrop!-fchnxyvnqyeefscfhmohrzxtiqeb/Build/Products/Debug-iphonesimulator/SnapDrop!.app/SnapDrop! ld: building for iOS Simulator, but linking against dylib built for MacOSX file '/Applications/Xcode5-DP6.app/Contents/Developer/Library/Frameworks/XCTest.framework/XCTest' for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation) What should I do? If my framework is corrupt, can you tell me how to reinstall it? I have tried deleting and reinstalling Xcode with no luck.

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