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  • Understanding the static keyword

    - by user985482
    I have some experience in developing with Java, Javascript and PHP. I am reading Microsoft Visual C# 2010 Step by Step which I feel it is a very good book on introducing you to the C# language. I seem to be having problems in understanding the static keyword. From what I understand this far if a class is declared static all methods and variable have to be static. The main method always is a static method so in the class that the main method exists all variables and methods are declared static if you have to call them in the main method. Also I have noticed that in order to call a static method from another class you do not need to create an object of that you can use the class name. What are the advantages of declaring static variables and methods? When should I declare static variable and methods?

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  • 'Important security update' for Firefox and flash plugin, but the update cannot be selected

    - by geoffrey
    [This question has been updated as I now have the same problem with Firefox in addition to flash plugin] The update manager (on Ubuntu 12.04, 64bit) shows an 'important security update' for flashplugin-installer:i386, firefox, and firefox-globalmenu. The update is unticked, and cannot be selected, and therefore cannot be updated (I can update other packages without problems). Actually the flashplugin-installer package does not appear to be installed on my computer (judging from the Software Centre). I can't remember how I installed flash, probably directly from the Adobe website. The updater asks me if I want to do a partial upgrade. When running sudo apt-get update && sudo apt-get upgrade from terminal, I get the following: The following packages have been kept back: firefox firefox-globalmenu flashplugin-installer:i386

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  • Upgrading in java web development

    - by Vladimir Ivanov
    I'm a java web developer for nearly 3 years. Always trying to learn more and be better but still I feel that the amount of knowledge is not that good as I want. The knowledge in some places still seems to be non-systematic and don't provide a very strong base to solve the problems as good as I want to do it. The example I have is my senior developer, whose solutions are always more efficient and beautiful. So, the question is rather simple and hard the same time. What is the right way to get my knowlege be more systematic and therefore improve it's quality. I understand that there is no practically good answer for the all java programming, so let's focus on the modern java web or nearly web technologies: JSF 2.0 JPA2 and Hibernate as persistence provider Web services and Java SE as a core. What methodologies or books or learning technics lead to the strong knowledge base within the given knowledge area?

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  • Gartner PCC Summit, Baltimore - Oracle's Take

    - by [email protected]
    Back from last week's trip to the Gartner PCC Summit in Baltimore, Andy MacMillan and Ajay Gandhi share their impressions of the conference. According to Andy and Ajay: Interest in the sector is increasing - attendance at this year's conference was up by more than 50 percent The discussion at the conference this year shifted from a focus on what the tools are to how the tools can transform organizations and help build businesses Conference attendees were interested in taking a platform approach and looking to bring multiple tools together to solve problems and simplify business processes. If you are interested in learning more about the Bureau of Indian Affairs' deployment showcased in Ajay's session at the Gartner PCC Summit, come back soon - a detailed post is on its way.

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  • External display, windows are moving to external display

    - by hextler
    I use external display with lenovo w520, I am running it with following script xrandr --output LVDS1 --auto --primary --output VIRTUAL --mode 1920x1200 --left-of LVDS1 optirun screenclone -d :8 -x 1 xrandr --output VIRTUAL --off but I have number of problems. All windows are moving on external display If I interrupt this script I cannot run it second time without restarting xorg. yakuake is changing height and does not showing tabs. I cannot make external display primary, in that case I cannot see windows. yakuake is changing height and does not showing tabs. If you know how to solve thisw issues please let me know. Thanks in advance!

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  • Single click handler for all buttons in Javascript? Is it a pattern? Whats the benefit?

    - by Hasan Khan
    I have been told that when there are multiple buttons on the page for same purpose but targeting different item e.g. delete item on a grid of items, they say it is recommended to just register for click handler only on the top most element like 'body' and check what was clicked instead of hooking up click with every delete button. Whats the benefit of this? Creating more handlers causes problems? Is it an optimization of some sort? Is it a pattern? Does it have anything to do with performance? Where can I read more about it?

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  • Cannot install eclipse due to broken packages

    - by Achim
    Trying to install eclipse, I get the following error: XXX:~$ sudo apt-get install eclipse Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: eclipse : Depends: eclipse-jdt (>= 3.8.0~rc4-1ubuntu1) but it is not going to be installed Depends: eclipse-pde (>= 3.8.0~rc4-1ubuntu1) but it is not going to be installed E: Unable to correct problems, you have held broken packages. I have no idea how to solve it. I'm quite new to Ubuntu, but I don't think that I'm using a unstable distribution. But I have added the repository which is required to install Tomcat7. Could that cause the problem?

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  • How do I install an older 2.6.37 Kernel Version?

    - by Seyed Mohammad
    I have a Sony VAIO P netbook and for several issues (graphics driver, audio driver and power management), I want to install an older version of the Linux kernel on Ubuntu 11.10 (actually its Xubuntu) that seems to be much more suitable. So I searched for Ubuntu kernels and found this link which includes all versions of the Linux kernel distributed by Ubuntu. I am looking for a version before 2.6.38 (to escape the known power management issue) and of course solve my many driver problems! I guess my best bet is 2.6.37 but there are several 2.6.37.x-x kernels! Can someone point me to the right choice? In each folder (for example: this one) there are several DEB packages. Which packages should I install? (Note: I have a 32-bit system) What is the installation process? sudo dpkg -i *.deb ? Is this fine or additional steps are required? Thanks.

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  • How to make Eclipse CDT's Linux GCC toolchain resolve C++ standard library headers?

    - by Muhammad Khan
    In Ubuntu 12.04 LTS I installed the Eclipse CDT plugin and opened the new hello world project to just test everything out. When I was creating the project, I chose the only toolchain: "Linux GCC" When the project is created, however, it says that #include<iostream> #include<cstdlb> are unresolved. Thus, lines with cout and endl can't be used and it cannot find std. using namespace std; is also causing problems. How can I get my #include directives for standard library headers recognized, to support code using the std namespace?

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  • The Best Websites for Downloading Cool Wallpapers

    - by Lori Kaufman
    Getting bored with your desktop wallpaper or the wallpaper on your mobile device? Because we use our PCs and mobile devices so much, it’s nice to have a choice of cool backgrounds to look at. We’ve collected links to some sites where you can download wallpapers for your PC or your phone. Not all the wallpapers are free, but there are plenty of free ones to provide a variety of cool backgrounds. HTG Explains: What is the Windows Page File and Should You Disable It? How To Get a Better Wireless Signal and Reduce Wireless Network Interference How To Troubleshoot Internet Connection Problems

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  • Making a bash script that reconnect to AP when connection lost

    - by Alexander
    I'm facing problems with WIFI on ubuntu i tried to update the system but still the same what happens is that i suddenly lose the connection with my router and when i press on the WIFI bar the system won't detect any APs i have to uncheck "enable WIFI" option ,then re check it so it work,it automatically reconnect. I'm thinking of making a bash script that detects when the pc is disconnected from the router for any reason, and when it is disconnected it disable then enable the wifi. i mean like automating resetting the connection that possible ? i guess i must use this nmcli nm wifi off nmcli nm wifi on but how can i make the script know if the PC is disconnected from the WIFI ?

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  • What are the major challenges in creating a platform such as StackOverflow?

    - by gablin
    Let us assume you were to create a platform such as StackOverflow. It needs to be functional, fast and scalable, just like SO, in order to be successful. What are the major challenges you would face in such a task? I'm looking for technical challenges rather than problems such as how to advertise it and stuff like that. (I'm not looking for ways of creating a new site to challenge SO; I'm just interested in how difficult it would be to create it if it didn't already exist.)

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  • ORACLE RIGHTNOW DYNAMIC AGENT DESKTOP CLOUD SERVICE - Putting the Dynamite into Dynamic Agent Desktop

    - by Andreea Vaduva
    Untitled Document There’s a mountain of evidence to prove that a great contact centre experience results in happy, profitable and loyal customers. The very best Contact Centres are those with high first contact resolution, customer satisfaction and agent productivity. But how many companies really believe they are the best? And how many believe that they can be? We know that with the right tools, companies can aspire to greatness – and achieve it. Core to this is ensuring their agents have the best tools that give them the right information at the right time, so they can focus on the customer and provide a personalised, professional and efficient service. Today there are multiple channels through which customers can communicate with you; phone, web, chat, social to name a few but regardless of how they communicate, customers expect a seamless, quality experience. Most contact centre agents need to switch between lots of different systems to locate the right information. This hampers their productivity, frustrates both the agent and the customer and increases call handling times. With this in mind, Oracle RightNow has designed and refined a suite of add-ins to optimize the Agent Desktop. Each is designed to simplify and adapt the agent experience for any given situation and unify the customer experience across your media channels. Let’s take a brief look at some of the most useful tools available and see how they make a difference. Contextual Workspaces: The screen where agents do their job. Agents don’t want to be slowed down by busy screens, scrolling through endless tabs or links to find what they’re looking for. They want quick, accurate and easy. Contextual Workspaces are fully configurable and through workspace rules apply if, then, else logic to display only the information the agent needs for the issue at hand . Assigned at the Profile level, different levels of agent, from a novice to the most experienced, get a screen that is relevant to their role and responsibilities and ensures their job is done quickly and efficiently the first time round. Agent Scripting: Sometimes, agents need to deliver difficult or sensitive messages while maximising the opportunity to cross-sell and up-sell. After all, contact centres are now increasingly viewed as revenue generators. Containing sophisticated branching logic, scripting helps agents to capture the right level of information and guides the agent step by step, ensuring no mistakes, inconsistencies or missed opportunities. Guided Assistance: This is typically used to solve common troubleshooting issues, displaying a series of question and answer sets in a decision-tree structure. This means agents avoid having to bookmark favourites or rely on written notes. Agents find particular value in these guides - to quickly craft chat and email responses. What’s more, by publishing guides in answers on support pages customers, can resolve issues themselves, without needing to contact your agents. And b ecause it can also accelerate agent ramp-up time, it ensures that even novice agents can solve customer problems like an expert. Desktop Workflow: Take a step back and look at the full customer interaction of your agents. It probably spans multiple systems and multiple tasks. With Desktop Workflows you control the design workflows that span the full customer interaction from start to finish. As sequences of decisions and actions, workflows are unique in that they can create or modify different records and provide automation behind the scenes. This means your agents can save time and provide better quality of service by having the tools they need and the relevant information as required. And doing this boosts satisfaction among your customers, your agents and you – so win, win, win! I have highlighted above some of the tools which can be used to optimise the desktop; however, this is by no means an exhaustive list. In approaching your design, it’s important to understand why and how your customers contact you in the first place. Once you have this list of “whys” and “hows”, you can design effective policies and procedures to handle each category of problem, and then implement the right agent desktop user interface to support them. This will avoid duplication and wasted effort. Five Top Tips to take away: Start by working out “why” and “how” customers are contacting you. Implement a clean and relevant agent desktop to support your agents. If your workspaces are getting complicated consider using Desktop Workflow to streamline the interaction. Enhance your Knowledgebase with Guides. Agents can access them proactively and can be published on your web pages for customers to help themselves. Script any complex, critical or sensitive interactions to ensure consistency and accuracy. Desktop optimization is an ongoing process so continue to monitor and incorporate feedback from your agents and your customers to keep your Contact Centre successful.   Want to learn more? Having attending the 3-day Oracle RightNow Customer Service Administration class your next step is to attend the Oracle RightNow Customer Portal Design and 2-day Dynamic Agent Desktop Administration class. Here you’ll learn not only how to leverage the Agent Desktop tools but also how to optimise your self-service pages to enhance your customers’ web experience.   Useful resources: Review the Best Practice Guide Review the tune-up guide   About the Author: Angela Chandler joined Oracle University as a Senior Instructor through the RightNow Customer Experience Acquisition. Her other areas of expertise include Business Intelligence and Knowledge Management.  She currently delivers the following Oracle RightNow courses in the classroom and as a Live Virtual Class: RightNow Customer Service Administration (3 days) RightNow Customer Portal Design and Dynamic Agent Desktop Administration (2 days) RightNow Analytics (2 days) Rightnow Chat Cloud Service Administration (2 days)

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  • Cannot boot from SD card/flash drive on Macbook Pro 13" - boot fails after purple screen

    - by user3512567
    It's my first time using Ubuntu and I have run into some problems. I have a 16GB USB Flash drive and 16GB SDHC Card. I would prefer to use the SD card but either will do just fine if it helps with the solution. I Have a 13" Macbook Pro with no hard drive deeming the machine useless without an OS. I thought I could substitute the hard drive for a 16GB SD card with an Ubuntu ISO on it. I would like to plug in my SD card into my Macbook Pro, boot the Ubuntu ISO and do simple things such as use the browser for internet. The Problem: Whenever I boot my Macbook pro with the SD card that has the Ubuntu ISO, it loads at the purple logo screen and does not function. How can I resolve this issue?

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  • Is running "milli"-benchmarks a good idea?

    - by Konstantin Weitz
    I just came across the Caliper project and it looks very nice. Reading the introduction to microbenchmarks, one gets the feeling that the developers would not suggest to use the framework if the benchmark takes longer than a second or so. I looked at the code and it looks like a RuntimeOutOfRangeException is actually thrown if a scenario takes longer than 10s to execute. Could you explain to me what the problems are with running larger benchmarks? My motivation for using Caliper was to compare two join-algorithm implementations. Those will definitely run for quite some time and will do some disk IO, yet running the entire database would make it hard to do the comparison, because the configuration of the algorithms and the visualization of the results would be a pain.

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  • Why does the word "Pythonic" exist?

    - by Billy ONeal
    Honestly, I hate the word "Pythonic" -- it's used as a simple synonym of "good" in many circles, and I think that's pretentious. Those who use it are silently saying that good code cannot be written in a language other than Python. Not saying Python is a bad language, but it's certainly not the "end all be all language to solve ALL of everyone's problems forever!" (Because that language does not exist). What it seems like people who use this word really mean is "idiomatic" rather than "Pythonic" -- and of course the word "idiomatic" already exists. Therefore I wonder: Why does the word "Pythonic" exist?

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  • Project Euler 15: (Iron)Python

    - by Ben Griswold
    In my attempt to learn (Iron)Python out in the open, here’s my solution for Project Euler Problem 15.  As always, any feedback is welcome. # Euler 15 # http://projecteuler.net/index.php?section=problems&id=15 # Starting in the top left corner of a 2x2 grid, there # are 6 routes (without backtracking) to the bottom right # corner. How many routes are their in a 20x20 grid? import time start = time.time() def factorial(n): if n == 0: return 1 else: return n * factorial(n-1) rows, cols = 20, 20 print factorial(rows+cols) / (factorial(rows) * factorial(cols)) print "Elapsed Time:", (time.time() - start) * 1000, "millisecs" a=raw_input('Press return to continue')

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  • How to use IBM T42 laptop's built-in Bluetooth?

    - by B. Roland
    Hello! I have an IBM ThinkPad T42 laptop, and I have some troubles with built-in bluetooth, because in Hardware Drivers, there are no drivers for it, and in Bluetooth settings, it shows, that it has no BT devices. If I plug in an USB Bluetooth adapter, I can use easily Wammu for my mobile backup. I have no setting in BIOS, to enable, or disable it(if disable wireless refers to Wi-fi, but it is enabled too). Some outputs, what the community asked from me, in the IRC: $ sudo hcitool dev Devices: $ $ cat /proc/acpi/ibm/bluetooth No file or dir $ $ sudo modprobe bluetooth $ $ rfkill list 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no $ But they couldn't solve my problems. What can I do?

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  • Programming Test

    - by Travis Webb
    We are looking to hire some more Java developers onto our team, and plan to test their coding abilities with a test. We currently use a web-based Java test that automatically compiles and runs the code, but it is very flaky and we're having problems with our candidates losing their work on this site. Not only is this frustrating for everyone, it makes us look like we don't know what we're doing. Is there a popular testing suite out there? What do you use? I'm not interested in dogmatic arguments on whether or not I should be testing my candidates in this way, I'm looking for a tool that will help me do it.

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  • Do you develop with security in mind?

    - by MattyD
    I was listening to a podcast on Security Now and they mentioned about how a lot of the of the security problems found in Flash were because when flash was first developed it wasdn't built with security in mind because it didn't need to thus flash has major security flaws in its design etc. I know best practices state that you should build secure first etc. Some people or companies don't always follow 'best practice'... My question is do you develop to be secure or do you build with all the desired functionality etc then alter the code to be secure (Whatever the project maybe) (I realise that this question could be a possible duplicate of Do you actively think about security when coding? but it is different in the fact of actually process of building the software/application and design of said software/application)

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  • Project Euler 9: (Iron)Python

    - by Ben Griswold
    In my attempt to learn (Iron)Python out in the open, here’s my solution for Project Euler Problem 9.  As always, any feedback is welcome. # Euler 9 # http://projecteuler.net/index.php?section=problems&id=9 # A Pythagorean triplet is a set of three natural numbers, # a b c, for which, # a2 + b2 = c2 # For example, 32 + 42 = 9 + 16 = 25 = 52. # There exists exactly one Pythagorean triplet for which # a + b + c = 1000. Find the product abc. import time start = time.time() product = 0 def pythagorean_triplet(): for a in range(1,501): for b in xrange(a+1,501): c = 1000 - a - b if (a*a + b*b == c*c): return a*b*c print pythagorean_triplet() print "Elapsed Time:", (time.time() - start) * 1000, "millisecs" a=raw_input('Press return to continue')

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  • Problem with Numlock light and remapping keyboard

    - by ansidev
    I upgraded to Ubuntu 13.10. And there are two problem: Numlock is on. But after I press Ctrl+Space (hotkey for IBus, (default in 13.10 is Super+Space)), Numlock is off and I must press Numlock button twice to enable Numlock. About remapping keyboard, because my keyboard have some broken key, so I am using xmodmap to remap my keyboard (config file for xmodmap is $HOME/.xmodmap). But when I switch keyboard layout (I mentioned above), everything changed to default, and I must run xmodmap .xmodmap to remap keyboard again. When using Ubuntu 13.04, everything is good. How to solve my problems? UPDATE: 1. I am using two keyboard layout: English (US) and Unikey (from ibus-unikey package). 2. If I change key board layout using menu on Unity panel, no first problem.

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  • Tears of Steel [Short Movie]

    - by Asian Angel
    In the future a young couple reach a parting of the ways because the young man can not handle the fact that she has a robotic arm. The bitterness of the break-up and bad treatment from her fellow humans lead to a dark future 40 years later where robots are relentlessly hunting and killing humans. Can the man who started her down this dark path redeem himself and save her or will it all end in ruin? TEARS OF STEEL – DOWNLOAD & WATCH [Original Blog Post & Download Links] Tears of Steel – Blender Foundation’s fourth short Open Movie [via I Love Ubuntu] HTG Explains: What is the Windows Page File and Should You Disable It? How To Get a Better Wireless Signal and Reduce Wireless Network Interference How To Troubleshoot Internet Connection Problems

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  • Database .NET

    - by Guilherme Cardoso
    Database .NET is an awesome tool that allow us manage several database in simultaneous (SQL Server, MySQL, Oracle, etc). What lead me to install this tool was an problem that must be shared by must developers. Tools like SQL Server Management Studio consume to many resources, and if you don't have a decent computer you'll get problems in performance, and that's my case! With Database .NET we can access an SQL Server for example, and make several actions to database (crud operations, manage procedures, etc).Of course that this tool can replace the use of SQL Server Management Studio for example!  But it's really usefull if  you just need to perform small operations because it consumes many fewer resources. This tool don't need to be installed (it can be used as an portable application). One tip: if you are using SQL Server Express for example, don't forget to check the server name in Database .NET connection. In my case i've to change from GUILHERM-196634 to GUILHERM-196634\SQLExpress. Project: http://fishcodelib.com/Database.htm Download: http://fishcodelib.com/files/DatabaseNet3.zip

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  • mp3 codecs cannot be installed no software is actually installing

    - by joseph michore
    My Rythm box player cannot play mp3 and iget this error "GStreamer extra plugins cannot be installed on your computer type (i386) Either the application requires special hardware features or the vendor decided to not support your computer type" if i go to software center i get this error The repository may no longer be available or could not be contacted because of network problems. If available an older version of the failed index will be used. Otherwise the repository will be ignored. Check your network connection and ensure the repository address in the preferences is correct. in shot i have tried to dowload deb softs i still get the error above .so i have downloaded tar.gz and i have installed using terminal but i get another error of gcc c++ insanity check failure! i ask my self what i am supposed to do nothing is working nothing at all yet i have to run my bussiness help urgently before i collapse and choose to die!

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