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• Single quotes vs double quotes

  - by Eric Hydrick

  I just started a job where I'm writing Python after coming from a Java background, and I'm noticing that other developers tend to quote strings using single quotes ('') instead of double quotes (""). For example: line1 = 'This is how strings typically look.' line2 = "Not like this." Is there a particular reason for this other than personal preference? Is this the proper way to be quoting strings?

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• Double Buffering in Panda3D (C++)

  - by jsvcycling

  How would I go about using Double Buffering (to create a loading screen) in Panda3D using C++? I've searched Google and found some forums that talk about the concept of swapping buffers, but I haven't seen any that show any type of source code (specifically Panda3D/C++). I'd like to try and stay away from using pure OpenGL code and work it through Panda3D, but if I have no other choice, then I'll have to go with OpenGL coding.

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• xfce4 - 'Run Program' dialogue box does not appear when double clicking script

  - by Ron Paulfan

  Ubuntu 12.04 Xfce4 On my previous Ubuntu distro, when I double clicked scripts I got a little dialogue window that asked me if I wanted to run the script as a program or run it in terminal. Similar to this window: Since upgrading, I have never seen that window. I have ensured that the option to 'Allow executing as a program is enabled' and the script works if I run it through terminal. I simply just don't get the prompt. Any ideas?

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• PHP For Beginners - Single Or Double Quotes

  There is a difference between single and double quotes when it comes to PHP. PHP handles them quite differently, as you will learn in this article.

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• Normal Redundancy (Double Mirroring) Option Available

  - by TammyBednar

  Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Calibri","sans-serif";} The Oracle Database Appliance 2.4 Patch was released last week and provides you an option of ASM normal redundancy (double mirroring) during the initial deployment of the Database Appliance. The default deployment of the Oracle Database Appliance is high redundancy for the +DATA and +RECO disk groups. While there is 12TB of raw shared storage available, the Database Backup Location and Disk Group Redundancy govern how much usable storage is presented after the initial deployment is completed. The Database Backup Location options are Local or External. When the Local Backup Option is selected, this means that 60% of the available shared storage will be allocated for the Fast Recovery Area that contains database backups and archive logs. The External Backup Option will allocate 20% of the available shared storage to the Fast Recovery Area. So, let’s look at an example of High Redundancy and External Backups. Disk Group Redundancy – High --> Triple Mirroring to provide ~4TB of available storage Database Backup Location – External --> 20% of available shared storage allocated to +RECO +DATA = 3.2TB of usable storage, +RECO = 0.8TB of usable storage What about Normal Redundancy with External Backups? Disk Group Redundancy – Normal --> Double Mirroring to provide ~6TB of available storage Database Backup Location – External --> 20% of available shared storage allocated to +RECO +DATA = 4.8TB of usable storage, +RECO = 1.2TB of usable storage As a best practice, we would recommend using Normal Redundancy for your test and/or development Oracle Database Appliances and High Redundancy for production.

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• Trial/Free & Full Version VS. Free App + In-app billing?

  - by SERPRO

  I'm just wondering what would be the best strategy to publish an application on the Android Market. If you have a free and paid version you have two codes to update (I know it will be 99% the same but still) and besides all the popular paid apps are quite easy to find for "free" in "alternative" markets. Also if you have any stored data in the trial/free version you lose it when you buy the full version.. On the other hand if you put a free application but inside you allow the user to unlock options (remove ads/more settings/etc...) you only have to worry about one code. I don't know the drawbacks of that strategy and how easy/hard is to hack that to get all the options for "free".

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• Dectect ASCII codes for asian double byte / cyrillic character sets?

  - by jfroom

  Is it possible to detect if an ascii character belongs to Asian double byte or Cyrillic character sets? Perhaps specific code ranges? I've googled, but not finding anything at first glance. There's an RSS feed I'm tapping into that has the locale set as 'en-gb'. But there are some Asian double byte characters in the feed itself - which I need to handle differently. Just not sure how to detect it since the meta locale data is incorrect. I do not have access to correct the public feed.

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• Has anyone noticed that a WPF file dialog will pass a click through to the UI when double clicking t

  - by Ben

  I have some buttons on my WPF UI and I also need to choose files from time to time. I kept noticing strange problems where when I double-click an item in the file dialog, a button on the main UI would also get clicked. After experimenting, it seems that if you line up an item in the file dialog with a button behind it on the main UI and double click to select the file, it will single-click the button behind it as well. Has anyone else noticed this, or is it just a freak bug with the way I have my UI laid out?

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• Has anyone noticed that a WPF file dialog will pass through a click to the UI when double clicking t

  - by Ben

  I have some buttons on my WPF UI and I also need to choose files from time to time. I kept noticing strange problems where when I double-click an item in the file dialog, a button on the main UI would also get clicked. After experimenting, it seems that if you line up an item in the file dialog with a button behind it on the main UI and double click to select the file, it will single-click the button behind it as well. Has anyone else noticed this, or is it just a freak bug with the way I have my UI laid out?

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• Why do MSTests Assert.AreEqual(1.0, double.NaN, 0.0) pass?

  - by Egil Hansen

  Short question, why do Assert.AreEqual(1.0, double.NaN, 0.0) pass when Assert.AreEqual(1.0, double.NaN) do not? Is it an error in MSTest or am I missing something here? Best regards, Egil. Update: Should probably add, that the reason behind my question is, that I have a bunch of unit tests that unfortunately passed due to the result of some linear algebraic matrix operation being NaN or (+/-)Infinity. The unit tests are fine, but since Assert.AreEqual on doubles with a delta will pass when actual or/and expected are NaN or Infinity, I was left to believe that the code I was testing was correct.

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• how to control textbox type to double in visual basic?

  - by fema

  Hi, I'd like to make a textbox that accepts only numbers, but not integer, but rather double. I've read here about e.Handled = Not Char.IsDigit(e.KeyChar) and it works, but again, it can be used only for integer, since it declines decimal point. Another thing I've read here is If Not Double.TryParse(TextBox2.Text, value) Then .... and it would work fine, except that it allows only decimal comma instead of point. I don't know whether it's because of my location settings (Hungary, we use commas instead of points), but I don't have any other idea how to solve my problem, and the SQL server I send my data uses decimal point. Thanks in advance.

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• Download Free Norton Antivirus 2012 with 6 months subscription

  - by Gopinath

  Norton, one of the most popular antivirus software Antivirus is now available as a free download with 6 months of subscription. Thanks to Facebook for teaming up with Symantec and providing Norton Antivirus 2012 for free to all its users. To grab your copy of Free antivirus, point your browser to http://us.norton.com/ps/loem/EN/Facebook/index.html and click on the download link. Without asking for any personal details or registration the download starts and you can follow the on screen instructions to install the antivirus. The antivirus is compatible with Windows PC and MAC OS. I tried installing on Windows 7 and the installation process started without any issues. But on Windows 8, the installer stopped after verifying the system requirements. The special offer also extends to Norton 360  which is available 50% discounted price. The original price for 1 year subscription of Norton 360 is around $90 and for Facebook users it’s available at $44.99. Update: Facebook is in partnership with many other antivirus vendors and providing antivirus software for free of cost. The other products are available for 6 months or more free subscription are: McAfee, Sophos Antivirus, Trend Micro. Please visit Facebook Security AV Market place for more details. Related: 5 Free Antivirus Applications For Windows

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• SQLAuthority News – 2 New Books – FREE Books and Book Signing at #SQLPASS 2012

  - by pinaldave

  As an author the most interesting task is to participate in Book Signing Events. If you are at SQLPASS – we are going to have a lot of book signing events. Here is the good news! MY NEW BOOKS ARE OUT! SQL 2012 Functions Limited Edition Click to Expand This book is a very special edition book. Our current plans is to run this book for the limited edition. You can avail this book from Amazon and it will soon come to India. Join following book signing events where you will get this book for free. Wednesday, November 7, 2012 7pm-8pm - Embarcadero Booth Book Signing (FREE BOOK) Thursday, November 8, 2012 12pm-1pm - Embarcadero Booth Book Signing (FREE BOOK) SQL Queries 2012 Joes 2 Pros Volume1 Click to Expand This is my first book this year which will be available in bookstores. Last Year I published 3 books and this year this is my first book. This book is available on Amazon over here and it will come to India very soon. Join following book signing events where you will get this book for free. Wednesday, November 7, 2012 12pm-1pm – Book Signing at Exhibit Hall Joes Pros booth#117 (FREE BOOK) If you are attending SQLPASS you may get this book’s Autographed Special Edition for FREE if you attend following book signing events. Rest all the time – I will be at Exhibition Hall Joes 2 Pros Booth #117. Stop by for the goodies! Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Joes 2 Pros, PostADay, SQL, SQL Authority, SQL PASS, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Book Review, SQLAuthority News, SQLServer, T SQL, Technology

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• 36 Hour Free Offer: jQuery Fundamentals Training

  - by ScottGu

  Pluralsight (a great .NET training company) is offering the opportunity to watch their jQuery Fundamentals course for free for the next 36 hours. The course is presented by the most excellent Dan Wahlin and contains 5 hours of great end to end content.  Pluralsight will be offering this jQuery Fundamentals course for free until Thursday evening (9pm PST). Pluralsight has about 100 other great training courses available similar to this one.  They recently launched a new subscription plan that allows you to watch all of their courses online starting from $29 a month.  They also offer a 10 day free trial option that you can use to try it out.  You can learn more about it here. Free jQuery 1.5 Visual Cheat Sheet While on the topic of jQuery, I wanted to link to one other useful resource to download if you are using jQuery – which is a free jQuery PDF “cheat sheet” for the jQuery 1.5 APIs. You can download it for free here. Hope this helps, Scott P.S. I am also now using Twitter for quick updates and to share links. Follow me at: twitter.com/scottgu

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• WebLogic 12c hands-on bootcamps for partners – free of charge

  - by swalker

  For all WebLogic Partner Community members we offer our WebLogic 12c hands-on Bootcamps – free of charge! If you want to become an Application Grid Specialized: Register Here! Country Date Location Registration Germany 3-5 April 2012 Oracle Düsseldorf Click here France 24-26 April 2012 Oracle Colombes Click here Spain 08-10 May 2012 Oracle Madrid Click here Netherlands 22-24 May 2012 Oracle Amsterdam Click here United Kingdom 06-08 June 2012 Oracle Reading Click here Italy 19-21 June 2012 Oracle Cinisello Balsamo Click here Portugal 10-12 July 2012 Oracle Lisbon Click here Skill requirements Attendees need to have the following skills as this is required by the product-set and to make sure they get the most out of the training: Basic knowledge in Java and JavaEE Understanding the Application Server concept Basic knowledge in older releases of WebLogic Server would be beneficial Member of WebLogic Partner Community for registration please vist http://www.oracle.com/partners/goto/wls-emea Hardware requirements Every participant works on his own notebook. The minimal hardware requirements are: 4Gb physical RAM (we will boot the image with 2Gb RAM) dual core CPU 15 GB HDD Software requirements Please install Oracle VM VirtualBox 4.1.8 Follow-up and certification With the workshop registration you agree to the following next steps Follow-up training attend and pass the Oracle Application Grid Certified Implementation Specialist Registration For details and registration please visit Register Here Free WebLogic Certification (Free assessment voucher to become certified) For all WebLogic experts, we offer free vouchers worth $195 for the Oracle Application Grid Certified Implementation Specialist assessment. To demonstrate your WebLogic knowledge you first have to pass the free online assessment Oracle Application Grid PreSales Specialist. For free vouchers, please send an e-mail with the screenshot of your Oracle Application Grid PreSales certirficate to [email protected] including your Name, Company, E-mail and Country. Note: This offer is limited to partners from Europe Middle East and Africa. Partners from other countries please contact your Oracle partner manager. WebLogic Specialization To become specialized in Application Grid, please make sure that you access the: Application Grid Specialization Guide Application Grid Specialization Checklist If you have any questions please contact the Oracle Partner Business Center. WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea (OPN account required). If you need support with your account please contact the Oracle Partner Business Center.

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• Minimum percentage of free physical memory that Linux require for optimal performance

  - by csoto

  Recently, we have been getting questions about this percentage of free physical memory that OS require for optimal performance, mainly applicable to physical compute nodes. Under normal conditions you may see that at the nodes without any application running the OS take (for example) between 24 and 25 GB of memory. The Linux system reports the free memory in a different way, and most of those 25gbs (of the example) are available for user processes. IE: Mem: 99191652k total, 23785732k used, 75405920k free, 173320k buffers The MOS Doc Id. 233753.1 - "Analyzing Data Provided by '/proc/meminfo'" - explains it (section 4 - "Final Remarks"): Free Memory and Used Memory Estimating the resource usage, especially the memory consumption of processes is by far more complicated than it looks like at a first glance. The philosophy is an unused resource is a wasted resource.The kernel therefore will use as much RAM as it can to cache information from your local and remote filesystems/disks. This builds up over time as reads and writes are done on the system trying to keep the data stored in RAM as relevant as possible to the processes that have been running on your system. If there is free RAM available, more caching will be performed and thus more memory 'consumed'. However this doesn't really count as resource usage, since this cached memory is available in case some other process needs it. The cache is reclaimed, not at the time of process exit (you might start up another process soon that needs the same data), but upon demand. That said, focusing more specifically on the percentage question, apart from this memory that OS takes, how much should be the minimum free memory that must be available every node so that they operate normally? The answer is: As a rule of thumb 80% memory utilization is a good threshold, anything bigger than that should be investigated and remedied.

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• La fondation Eclipse sort Eclipse Juno 3.8 /4.2, une double version de l'EDI riche en nouveautés

  La fondation Eclipse sort Eclipse Juno 3.8 /4.2 La fondation Eclipse vient de sortir la version Juno d'Eclipse. Une nouvelle version d'Eclipse est disponible. Elle porte le nom de Juno. Cette version est en fait une double version, puisque nous avons droit à la fois à la version 3.8 ainsi qu'à la version 4.2. Il faut savoir que la version 3.8 est la dernière "version" pour Eclipse 3.XX. Des versions de maintenance sont prévue pour la 3.8, mais aucune version majeure supérieure n'est prévue dans les 3.XX. Cela tient d'une volonté de la fondation Eclipse de basculer majoritairement sur les versions 4.XX. La version 4 (précédemment baptisé e4) d'Eclipse est en développement depuis 4 ans et const...

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• Uncheck Radio Button on Double Click

  - by Rajneesh Verma

  Hi, Recently I got one requirement that i have to uncheck radio button list when a user double click it (Try to uncheck). I did this using JAVA Script. Below is the code. Designer: 1: < head runat ="server" > 2: < title > :Radio Button List Demo: </ title > 3: < script language ="javascript" type ="text/javascript" > 1:   2: //Global variable to store selectedvalue 3: var lastchecked = "" ; 4:   5: function rblSelectedValue...(read more)

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• Lwjgl or opengl double pixels

  - by Philippe Paré

  I'm working in java with LWJGL and trying to double all my pixels. I'm trying to draw in an area of 800x450 and then stretch all the frame image to the complete 1600x900 pixels without them getting blured. I can't figure out how to do that in java, everything I find is in c++... A hint would be great! Thanks a lot. EDIT : I've tried drawing to a texture created in opengl by setting it to the framebuffer, but I can't find a way to use glGenTextures() in java... so this is not working... also I though about using a shader but I would not be able to draw only in the smaller region...

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• Double click executable file and nothing happens

  - by Ralf Tiede

  I'm trying to install a game for Linux called Myth 2. Autorun doesn't run when I insert the CD. When I double-click or right-click and the select "Open" on the Setup file, a box appears saying that it's an executable file, and what I want to do. I click on "Run", but nothing happens after that. I checked the permissions, and it allows it running the executable. How do I install this game? Please break down instructions as much as possible, I'm not used to using commands and Terminal. ;)

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• Stacked Launcher Item Double Click Behaviour on Alt-tab

  - by Brandon Bertelsen

  Let's say that you have multiple firefox windows open. What you see happen is an additional arrow points to it's icon in the launcher. However, if you double click the icon, it displays all of the windows in a spread out fashion, similar to the behaviour from pushing Super + W, but only for that program group. Is it possible to make this window spreading behaviour occur with alt-tab? PS: No idea what tags I should use, or if the language (jargon) in the title or question is appropriate.

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• Tab navigation and double content

  - by Guisasso

  I have a website in which i use tabs to navigate between pages. For example, page a displays A as an active tab and B and C background tabs. If the visitor gets to the website via page B, i also would like to display to page d, but not a and c. Question: I know i can just create index2 for b for example, so when the visitor gets to b from a, i display a,b,c and index1 when visitor gets to b from d for example. Is that a bad practice? I know double content isn't good, but in which other way can i or should i approach this problem? The tab navigation i designed uses < li and id tag do display active tab, defined in the < body tag.

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• C# double &amp; nary for loops

  - by MarkPearl

  Something that I wasn’t aware was possible in C# was double for loops… they have the following format. for (int x = 0, y = 0; x < 10; x++, y=x*2) { Console.Write("{0} ", y); } Console.ReadLine(); This would give you the following output… 0 2 4 6 8 10 12 14 16 18 In fact you can use as many variables as you want, the following would also be valid… for (int x = 0, y = 0, z = 10; x < 10; x++, y=x*2) { Console.Write("{0} ", z); } Console.ReadLine();

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• Double X-screens on one monitor

  - by user75226

  I have two monitors connected currently, my laptop display and an old dell monitor. For some reason one monitor (the dell) has double everything (it will make sense when you see the image). I think it came about when one day I tried using separate x-screen instead of just twin view for a specific reason I don't remember why (I was trying to get the Menu bar to show on my laptop monitor instead of the Dell I believe, it only shows up on the left-most monitor it seems) but anyhow I was wondering if anyone can help me fix this issue. Thanks.

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• Copying first 1000 PDF files having single, double quotes in their name to another folder

  - by racer_ace

  I am having this folder with PDFs into it and I need to process 1000 at a time. So I need to move them into another folder, process them and delete them. For this I tried using $ find . -maxdepth 1 -type f |head -1000|xargs cp -t $destdir It gives error on single and double quotes in filename. There are thousands of files and I have no idea how many of them has these quotes in them. Can anyone help me find a solution? And I tried with the -0 option, it did not work

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