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• Creating and Using a jQuery Plug-in in ASP.NET Web Forms

  - by bipinjoshi

  Developers often resort to code reuse techniques in their projects. As far as ASP.NET framework server side programming is concerned classes, class libraries, components, custom server controls and user controls are popular code reuse techniques. Modern ASP.NET web applications no longer restrict themselves only to server side programming. They also make use of client side scripting to render rich web forms. No wonder that Microsoft Visual Studio 2010 includes jQuery library by default as a part of newly created web site. If you are using jQuery for client side scripting then one way to reuse your client side code is to create a jQuery plug-in. Creating a plug-in allows you to bundle your reusable jQuery code in a neat way and then reuse it across web forms. In this article you will learn how to create a simple jQuery plug-in from scratch. You will also learn about certain guidelines that help you build professional jQuery plug-ins.http://www.bipinjoshi.net/articles/aae84a03-b4a8-477d-b087-5b7f42935220.aspx 

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• Can't remove libreoffice3.5-dict-de package

  - by Aaron Digulla

  I just installed the wrong version of LibreOffice (x86 instead of 64bit). So I tried to remove it but I get this error: > aptitude remove libreoffice3.5-dict-de Couldn't find package "libreoffice3.5-dict-de". However, the following packages contain "libreoffice3.5-dict-de" in their name: libreoffice3.5-dict-de Couldn't find package "libreoffice3.5-dict-de". However, the following packages contain "libreoffice3.5-dict-de" in their name: libreoffice3.5-dict-de No packages will be installed, upgraded, or removed. 0 packages upgraded, 0 newly installed, 0 to remove and 2 not upgraded. Need to get 0 B of archives. After unpacking 0 B will be used. The same happens when I try to use "Software Management". What's going on? aptitude: 0.6.4-1ubuntu2 Ubuntu 11.10 oneiric

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• Battery Indicator Missing

  - by Edwin

  Duplicate of: No Battery Status Icon I have just recently upgraded from 11.04 "Natty Narwhal" to 11.10 "Oneiric Ocelot" on my laptop, but do not have any battery indicator (which should be located between the volume and date indicator in Unity). I have already run sudo apt-get install indicator-power and got the following output: Reading package lists... Done Building dependency tree Reading state information... Done indicator-power is already the newest version. indicator-power set to manually installed. The following packages were automatically installed and are no longer required: //list of packages Use 'apt-get autoremove' to remove them. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. In addition, I have already tried reinstalling, but still don't have a battery indicator. What else can I do?

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• Cannot connect to a Wifi network chipset AR9287

  - by Fritz

  After updating my newly installed ubuntu 10.10. I can't connect to the wifi network anymore although it is showing it. Tried to install manufacturer driver INF file via ndiswrapper only makes things worst - lost my wifi. Downloaded and installed the compat-wireless driver for the Atheros AR9287. After installing, i got my wifi connection again but after rebooting I can't reconnect again. The Wifi access point is showing 2/5 to 3/5 signal strength. Laptop: Acer Aspire 4741G Wifi Adapter: Atheros AR9287 OS: Ubuntu 10.10 64bit

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• Installing Microsoft VX1000 webcam

  - by KRistian

  I found a tutorial with people saying it works; here are the instructions I followed. I opened a shell as root on my system and launched the following: wget http://linuxtv.org/hg/v4l-dvb/archive/tip.tar.gz tar zxvf tip.tar.gz cd v4l... (whatever the newly created directory name is) make all sudo make install Then I edited /etc/modprobe.d/blacklist-custom and added blacklist sn9c102. After reboot, I launched sudo gstreamer-properties. However when I type tar zxvf tip.tar.gz it displays: tar: You may not specify more than one `-Acdtrux' or `--test-label' option Try `tar --help' or `tar --usage' for more information. Why? How can I do this? Thanks in advance.

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• Can I force window to open on top of other windows when opened by keyboard shortcut?

  - by Rasmus

  I use SpaceFM as my primary file manager on Ubuntu. I typically open folder directly by keyboard shortcuts, so, e.g. Ctrl+Super+W opens my Work folder. Specifically, I use execute the command spacefm -w /home/rasmus/Work/ by the above shortcut, with the -w ensuring that SpaceFM opens a new window. However, this new window is not always open on top of the last active window on the workspace. This is rather annoying, as it means I sometimes have to "dig" for the newly opened window. So, my question is: Is there something additional I can add to the executed command that will ensure that the fresh window is opened on top? Alternative solutions to the same effect are welcome.

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• Cannot login other users since upgrade

  - by Jo Rijo

  I had 10.10 with 4 users and upgraded to 12.04.1 from CD. (in the installation options it detected I had 10.10 and windows installed and I chose the option to upgrade keeping users and their homes and all possible apps) Now the main user works fine but there where none of the other users, only their home directories, so I decided to create new users with the same names and seems to worked fine, there was no extra home directory created so I assume it linked the newly created user with the home directory of the same name, but I can't log in. It accepts the password goes black and takes me back to the login screen (lightDM) If I create a new user with a different name it works fine but then it creates it's own home directory.

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• How to use Btrfs with compression on external USB hard drive?

  - by Andre

  I would like to make use of Btrfs' transparent compression on an external drive. Which tool is best for formatting the drive? Disk Utility or GParted? How do I activate the compression? During formatting or when I mount the drive? I guess at mount time. I'm using usbmount to automatically mount newly attached devices, because nobody is logged in on the desktop. Would I have to set general default options somewhere in a system configuration file to get Btrfs mounted with compression, or would I specify this via FS_MOUNTOPTIONS in /etc/usbmount/usbmount.conf and how? Thanks!

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• Getting started with the G1 Garbage Collector

  - by mikew_co

  Just before the Thanksgiving break I finished up my second Oracle by Example (OBE) course on garbage collection. This one is on the new G1 garbage available in Java 7. It provides and introduction and overview of this newly available collector. Here is the link to the course: Getting Started with the G1 Garbage Collector This is a follow up to this OBE on the basics of garbage collection. Garbage Collection Basics The OBE is based on the presentation given by Charlie Hunt and Monica Beckwith at this years Java One. Hopefully I have done justice to there most excellent session. As always, feedback and comments are welcome.

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• subprocess installed post-installation script returned error exit code 1

  - by Laura quintero

  I had installed snort on ubuntu 11.04 and uninstall it because I had problems, to reinstall it leaves a problem: Reading package lists ... done Building dependency tree Reading state information ... done Calculating upgrade ... ready 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 1 not fully installed or removed. 0 B will be used for additional disk space after this operation. Do you want to continue [S / n]? s Configuring snort (2.8.5.2-9.1) ... * Stopping Network Intrusion Detection System snort * - No running snort instance found * Starting Network Intrusion Detection System snort [fail] invoke-rc.d: initscript snort, action "start" failed. dpkg: error processing snort (- configure): subprocess installed post-installation script returned error exit code 1 Errors were encountered while processing: snort E: Sub-process / usr / bin / dpkg Returned an error code (1) any solution? Commands allready used apt-get clean apt-get remove snort sudo apt-get dist-upgrade dpkg - remove - force-remove-reinstreq snort and nothing.

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• vdpau on Ubuntu 13.10 and mesa 9.2.1

  - by fioan89

  I've just installed Ubuntu 13.10. I have a Radeon HD 4570 card and I want to use the hardware acceleration capabilities that were introduced with linux 3.10 in the mesa 9.2 So my question is: since I have a linux 3.11 and mesa 9.2, do I really need to compile the mesa library with --enable-vdpau option enabled? I have installed the libvdpau from the repository but no acceleration. Should I compile and then install the latest mesa(I don't want to mess my newly installed Ubuntu 3.10)? Thanks!

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• Coding style advice? [closed]

  - by user1064918

  I'm a newly grad. I've got a lot of complaints from my supervisor at work during code-review sessions with regard to my coding style (Surprise!). I don't know if it's just him being cranky or my style is really that annoying to read. I come from the low-level language world (assembly, mostly), so I've been taught to use bitwise ops and all the cool tricks to do math whenever possible. I also have the habits of doing some other things that've been regarded as "too excessively dense to read". So I'm hoping to get some feedback from any experienced programmers! :) Also how should I justify between code performance and readability? Thanks!!

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• The Apple iPad &ndash; I&rsquo;m gonna get it!

  - by Sahil Malik

  Ad:: SharePoint 2007 Training in .NET 3.5 technologies (more information). Well, heck, here comes another non-techie blogpost. You know I’m a geek, so I love gadgets! I found it RATHER interesting to see all the negative news on the blogosphere about the iPad. The main bitch points are - No Multi tasking No Flash Just a bigger iPhone. So here’s the deal! My view is, the above 3 are EXACTLY what I had personally hoped for in the Apple iPad. Before the release, I had gone on the record saying - “If the Apple Tablet is able to run full fledged iTunes (so I can get rid of iTunes on my desktop, I don’t like iTunes on Windows), can browse the net, can read PDFs, and will be under $1000, I’ll buy it”. Well, so, the released iPad wasn’t exactly like my dream tablet. The biggest downer IMO was it’s inability to run full iTunes. But, really, in retrospect, I like the newly released iPad. And here is why. No Multi tasking and No Flash, means much better battery life. Frankly, I rarely multi task on my laptop/desktop .. yeah I know my OS does .. but ME – I don’t multi task, and I don’t think you do either!! As I type this blogpost, I have a few windows running behind the scenes, but they are simply waiting for me to get back to them. The only thing truly running and I am making use of, other than this blogost, is media player playing some music – which the iPad can do. Also, I am logged into IM/Email – which again, iPad can do via notifications. It does the limited multitasking I need, without chewing down on batteries. Smart thinking, precisely the reason I love the iPhone. I don’t want a bulky battery consuming machine. Lack of flash? Okay sure, I can’t see Hulu on my iPad. That’s some loss. I can see youtube. Also, per Adobe I can’t see some porn sites, which I don’t want to see on my iPad. But, Flash is heavy. Especially flash video. My dream is to see silverlight run on the iPhone and iPad. No flash = not such a big loss. Speaking of battery life – 10 hours is plenty. I haven’t been away from electricity for that long usually, so I’m okay with charging it up when it runs low. It’s really not such a big deal honestly. Finally, eBook functionality – wow! I went on the record saying, eBook readers are not for me, but seriously, the iPad is perfect for my eBook needs at least. And as far it being just a bigger iPhone? I’ve always wanted a bigger iPhone, precisely for the eBook reading experience. I love my iPhone, I love the apps on it. The only thing that sucks about the iPhone is battery life, but other than that, it is the best gadget I have ever bought! And something that runs on mobile chips, is that thin, and those newly written apps .. mail, calendar .. I am very very excited to get my iPad, which will be the 64gig 3G version. The biggest plus in an iPad ……… no contract on data. I am *hoping*, this means that I can buy a SIM card in Europe, and use the iPad here. That would be killer awesome! But hey, if I had to pick downers in the iPad, they would be - - I wish they had a 128G Version. Now that we have a good video viewing machine, I know I’d chew up space quickly.- Sync over WIFI, seriously Apple.  Both for iPhone and iPad.- 3 month wait!!- Existing iPhone users should get a discount on the iPad data plan. Comment on the article ....

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• Xubuntu 14.04 will not boot after preseed installation

  - by Christian

  I recently set up Xubuntu 14.04 installation using preseed, and ran into a couple of problems during boot time. At first, right after the installation completed during first boot the system complained about /tmp not being mounted and did not proceed any further. I was able to fix that problem by making an entry for /tmp in /etc/fstab like so: tmpfs /tmp tmpfs optional,nodev,nosuid 0 0 This worked for a while (and still does for workstations that are already running), but newly installed machines are broken. They do not complain like before, but take forever to boot (2h) and it seems the root partition is mounted read only and you cannot do anything useful with the system. Any ideas on what to do? You can find the presseed file here Thanks in advance Update: If I get it to boot once via some magic in rescue mode (like simply mounting the root partition read-write, then resume boot) it will work forever. While this is a workaround, it is no option to do this for every installation.

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• Add SQL Azure database to Azure Web Role and persist data with entity framework code first.

  - by MagnusKarlsson

  In my last post I went for a warts n all approach to set up a web role on Azure. In this post I’ll describe how to add an SQL Azure database to the project. This will be described with an as minimal as possible amount of code and screen dumps. All questions are welcome in the comments area. Please don’t email since questions answered in the comments field is made available to other visitors. As an example we will add a comments section to the site we used in the previous post (Länk här). Steps: 1. Create a Comments entity and then use Scaffolding to set up controller and view, and add ConnectionString to web.config. 2. Create SQL Azure database in Management Portal and link the new database 3. Test it online!   1. Right click Models folder, choose add, choose “class…” . Name the Class Comment. 1.1 Replace the Code in the class with the following: using System.Data.Entity; namespace MvcWebRole1.Models { public class Comment {    public int CommentId { get; set; }    public string Name { get; set; }      public string Content { get; set; } } public class CommentsDb : DbContext { public DbSet<Comment> CommentEntries { get; set; } } } Now Entity Framework can create a database and a table named Comment. Build your project to assert there are no build errors.   1.2 Right click Controllers folder, choose add, choose “class…” . Name the Class CommentController and fill out the values as in the example below.     1.3 Click Add. Visual Studio now creates default View for CRUD operations and a Controller adhering to these and opens them. 1.3 Open Web.config and add the following connectionstring in <connectionStrings> node. <add name="CommentsDb” connectionString="data source=(LocalDB)\v11.0;Integrated Security=SSPI;AttachDbFileName=|DataDirectory|\CommentsDb.mdf;Initial Catalog=CommentsDb;MultipleActiveResultSets=True" providerName="System.Data.SqlClient" />   1.4 Save All and press F5 to start the application. 1.5 Go to http://127.0.0.1:81/Comments which will redirect you through CommentsController to the Index View which looks like this:     Click Create new. In the Create-view, add name and content and press Create.   1: // 2: // POST: /Comments/Create 3:  4: [HttpPost] 5: public ActionResult Create(Comment comment) 6: { 7: if (ModelState.IsValid) 8: { 9: db.CommentEntries.Add(comment); 10: db.SaveChanges(); 11: return RedirectToAction("Index"); 12: } 13:  14: return View(comment); 15: } 16:    The default View() is Index so that is the View you will come to. Looking like this: 1: // 2: // GET: /Comments/ 3: 4: public ActionResult Index() 5: { 6: return View(db.CommentEntries.ToList()); 7: } Resulting in the following screen dump(success!):   2. Now, go to the Management portal and Create a new db.   2.1 With the new database created. Click the DB icon in the left most menu. Then click the newly created database. Click DASHBOARD in the top menu. Finally click Connections strings in the right menu to get the connection string we need to add in our web.debug.config file.   2.2 Now, take a copy of the connection String earlier added to the web.config and paste in web.debug.conifg in the connectionstrings node. Replace everything within “ “ in the copied connectionstring with that you got from SQL Azure. You will have something like this:   2.3 Rebuild the application, right click the cloud project and choose “Package…” (if you haven’t set up publishing profile which we will do in our next blog post). Remember to choose the right config file, use debug for staging and release for production so your databases won’t collide. You should see something like this:   2.4 Go to Management Portal and click the Web Services menu, choose your service and click update in the bottom menu.   2.5 Link the newly created database to your application. Click the LINKED RESOURCES in the top menu and then click “Link” in the bottom menu. You should get something like this. 3. Alright then. Under the Dashboard you can find the link to your application. Click it to open it in a browser and then go to ~/Comments to try it out just the way we did locally. Success and end of this story!

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• Experience Oracle Database 12 c

  - by Breanne Cooley

  Written by Diana Gray, Principal Curriculum Product Manager, Oracle University Developing your skills with Oracle Database 12c may not be as hard as you think. Oracle’s expert curriculum developers designed curriculum offerings that can help you determine where you are and where you want to go. By looking at our Oracle Database 12c Solution page, you can quickly identify what you’ve taken in the past and what you still might require. Getting up to speed on this new technology is key to being able to access a platform that totally embraces the cloud. These new enhancements will make your job easier as you begin to understand how the new features work together. Get started with Oracle Database 12c by taking the newly released  Oracle Database 12c: New Features for Administrators Self-Study Course After you download the software, see which training and certifications are available. Add well-respected credentials of expertise to your portfolio of learning through Oracle University.

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• Is it safe to run upgrade with Pinned Applications in Synaptic

  - by BlueXrider

  I have firefox, thunderbird, thunderbird-locale-en, thunderbird-locale-en-us, xul-ext-calendar-timezones, xul-ext-gdata-provider and xul-ext-lightning pinned in Synaptic. When I run apt-get upgrade. I get the following The following packages will be upgraded: boot-repair boot-sav darktable firefox libvlc5 libvlccore5 thunderbird thunderbird-locale-en thunderbird-locale-en-us vlc vlc-data vlc-nox vlc-plugin-notify vlc-plugin-pulse xul-ext-calendar-timezones xul-ext-gdata-provider xul-ext-lightning 17 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Need to get 53.0 MB of archives. After this operation, 606 kB of additional disk space will be used. Do you want to continue [Y/n]? Are these packages really going to be upgraded?

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• Photoshop, slice, Dreamweaver, web?

  - by Omega

  So I am playing around with Photoshop and Dreamweaver. I have created a site layout, and have used the slice function on it. Next, I saved as html & images. In Dreamweaver, I open such html file and I fill the page with content, links, etc. I have a website and everything, and I would like to use my newly created html page on it. But, obviously, if I copy & paste the html to my website it won't work because it will lack the images. But two things: I can't find the images, and apparently they are a lot. I am sure I am doing a great mistake regarding the images. Can someone help me?

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• Installing software on an offline Ubuntu server

  - by Muhammad Gelbana

  Assuming that I have a server with Ubuntu server newly installed on it. I was thinking of installing the very same version on Virtual Box (Or any other virtualization software), connect it to the internet and use apt-get to only download the packages for upgrading the system and the new software such as (tomcat7, openjdk6-default-headless..etc). Then copy the downloaded packages from the archive folder to the offline server's archive folder through a USB stick. So now the virtual system won't actually be upgraded nor have any new software installed. But would running the very same apt-get commands on the offline system without the download directive -d be executed without issues ? *EDIT:*This needs to be as simple as possible because I'll have to write a guide for our client to do this on his own and so it won't be acceptable to require deep Linux knowledge to do this.

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• Lenovo G580 Brightness Error caused by unsupported updates. How to revert?

  - by Arjun Bajaj

  I just installed the 64-Bit version of Ubuntu 12.04 on my newly bought Lenovo G580. The brightness control was working properly using the Live CD and when I first started the installed version. Then I updated Ubuntu and restarted my laptop, and suddenly now, I can't change the brightness. I think its caused by some update. And then I went and checked my update settings, and saw that Unsupported Updates were enabled by default. So now I need to fix this brightness issue somehow. What should I do to locate the wrong update and remove it? I don't even mind removing all the updates right now. Thanks for the help. :)

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• Victory rewards in digital CCG

  - by Nils Munch

  I am currently polishing a digital CCG where people can play against friend and random opponents in a classical Magic the Gathering-like duel CCG. I plan to award the players with 20 ingame currency units (lets call them gold) for each hour they are playing, 50 for each day they are playing and X for each victory. Now, the X is what I am trying to calculate here, since I would prefer keeping the currency to a certain value, but also with to entice the players to battle. I could go with a solid figure, say 25, for beating up an opponent. But that would result in experienced players only beating up newly started players, making the experience lame for both. I could also make a laddered tier, where you start at level 1, and raise in level as you defeat your opponents, where winning over a player awards you his level x 2 in gold. Which would you prefer if you were playing a game like this. There is no gold-based scoreboard, but the gold is used to purchase new cards along the way.

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• MySQL for Beginners course - first steps to lowering your Database TCOs

  - by Antoinette O'Sullivan

  Thinking about lowering your Database TCO by using the MySQL Server? Don't miss the chance to get training from the source! With the newly released MySQL for Beginners class, learn how this powerful relational database management system can make your life easier and more fun! This course covers all the basics and will get you on your way, with a solid foundation. This instructor led, hands-on class covers the fundamentals of SQL and relational databases, using MySQL as a teaching tool. Send information about this course release to a friend who might be considering getting started on the world's most popular small footprint database.

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• New Recipes for WebLogic 12.1.2

  - by JuergenKress

  New Recipes for Oracle WebLogic 12.1.2 Oracle ACE Director Frank Munz talks about the new content to be found in the newly published second edition of his book "Oracle WebLogic Server 12c: Distinctive Recipes: Architecture, Development and Administration," and about some of his favorite features in WebLogic 12.1.2. Watch the video here. 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. Blog Twitter LinkedIn Mix Forum Wiki Technorati Tags: Frank Munz,WebLogic Recipes,WebLogic,WebLogic Community,Oracle,OPN,Jürgen Kress

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• Eclipse not launching

  - by user274959

  I have installed Ubuntu 14.04, I have installed Eclipse using Ubuntu Software Center. But Eclipse is not opening, when I click it is not opening or showing any error message it is very silent. Output for java -version: java version "1.7.0_55" Java(TM) SE Runtime Environment (build 1.7.0_55-b13) Java HotSpot(TM) Server VM (build 24.55-b03, mixed mode) uname -a: Linux Lenovo-IdeaPad-Z510 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:08:14 UTC 2014 i686 i686 i686 GNU/Linux When I give Eclipse in terminal I am getting The program 'eclipse' is currently not installed. You can install it by typing: sudo apt-get install eclipse-platform And when I give sudo apt-get install eclipse-platform Reading package lists... Done Building dependency tree Reading state information... Done eclipse-platform is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.

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• Common mistakes made by new programmers without CS backgrounds [on hold]

  - by mblinn

  I've noticed that there seems to be a class of mistakes that new programmers without CS backgrounds tend to make, that programmers with CS backgrounds tend not to. I'm not talking about not understanding source control, or how to design large programs, or a whole host of other things that both freshly minted CS graduates and non-CS graduates tend to not understand, I'm talking about basic mistakes that having a CS background will prevent a programmer from making. One obvious and well trod example is that folks who don't have a basic understanding of formal languages will often try to parse arbitrary HTML or XML using regular expressions, and possibly summon Cthulu in the process. Another fairly common one that I've seen is using common data structures in suboptimal ways like using a vector and a search function as if it were a hash map. What sorts of other things along these lines would you look out for when on-boarding a batch of newly minted, non-CS programmers.

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