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• How to discredit hacked links pointing at my company's website

  - by Dan Gayle

  The competition of one of my company's websites has started a really dirty campaign of acquiring hack links. One of their ingenious tactics has been to seed in links to OUR site withing their hack bot, making US look like we might be responsible for it or using us to cover their tail. These are .gov and .edu sites. Is there any way possible to discredit these links? To disavow them at all? EDIT: Penguin has really effected this question, IMO. Does anyone know if there is a revised opinion on disavowing backlinks to your site?

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• How can I secretly ban someone (hellban) in phpbb?

  - by Dan Fabulich

  The trolls are driving me crazy; I'd like to experiment with a secret ban. http://www.codinghorror.com/blog/2011/06/suspension-ban-or-hellban.html A hellbanned user is invisible to all other users, but crucially, not himself. From their perspective, they are participating normally in the community but nobody ever responds to them. They can no longer disrupt the community because they are effectively a ghost. It's a clever way of enforcing the "don't feed the troll" rule in the community. When nothing they post ever gets a response, a hellbanned user is likely to get bored or frustrated and leave. It looks like there's no way to do this out-of-the-box with phpbb. Is there a way to hack it in?

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• Moving objects colliding when using unalligned collision avoidance (steering)

  - by James Bedford

  I'm having trouble with unaligned collision avoidance for what I think is a rare case. I have set two objects to move towards each other but with a slight offset, so one of the objects is moving slightly upwards, and one of the objects is moving slightly downwards. In my unaligned collision avoidance steering algorithm I'm finding the points on the object's forward line and the other object's forward line where these two lines are the closest. If these closest points are within a collision avoidance distance, and if the distance between them is smaller than the two radii of the two object's bounding spheres, then the objects should steer away in the appropriate direction. The problem is that for my case, the closest points on the lines are calculated to be really far away from the actual collision point. This is because the two forward lines for each object are moving away from each other as the objects pass. The problem is that because of this, no steering takes place, and the two objects partially collide. Does anyone have any suggestions as to how I can correctly calculate the point of collision? Perhaps by somehow taking into account the size of the two objects?

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• twin view on gnome when monitor is unplugged

  - by james t

  i have a macbook pro which is often connected to a monitor, twin view on gnome works pretty well, but a problem arises when i disconnect the monitor, any window that resided on that workspace is no longer available. another issue is when i start my computer when a monitor is not present, because xorg.conf file has the monitor configuration in it, my mouse pointer often disappears in the other monitor's virtual space, as if it is currently plugged, osx deals with this issue elegantly by refreshing the display every time a plug in/out occurs, is there anything similar that can be done in linux ?

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• Are there any Java based libraries that provide game mapping features?

  - by James.Elsey

  Hi All, I'm working on a Java web based game in my spare time (springMVC / JSPs etc), and I'm wondering what are my options for dealing with the "game world" or mapping element. My game will be 2d / text based, so I have no need for any OpenGL / Flash etc. My initial idea was to use Google maps and provide a custom overlay, but I want to know if there are any alternatives? For example, if I create a 2d map with all my zones, are there any libraries that will help me plot players, work out distances and so forth? Regards

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• Uninstalling GRUB from MacBook Air

  - by James Brooke

  So... I have a MacBook Air and I recently tried to install Ubuntu on my external HD. I booted Ubuntu from a flash drive and everything had gone fine. I turned off my computer and when I turned it on again I got a message of error and a "grub rescue" line to enter some code. I rebooted holding the "option" key and I selected the Mac partition and everything is fine with my system, but every time I start my system and I don't hold the "option" key, I get the same error and the grub rescue message. I just want things to go back to normal, as they were before I installed Ubuntu on my external HD (which, btw, presented a message that said there was no boot loader). What do I do?

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• Page Load Time - "Waiting on..." taking ages. What part of page request process is hung?

  - by James

  I have a new cluster site running on Magento that's on a development server that is made up of 2 x web servers and 1 x database server. I have optimized the site in all areas I know (gzip, increasing php memory limits, increasing database memory limits etc) but sometimes the page loading gets stuck on 'waiting for xxx.xx.xx.xxx' (Chrome and other broswers, chrome just shows it that way). It can sit there for 40 + seconds, sometimes it just never loads and I close it in frustration. What part of the page loading process is this hung at? Is it a server issue, database issue, platform issue? I need to know where to start or whether to push the hosting provider about it.

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• Does Submit to Index on a page with new content update Content Keywords for the site?

  - by Dan Kanze

  Using Google Webmaster Tools I'm trying to update the Content Keywords of my site. I'm confused about the relationship between Submit to Index and Content Keywords Does Fetch as Google -- Submit to Index on a previously existing indexed page containing new content expidite updating the Content Keywords crawled by the real Google bot? Does Submit to Index only submit new URL's so that previously indexed URL's still point to the older cached version until Google crawls specifically for new content on its own? Does Submit to Index have anything to do with Content Keywords or crawling new content being a previously indexed page or never been indexed page?

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• USB Drive Warm Boot Issue. Cold boot = Perfect. Warm boot = "No boot sector found on USB device"

  - by Dan

  I'm experiencing a boot/reboot quirk similar to, yet somewhat different from others posted here. I have two Western Digital "Passport" external USB2 drives (160GB and 320GB) with Ubuntu 11.10 installed. The BIOS on my laptop is set to boot USB drives before the internal drive, and it works well. Either drive will cold-boot Ubuntu 11.10 perfectly. However, at times the computer must be restarted (warm boot) to have software updates or other changes take effect. When I warm-boot the computer, the computer goes through its normal shutdown/restart, then the usual BIOS tests, at which time the USB drive is selected momentarily (as normal), and that's when the trouble starts. I get a "No boot sector found on USB device", and the computer proceeds to boot Windows from the internal drive. If I press F12 early during the restart sequence (allows manual selection of the boot sequence), USB is still shown before the internal drive on the sequence list (as it should be). If I highlight "USB" and press ENTER, I still get a "No boot sector..." error message, but the external USB drive then proceeds to boot Ubuntu normally. I have a third external USB drive (Western Digital 160 GB Media Center) that cold-boots and warm-boots perfectly, so I know everything in the computer is set up properly. It also tells me Ubuntu is set up correctly on the drives, as all three drives were done identically, and at the same time. I've tried formatting the Passport drives NTFS and FAT32, but it didn't change anything. If I power-down the computer, then start it up again, it will boot Ubuntu from either of the Passport drives perfectly - every time. It's as if during a warm boot the Passport drives are somehow looking for the boot loader in the wrong location on the drive - yet either drives works when booting from a cold start. Not a show-stopper .. but frustrating. Computer is a Dell XPS M1530, A12 BIOS (latest), but I don't think the computer plays into the issue because one of the three drives works at all times. It's only the two WD Passport models at issue here. Thanks!

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• Outlook of XBAP technology [closed]

  - by Dan

  My company is debating releasing an application using XBAP deployment. Does anyone know the feasibility of this technology? It seems like it only exists in IE and there's been no new development talk from MS about it. It seems like most people are going Silverlight (though even that's being cut from what I can tell in favor of HTML5). What are your thoughts? I can't even seem to find anything about MS supporting it in IE10.

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• How would I go about setting a CSS gradient background in JavaScript?

  - by Dan

  The CSS gradient is described here, but I have no idea how to select for these properties in JavaScript. I would rather not use jQuery for this if at all possible. EDIT: Just doing the following doesn't seem to work... document.getElementById("selected-tab").style.background = "#860432"; document.getElementById("selected-tab").style.background = "-moz-linear-gradient(#b8042f, #860432)"; document.getElementById("selected-tab").style.background = "-o-linear-gradient(#b8042f, #860432)"; document.getElementById("selected-tab").style.background = "-webkit-gradient(linear, 0% 0%, 0% 100%, from(#b8042f), to(#860432))"; document.getElementById("selected-tab").style.background = "-webkit-linear-gradient(#b8042f, #860432)";

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• Is there any officially recognized, specific determinants that make a language programming/scripting?

  - by Dan

  I remember when I was first learning web-based programming everyone was intent on JavaScript not being a "programming language," but rather a scripting language; I have not heard that argument in quite a while now. I hear a lot of languages, like perl for example, referred to at different times as both a scripting and programming language. I know that a scripting language is less capable than a programming language, but where exactly does the line lie? Citation would be appreciated.

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• Has test driven development (TDD) actually benefited a real world project?

  - by James

  I am not new to coding. I have been coding (seriously) for over 15 years now. I have always had some testing for my code. However, over the last few months I have been learning test driven design/development (TDD) using Ruby on Rails. So far, I'm not seeing the benefit. I see some benefit to writing tests for some things, but very few. And while I like the idea of writing the test first, I find I spend substantially more time trying to debug my tests to get them to say what I really mean than I do debugging actual code. This is probably because the test code is often substantially more complicated than the code it tests. I hope this is just inexperience with the available tools (RSpec in this case). I must say though, at this point, the level of frustration mixed with the disappointing lack of performance is beyond unacceptable. So far, the only value I'm seeing from TDD is a growing library of RSpec files that serve as templates for other projects/files. Which is not much more useful, maybe less useful, than the actual project code files. In reading the available literature, I notice that TDD seems to be a massive time sink up front, but pays off in the end. I'm just wondering, are there any real world examples? Does this massive frustration ever pay off in the real world? I really hope I did not miss this question somewhere else on here. I searched, but all the questions/answers are several years old at this point. It was a rare occasion when I found a developer who would say anything bad about TDD, which is why I have spent as much time on this as I have. However, I noticed that nobody seems to point to specific real-world examples. I did read one answer that said the guy debugging the code in 2011 would thank you for have a complete unit testing suite (I think that comment was made in 2008). So, I'm just wondering, after all these years, do we finally have any examples showing the payoff is real? Has anybody actually inherited or gone back to code that was designed/developed with TDD and has a complete set of unit tests and actually felt a payoff? Or did you find that you were spending so much time trying to figure out what the test was testing (and why it was important) that you just tossed out the whole mess and dug into the code?

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• Grub Rescue Error: Unknown Filesystem

  - by James

  I was trying to dual boot Windows with Linux (linux installed first). I read that it was easier to do so if windows was installed first. So I tried to install windows, by creating a partition for it. There wasn't enough room on the drive so I tried changing the filesystem of my existing partition to support windows. Now whenever I try to start my computer I get the grub rescue screen. I've tried booting from CD and USB with ubuntu and also with windows, but nothing happens. I ran ls in grub rescue and got hd0, (hd0,msdos5), cd (with an install disc inserted), fd0, and fd1. However if I run ls on any of these I receive the error: unknown filesystem. Can anyone help me out?

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• Next Post...

  - by James Michael Hare

  The next post on the concurrent collections will be next Monday.  I'm a little behind from my Topeka trip earlier this week, so sorry about the delay! Also, I was thinking about starting a C++ Little Wonders series as well.  Would anyone have an interest in that topic?  I primarily use C# in my development work, but there is still a lot of legacy C++ I work on as well and could share some tips & tricks.

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• Library and several small programs that use it: how should I structure my git repository?

  - by Dan

  I have some code that uses a library that I and others frequently modify (usually only by adding functions and methods). We each keep a local fork of the library for our own use. I also have a lot of small "driver" programs (~100 lines) that use the library and are used exclusively by me. Currently, I have both the driver programs and the library in the same repository, because I frequently make changes to both that are logically connected (adding a function to the library and then calling it). I'd like to merge my fork of the library with my co-workers' forks, but I don't want the driver programs to be part of the merged library. What's the best way to organize the git repositories for a large, shared library that needs to be merged frequently and a number of small programs that have changes that are connected to changes in the library?

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• My WiFi gets deauthenticated every few minutes or seconds (Reason: 7)

  - by dan

  My Wifi on my new Thinkpad W520 running Natty keeps dropping out and coming back on. Output from dmesg below. Any advice? [30493.687552] wlan0: authenticate with e0:91:f5:ef:7b:b2 (try 1) [30493.689127] wlan0: authenticated [30493.689144] wlan0: associate with e0:91:f5:ef:7b:b2 (try 1) [30493.693592] wlan0: RX AssocResp from e0:91:f5:ef:7b:b2 (capab=0x411 status=0 aid=4) [30493.693595] wlan0: associated [31631.172868] wlan0: deauthenticated from e0:91:f5:ef:7b:b2 (Reason: 7) [31631.211847] cfg80211: All devices are disconnected, going to restore regulatory settings [31631.211868] cfg80211: Restoring regulatory settings [31631.211873] cfg80211: Calling CRDA to update world regulatory domain [31631.215037] cfg80211: Ignoring regulatory request Set by core since the driver uses its own custom regulatory domain [31631.215042] cfg80211: World regulatory domain updated: [31631.215044] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [31631.215046] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [31631.215049] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [31631.215051] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [31631.215053] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [31631.215055] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [31632.289638] wlan0: authenticate with e0:91:f5:ef:7b:b2 (try 1) [31632.291262] wlan0: authenticated [31632.291276] wlan0: associate with e0:91:f5:ef:7b:b2 (try 1) [31632.295119] wlan0: RX AssocResp from e0:91:f5:ef:7b:b2 (capab=0x411 status=0 aid=4) [31632.295123] wlan0: associated [31886.234836] wlan0: deauthenticated from e0:91:f5:ef:7b:b2 (Reason: 7) [31886.306735] cfg80211: All devices are disconnected, going to restore regulatory settings [31886.306740] cfg80211: Restoring regulatory settings [31886.306744] cfg80211: Calling CRDA to update world regulatory domain

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• OpenGL setup on Windows

  - by kevin james

  I have been trying to use OpenGL for two days now. First on Mac, then on Windows. The problem with Mac is that it doesn't support the newer versions of OpenGL. I ran a tutorial that actually did get some things working, but it only works in XCode (i.e., I can't create a new file, paste in the same code, and get it to work). Because of these issues, I moved to Windows. My Windows 7 has OpenGL 4.3, which is the same that is used in alot of other tutorials. However, not one of these tutorials gives any instruction on how to set it up for the first time. I have come across some vague posts saying that some libraries need to be linked. But WHAT libraries, and HOW do I link them? Please help. I am pretty desperate to set this up as this project is due for work soon. I have actually used OpenGL before at my university, but the computers already had everything set up. The project itself is very easy, but setting up OpenGL is not something I know how to do.

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• A terminal emulator for ex-Windows users

  - by Dan

  There are several things I would like to be better in Ubuntu Terminal Emulator. coloring, like in the source code Copy and paste keyboard shortcuts that I used all the time in Windows: Ctrl-C and Ctrl-V (Most of people here in Ubuntu use Ctrl+C and Ctrl+V keyboard shortcuts to copy and paste everywhere except the terminal! I think it's annoying for newcomers, and I don't worry about historical reasons) A feature to save all the output to log file UPDATE: Can the terminal be a powerful feature-full user-friendly tool like a modern IDE? The Linux user can spend 30% of time in the terminal. Programmers no longer code in a notepad. Can I see the history pane? Suggestions? Directory pane? Commands list? Search for words in an output? Contextual behavior? "Search in Google" for a mouse right-click. Tips and tricks learning? Time is money! Please, people, give me a link to the 21st - century terminal.

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• Failed Project: When to call it?

  - by Dan Ray

  A few months ago my company found itself with its hands around a white-hot emergency of a project, and my entire team of six pulled basically a five week "crunch week". In the 48 hours before go-live, I worked 41 of them, two back to back all-nighters. Deep in the middle of that, I posted what has been my most successful question to date. During all that time there was never any talk of "failure". It was always "get it done, regardless of the pain." Now that the thing is over and we as an organization have had some time to sit back and take stock of what we learned, one question has occurred to me. I can't say I've ever taken part in a project that I'd say had "failed". Plenty that were late or over budget, some disastrously so, but I've always ended up delivering SOMETHING. Yet I hear about "failed IT projects" all the time. I'm wondering about people's experience with that. What were the parameters that defined "failure"? What was the context? In our case, we are a software shop with external clients. Does a project that's internal to a large corporation have more space to "fail"? When do you make that call? What happens when you do? I'm not at all convinced that doing what we did is a smart business move. It wasn't my call (I'm just a code monkey) but I'm wondering if it might have been better to cut our losses, say we're not delivering, and move on. I don't just say that due to the sting of the long hours--the company royally lost its shirt on the project, plus the intangible costs to the company in terms of employee morale and loyalty were large. Factor that against the PR hit of failing to deliver a high profile project like this one was... and I don't know what the right answer is.

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• Dependency Injection Confusion

  - by James

  I think I have a decent grasp of what Dependency Inversion principle (DIP) is, my confusion is more around dependency injection. My understanding is the whole point of DI is to decouple parts of an application, to allow changes in one part without effecting another, assuming the interface does not change. For examples sake, we have this public class MyClass(IMyInterface interface) { public MyClass { interface.DoSomething(); } } public interface IMyInterface { void DoSomething(); } How is this var iocContainer = new UnityContainer(); iocContainer.Resolve<MyClass>(); better practice than doing this //if multiple implementations are possible, could use a factory here. IMyInterface interface = new InterfaceImplementation(); var myClass = new MyClass(interface); It may be I am missing a very important point, but I am failing to see what is gained. I am aware that using an IOC container I can easily handle an objects life cycle, which is a +1 but I don't think that is core to what IOC is about.

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• Just being hired as a senior developer, never even been a junior developer, what should I expect?

  - by Mark James

  I've been a freelancer and a coder by night for a while, and recently, I've been hired after several levels of interviews in a nice NY company, even though I've some lacks in specific fields. Is this common for companies to hire seniors with less experience? Will they wait some weeks to respect a certain learning curve? I don't know anything about working in a company, so that's why I worry. After one week, I'm still checking and exploring sources, but after one week of work, it seems that some coworkers are considering that I'm slow. I'm good in maths, physics, algorithms, but still I need to learn about all the templates used in this company. Anyone here already received a less-experienced senior member in his team? Is this acceptable? I'm planing on having a meeting with my boss to stop worrying about that. Sounds like a good idea?

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• Cursor (touchpad) moves and clicks erratically

  - by James Wood

  Sometimes (usually after two-finger scrolling) the touchpad on my Asus X54C becomes unresponsive and the cursor begins to click and move small distances. Clicking seems to happen more often than moving. Unlike with other similar problems, I've never seen the cursor move to (0, 0). Suspending (closing the lid) and unsuspending doesn't help, and neither does moving to a tty and back or rebooting. I've also tried disabling the touchpad via Fn+F9. That tends to take a long time, but doesn't have any effect. I'm on 13.10 at the moment, but I remember it happening on 13.04 as well. Here's the pointer section of xinput: ? Virtual core pointer id=2 [master pointer (3)] ? ? Virtual core XTEST pointer id=4 [slave pointer (2)] ? ? ETPS/2 Elantech Touchpad id=12 [slave pointer (2)]

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• How do I architect 2 plugins that share a common component?

  - by James

  I have an object that takes in data and spits out a transformed output, called IBaseItem. I also have two parsers, IParserA and IParserB. These parsers transform external data (in format dataA and dataB respectively) to a format usable by my IBaseItem (baseData). I want to create 2 systems, one that works with dataA and one that works with dataB. They will allow the user to enter data and match it to the right plugins/implementations and transform the data to outData. I want to write these traffic cops myself, but have other people provide the parsers and baseitem logic, and and as such am implementing these items as plugins (hence the use of interfaces). Other programmers can choose to implement 1 or both parsers. Q: How should I structure the way base items and parsers are associated, stored, and loaded into each of my programs? Class Relations: What I've Tried: Initially I though there should be a different dll for each of my 2 traffic cops, that each have a parser and baseitem in them. However, the duplication of baseitem logic doesn't seem right (especially if the base item logic changes). I then thought the base items could all have their own dll, and then somehow associate parsers and baseitems (guids?), but I don't know if implementing the overhead id/association is adding too much complexion.

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• Where to implement storable items

  - by James Hay

  I'm creating a multiplayer online trading game. The things that are traded range from raw items to complex products. For example Steel is a raw item. Mechanical Assembly is a more complex item that requires 2x Steel and maybe 1x Rubber. Then Hydraulics is an item that contains 2x Mechanical Assemblies and 1x Electronics (which is another complex item). So and so forth. These items will be created by me, players can't create their own items, so it doesn't need to be able to handle arbitrary layers of complexity for items. If my example isn't clear, think Minecraft. You have wooden planks, which can be made into sticks. From there the sticks - combined with metals - can be made into tools. My game is nothing to do with minecraft or any sandbox building game, but it uses a similar progressive complexity to creating items that I want to have in my game. My question is basically, how do you store something like this assuming that I will want to add more items in the future? Do you store it in a database or in a seperate library that the game uses? EDIT None of the items actually "do" anything, they are simply there to either sell, purchase, or combine with other items to make a more complex item, which can then be sold, purchased or combined... you get the idea. The items themselves would not have any properties, but the instances of the items would. For example an item that one player has would have a certain "quality" and if they were selling it a certain "price". An instance of that same item that a different player had would need to have a different "quality" and "price" if they were selling it. I think the price part will not be required on an individual item because instead I would have a "sale" object which was for a price and contained certain items.

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