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• A particular url on a website suddenly disappeared from google search results - why?

  - by Ragavendran Ramesh

  I have a website which had a particular page url that was indexed in google search results - in the first 10 results. Suddenly it disappeared. Now that page is not even in the first 100 results. What would be the reason? I am feeling that the page has be spammed by our competitors. Is it possible to avoid that, or can I find if that page has been spammed or not? Is it possible to find the particular page in a website is spam or malicious?

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• Skip the first RenderTarget when writing to MRT with Opaque blending

  - by cubrman

  I am writing to three rendertargets and whant to know how to tell a GPU not to write to the first RT. When you write a shader you can simply output less data than you have RTs (like output a single float4 when writing to three RTs) and only the first RTs will be affected, but you cannot specify to output this data anywhere else but to COLOR0, then 1, etc. Is there a way to write to several RTs but skip the first target? If I output zeroes, the data in the target will become zeroes, but I need it to remain untuched in the first target and only change in the specified ones. The reason I need this is to prevent data loss when calling SetRendertarget() with DiscardContents RTs. I write to all the RTs at one point and I need to write to only the specified ones afterwards. It must be the first texture as I have a depth buffer linked to it (XNA 4.0). Thanks.

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• Best practice in setting return value (use else or?)

  - by Deckard

  Whenever you want to return a value from a method, but whatever you return depends on some other value, you typically use branching: int calculateSomething() { if (a == b) { return x; } else { return y; } } Another way to write this is: int calculateSomething() { if (a == b) { return x; } return y; } Is there any reason to avoid one or the other? Both allow adding "else if"-clauses without problems. Both typically generate compiler errors if you add anything at the bottom. Note: I couldn't find any duplicates, although multiple questions exist about whether the accompanying curly braces should be on their own line. So let's not get into that.

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• SQL SERVER Simple Installation of Master Data Services (MDS) and Sample Packages Very Easy

  I twitted recently about: ‘Installing #sql Server 2008 R2 – Master Data Services. Painless.‘ After doing so, I got quite a few emails from other users as to why I thought it was painless. The reason was very simple- I was able to install it rather quickly on my laptop without any issues. There were [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Google Closure Compiler - what does the name mean?

  - by mikez302

  I am curious about the Google Closure Compiler. Why did they name it that? Does it have anything to do with lexical closures? EDIT: I tried researching it in the FAQ and documentation, as well as doing Google searches such as "closure compiler name". I couldn't find anything definite, hence the reason I am asking. I don't think I will get a profoundly helpful answer but I was hoping that I could at least satisfy my curiosity. I am not trying to solve a specific problem. I am just curious.

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• Is it legal to ask photo ID and credit card copy in the U.S

  - by selim

  I regularly order from online shops around the world and I have not see any case where the company asks for photo ID or credit card copy. Yesterday I make an order from linode.com and my order is on hold because of their "fraud check system". Is it common to ask those info in U.S. where I have never asked such info in here (Istanbul, Turkey). And I already asked what is their motive and legal stand and the reason my order is hold by their fraud system. And I also added whether is because I live in Istanbul, Turkey. Their answer was as following: "We would not be able to disclose specific information related to our fraud system." And I'm asked repeatedly whether I want to cancel my order or not. I dont questioning reputation of linode.com if I think so, I did not make an order. I think asking for photo ID is neither legal nor provide any security.

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• Big Oh notation does not mention constant value

  - by user883561

  I am a programmer and have just started reading Algorithms. I am not completely convinced with the notations namely Bog Oh, Big Omega and Big Theta. The reason is by definition of Big Oh, it states that there should be a function g(x) such that it is always greater than or equal to f(x). Or f(x) <= c.n for all values of n n0. My doubt is the why dont we mention the constant value in the definition? For example. lets say a function 6n+4, we denote it as O(n). but its not true that the definition holds good for all constant value. this holds good only when c = 10 and n = 1. For lesser values of c than 6, the value of n0 increases. So why we do not mention the constant value as a part of the definition.

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• Why is programming sometimes viewed as a second-rate role?

  - by CaptainCodeman

  I've been a programmer for most of my life. I recently interviewed for a management job in a company and the interviewer looked at my CV asked me "How do we know you're not just a programmer". Which in my opinion is quite a rude thing to say, but it's not an isolated incident and I've heard other similar things in other settings. It does seem that for some reason being a programmer is viewed as having a lower station, especially in settings where they have a separate IT department which is viewed as a support role. Is a career in software development doomed to being a second-rate support citizen?

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• I'm a CS student, and honestly, I don't understand Knuth's books

  - by Raymond Ho

  I stumbled upon this quote from Bill Gates: "You should definitely send me a resume if you can read the whole thing." He was talking about The Art of Programming books. So I was pretty curious and want to read it all. But honestly, I don't understand it. I'm really not that intellectual. So this should be the reason why I can't understand it, but I am eager to learn. I'm currently reading Volume 1 about fundamental algorithms. Are there any books out there that are friendly for novices/slow people like me, which would help to build up my knowledge so that I can read Knuth's book with ease in the future?

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• Cheerp -- C++ for web: advance or regression?

  - by Henrique Barcelos

  Recently I've run into Cheerp, a C++ to Javascript compiler, which uses a modified version of clang to generate Javascript code from C++ sources. That makes me wonder: why in the seven kingdoms would someone do this in their right mind? I mean: why would you take a language that is not designed for web at all, that is far more convoluted and bureaucratic, write your code and then compile it into Javascript itself? Can anybody see any advantages in doing so? We surely can discard performance as a reason, because in the end it generates pure Javascript code. Is there anyone here that have real experience with this? P.S.: I'm not sure if this is an on topic question, but this is the most general forum about programming that I could find in the StackExchange network. Edit Although this seems like a subjective question, it is not. I am asking for reasons that this tool could be useful. I got interested at first, but started wondering why would someone use it.

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• Data Recovery using testDisk failing!

  - by iamcreasy

  I am trying to recover an accidentally formatted partition using testDisk, After selecting the partition[pic 1] and selecting Undeleted[pic 1], it says, No deleted file found.[pic 2] 1 2 I know it's a silly question, but I just want to make sure that those data are really out of reach. Or is there anything I can do to recover them? :( I tried to repair my partition table using bootrec.exe/FixMBR & bootrec.exe/FixBoot, can this be the reason why testdisk can't work anymore? I haven't written anything on that partition. Is there any low level approach to retrieve all the lost data?

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• How do you handle increasingly long compile times when working with templates?

  - by Ghita

  I use Visual Studio 2012 and he have cases where we added templates parameters to a class "just" in order to introduce a "seam point" so that in unit-test we can replace those parts with mock objects. How do you usually introduce seam points in C++: using interfaces and/or mixing based on some criteria with implicit interfaces by using templates parameters also ? One reason to ask this is also because when compiling sometimes a single C++ file (that includes templates files, that could also include other templates) results in an object file being generated that takes in the order of around 5-10 seconds on a developer machine. VS compiler is also not particularly fast on compiling templates as far as I understand, and because of the templates inclusion model (you practically include the definition of the template in every file that uses it indirectly and possibly re-instantiate that template every time you modify something that has nothing to do with that template) you could have problems with compile times (when doing incremental compiling). What are your ways of handling incremental(and not only) compile time when working with templates (besides a better/faster compiler :-)).

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• Why does my application hang in interruptible state?

  - by Greg

  Hello, I am running on Ubuntu 10.04 LTS Server an GTK application that used to work fine. It suddenly started to hang in interruptible state (Sl+) without any apparent reason. Here is a snippet of the strace: poll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN}], 2, 0) = 0 (Timeout) poll([{fd=5, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=5, revents=POLLOUT}]) writev(5, [{"\2\30\4\0\224\4\240\0\0@\0\0\37\0\240\0\2\4\4\0\224\4\240\0\0@\0\0\37\0\240\0"..., 192}, {NULL, 0}, {"", 0}], 3) = 192 read(5, 0x2ba9ac4, 4096) = -1 EAGAIN (Resource temporarily unavailable) I googled that line read(5, 0x2ba9ac4, 4096), which seems to be more significant, and it seems that many other applications tend to have the same problem. I tried to restart my X server, but it didn't help. Do you have an idea how to solve this problem?

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• Best Practices - Dynamic Reconfiguration

  - by jsavit

  This post is one of a series of "best practices" notes for Oracle VM Server for SPARC (formerly named Logical Domains) Overview of dynamic Reconfiguration Oracle VM Server for SPARC supports Dynamic Reconfiguration (DR), making it possible to add or remove resources to or from a domain (virtual machine) while it is running. This is extremely useful because resources can be shifted to or from virtual machines in response to load conditions without having to reboot or interrupt running applications. For example, if an application requires more CPU capacity, you can add CPUs to improve performance, and remove them when they are no longer needed. You can use even use Dynamic Resource Management (DRM) policies that automatically add and remove CPUs to domains based on load. How it works (in broad general terms) Dynamic Reconfiguration is done in coordination with Solaris, which recognises a hypervisor request to change its virtual machine configuration and responds appropriately. In essence, Solaris receives a message saying "you now have 16 more CPUs numbered 16 to 31" or "8GB more RAM starting at address X" or "here's a new network or disk device - have fun with it". These actions take very little time. Solaris then can start using the new resource. In the case of added CPUs, that means dispatching processes and potentially binding interrupts to the new CPUs. For memory, Solaris adds the new memory pages to its "free" list and starts using them. Comparable actions occur with network and disk devices: they are recognised by Solaris and then used. Removing is the reverse process: after receiving the DR message to free specific CPUs, Solaris unbinds interrupts assigned to the CPUs and stops dispatching process threads. That takes very little time. primary # ldm list NAME STATE FLAGS CONS VCPU MEMORY UTIL UPTIME primary active -n-cv- SP 16 4G 1.0% 6d 22h 29m ldom1 active -n---- 5000 16 8G 0.9% 6h 59m primary # ldm set-core 5 ldom1 primary # ldm list NAME STATE FLAGS CONS VCPU MEMORY UTIL UPTIME primary active -n-cv- SP 16 4G 0.2% 6d 22h 29m ldom1 active -n---- 5000 40 8G 0.1% 6h 59m primary # ldm set-core 2 ldom1 primary # ldm list NAME STATE FLAGS CONS VCPU MEMORY UTIL UPTIME primary active -n-cv- SP 16 4G 1.0% 6d 22h 29m ldom1 active -n---- 5000 16 8G 0.9% 6h 59m Memory pages are vacated by copying their contents to other memory locations and wiping them clean. Solaris may have to swap memory contents to disk if the remaining RAM isn't enough to hold all the contents. For this reason, deallocating memory can take longer on a loaded system. Even on a lightly loaded system it took several 7 or 8 seconds to switch the domain below between 8GB and 24GB of RAM. primary # ldm set-mem 24g ldom1 primary # ldm list NAME STATE FLAGS CONS VCPU MEMORY UTIL UPTIME primary active -n-cv- SP 16 4G 0.1% 6d 22h 36m ldom1 active -n---- 5000 16 24G 0.2% 7h 6m primary # ldm set-mem 8g ldom1 primary # ldm list NAME STATE FLAGS CONS VCPU MEMORY UTIL UPTIME primary active -n-cv- SP 16 4G 0.7% 6d 22h 37m ldom1 active -n---- 5000 16 8G 0.3% 7h 7m What if the device is in use? (this is the anecdote that inspired this blog post) If CPU or memory is being removed, releasing it pretty straightforward, using the method described above. The resources are released, and Solaris continues with less capacity. It's not as simple with a network or I/O device: you don't want to yank a device out from underneath an application that might be using it. In the following example, I've added a virtual network device to ldom1 and want to take it away, even though it's been plumbed. primary # ldm rm-vnet vnet19 ldom1 Guest LDom returned the following reason for failing the operation: Resource Information ---------------------------------------------------------- ----------------------- /devices/virtual-devices@100/channel-devices@200/network@1 Network interface net1 VIO operation failed because device is being used in LDom ldom1 Failed to remove VNET instance That's what I call a helpful error message - telling me exactly what was wrong. In this case the problem is easily solved. I know this NIC is seen in the guest as net1 so: ldom1 # ifconfig net1 down unplumb Now I can dispose of it, and even the virtual switch I had created for it: primary # ldm rm-vnet vnet19 ldom1 primary # ldm rm-vsw primary-vsw9 If I had to take away the device disruptively, I could have used ldm rm-vnet -f but that could disrupt whoever was using it. It's better if that can be avoided. Summary Oracle VM Server for SPARC provides dynamic reconfiguration, which lets you modify a guest domain's CPU, memory and I/O configuration on the fly without reboot. You can add and remove resources as needed, and even automate this for CPUs by setting up resource policies. Taking things away can be more complicated than giving, especially for devices like disks and networks that may contain application and system state or be involved in a transaction. LDoms and Solaris cooperative work together to coordinate resource allocation and de-allocation in a safe and effective way. For best practices, use dynamic reconfiguration to make the best use of your system's resources.

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• Image Collector Rips Web Page Images to Your Dropbox Account

  - by Jason Fitzpatrick

  Chrome: Image Collector is a simple Chrome extension that rips the images on the page you’re visiting to your Dropbox (or Google Drive) accounts. Just click the icon, uncheck any images you don’t want it to download, and click save. You can, technically, modify the script to download the images directly to your hard drive, but modifying it was a bit of a hassle and the default save-to-Dropbox action is so smooth we saw little reason to do so. Hit up the link below to grab a free copy. Image Collector [via Freeware Genuis] How to Make Your Laptop Choose a Wired Connection Instead of Wireless HTG Explains: What Is Two-Factor Authentication and Should I Be Using It? HTG Explains: What Is Windows RT and What Does It Mean To Me?

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• Cannot run one of two OS

  - by Nathan

  first i am happy cuz i updated to ubuntu 12.10! yeah The grub had an error, but using this guide https://help.ubuntu.com/community/Boot-Repair i fixed it. yeah again I show you the page that gives me the program http://paste.ubuntu.com/1370085/ I have the system selection screen in violet, but i cannot run Windows XP. Only Ubuntu. When i press enter to start windows, the screen turns black and it returns automatically to the system selection screen. Is just that little problem, i need to use twos OS for job's reason. Thanks in advance and sorry for my little english!

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• Force ntfs volumes to be treated like any other by default

  - by soandos

  I have a 20 GB NTFS volume that I was planning on using for a variety of purposes, including being readable by windows with little effort. Unfortunately, for some reason, I cannot execute any files on the drive, even after following the answer here (I was able to mount the volume just fine, but the error persists). How can I fix this? Output from mount: /dev/sda1 on / type ext4 (rw,errors=remount-ro) proc on /proc type proc (rw,noexec,nosuid,nodev) sysfs on /sys type sysfs (rw,noexec,nosuid,nodev) none on /sys/fs/cgroup type tmpfs (rw) none on /sys/fs/fuse/connections type fusectl (rw) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) udev on /dev type devtmpfs (rw,mode=0755) devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755) none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880) none on /run/shm type tmpfs (rw,nosuid,nodev) none on /run/user type tmpfs (rw,noexec,nosuid,nodev,size=104857600,mode=0755) none on /sys/fs/pstore type pstore (rw) systemd on /sys/fs/cgroup/systemd type cgroup (rw,noexec,nosuid,nodev,none,name=systemd) gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,user=daniel)

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• MAAS and Openstack Network

  - by user281985

  Trying to figure out the best way for openstack and MASS networks to co-exist. Assuming MAAS used 10.0.0.0/24 for provisioning of various openstack nodes, once openstack, with quantum, is deployed should 10.0.0.0 be used as management network, external network, both or discarded? Reason for the question being that I ran a deployment where openstack used 10.0.0.0 as its management network, MAAS dhcp and dns were active; however, I could only access VMs through namespace and was not able to utilize MAAS's dhcp to assign floating IP. (VMs network was through an internal bridge 10.10.10.10, and external bridge was using the same interface as MAAS.) Any thoughts or ideas are appreciated.

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• Zune API Library for Ruby

  - by kerry

  Those of you who know me, know my favorite music player is the Zune. For some reason it seems most of my spare time lately seems to be creating Zune API libraries for different languages (I have a PHP one as well).  Here’s another one for Ruby!  If you use it, let me know.  I would love to hear what people are working on. It’s hosted at github, and very easy to use. zune_card = Zune::ZuneCard.for('a_zune_tag') Checkout the README for deets on what fields the object will have.

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• Simulating Smartphones on PC with Unity

  - by Cengiz Frostclaw

  I want to make a game that depends on the phone orientation (changing shoot direction with tilt), however I need to test this on PC. So is there any tool I can use to simulate the orientation of the phone with mouse or keyboard of my PC? Something like joysticks on the screen. Thanks for any help! Edit : Thanks to @jhocking for his suggestion of Unity Remote. I, however still can accept a solution with using only PC, since I'm afraid of shortening my phone's battery life, for some reason.

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• Attaining credit card data

  - by Adam

  I've read the many posts on this site that say we are not allowed to store cc numbers if we are not pci-compliant. But, I'm wondering if it is possible to send a CC number through a form to an email address? Would that be still infringing on the standards? The reason I ask is that a local business owner wants to retrieve a number through a form on his website, so he can manually enter the cc info on his end. I'm assuming the only way to properly get a credit card number is to setup a merchant account? What's the best way to get a cc number without calling the actual customer? I'm thinking email is a bad idea as well.

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• Website with sections in Drupal?

  - by Matt Hampel

  What is the best way to create a website with sections in Drupal? Users need to be able to add, remove, and nest pages fairly easily. Pages added to a section should have an appropriate URL, like "/[section name]/[page title]". This seems like a straightforward task, but I can't find the right combination of tools to do it. Subsite comes close, but for some odd reason, doesn't set up the correct content paths. The closest I got was creating a book for each subsection, but that feels like I'm using the wrong tool for the job. Edited with my solution: I used organic groups with pathauto. I set pathauto so that pages in groups had URLs that were of the form [group path]/[page title].

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• Android Layout Preview for NetBeans IDE

  - by Geertjan

  More often than not, the reason that Eclipse has more plugins than NetBeans IDE is because Eclipse has far less features out of the box. For example, thanks to its out of the box support, NetBeans IDE doesn't need a Maven plugin and it doesn't need a Java EE plugin, which are two of the most popular plugins for Eclipse. However, what would be great for NetBeans IDE to have is support for Android. It's existed for a while, thanks to the community-driven NBAndroid project, but without much desired GUI functionality. Today, the project announced a leap forward, that is, early results in providing a layout preview: Looking forward to more GUI functionality for this project!   

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• rsync not working between NTFS/FAT and EXT

  - by wim

  I have music that I play in my car, from an FAT32 USB stick. The folder which I use to put songs on is stored on my EXT4 hard drive. I add/remove/retag songs regularly and occassionally want to rsync the changes to the USB stick. But for some unknown reason (maybe permissions?), rsync copies all the files every time rather than just changed ones. I am calling rsync like : rsync -vrlptgD source dest How can I make it work like I want it to (i.e. know when a file hasn't been changed and don't copy it)?

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• Wiped data, and duplicated folders into files.

  - by Kaustubh P

  Something weird happened today, and I dont know how. Within a folder, all folders have a file by the same name, with a colon appended to it. And all the files from the most inner-most directory in my home, have been dumped to ~, with a size of 0 bytes. I have not executed any scripts or anything. I was just checking out some easter eggs, namely the gegls from outer space and free the fish and was away from the computer and was logged because of the screensaver. I couldnt log-back in with my password, so I just reset the PC, and while booting, the PC went into a drive check. BUT, IIRC, i saw the duplicate "folder files" before I had logged out, so thats not the reason! All the files have a timestamp of 14 Jan. Also, the contents of my eclipse folder have been dumped into ~. Right down to the jars and ini files. HELP!

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