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• Graphical disk surface check tool?

  - by sbergeron

  I need a program that can scan my hard drive for read and write errors so I can partition around them. I REALLY don't do well with numbers but if I can have something that shows an output like the graphical display on gparted that would be perfect. I know a lot of people would recommend replacing the disk but right now I can't as I NEED this laptop for school and can't wait for a hard drive to arrive (I have ordered one, yes, but I don't expect it to arrive for another couple weeks as I only figured out afterwards they still have to manufacture it)

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• First steps on setting up a query based server [closed]

  - by asghar ashgari

  I got a physical server at home and I want to do the following silly project to learn the concept behind server-backend development, and then do a real project later on: Idea: Turn the server to a calculator. I want any person publicly send a query to the server (i.e., 2+2) from the terminal and the server give me the result. So the question is basically where to start, what sort of software I need to install, and what sort of program I need to write?.

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• Should accessible members of an internal class be internal too?

  - by Jeff Mercado

  I'm designing a set of APIs for some applications I'm working on. I want to keep the code style consistent in all the classes I write but I've found that there are a few inconsistencies that I'm introducing and I don't know what the best way to resolve them is. My example here is specific to C# but this would apply to any language with similar mechanisms. There are a few classes that I need for implementation purposes that I don't necessarily want to expose in the API so I make them internal whereever needed. Generally what I would do is design the class as I normally would (e.g., make members public/protected/private where necessary) and change the visibility level of the class itself to internal. So I might have a few classes that look like this: internal interface IMyItem { ItemSet AddTo(ItemSet set); } internal class _SmallItem : IMyItem { private readonly /* parameters */; public _SmallItem(/* small item parameters */) { /* ... */ } public ItemSet AddTo(ItemSet set) { /* ... */ } } internal abstract class _CompositeItem: IMyItem { private readonly /* parameters */; public _CompositeItem(/* composite item parameters */) { /* ... */ } public abstract object UsefulInformation { get; } protected void HelperMethod(/* parameters */) { /* ... */ } } internal class _BigItem : _CompositeItem { private readonly /* parameters */; public _BigItem(/* big item parameters */) { /* ... */ } public override object UsefulInformation { get { /* ... */ } } public ItemSet AddTo(ItemSet set) { /* ... */ } } In another generated class (part of a parser/scanner), there is a structure that contains fields for all possible values it can represent. The class generated is internal too but I have control over the visibility of the members and decided to make them internal as well. internal partial struct ValueType { internal string String; internal ItemSet ItemSet; internal IMyItem MyItem; } internal class TokenValue { internal static int EQ(ItemSetScanner scanner) { /* ... */ } internal static int NAME(ItemSetScanner scanner, string value) { /* ... */ } internal static int VALUE(ItemSetScanner scanner, string value) { /* ... */ } //... } To me, this feels odd because the first set of classes, I didn't necessarily have to make some members public, they very well could have been made internal. internal members of an internal type can only be accessed internally anyway so why make them public? I just don't like the idea that the way I write my classes has to change drastically (i.e., change all uses of public to internal) just because the class is internal. Any thoughts on what I should do here? It makes sense to me that I might want to make some members of a class declared public, internal. But it's less clear to me when the class is declared internal.

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• Functional vs. Non-Functional Requirements vs Design ideas in an SRS

  - by Nicholas Chow

  For a school project, I had to create a SRS for a "fictional" application. However they did not show us what it exactly entails, and were very vague with explanations. The SRS asked of us has to have at least 5 functional requirements, 5 non functional requirements and 1 constraint. Now I have tried my best to make one however I there are still some uncertainties left, I hope you experts can tell me whether or not I am thinking in the right direction. I will keep on updating this posts as I have questions regarding requirements that are vague to me, thank you all in advance for making SRS more clear for me FR1 Registration of Organizer FR1 describes the registration of an Organizer on CrowdFundum FR1.1 The system shall display a registration form on the website. FR1.2 The system shall require a Name, Username, Document number passport/ID card, Address, Zip code, City, Email address, Telephone number, Bank account, Captcha code on the registration form when a user registers. FR1.3 The system shall check whether the Name, Username, Document number passport/ID card, Address, Zip code, City, Email address, Telephone number, Bank account, Captcha code are filled out correctly within 1 seconds after a user submits the registration form. FR1.4 The system shall display an error message containing: “Registration could not be completed” to the subscriber within 1 seconds after the system check of the registration form was unsuccessful. FR1.5 The system shall send a verification email containing a verification link to the subscriber within 30 seconds after the system check of the registration form was successful. FR1.6 The system shall add the newly registered Organizer to the user base within 5 seconds after the verification link was accessed. Questions: FR1.1 Is this a functional requirement, or have I incorporated design idea in it by using "shall display on website". If so what would be a better way to write it? FR1.2 Is this better written in one requirement, or should I write each condition as a seperate requirement? FR1.3-1.5 Are these functional requirements or did I mix some non functional elements in it? How is it better phrased? FR1.3-1.6 Are these all correct functional requirements? As in free of ambiguity, complete, implementation free etc.

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• Large files in SharePoint 2010

  - by Sahil Malik

  SharePoint 2010 Training: more information Hoooorayy! My latest code-mag article is finally online. This is an article I’ve been wanting to write for a while now – there is just so much goo in the world around large file management in SharePoint. So I thought an article that sums up the things you need to consider for large file management projects in SharePoint was in order. Anyway, here is the article, enjoy Read full article ....

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• Software emulated OpenGL with higher version than my graphics card supports

  - by leemes

  I have an Intel GMA 950 chipset in my netbook. I want to learn how to write OpenGL shader programs with this fantastic tutorial and therefore need OpenGL 3.3. Sadly, my graphics card only supports OpenGL 1.4. I think that MESA can emulate OpenGL in software, so I'm wondering if it can emulate OpenGL 3.3 without any hardware accelleration (performance is very much no problem, since this is only for learning and testing puroses). Is there any possibility to do this?

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• What is the difference between "data hiding" and "encapsulation"?

  - by Software Engeneering Learner

  I'm reading "Java concurrency in practice" and there is said: "Fortunately, the same object-oriented techniques that help you write well-organized, maintainable classes - such as encapsulation and data hiding -can also help you create thread-safe classes." The problem #1 - I never heard about data hiding and don't know what it is. The problem #2 - I always thought that encapsulation is using private vs public, and is actually the data hiding. Can you please explain what data hiding is and how it differs from encapsulation?

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• zfs raidz1-0 corrupted data, all disk are online

  - by gkcr2d2

  my zfs pool "datas" is unavailable but all my disk are online, Do you know how the problem can be fixed? Thank you for your help. root@oxygen:~# zpool status pool: datas state: UNAVAIL scan: none requested config: NAME STATE READ WRITE CKSUM datas UNAVAIL 0 0 0 insufficient replicas raidz1-0 UNAVAIL 0 0 0 corrupted data scsi-SATA_ST3000DM001-9YN_W1F0LBVX ONLINE 0 0 0 scsi-SATA_ST3000DM001-9YN_W1F0KYX9 ONLINE 0 0 0 scsi-SATA_ST3000DM001-9YN_W1F0LCC8 ONLINE 0 0 0 scsi-SATA_ST3000DM001-9YN_W1F0LBXZ ONLINE 0 0 0

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• zfs raidz1-0 corrupted data, all disks are online

  - by gkcr2d2

  My zfs pool "datas" is unavailable but all my disks are online. Do you know how the problem can be fixed? root@oxygen:~# zpool status pool: datas state: UNAVAIL scan: none requested config: NAME STATE READ WRITE CKSUM datas UNAVAIL 0 0 0 insufficient replicas raidz1-0 UNAVAIL 0 0 0 corrupted data scsi-SATA_ST3000DM001-9YN_W1F0LBVX ONLINE 0 0 0 scsi-SATA_ST3000DM001-9YN_W1F0KYX9 ONLINE 0 0 0 scsi-SATA_ST3000DM001-9YN_W1F0LCC8 ONLINE 0 0 0 scsi-SATA_ST3000DM001-9YN_W1F0LBXZ ONLINE 0 0 0

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• SEO Basics - Keywords

  How to use keywords for a better search engine position? First, analyze carefully the keywords related to your website. Choose 2 or 3 keywords and write them down.

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• no wifi after grub 2 crash

  - by Omu

  on ubuntu 10.10 I used StartupManager to set windows 7 as the default boot, also chosen the 1024x768 resolution, 16 bit, time: 3sec, and checked "show splash screen". after the restart there was no GRUB menu at all, windows 7 booted, and in windows the clock was 0:03 instead of 10:03, also the wifi doesn't sees any connections anymore I reinstalled ubuntu 10.10 so the GRUB menu is back, changed the clock back from BIOS, but my wifi doesn't sees any connections in windows nor in ubuntu (I write this from another computer)

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• How to get the blocks seen by the player?

  - by m4tx

  I'm writing a Minecraft-like game using Ogre engine and I have a problem. I must optimize my game, because when I try draw 10000 blocks, I have 2 FPS... So, I got the idea that blocks display of the plane and to hide the invisible blocks. But I have a problem - how do I know which blocks at a time are visible to the player? And - if you know of other optimization methods for such a game, write what and how to use them in Ogre.

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• How to Make a Website That Actually Works

  About six weeks ago, one of my blog readers told me something that really pissed me off: "you don't put your actions where your mouth is. You write all these great articles on how to create effective websites but your own site doesn't follow the advice you give." She was right.

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• What is the best method to start understanding BIG project source code? [closed]

  - by Mr.32

  Possible Duplicate: How do you dive into large code bases? Sometimes before developing new products we need to understand some existing products or existing source code. Sometimes to write another small module of that big project we need to understand that big source code. In our case we need to study and understand a project with lots of files and folders. What is the easiest and most comfortable way to do it ? (especially for C and C++ and under Linux)

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• TOP 25 Most Dangerous Software Errors for 2010

  - by TATWORTH

  A top 25 most dangerous list of software errors has been published at http://www.sans.org/top25-software-errors/ Insterestingly the top error listed was cross site scripting. So what do you do if have to accept HTML input? I suggest that write a white list filter function to allow through only acceptable mark-up. A basis for such a function can be found in the common filter function at http://commonfilter.codeplex.com/

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• The Large Hadron Collider switches on- the end of the world will be powered by GNU/Linux

  <b>Free Software Magazine:</b> "The Large Hadron Collider (LHC) is up and running as I write and as far as I can tell I&#8217;m still here, so it looks like the doomsayers were a little premature. Unless I&#8217;m writing this piece from the far side of the singularity of a black hole in a parallel universe."

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• Why do we need to put N before strings in Microsoft SQL Server?

  - by user61752

  I'm learning T-SQL. From the examples I've seen, to insert text in a varchar() cell, I can write just the string to insert, but for nvarchar() cells, every example prefix the strings with the letter N. I tried the following query on a table which has nvarchar() rows, and it works fine, so the prefix N is not required: insert into [TableName] values ('Hello', 'World') Why the strings are prefixed with N in every example I've seen? What are the pros or cons of using this prefix?

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• How to set system-wide proxy address using shell script?

  - by skg

  I want to set system Proxy address through my Qt application. So i was wondering if i could write a script which can be executed by my application every time to change the proxy address. I tried : #! /bin/sh echo "# Generated by Application" export $1 echo "Proxy Address ${1} but this script was not successful. I think it was unable to execute "export" command. Can anyone help me resolving this issue ?

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• Programmatically Getting Name of Front-most (currently running) application in Unity

  - by NHDaly

  I am trying to write a script that executes differently depending on the currently active program, and I am wondering if there is any way to find this programatically. For example, I come from the Mac world, and in Apple's Applescript you can do the following: set appPath to the path to the frontmost application set appName to the name of file appPath and that will give you the name of the currently running application. Is there anything similar that I can do in ubuntu-land? Thanks!

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• mounted smb share throu fstab, gets read only on added files

  - by Jocke

  I mounted my nas in ubuntu 12.10 and it works with read/write, but when I'm adding a file or directory that file gets read only permissions. My fstab mount looks like this: //192.168.0.12/share/ /media/nas cifs credentials=/home/jocke/.smbcredentials,iocharset=utf8,file_mode=0777,dir_mode=0777 0 0 If I mount the smb share manualy through the GUI it works, but not through fstab. What I am doing wrong?

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• What are some good examples of Powernap scripts and its use?

  - by shootingstars

  I would like to use powernap for putting my media server into suspend mode, and I haven't been able to find any example /etc/powernap/action scripts out there, except these: one two three Does anybody have a good script or recommend particular techniques with its use? From the comments of the default /etc/powernap/action script: # You may do one of: # 1) Write your own custom script below and make this file executable, # calling some specific action, such as: # /usr/sbin/pm-suspend # /usr/sbin/pm-hibernate # /sbin/poweroff # echo 'I am wasting electricity' | mail [email protected] # 2) Replace this file with an executable script or binary # 3) Symlink this file to some other executable script or binary

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• Dual Frame Buffer on Ubuntu 12.04 Intel HD Graphics 4600 i7-4770

  - by user3692512

  I have 2 monitors connected to the PC, one in HDMI, one in DVI. I have Intel integrated graphics HD4600 Now as far my understanding, both the monitors is connected at the same framebuffer /dev/fb0 How can I detach them and create 2 frame buffers at startup, so that I can directly write to the second monitor, by writing on the /dev/fb1, and not hamper the /dev/fb0, so that x-server can run normally on that?

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• Interviewing Process (using blank paper etc)

  - by MJH

  I am curious to know why do companies hand you a blank paper and ask you to write code? This confuses me, because these days intellisense, google, stackoverflow etc are common sources to look up syntax and / or IDE gives you a colored indicator if your syntax is wrong. I usually get stressed out during these situations. I am curious to know opinions of other developers. I am posting this on this forum, hoping to get helpful feedback from other experienced developers.

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• Build One Way Links With Article Marketing

  Lots of web developers write web content as a strategy to build one way links with article marketing. In terms of link quality, one way links are the most valuable of all. They do not pose any control difficulties, they are built on quality, they do not require reciprocity and they boost up quality traffic. The possibility to build one way links with article marketing keeps lots of web developers focused and highly professional in terms of content quality.

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• Interactive map using javascript [on hold]

  - by Denis

  Im trying to learn HTML and javascript. But i cant find any information about how to create interactive map/picture using javascript. Ex. I take a map where is a part of my town and write some information about like few buildings there, so after i put my mouse over those buildings the information will be displayed. It should look similar to this http://davidlynch.org/projects/maphilight/docs/demo_usa.html I need to use the javascript to make it done.

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