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• Tulsa SharePoint Interest Group – Meeting Reminder

  - by dmccollough

  Just a quick reminder that the Tulsa SharePoint Interest Group is having it’s monthly meeting this coming Monday April 12th @6:00 PM.   Please come see Corey Roth’s presentation on SharePoint 2010 Business Connectivity Services   We are going to be giving away some GREAT prizes XBox 360 – Halo 3 ODST Telerik Premium Collection ($1,300.00 value) ReSharper ($199.00 value) SQL Sets ($149.00 value) 64 Bit Windows 7 Infragistics NetAdvantage for .NET Platform ($1,195.00 value) You can click here for more information. You can click here to RSVP for the meeting.

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• Tulsa SharePoint Interest Group - How SharePoint 2010 Business Connectivity Services could change yo

  - by dmccollough

  Bio: Corey Roth is a consultant at Stonebridge specializing in SharePoint solutions in the Oil & Gas Industry. He has ten plus years of experience delivering solutions in the energy, travel, advertising and consumer electronics verticals. Corey has always focused on rapid adoption of new Microsoft technologies including Visual Studio 2010, SharePoint 2010, .NET Framework 4.0, LINQ, and SilverLight. He also contributed greatly to the beta phases of Visual Studio 2005. For his contributions, he was awarded the Microsoft Award for Customer Excellence (ACE). Corey is a graduate of Oklahoma State University. Corey is a member of the .NET Mafia (www.dotnetmafia.com) where he blogs about the latest technology and SharePoint. Abstract: How SharePoint 2010 Business Connectivity Services could change your life - The New BDC How many hours have your wasted building simple ASP.NET applications to do nothing more than simple CRUD operations against a database.  Many tools have made this easier, but now it's so easy, you'll be up and running in minutes.  This session will show you hot easy it is to get started integrating external data from your line of business systems in SharePoint 2010.  You will learn how to register an external content type using SharePoint Designer based upon a database table or web service and then build an external list.  With external lists, you will see how you can perform CRUD operations on your line of business directly from SharePoint without ever having to do manual configuration in XML files.  Finally, we will walk through how to create custom edit forms for your list using InfoPath 2010. Agenda: 6pm - 6:30 Pizza and Mingle - Sponsored by TekSystems 6:30 - 6:45 Announcements 6:45 - 7:45 Presentation! 7:45 - 8:00 Drawings and Door Prizes Location: TCC (Tulsa Community College) Northeast Campus 3727 East Apache Tulsa, OK 74115 918-594-8000 Campus Map | Live | Yahoo | Google | MapQuest Door Prizes: We will be giving away one of each of these: XBox 360 - Halo 3 ODST Telerik Premium Collection ($1300.00 value) ReSharper ($199.00 value) SQLSets ($149.00 value) 64 bit Windows 7 Introducing Windows 7 for Developers Developing Service-Oriented AJAX Applications on the Microsoft Platform Sponsors: Thanks to our sponsors: TekSystems - Thanks for purchasing the Pizza for our meetings. ISOCentric - Thanks for providing us hosting for the groups web site. Tulsa Community College - Thanks for providing us a place to have our meetings. NEVRON - Thanks for providing us prizes to give away. INETA.org - For allowing us to be a Charter Member and providing awesome Speakers! PERPETUUM Software - Thanks for providing us prizes to give away. Telerik - Thanks for providing us prizes to give away. GrapeCity - Thanks for providing us prizes to give away. SQLSets - Thanks for providing us prizes to give away. K2 - Thanks for providing us prizes to give away. Microsoft - For providing us with a lot of support and product giveaways! Orielly books - For providing us with books and discounts. Wrox books - For providing us with books and discounts. Have any special requests? Let us know at this link: http://tinyurl.com/lg5o38. RSVP for this month's meeting by responding to this thread: http://tinyurl.com/yafkzel . (Must be logged in to the site) Be SURE to RSVP no later than Noon on April 12th and you will get an extra entry for the prize drawings! So, do it now, before you forget and miss out! Show up for the first time or bring a new buddy and you both get TWO extra entries!

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• Open FDF document on Mac

  - by Corey Floyd

  I'm having the issue documented here: http://forums.adobe.com/thread/445594 When I try to open a FDF, I just get a pop up over and over again which asks me if I want to open the form. One possible solution is downgrading to Safari 3, but that is not proven to work. I thought maybe I could get the FDF to open in FireFox, but changing the default browser does not affect Reader, it still attempts to open the FDF in Safari (strange). So, does anyone know of a way to open this form? Thanks -Corey

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• dpkg behaving strangely?

  - by Tom Henderson

  When I use apt to get a package, I have been receiving the same error message. Here is an example trying to install wicd (which is already installed): Reading package lists... Building dependency tree... Reading state information... wicd is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded. 3 not fully installed or removed. After this operation, 0B of additional disk space will be used. Setting up tex-common (2.06) ... debconf: unable to initialize frontend: Dialog debconf: (Dialog frontend requires a screen at least 13 lines tall and 31 columns wide.) debconf: falling back to frontend: Readline Running mktexlsr. This may take some time... done. No packages found matching texlive-base. dpkg: error processing tex-common (--configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of texlive-binaries: texlive-binaries depends on tex-common (>= 2.00); however: Package tex-common is not configured yet. dpkg: error processing texlive-binaries (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of dvipng: dvipng depends on texlive-base-bin; however: Package texlive-base-bin is not installed. Package texlive-binaries which provides texlive-base-bin is not configured yet. dpkg: error processing dvipng (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates its a followup error from a previous failure. No apport report written because the error message indicates its a followup error from a previous failure. Errors were encountered while processing: tex-common texlive-binaries dvipng E: Sub-process /usr/bin/dpkg returned an error code (1) I'm not sure if this is a problem with apt or with dpkg, but it certainly doesn't look good!

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• How can I draw an arrow at the edge of the screen pointing to an object that is off screen?

  - by Adam Henderson

  I am wishing to do what is described in this topic: http://www.allegro.cc/forums/print-thread/283220 I have attempted a variety of the methods mentioned here. First I tried to use the method described by Carrus85: Just take the ratio of the two triangle hypontenuses (doesn't matter which triagle you use for the other, I suggest point 1 and point 2 as the distance you calculate). This will give you the aspect ratio percentage of the triangle in the corner from the larger triangle. Then you simply multiply deltax by that value to get the x-coordinate offset, and deltay by that value to get the y-coordinate offset. But I could not find a way to calculate how far the object is away from the edge of the screen. I then tried using ray casting (which I have never done before) suggested by 23yrold3yrold: Fire a ray from the center of the screen to the offscreen object. Calculate where on the rectangle the ray intersects. There's your coordinates. I first calculated the hypotenuse of the triangle formed by the difference in x and y positions of the two points. I used this to create a unit vector along that line. I looped through that vector until either the x coordinate or the y coordinate was off the screen. The two current x and y values then form the x and y of the arrow. Here is the code for my ray casting method (written in C++ and Allegro 5) void renderArrows(Object* i) { float x1 = i->getX() + (i->getWidth() / 2); float y1 = i->getY() + (i->getHeight() / 2); float x2 = screenCentreX; float y2 = ScreenCentreY; float dx = x2 - x1; float dy = y2 - y1; float hypotSquared = (dx * dx) + (dy * dy); float hypot = sqrt(hypotSquared); float unitX = dx / hypot; float unitY = dy / hypot; float rayX = x2 - view->getViewportX(); float rayY = y2 - view->getViewportY(); float arrowX = 0; float arrowY = 0; bool posFound = false; while(posFound == false) { rayX += unitX; rayY += unitY; if(rayX <= 0 || rayX >= screenWidth || rayY <= 0 || rayY >= screenHeight) { arrowX = rayX; arrowY = rayY; posFound = true; } } al_draw_bitmap(sprite, arrowX - spriteWidth, arrowY - spriteHeight, 0); } This was relatively successful. Arrows are displayed in the bottom right section of the screen when objects are located above and left of the screen as if the locations of the where the arrows are drawn have been rotated 180 degrees around the center of the screen. I assumed this was due to the fact that when I was calculating the hypotenuse of the triangle, it would always be positive regardless of whether or not the difference in x or difference in y is negative. Thinking about it, ray casting does not seem like a good way of solving the problem (due to the fact that it involves using sqrt() and a large for loop). Any help finding a suitable solution would be greatly appreciated, Thanks Adam

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• Silverlight Cream for April 27, 2010 -- #849

  - by Dave Campbell

  In this Issue: Mike Snow, Kunal Chowdhury, Giorgetti Alessandro, Alexander Strauss, Corey Schuman, Kirupa, John Papa, Miro Miroslavov, Michael Washington, and Jeremy Likness. Shoutouts: Erik Mork and crew have posted their latest This Week In Silverlight April 23 2010 The Silverlight Team announced Microsoft releases Silverlight-powered Windows Intune beta Jesse Liberty has posted his UK and Ireland Slides and Links The Expression Blend and Design Blog reports a Minor Update to The Expression Blend 4 Release Candidate From SilverlightCream.com: Silverlight Tip of the Day #6 – Toast Notifications Mike Snow has Tip #6 up today and it's about Toast notifications in OOB apps: Restrictions, creation, showing, and the code. Silverlight Tutorials Chapter 2: Introduction to Silverlight Application Development Part 2 of Kunal Chowdhury's Introductory tutorial set is up ... he's covering how to create a Silverlight project, what's contained in it, and creating a User Control. Silverlight, M-V-VM ... and IoC - part 3 Giorgetti Alessandro has part 3 of his Silverlight, IOC, and MVVM series up... this one with an example using the code discussed previously. The project is on CodePlex, and he's not done with the series. Application Partitioning with MEF, Silverlight and Windows Azure – Part I Alexander Strauss is discussing Silverlight and MEF for loosely-coupled and partitioned apps. He's also using Azure in this discussion. geekSpeak Recording - Five Key Developer Features in Expression Blend with Corey Schuman Check out the latest geekSpeak on Channel 9 where Corey Schuman talks about the 5 key Developer Features in Expression Blend that will improve your productivity. Using the ChangePropertyAction Kirupa is discussing and demonstrating ChangePropertyAction. Check out the demo near the top of the post, then read how to do it, and download the source. 3 Free Silverlight Demos John Papa blogged about the 2 demos (with source) that have been updated to SL4, and a new one all by Microsoft Luminaries Karen Corby, Adam Kinney, Mark Rideout, Jesse Bishop, and John Papa: "ScrapBook", "HTML and Video Puzzle", and "Rich Notepad". Floating Visual Elements I like Miro Miroslavov's comment: "every Silverlight application “must” have some objects floating around in a quite 3D manner" :) ... well they do that on the CompletIT site, and this is part 2 of their explanation of how all that goodness works. MVVM – A Total Design Change Of Your Application With No Code With some Blend goodness, Michael Washington completely reorganizes the UI of an MVVM application without touching any code ... project included MVVM with Transaction and View Locator Example Jeremy Likness responded to reader requests and has an example up, with explanation, of marrying his last two posts: transactions with MVVM and View Model Locator. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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• Craftsmanship Tour: Day 2 Obtiva

  - by Liam McLennan

  I like Chicago. It is a great city for travellers. From the moment I got off the plane at O’Hare everything was easy. I took the train to ‘the Loop’ and walked around the corner to my hotel, Hotel Blake on Dearborn St. Sadly, the elevated train lines in downtown Chicago remind me of ‘Shall We Dance’. Hotel Blake is excellent (except for the breakfast) and the concierge directed me to a pizza place called Lou Malnati's for Chicago style deep-dish pizza. Lou Malnati’s would be a great place to go with a group of friends. I felt strange dining there by myself, but the food and service were excellent. As usual in the United States the portion was so large that I could not finish it, but oh how I tried. Dave Hoover, who invited me to Obtiva for the day, had asked me to arrive at 9:45am. I was up early and had some time to kill so I stopped at the Willis Tower, since it was on my way to the office. Willis Tower is 1,451 feet (442 m) tall and has an observation deck at the top. Around the observation deck are a set of acrylic boxes, protruding from the side of the building. Brave soles can walk out on the perspex and look between their feet all the way down to the street. It is unnerving. Obtiva is a progressive, craftsmanship-focused software development company in downtown Chicago. Dave even wrote a book, Apprenticeship Patterns, that provides a catalogue of patterns to assist aspiring software craftsmen to achieve their goals. I spent the morning working in Obtiva’s software studio, an open xp-style office that houses Obtiva’s in-house development team. For lunch Dave Hoover, Corey Haines, Cory Foy and I went to a local Greek restaurant (not Dancing Zorbas). Dave, Corey and Cory are three smart and motivated guys and I found their ideas enlightening. It was especially great to chat with Corey Haines since he was the inspiration for my craftsmanship tour in the first place. After lunch I recorded a brief interview with Dave. Unfortunately, the battery in my camera went flat so I missed recording some interesting stuff. Interview with Dave Hoover In the evening Obtiva hosted an rspec hackfest with David Chelimsky and others. This was an excellent opportunity to be around some of the very best ruby programmers. At 10pm I went back to my hotel to get some rest before my train north the next morning.

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• "AttributeError: fileno" when attemping to import from pyevolve

  - by Corey Sunwold

  I just installed Pyevolve using easy_install and I am getting errors trying to run my first program. I first tried copy and pasting the source code of the first example but this is what I receive when I attempt to run it: Traceback (most recent call last): File "/home/corey/CTest/first_intro.py", line 3, in from pyevolve import G1DList File "/usr/lib/python2.6/site-packages/Pyevolve-0.5-py2.6.egg/pyevolve/init.py", line 15, in File "/usr/lib/python2.6/site-packages/Pyevolve-0.5-py2.6.egg/pyevolve/Consts.py", line 240, in import Selectors File "/usr/lib/python2.6/site-packages/Pyevolve-0.5-py2.6.egg/pyevolve/Selectors.py", line 12, in File "/usr/lib/python2.6/site-packages/Pyevolve-0.5-py2.6.egg/pyevolve/GPopulation.py", line 11, in File "/usr/lib/python2.6/site-packages/Pyevolve-0.5-py2.6.egg/pyevolve/FunctionSlot.py", line 14, in File "/usr/lib/python2.6/site-packages/Pyevolve-0.5-py2.6.egg/pyevolve/Util.py", line 20, in AttributeError: fileno I am running python 2.6 on Fedora 11 X86_64.

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• Does Windows Azure support the Application Warm-Up module or something similar?

  - by Corey O'Brien

  We have a Web Role that we are hosting in Windows Azure that uses an old ASMX based Web Reference to contact an external system. The Web Reference proxy code is big enough that instantiating it the first time has a significant cost. We'd like to be able to have this run when the Web Role starts instead of on the first request. I know IIS 7.5 has an Application Warm-Up module that would allow us to achieve this, but I'm having trouble figuring out if something similar exists with hosting on Windows Azure. Thanks, Corey

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• How can I keep a WPF Image from blocking if the ImageSource references an unreachable Url?

  - by Corey O'Brien

  I'm writing a WPF application and trying to bind an image to my view model with the following XAML: <Image Source="{Binding Author.IconUrl, IsAsync=True}" /> The problem is that the image URLs are defined by users and can often refer to images hosted on intranet web servers. When the WPF application is run remotely, it locks up while trying to resolve the images that are now unreachable. I thought the "IsAsync" binding property would cause the load to happen in the background, but it appears that the DNS resolution may still happen in the main thread? What can I do to keep my app from locking, even if the images are unreachable? Thanks, Corey

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• NHibernate Legacy Database Mappings Impossible?

  - by Corey Coogan

  I'm hoping someone can help me with mapping a legacy database. The problem I'm describing here has plagued others, yet I was unable to find a real good solution around the web. DISCLAIMER: this is a legacy DB. I have no control over the composite keys. They suck and can't be changed no matter much you tell me they suck. I have 2 tables, both with composite keys. One of the keys from one table is used as part of the key to get a collection from the other table. In short, the keys don't fully match between the table. ClassB is used everywhere I would like to avoid adding properties for the sake of this mapping if possible. public class ClassA { //[PK] public string SsoUid; //[PK] public string PolicyNumber; public IList<ClassB> Others; //more properties.... } public class ClassB { //[PK] public string PolicyNumber; //[PK] public string PolicyDateTime; //more properties } I want to get an instance of ClassA and get all ClassB rows that match PolicyNumber. I am trying to get something going with a one-to-many, but I realize that this may technically be a many-to-many that I am just treating as one-to-many. I've tried using an association class but didn't get far enough to see if it works. I'm new to these more complex mappings and am looking for advice. I'm open to pretty much any ideas. Thanks, Corey

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• Solutions for working with multiple branches in ASP.Net

  - by Corey McKinnon

  At work, we are often working on multiple branches of our product at one time. For example, right now, we have a maintenance branch, a branch with code just going to QA, and a branch for a new major initiative, that won't be merged for some time now. Our web project is set up to use IIS, so every time we switch to a different branch, we have to go in to IIS Admin and change the path on the virtual directory, then reset IIS, and sometimes even restart Visual Studio, to avoid getting build errors. Is there any way to simplify this, other than not having our web project set up as a virtual directory? I'm not sure we want to make that change at this point. What do you do to make this easier, assuming you do this? Corey @RedWolves, virtual machines would definitely work, but I'm not sure it would be any simpler, especially for some of the other developers on my team, which is partly why I'm looking for more simplicity. @Dan, we're not able to change source control providers, unfortunately. @pix0r, that's something I'll try when I get back to work. Thanks for the suggestion. @Haacked, I'll have to give that a try too, but I think we have some issues with why that won't work (I can't remember exactly why right now; this application was originally written in .Net 1.1, pre-Cassini, and I can't remember if we tried it when we upgraded to 2.0 or not). Thanks all for the responses so far.

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• Virtual Machine Manager 2012 is showing 0% CPU usage

  - by Mark Henderson

  When trying to do some science to answer this question, I took a Windows 7 guest on a Server 2008 R2 host being managed by SCVMM 2012 and ran Prime95 on it to just generate some CPU usage. Here's the Guest: The Hyper-V host shows 12%, which is 1/8 cores (which is what is allocated), so that's looking correct: But SCVMM is showing 0%: I have left the stress test running for a long time, thinking that maybe SCVMM averages out over a long time (I thought it was 9 minutes, but I've been known to be wrong; just don't tell my wife). Why is SCVMM showing 0% when everything else seems to disagree?

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• Download HP Power Protector for ESXi

  - by Mark Henderson

  The HP PowerProtector user guide states that to install the HP PowerProtector client on an ESXi Host: Download the latest version of HPPP from the HP website (http://www.hp.com/go/rackandpower). The ESXi Server is automatically detected, and a shutdown command script is generated. However in typical HP fashion, after clicking through no less than 6 different links to get to the downloads page, I am presented with: http://h18004.www1.hp.com/products/servers/proliantstorage/power-protection/software/power-protector/pp-dl.html HP Power Protector (HPPP) - Windows HP Power Protector (HPPP) - Linux x86 HP Power Protector (HPPP) - Linux x64 HP Power Protector (HPPP) - Linux IA64 HP Power Protector (HPPP) - HPUX The Linux packages contain an RPM and in no way resemble what is in the HP documentation. None of these are labelled for ESXi. Does anyone know where or how to get the HP Power Protector ESXi client installed?

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• Re-Calibrate Toshiba battery meter with Windows 7

  - by Mark Henderson

  I have a Toshiba U300 laptop. Back in the olden days (circa-2000) you could re-calibrate the battery meter from the BIOS when your battery was no longer reading accurately. My battery was shot, so I bought a brand new one, however Windows 7 still seems to count down the battery life in at the same speed as the old one did. This time, when it alleged 0%, I turned the laptop back on and got another 90 minutes of life out of it, at 0%. Is there a tool or utility for Toshiba laptops that can fix it back to being accurate? I've read the other threads on SU about cycling the battery but that just doesn't seem to do it in this case. Update: After the last cycle, the battery meter now reads 100% but the indicator on the front of the laptop is still orange (indicating not fully charged)

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• Smart card / auditable access for rack KVM tray

  - by Mark Henderson

  Is there such a thing as a KVM Tray for a standard 19" rack whose use can be validated by a smartcard (or some other auditable authentication method)? It looks like we have a security requirement where just because users have a key to the rack doesn't mean they will be allowed to use the console inside the rack, and rather than just lock the console (and keep track of who has keys), we would prefer to be able to audit the actual user that was attached at the KVM. (It's worth mentioning that I'm aware of the Raritan devices, but they surely can't be the only ones) (If these things existed, I don't think half of the tratoirs that somehow manage to infiltrate CTU on the TV show 24 would ever get away with anything)

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• Thinking of Powerline adapters for networking

  - by Henderson McCoy

  will powerline work as good as wifi I am now in a large house (renting a room) and the router is in the front of the house and I am in the back. Don't know if wifi will have the range and stability so I am looking at all the alternatives from running a long cable to powerline. looks like a powerline adapter set will cost about $50 http://www.bestbuy.com/site/Actiontec---500-Mbps-Powerline-Home-Theater-Network-Adapter-Kit/5215483.p?id=1218625358741&skuId=5215483 has anyone use these or other powerline adapters? how is powerlines speed? Are they more stable then wifi? powerline cost is good i am just currious about the performance

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• Incredibly high latency for Ubuntu guest on Hyper-V

  - by Mark Henderson

  I've got several Ubuntu 10.04 virtual machines running as Hyper-V guests on Windows Server 2008 R2 SP1 and they're all perfectly fine. Today I installed my first Ubuntu 11.10 virtual machine and I'm seeing rediculous pings: These servers are all connected via gigabit to a local LAN, with almost no network traffic at all1, with a legacy network adapter in Hyper-V. I'm a bit of an Ubuntu n00b so I don't really know where to go from here. Any ideas? free -m reports: total used free shared buffers cached Mem: 485 470 15 0 63 299 -/+ buffers/cache: 107 378 Swap: 507 20 487 This is within a few mb of our other Ubuntu servers that are on 10.04. I removed the Legacy NIC and installed a Synthetic one in Hyper-V and this did improve the numbers, in that they're around 10-30ms now, but I would still be expecting <1ms response times. 1As a comparison, I have another Ubuntu 10.04 guest on Hyper-V almost 1,000km away that has a ping of 33ms

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• Where can I find video resources of people programming?

  - by Corey

  This might be a strange question. I'm looking for videos of people actively coding something while explaining it. However, I don't want is a beginner video that delves into what variables and objects are. Nick Gravelyn's tile engine tutorial is a great example of what I'm looking for. (He actually used to host the full, unbroken video files in his site's archive, but I guess he took them down...) I tend to learn best by "action" examples; it's difficult for me to learn by reading through documentation and text tutorials, but if I see somebody actively doing a task, I can immediately register it and apply it myself. I'm hard-of-hearing, so I would really prefer that if the video has a lot of talking, it have captioning or subtitling of some sort, or at the very least, a transcript. The tile engine videos did not have captions, but the code he was writing was very self-documenting, so I understood it for the most part. I've gone through most of the relevant GoogleDevelopers and GoogleTechTalks videos on Youtube, so those need not apply. Are there any resources out there, or even websites dedicated to this kind of thing?

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• Top Down RPG Movement w/ Correction?

  - by Corey Ogburn

  I would hope that we have all played Zelda: A Link to the Past, please correct me if I'm wrong, but I want to emulate that kind of 2D, top-down character movement with a touch of correction. It has been done in other games, but I feel this reference would be the easiest to relate to. More specifically the kind of movement and correction I'm talking about is: Floating movement not restricted to tile based movement like Pokemon and other games where one tap of the movement pad moves you one square in that cardinal direction. This floating movement should be able to achieve diagonal motion. If you're walking West and you come to a wall that is diagonal in a North East/South West fashion, you are corrected into a South West movement even if you continue holding left (West) on the controller. This should work for both diagonals correcting in both directions. If you're a few pixels off from walking squarely into a door or hallway, you are corrected into walking through the hall or down the hallway, i.e. bumping into the corner causes you to be pushed into the hall/door. I've hunted for efficient ways to achieve this and have had no luck. To be clear I'm talking about the human character's movement, not an NPC's movement. Are their resources available on this kind of movement? Equations or algorithms explained on a wiki or something? I'm using the XNA Framework, is there anything in it to help with this?

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• Why is business-class storage so expensive?

  - by Mark Henderson

  This is a Canonical Question about the Cost of Enterprise Storage. See also the following question: What's the best way to explain storage issues to developers and other users Regarding general questions like: Why do I have to pay 50 bucks a month per extra gigabyte of storage? Our file server is always running out of space, why doesn't our sysadmin just throw an extra 1TB drive in there? Why is SAN equipment so expensive? The Answers here will attempt to provide a better understanding of how enterprise-level storage works and what influences the price. If you can expand on the Question or provide insight as to the Answer, please post.

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• Java Slick2d - How to translate mouse coordinates to world coordinates

  - by Corey

  I am translating in my main class render. How do I get the mouse position where my mouse actually is after I scroll the screen public void render(GameContainer gc, Graphics g) throws SlickException { float centerX = 800/2; float centerY = 600/2; g.translate(centerX, centerY); g.translate(-player.playerX, -player.playerY); gen.render(g); player.render(g); } playerX = 800 /2 - sprite.getWidth(); playerY = 600 /2 - sprite.getHeight(); Image to help with explanation I tried implementing a camera but it seems no matter what I can't get the mouse position. I was told to do this worldX = mouseX + camX; but it didn't work the mouse was still off. Here is my Camera class if that helps: public class Camera { public float camX; public float camY; Player player; public void init() { player = new Player(); } public void update(GameContainer gc, int delta) { Input input = gc.getInput(); if(input.isKeyDown(Input.KEY_W)) { camY -= player.speed * delta; } if(input.isKeyDown(Input.KEY_S)) { camY += player.speed * delta; } if(input.isKeyDown(Input.KEY_A)) { camX -= player.speed * delta; } if(input.isKeyDown(Input.KEY_D)) { camX += player.speed * delta; } } Code used to convert mouse worldX = (int) (mouseX + cam.camX); worldY = (int) (mouseY + cam.camY);

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• CSS practices: negative positioning

  - by Corey

  I'm somewhat of a novice to CSS. Anyway, I noticed that an extremely common method used in CSS is to have negative or off-screen positioning, whether it be to hide text or preload images or what have you. Even on SE sites, like StackOverflow and this website, have #hlogo a { text-indent: -999999em } set in their CSS. So I guess I have a few questions. is this valid CSS? or is it just a "hack"? are there downsides to doing things this way? why is this so common? aren't there better ways to hide content?

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• How do you differentiate between "box," "machine," "computer" and whatever else?

  - by Corey

  There seems to be a few terms for referring to a computer, especially in the tech world. Different terms seem to be used based on technical expertise. When talking with people with some technical knowledge, I'll refer to it as a machine. When talking to non-technical people (family, friends) I'll call it a computer. On the rare occasion I'm talking about servers, I might call it a box, but even then I'll probably still call it a machine. Is that just me, or do there exist rules already for what to call a computer?

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• Running multiple services on different servers with IPv6 and a FQDN

  - by Mark Henderson

  One of the things NAT has permitted us to do in the past decade is split physical services onto different servers whilst hiding behind a single interface. For example, I have example.com behind a NAT on 192.0.2.10. I port-forward :80 and :443 to my web server. I'm also port forward :25 to my mail server, and :3389 to a terminal server and :8080 to the web interface of my computer that downloads torrents, and the story goes on. So I have 5 port forwardings going to 4 different computers on example.com. Then, I go and get me some neat IPv6. I assign example.com an IPv6 address of 2001:db8:88:200::10. That's great for my websites, but I want to go to example.com:8080 to get to my torrents, or example:3389 to log on to my terminal server. How can I do this with IPv6, as there is no NAT. Sure, I could create a bunch of new DNS entries for each new service, but then I have to update all my clients who are used to just typing example.com to get to either the website or the terminal server. My users are dumber than two bricks so they won't remember to connect to rdp.example.com. What options do I have for keeping NAT-style functionality with IPv6? In case you haven't figured it out, the above scenario is not a real scenario for me, or perhaps anyone yet, but it's bound to happen eventually. You know, with devops and all.

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