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• [MINI HOW-TO] Repair Missing External Hard Drive Database Error in WHS

  - by Mysticgeek

  If you’re using external hard drives with your Windows Home Server, they might get unplugged and create an error. Here we look at running the Repair Wizard to quickly fix the issue. If an external drive that is included in your drive pool becomes unplugged or loses power, you might see the following error under Home Network Health when opening the WHS Console. To fix the issue verify the drive has power and is plugged in correctly and click Repair. The wizard launches and you’ll need to agree that you may lose data during the repair of the backup database. In this example it was a simple problem where an external drive became unplugged from the server…so you can close out of the wizard. If you look under Server Storage you can see the drive is missing…To fix the issue verify the drive has power and is plugged in correctly. WHS will add the drive back into the pool and when finished you’ll see it listed as healthy and good to go. Using external drives that are part of your storage pool may not be the best way to have your home built WHS setup, but if you do, expect occasional errors such as this. Similar Articles Productive Geek Tips Find Your Missing USB Drive on Windows XPFixing "BOOTMGR is missing" Error While Trying to Boot Windows VistaSpeed up External USB Hard Drives in Windows VistaRebit Backup Software [Review]Troubleshoot Startup Problems with Startup Repair Tool in Windows 7 & Vista TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips HippoRemote Pro 2.2 Xobni Plus for Outlook All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server Know if Someone Accessed Your Facebook Account Shop for Music with Windows Media Player 12 Access Free Documentaries at BBC Documentaries Rent Cameras In Bulk At CameraRenter Download Songs From MySpace Steve Jobs’ iPhone 4 Keynote Video

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• Why can't I mount this partition?

  - by Mahmoud20070

  I have two hard disks (80 Giga ide and 500 Giga sata) and i installed Ubuntu 11.10 in hard disk 80 giga and give for him 20 gigabyte after that he saw all partition in two hard drivers until one I see it's health in gparted magic and he can see it but can't check it and this photo the problem is on partition sdb5 and I use this command to mount it from terminal and took me this although that this partition working very well in windows and Ubuntu could mount it before please give me any solution unless format or anything well delete my data because it's very important Before when I checked /dev/sdb5, it had errors - now all program didn't appear any errors unless fdisk -l All of my hard disks can be mounted except Partition D or /dev/sdb5. What can I do? I have tried to mount the partition with many different programs like Gparted, KDE Partition Manager, ntfs-3g from the terminal, and the mount command. All of them said something to the effect of: fuse: mount failed: Device or resource busy ...or... one or more block devices are holding /dev/sdb5 I installed Ubuntu 11.10 again today to see if anything had changed. The partition works fine under Windows.

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• New SQLOS features in SQL Server 2012

  - by SQLOS Team

  Here's a quick summary of SQLOS feature enhancements going into SQL Server 2012. Most of these are already in the CTP3 pre-release, except for the Resource Governor enhancements which will be in the release candidate. We've blogged about a couple of these items before. I plan to add detail. Let me know which ones you'd like to see more on: - Memory Manager Redesign: Predictable sizing and governing SQL memory consumption: sp_configure ‘max server memory’ now limits all memory committed by SQL ServerResource Governor governs all SQL memory consumption (other than special cases like buffer pool) Improved scalability of complex queries and operations that make >8K allocations Improved CPU and NUMA locality for memory accesses Single memory manager that handles page allocations of all sizes Consistent Out-of-memory handling & management across different internal components - Optimized Memory Broker for Column Store indexes (Project Apollo) - Resource Governor Support larger scale multi-tenancy by increasing Max. number of resource pools20 -> 64 [for 64-bit] Enable predictable chargeback and isolation by adding a hard cap on CPU usage Enable vertical isolation of machine resources Resource pools can be affinitized to individual or groups of schedulers or to NUMA nodes New DMV for resource pool affinity  - CLR 4 support, adds .NET Framework 4 advantages - sp_server_dianostics Captures diagnostic data and health information about SQL Server to detect potential failures Analyze internal system state Reliable when nothing else is working   - New SQLOS DMVs (in 2008 R2SP1) SQL Server related configuration - New DMVsys.dm_server_services OS related resource configurationNew DMVssys.dm_os_volume_statssys.dm_os_windows_infosys.dm_server_registry XEvents for SQL and OS related Perfmon counters Extend sys.dm_os_sys_info See previous blog posts here and here. - Scale / Mission critical Increased scalability: Support Windows 8 max memory and logical processorsDynamic Memory support in Standard Edition - Hot-Add Memory enabled when virtualized - Various Tier1 Performance Improvements, including reduced instructions for superlatches. Originally posted at http://blogs.msdn.com/b/sqlosteam/

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• Should I make the Cells in a Tiledmap as null when my player hits it

  - by Vishal Kumar

  I am making a Tile Based game using Libgdx. I took the idea from SuperKoalio platformer demo by Mario Zencher. When I wanted to implement Collectables in my game , I simply draw the coins using Tiled Map Editor. When my player hits that, I use to set that cell as null. Someday on this site suggested me not to do so... never use null. I agreed. What can be any other way. If I am using layer.setCell(x,y) to set the cell to any other cell... even if an transparent one .. my player seems to be stopped by an invisible object/hurdle. This is my code: for (Rectangle tile : tiles) { if (koalaRect.overlaps(tile)) { TiledMapTileLayer layer = (TiledMapTileLayer) map.getLayers().get(1); try{ type = layer.getCell((int) tile.x, (int) tile.y).getTile().getProperties().get("tileType").toString(); } catch(Exception e){ System.out.print("Exception in Tiles Property"+e); type="nonbreakable"; } //Let us destroy this cell if(("award".equals(type))){ layer.setCell((int) tile.x, (int) tile.y, null); listener.coin(); score+=100; test = ""+layer.getCell(0, 0).getTile().getProperties().get("tileType"); } //DOING THIS GIVES A BAD EFFECT if(("killer".equals(type))){ //player.health--; //layer.setCell((int) tile.x, (int) tile.y, layer.getCell(20,0)); } // we actually reset the player y-position here // so it is just below/above the tile we collided with // this removes bouncing :) if (player.velocity.y > 0) { player.position.y = (tile.y - Player.height); } Is this a right approach? OR I should create separate Sprite Class called Coin.

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• What does Skyrim Creation Kit's NPC class do?

  - by pseudoname

  I'm trying to change it with the setclass console command Based on the UESP wiki it looks like it just governs stat gain for leveling, but based on the Elder Scrolls wiki it seems to only control their combat AI. Obviously it does at least one or both of those - what does it actually do, and does it do anything else? __ Ex: if change Lydia from warrior1handed to vigilantcombat1h with the console command 000A2C94.setclass 0010bfef will it have any unintended side effects that aren't immediately apparent other than letting her use the alteration and healing spells I just gave her with console and setting her stats in a way that works for that? Will it do something weird like mess with her factions or ability to join as my follower? Or mess with her health scaling as she levels? Something hard to notice until alot of time went by? @desaivv* I was trying to do it with 000A2C94.setclass 0010bfef wasn't sure if it'd cause hidden issues only showing after hours of play or if i made a new character with the same bat file. but the creation kit sounds like an idea too, i'll have to see how complicated it is. it might just show what it'd do or have some easier way to change her behavior to add spells. I'll try it and see if anything obvious shows up short term just wasn't sure if it had known long term problems

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• Site Web Analytics not updating Sharepoint 2010

  - by Rohit Gupta

  If you facing the issue that the web Analytics Reports in SharePoint 2010 Central Administration is not updating data. When you go to your site > site settings > Site Web Analytics reports or Site Collection Analytics reports  You get old data as in the ribbon displayed "Data Last Updated: 12/13/2010 2:00:20 AM" Please insure that the following things are covered: Insure that Usage and Data Health Data Collection service is configured correctly. Log Collection Schedule is configured correctly Microsoft Sharepoint Foundation Usage Data Import and Microsoft SharePoint Foundation Usage Data Processing Timer jobs are configured to run at regular intervals One last important Timer job is the Web Analytics Trigger Workflows Timer Job insure that this timer job is enabled and scheduled to run at regular intervals (for each site that you need analytics for). After you have insured that the web analytics service configuration is working fine and the Usage Data Import job is importing the *.usage files from the ULS LOGS folder into the WSS_Logging database, and that all the required timer jobs are running as expected… wait for a day for the report to get updated… the report gets updated automatically at 2:00 am in the morning… and i could not find a way to control the schedule for this report update job. So be sure to wait for a day before giving up :)

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• Working with fubar/refuctored code

  - by Keyo

  I'm working with some code which was written by a contractor who left a year ago leaving a number of projects with buggy, disgustingly bad code. This is what I call cowboy PHP, say no more. Ideally I'd like to leave the project as is and never touch it again. Things break, requirements change and it needs to be maintained. Part A needs to be changed. There is a bug I cannot reproduce. Part A is connect to parts B D and E. This kind of work gives me a headache and makes me die a little inside. It kills my motivation and productivity. To be honest I'd say it's affecting my mental health. Perhaps being at the start of my career I'm being naive to think production code should be reasonably clean. I would like to hear from anyone else who has been in this situation before. What did you do to get out of it? I'm thinking long term I might have to find another job. Edit I've moved on from this company now, to a place where idiots are not employed. The code isn't perfect but it's at least manageable and peer reviewed. There are a lot of people in the comments below telling me that software is messy like this. Sure I don't agree with the way some programmers do things but this code was seriously mangled. The guy who wrote it tried to reinvent every wheel he could, and badly. He stopped getting work from us because of his bad code that nobody on the team could stand. If it were easy to refactor I would have. Eventually after many 'just do this small 10minute change' situations had ballooned into hours of lost time (regardless of who on the team was doing the work) my boss finally caved in it was rewritten.

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• Google affecting my SERP Rank?

  - by Asad Moeen

  The following are some of my website's details. Home-page: [thebluewaffles].[com] Keywords: Blue Waffles- Rest of the keywords are post/subject specific. Site Description: Health Articles Blog Site Age: 1.5 years A short history: When I started my website, the few things in my mind when posting content were at-least 500 words on each page and writing of all the articles with to the point information. I didn't go really fast with it which is why I only have about 15 articles in 1.5 years. The SEO strategy was more simple. I shared links through Social Marketing websites and some Article Sharing websites after which I could see my website's rankings in top 5 SERP results. I ranked good enough for about 8 months continuously but didn't keep updating content due to which there were some 3 rough months when no content was posted due to some personal work. The SERPS dropped to 2nd page in April and almost started disappearing in May. I asked a lot of people about it and most came up with the reason of "no updates to site" so I started updating my site again since the day, November has almost started and I see no signs of my website's ranking. Another important point is that when I post a new article, and do a title search in Google, I see it ranks good enough for the first 10 hours and then disappears. What could be wrong here?

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• Working Abroad Advice Needed

  - by RBA

  Hi, First of all, Happy New Year everybody! I wish you for 2011 all the best! For several years I was thinking about to work abroad, and I want to make this step(to work in a/several foreign countries, for several years). I am a Software Developer with a Bachelor of Engineering in Computer Science, with a +4 years of experience in Delphi(and small working experience in other programming languages). Until now I've applied at aprox. 100 positions over the world, and I've been contacted by 4-5 hiring managers. Our technical discussions went good, but then we reached at working visa 'problem'. I don't have legal/health problems, but I don't poses a working permit in other countries except Romania. I've been reading several forums concerning the working visas (here I take out working visa for US or other 'hard to get visa' countries), and there are several steps which companies must do (so I can take out the bureaucracy problem) to make the papers. Concerning the cost of a visa, this goes up to one medium salary from that country(in most of the cases). I've been working for the last years with different clients, from a wide variety of countries, and I don't believe I will have problems with integration in a foreign country So, the problem is that the market don't need Delphi Developers (there is a small amount of open positions on the recruiting sites), and I should start learning other programming language(all the time is better to know other programming languages - but to master it, requires some time) with a higher market 'rank' (Java/C#/etc), OR the problem is only concerning the working visa, and maybe the reticence of the employer to foreign possible candidates? I'm asking this especially for those users who made this step in their life or they want to make it in the future. Best regards,

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• Topeka Dot Net User Group (DNUG) Meeting &ndash; April 6, 2010

  - by Robz / Fervent Coder

  Topeka DNUG is free for anyone to attend! Mark your calendars now! SPEAKER: Troy Tuttle is a self-described pragmatic agilist, and Kanban practitioner, with more than a decade of experience in delivering software in the finance and health industries and as a consultant. He advocates teams improve their performance through pursuit of better practices like continuous integration and automated testing. Troy is the founder of the Kansas City Limited WIP Society and is a speaker at local area groups on team related topics. He currently works as a Project Lead Consultant with AdventureTech Group of Kansas City, KS. TOPIC: Why Kanban? Kanban is receiving a large amount of attention recently. What does it offer compared to other approaches? Answering that question may require you to hit the “reset” button on previously held biases and assumptions. Kanban blends Lean thought with ideas from first generation agile methodologies. To get started with Kanban, we will examine what steps are necessary to establish a transparent, work-limited, pull system. We will highlight the perils of allowing too much work-in-progress and how it affects development performance. Once established, Kanban teams need only a few metrics and tools to monitor their performance and improvement. WHERE: Federal Home Loan Bank Topeka on the Security Benefit Campus – Directions? WHEN: 11:30 AM - 1:00 PM on April 6th, 2010 REGISTER: http://topekadotnet.wufoo.com/forms/topeka-dnug-meeting-attendance/ ADDITIONAL INFO: As always, please sign in and out of FHLBank to help them with their accountability. Please park in the visitors section at the front of the building when you arrive. If  there are no spots in visitors you may park in the overflow lot at the far east end of the facility.  Lunch will be provided and we will have some great door prizes!

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• An experiment: unlimited free trial

  - by Alex.Davies

  The .NET Demon team have just implemented an experiment that is quite a break from Red Gate's normal business model. Instead of the tool expiring after the trial period, it now continues to work, but with a new message that appears after the tool has saved you a certain amount of time. The rationale is that a user that stops using .NET Demon because the trial expired isn't doing anyone any good. We'd much rather people continue using it forever, as long as everyone that finds it useful and can afford it still pays for it. Hopefully the message appearing is annoying enough to achieve that, but not for people to uninstall it. It's true that many companies have tried it before with mixed results, but we have a secret weapon. The perfect nag message? The neat thing for .NET Demon is that we can easily measure exactly how much time .NET Demon has saved you, in terms of unnecessary project builds that Visual Studio would have done. When you press F5, the message shows you the time saved, and then makes you wait a shorter time before starting your application. Confronted with the truth about how amazing .NET Demon is, who can do anything but buy it? The real secret though, is that while you wait, .NET Demon gives you entertainment, in the form of a picture of a cute kitten. I've only had time to embed one kitten so far, but the eventual aim is for a random different kitten to appear each time. The psychological health benefits of a dose of kittens in the daily life of the developer are obvious. My only concern is that people will complain after paying for .NET Demon that the kittens are gone.

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• What are the "least legally restrictive" well-connected countries to host a website?

  - by monster

  NB: I am aware that this question is subjective, as it can't be defined precisely, but the answers should still be "objective": Country name, and what makes it legally safer. EDIT: A) I am located in Germany. B) I am NOT looking for a place to offer pirated Software/Media; no binary on my site, except "profile icon". Hello! I want to start publishing "social" websites / apps, and I found that the biggest initial problem is this: Any and all services I have to depend on, including Domain Registrar, DNS provider, Server/Cloud Provider, CDN Provider, ... even my Insurance Agent, basically say that they can "throw me out" if my website contains "unacceptable" content. It's always phrased in such a way that basically anything can fall under "unacceptable" content. This is very frustrating because you just can't fully control what users post on your "social website", and you so you basically have to expect when you go to bed that your site is going to be gone when you wake up. I've heard a lot of horror stories about this. Since the "Terms Of Service" of all those providers are foremost to protect themselves from legal actions, and those legal actions depend on the country where they are located, it seems like the first step is to find which country is the "safest" to locate a site. "Safest" being defined as, where I am least likely to get in legal trouble with the local authorities, if some user posts something unacceptable in some way. The main restriction is that it should also be a "well-connected" country, because there is no point in being "safe", if my users can't get to my sites, or the latency is unacceptable. I am targeting the English speaking people in any country as my future users.

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• Feature Updates to the Windows Azure Portal

  - by Clint Edmonson

  Lots of activity over at the Windows Azure portal this weekend, including some exciting new features and major improvements to existing features. Here are the highlights: Support for Managing Co-administrators Set up account co-administrators to allow others to share service management duties for each Azure subscription Import/Export support for SQL Databases Export existing SQL Azure databases to blob storage using SQL Server 2012’s BACPAC format. Create a new SQL Azure database from an existing BACPAC stored in blob storage Storage Container Management and Access Control Create blob storage containers directly within the portal Edit their public/private access settings Drill into storage containers and see the blobs contained within them Improved Cloud Service Status Notifications Detailed health status information about cloud services and roles as they transition between states Virtual Machine Experience Enhancements Option to automatically delete corresponding VHD files from blob storage when deleting VM disks Service Bus Management and Monitoring Ability to create and manage service bus Namespaces, Queues, Topics, Relays and Subscriptions Rich monitoring of Topics, Queues, and Subscriptions with detailed and customizable dashboard metrics Entity status (Topic, Queue, or Subscription) can be changed interactively via dashboard Direct links to the Access Control Services (ACS) namespaces when working with service bus access keys Media Services Monitoring Support Monitor encoding jobs that are queued for processing as well as active, failed and queued tasks for encoding jobs The above features are all now live in production and available to use immediately.  If you don’t already have a Windows Azure account, you can sign-up for a free trial and start using them today. Stay tuned to my twitter feed for Windows Azure announcements, updates, and links: @clinted Reference ID: P7VVJCM38V8R

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• c++ How to use angular velocity that derived from inertia and force(torque) in 3d

  - by user1217203

  I am relatively new to game development. May my terminology and description are not appropriate. Please excuse my poor phrasing and help me by giving advice on how to question better if this question seems less fitting. I really appreciate your efforts. Hi. I am having hard time interpreting the set of values I have. I have inertia and force(torque) in terms of x y z. FYI I used x and y coordinates as my ground, flat coordinates and z as my up/down. I am assuming that since f = ma, that angular acceleration must be a = f / m. So I divide my torque by inertia. Then I add those x y z values to my angular velocity variable's x y z. However these x y z values confuse me. Don't I need angle/sec or radian/sec sort of values in order to apply rotation? The x y z values I have seemed to not say anything about radians or angular movement. Question : If I have ( 1, 2, 3 ) or any ( x, y, z ) as my angular velocity, how do I actually apply it as angular movement? FYI Here I am pasting my code : float mass = 100; float devidedMass = 1.0/12 * mass; Vec3 innertia( devidedMass* (_box._size.z*_box._size.z + _box._size.x*_box._size.x), devidedMass* (_box._size.y*_box._size.y + _box._size.x*_box._size.x), devidedMass* (_box._size.y*_box._size.y + _box._size.z*_box._size.z )); box._angAccel += forceAng/innertia; box._angVelo += box._angAccel; box._angAccel.allZero(); source of my inertia calculation http://www.health.uottawa.ca/biomech/courses/apa4311/solids.pdf

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• Class Design - Space Simulator

  - by Peteyslatts

  I have pretty much taught myself everything I know about programming, so while I know how to teach myself (books, internet and reading API's), I'm finding that there hasn't been a whole lot in the way of good programming. So I have two questions: First the broad one: Does anyone have suggestions as to sources for learning about good programming habits and techniques? I'd prefer it if the resource wasn't a 5000 page tome. The more I can read it in installments the better. More specifically: I am finishing up learning the basics of XNA and I want to create a space simulator to test my knowledge. This isn't a full scale simulator, but just something that covers everything I learned. It's also going to be modular so I can build on it, after I get the basics down. One of the early features I want to implement is AI. And I want to take this into account as I'm designing my classes so I can minimize rewriting code. So my question: How should I design ship classes so that both the player and AI can use them? The only idea I have so far is: Create a ship class that contains stats, models, textures, collision data etc. The player and AI would then have the data for position, rotation, health, etc and would base their status off of the ship stats.

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• Building vs buying a server for an academic lab [closed]

  - by Roy

  I'm looking for advice on the classic build vs buy question. We need a new linux server to run Matlab computation on in our lab (academic). Matlab parallel computing toolbox licence allows up to 12 local workers so we are aiming at a 12 core server with 4GB memory per core (total of 48gb). The system will have an SSD for the OS and a raid-5 (4x2tb) for data. I looked around and found a (relatively) cheap vendor, Silicon Mechanics, that offers a system to our liking (specs below) for $6732. However, buying the components from newegg cost only $4464! The difference is $2268 which is 50% of the base cost. If buying from a company can be thought of as a sort of insurance, basically my premiums are of 50% of the base cost which to me sounds like a lot. Of course any downtime is bad, but the work is not "mission critical", i.e. if it takes a few days to fix it when it breaks its no the end of the world. If it takes weeks to months then its a problem. If it breaks 2-3 times in 3 years, not too bad. If it breaks every month not good. In term of build experience, I set up a linux cluster in grad school (from existing computers) and I build my home pcs but I never built a server before. The server components I'm thinking about: 1 x SUPERMICRO SYS-7046T-6F 4U Tower Server Barebone Dual LGA 1366 Intel 5520 DDR3 1333/1066/800 ($1,050) 12 x Kingston 4GB 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10600) ECC Unbuffered Server Memory ($420) 2 x Intel Xeon E5645 Westmere-EP 2.4GHz LGA 1366 80W Six-Core ($1,116) 4 x Seagate Constellation ES 2TB 7200 RPM SATA 6.0Gb/s 3.5" ($1,040) 1 x SAMSUNG Internal DVD Writer Black SATA ($20) 1 x Intel 520 Series 2.5" 180GB SATA III MLC SSD $300 1 x LSI LSI00281 PCI-Express 2.0 x8 MD2 Low profile SATA / SAS MegaRAID SAS 9260CV-4i Controller Card, $695

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• BizTalk 2009 - How do I do t"HAT"?

  - by StuartBrierley

  In my previous life working with BizTalk Server 2004, I came to view HAT (the Health and Activity Tracking tool) as one of my first ports of call in the case of problems with any of our BizTalk solutions.  When you move to BizTalk Server 2009 it is quickly apparent that HAT is no longer with us. HAT was useful in BizTalk 2004 mainly as it provided developers and administrators with a number of useful queries and views of what was going on inside BizTalk at runtime; when and what type of messages were received and sent, what messages had been suspended, what orchestration were running or suspended, you could even follow the process flow of a message or orchestration to see what was going on. With BizTalk Server 2009 much of the functionality of HAT can now be found in the BizTalk Administration console.  Select a BizTalk Group and you will be shown the Group Hub Overview page.  This provides a number of default queries that replicate some of those found in the old HAT. You can also use the Group Hub page to create new queries.  These can then be saved and loaded in other Group Hub instances - useful for creating queries in development for later use in Test, Psuedo-Live and Live environments. In the next few posts I am going to look at some of the common queries that we might miss from HAT and recreate them (or something close) using the new query option. Messages - last 100 received Messages - last 100 sent Messages - last 50 suspended Service instances - last 100 I have yet to try the updated Admin-HAT-Console in anger, and after using old-HAT for so long it may take some getting uesd to, but so far I would say that moving the HAT functionality into the BizTalk Administration console was probably the correct way to go.  Having one tool as the place to look for the combined functionality on offer certainly seems to be the sensible option.

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• An experiment: unlimited free trial

  - by Alex.Davies

  The .NET Demon team have just implemented an experiment that is quite a break from Red Gate's normal business model. Instead of the tool expiring after the trial period, it now continues to work, but with a new message that appears after the tool has saved you a certain amount of time. The rationale is that a user that stops using .NET Demon because the trial expired isn't doing anyone any good. We'd much rather people continue using it forever, as long as everyone that finds it useful and can afford it still pays for it. Hopefully the message appearing is annoying enough to achieve that, but not for people to uninstall it. It's true that many companies have tried it before with mixed results, but we have a secret weapon. The perfect nag message? The neat thing for .NET Demon is that we can easily measure exactly how much time .NET Demon has saved you, in terms of unnecessary project builds that Visual Studio would have done. When you press F5, the message shows you the time saved, and then makes you wait a shorter time before starting your application. Confronted with the truth about how amazing .NET Demon is, who can do anything but buy it? The real secret though, is that while you wait, .NET Demon gives you entertainment, in the form of a picture of a cute kitten. I've only had time to embed one kitten so far, but the eventual aim is for a random different kitten to appear each time. The psychological health benefits of a dose of kittens in the daily life of the developer are obvious. My only concern is that people will complain after paying for .NET Demon that the kittens are gone.

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• Problem with a* implementation in pygame

  - by piyush3dxyz

  Yesterday i decide to make RTS game in pygame(pygame is best).I figured out many components of RTS game like unit selecting,health,resources but only 1 thing i still not understand.. which is a* pathfinding in pygame... I also done little bit of research on wiki,articles and papers...but still cant figure out problem.... function A*(start,goal) closedset := the empty set // The set of nodes already evaluated. openset := {start} // The set of tentative nodes to be evaluated, initially containing the start node came_from := the empty map // The map of navigated nodes. g_score[start] := 0 // Cost from start along best known path. // Estimated total cost from start to goal through y. f_score[start] := g_score[start] + heuristic_cost_estimate(start, goal) while openset is not empty current := the node in openset having the lowest f_score[] value if current = goal return reconstruct_path(came_from, goal) remove current from openset add current to closedset for each neighbor in neighbor_nodes(current) if neighbor in closedset continue tentative_g_score := g_score[current] + dist_between(current,neighbor) if neighbor not in openset or tentative_g_score <= g_score[neighbor] came_from[neighbor] := current g_score[neighbor] := tentative_g_score f_score[neighbor] := g_score[neighbor] + heuristic_cost_estimate(neighbor, goal) if neighbor not in openset add neighbor to openset return failure here is the pseudocode for wiki a* implementation......

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• Neural network input preprocessing

  - by TND

  It's clear that the effectiveness of a neural network depends strongly on the format you give it to work with. You want to preprocess it into the most convenient form you can algorithmically get to, so that the neural network doesn't have to account for that itself. I'm working on a little project that (surprise!) is going to be using neural networks. My future goal is to eventually use NEAT, which I'm really excited about. Anyway, one of my ideas involves moving entities in continuous 2D space, from a top-down perspective (this would be a really cool game AI). Of course, unless these guys are blind, they're going to be able to see the world around them. There's a lot of different ways this information could be fed into the network. One interesting but expensive way is to simply render a top-down "view" of things, with the entities as dots on the picture, and feed that in. I was hoping for something much simpler to use (at least at first), such as a list of the x (maybe 7 or so) nearest entities and their position in relative polar coordinates, orientation, health, etc., but I'm trying to think of the best way to do it. My first instinct was to order them by distance, which would inherently also train the neural network to consider those more "important". However, I was thinking- what if there's two entities that are nearly the same distance away? They could easily alternate indexes in that list, confusing the network. My question is, is there a better way of representing this? Essentially, the issue is the network needs a good way of keeping track of who's who, while knowing (by being inputted) relevant information about the list of entities it can see. Thanks!

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• Should business services cross bounded contexts?

  - by Paul T Davies

  Firstly, I am following the convention that a bounded context is synonymous to a department, or possibly one department has 1 to many bounded contexts. We have a client consultancy department that has a Documentation Service. Documents are stored in the Document Store Service (which is where all documents in the company are stored - it is a utility service), and the Documentation Service stores information about that document (a business service). As it was designed for the client consultancy, it is information relevant to them. Now health and safety need somewhere to store information about a document. This is different information to client consultancy, but I have been instructed to extend the existing service to account for this extra information. I feel this service is now crossing a bounded context. My worry is that all departments will eventually store there information in here and the service will become bloated, trying to be all things to all departments. Each document record will only store a subset of the information because it will only belong to one department. It will get worse when different departments want to store the same information but refer to it in a diferent ways, or when two departments want to store different information that they refer to in the same way. In my understanding, this is exactly the reason for bounded contexts. I feel each department should have it's own business service for information about a document, but use the same utility service to actually store the document. What would be the correct approach?

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• Pure functional programming and game state

  - by Fu86

  Is there a common technique to handle state (in general) in a functional programming language? There are solutions in every (functional) programming language to handle global state, but I want to avoid this as far as I could. All state in a pure functional manner are function parameters. So I need to put the whole game state (a gigantic hashmap with the world, players, positions, score, assets, enemies, ...)) as a parameter to all functions which wants to manipulate the world on a given input or trigger. The function itself picks the relevant information from the gamestate blob, do something with it, manipulate the gamestate and return the gamestate. But this looks like a poor mans solution for the problem. If I put the whole gamestate into all functions, there is no benefit for me in contrast to global variables or the imperative approach. I could put just the relevant information into the functions and return the actions which will be taken for the given input. And one single function apply all the actions to the gamestate. But most functions need a lot of "relevant" information. move() need the object position, the velocity, the map for collision, position of all enemys, current health, ... So this approach does not seem to work either. So my question is how do I handle the massive amount of state in a functional programming language -- especially for game development?

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• An experiment: unlimited free trial

  - by Alex Davies

  The .NET Demon team have just implemented an experiment that is quite a break from Red Gate’s normal business model. Instead of the tool expiring after the trial period, it now continues to work, but with a new message that appears after the tool has saved you a certain amount of time. The rationale is that a user that stops using .NET Demon because the trial expired isn’t doing anyone any good. We’d much rather people continue using it forever, as long as everyone that finds it useful and can afford it still pays for it. Hopefully the message appearing is annoying enough to achieve that, but not for people to uninstall it. It’s true that many companies have tried it before with mixed results, but we have a secret weapon. The perfect nag message? The neat thing for .NET Demon is that we can easily measure exactly how much time .NET Demon has saved you, in terms of unnecessary project builds that Visual Studio would have done. When you press F5, the message shows you the time saved, and then makes you wait a shorter time before starting your application. Confronted with the truth about how amazing .NET Demon is, who can do anything but buy it? The real secret though, is that while you wait, .NET Demon gives you entertainment, in the form of a picture of a cute kitten. I’ve only had time to embed one kitten so far, but the eventual aim is for a random different kitten to appear each time. The psychological health benefits of a dose of kittens in the daily life of the developer are obvious. My only concern is that people will complain after paying for .NET Demon that the kittens are gone.

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• Should I encrypt data in database?

  - by Tio

  I have a client, for which I'm going to do an Web application about patient care, managing patients, consults, history, calendars, everything about that basically. The problem is that this is sensitive data, patient history and such. The client insists on encrypting the data at the database level, but I think this is going to deteriorate the performance of the web app. ( But maybe I shouldn't be worried about this ) I've read the laws about data protection on health issues ( Portugal ), but isn't very specific about this ( I just questioned them about this, I'm waiting for their response ). I've read the following link, but my question is different, should I encrypt the data in the database, or not. One problem that I foresee in encrypting data, is that I'm going to need a key, this could be the user password, but we all know how user passwords are ( 12345 etc etc ), and generating a key I would have to store it somewhere, this means that the programmer, dba, whatever could have access to it, any thoughts on this? Even adding an random salt to the user password isn't going to solve the problem since I can always access it, and therefore decrypt the data.

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• Help with collision detection method [on hold]

  - by derek jones

  I was wondering if any of you could spare me some time to go over some collision detection on my platform engine. i tried XNA a few years back but for reasons i wont go into online could not continue, my health is now at a state where i am ready to try again but due to my current circumstances (and age) schooling is out of the question so i turn to you guys for help. Whilst i can adapt the MS sample ok and have some great features, you will agree modifying code is not really learning. So i have spent the last couple of week going over my old MS code and lots of stuff online and decided on what i want and have ported most of it over to code that i understand 90% of. I have my player class that moves about, jumps with gravity, has animations and a bounding box that follows it around. I have my map & basic level class to load levels from text files. Its just how i handle the collisions that i am struggling with as i will want per pixel collision on some tiles(i have code for this in a pong game i made so that should be ok). I'm pretty clear in my mind on what i need to do its just putting it in code and in the right place, here's what i was thinking. I was going to do it all in layers, have a tile layer, a collision layer & an item layer this way i could make a nice map editor in Win Forms at some point. Anyway i need to read in the collision layer the assign each tile a rectangle and collision property, and this is where i get me. Would any of you be able to spare some time and go over this with me ? I will post some code later Regards Del

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