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• New college grad, psychology major, wants to code professionally. Should I get Sun Java-certified?

  - by Anita

  I just graduated from a fairly well-known liberal arts college in May. Interestingly, I majored in psychology, with a concentration in social psychology. In college I took Intro to Computer Science and hated it (used to blame it on myself; now I blame it on the professor :) However, I've always wanted to be a programmer, and finally got my wish by getting hired by a company that was willing to let me learn coding from scratch in exchange for low pay. Well, what do you know, I just got laid off this morning, and need a new job by November to pay the bills. I loved the coding part of my job at the company, and managed to learn enough Java to feel competent in the job and curious to learn more. I think my goal now is to become a professional programmer. I still know very little (never used Swing, for example) but nothing that a good book can't fix. That's the background anyway; sorry for the rambling - I'm still in shock from the layoff :( It seems to me the quickest way to get noticed by companies, without a CS degree, is by getting certification. I'm halfway through studying for the SCJP and can probably sit for an exam in a week or two. Am I right in my assumption that certs will help in my case? And in general, do I have a bat's chance in hell of making it against formally trained programmers? My assets are really just raw intelligence and intense curiosity; well, maybe a love for problem-solving too. Thanks all - feel free to edit/tag the post!

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• Media Information for Constant and Variable bit rate of Video files

  - by cpx

  What is this Maximum bit rate for a .mp4 format file whose bit rate mode is Constant? Media information displayed for MP4 (Using MediaInfo Tool) ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : [email protected] Format settings, CABAC : No Format settings, ReFrames : 1 frame Codec ID : avc1 Codec ID/Info : Advanced Video Coding Bit rate mode : Constant Bit rate : 1 500 Kbps Maximum bit rate : 3 961 Kbps Display aspect ratio : 4:3 Frame rate mode : Constant Frame rate : 29.970 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.163 In this case where the bit rate mode is set to Variable, is the Bit rate field where the value is displayed as 309 is its average bit rate? Media information displayed for M4V (Using MediaInfo Tool) ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : [email protected] Format settings, CABAC : No Format settings, ReFrames : 1 frame Codec ID : avc1 Codec ID/Info : Advanced Video Coding Bit rate mode : Variable Bit rate : 309 Kbps Display aspect ratio : 16:9 Frame rate mode : Variable Frame rate : 23.976 fps Minimum frame rate : 23.810 fps Maximum frame rate : 24.390 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.229 Writing library : x264 core 120

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• SMB super slow within LAN between MAC and PC

  - by asdcasdc

  I have a windows desktop which stores all my movies, songs and pictures. I have a mac laptop which I would like to access these files. I don't want to utilize the FTP or SCP protocol because I don't want them to be downloaded to my mac. I want to access them as if they are a network mounted disk. So I tried using the native SMB protocol (available in Finder - Go - Connect to server). I tried dragging a file and dropping it onto my MAC's desktop. Surprisingly, I am only able to transfer at a very slow rate of about 1mb/s. Assuming network connectivity is not a problem, has anyone experienced incredible slowness with SMB? Are there alternative protocols for me to use in this case between PC and MAC?

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• ArchBeat Link-o-Rama Top 20 for April 1-9, 2012

  - by Bob Rhubart

  The top 20 most popular items shared via my social networks for the week of April 1 - 8, 2012. Webcast: Oracle Maximum Availability Architecture Best Practices w/Tom Kyte - April 12 Oracle Cloud Conference: dates and locations worldwide Bad Practice Use Case for LOV Performance Implementation in ADF BC | Oracle ACE Director Andresjus Baranovskis How to create a Global Rule that stores a document’s folder path in a custom metadata field | Nicolas Montoya MySQL Cluster 7.2 GA Released How to deal with transport level security policy with OSB | Jian Liang Webcast Series: Data Warehousing Best Practices http://bit.ly/I0yUx1 Interactive Webcast and Live Chat: Oracle Enterprise Manager Ops Center 12c Launch - April 12 Is This How the Execs React to Your Recommendations? | Rick Ramsey Unsolicited login with OAM 11g | Chris Johnson Event: OTN Developer Day: MySQL - New York - May 2 OTN Member discounts for April: Save up to 40% on titles from Oracle Press, Pearson, O'Reilly, Apress, and more Get Proactive with Fusion Middleware | Daniel Mortimer How to use the Human WorkFlow Web Services | Oracle ACE Edwin Biemond Northeast Ohio Oracle Users Group 2 Day Seminar - May 14-15 - Cleveland, OH IOUG Real World Performance Tour, w/Tom Kyte, Andrew Holdsworth, Graham Wood WebLogic Server Performance and Tuning: Part I - Tuning JVM | Gokhan Gungor Crawling a Content Folio | Kyle Hatlestad The Java EE 6 Example - Galleria - Part 1 | Oracle ACE Director Markus Eisele Reminder: JavaOne Call For Papers Closing April 9th, 11:59pm | Arun Gupta Thought for the Day "A distributed system is one in which the failure of a computer you didn't even know existed can render your own computer unusable." — Leslie Lamport

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• Are these components compatible and are there any significant bottlenecks?

  - by Tom Gullen

  I'm trying to buy a new pc, for software dev and a bit of gaming. I already have a 500gb HDD , and a PCI sound card I want to use as well. Is all this stuff compatible, and will it all work together and are there any significant bottlenecks? Case, Mobo and PSU "Primo Motion" AMD 880G DDR3 Ready Barebones (Socket AM3) http://www.overclockers.co.uk/showproduct.php?prodid=FS-268-OK&groupid=43&catid=1817&subcat= SSD 64GB Crucial RealSSD C300 64GB 2.5" SATA 6Gb/s Solid State Hard Drive http://www.overclockers.co.uk/showproduct.php?prodid=HD-007-CR&groupid=1657&catid=1660&subcat=1668 CPU AMD Phenom II X6 Six Core 1090T Black Edition 3.20GHz (Socket AM3) http://www.overclockers.co.uk/showproduct.php?prodid=CP-266-AM&groupid=701&catid=6&subcat=1944 RAM 8GB Corsair Vengeance 8GB (2x4GB) DDR3 PC3-15000C9 1866MHz Dual Channel Kit http://www.overclockers.co.uk/showproduct.php?prodid=MY-292-CS&groupid=701&catid=8&subcat=1387 Graphics XFX ATI Radeon HD 5770 1024MB GDDR5 PCI-Express Graphics Card http://www.overclockers.co.uk/showproduct.php?prodid=GX-149-XF

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• Executing Components in an Entity Component System

  - by John

  Ok so I am just starting to grasp the whole ECS paradigm right now and I need clarification on a few things. For the record, I am trying to develop a game using C++ and OpenGL and I'm relatively new to game programming. First of all, lets say I have an Entity class which may have several components such as a MeshRenderer,Collider etc. From what I have read, I understand that each "system" carries out a specific task such as calculating physics and rendering and may use more that one component if needed. So for example, I would have a MeshRendererSystem act on all entities with a MeshRenderer component. Looking at Unity, I see that each Gameobject has, by default, got components such as a renderer, camera, collider and rigidbody etc. From what I understand, an entity should start out as an empty "container" and should be filled with components to create a certain type of game object. So what I dont understand is how the "system" works in an entity component system. http://docs.unity3d.com/ScriptReference/GameObject.html So I have a GameObject(The Entity) class like class GameObject { public: GameObject(std::string objectName); ~GameObject(void); Component AddComponent(std::string name); Component AddComponent(Component componentType); }; So if I had a GameObject to model a warship and I wanted to add a MeshRenderer component, I would do the following: warship->AddComponent(new MeshRenderer()); In the MeshRenderers constructor, should I call on the MeshRendererSystem and "subscribe" the warship object to this system? In that case, the MeshRendererSystem should probably be a Singleton("shudder"). From looking at unity's GameObject, if each object potentially has a renderer or any of the components in the default GameObject class, then Unity would iterate over all objects available. To me, this seems kind of unnecessary since some objects might not need to be rendered for example. How, in practice, should these systems be implemented?

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• I have a ESXi 5.0 installed and when I am Installing Ubuntu Server 12.04 LTS it is giving an error saying grub installation failed?

  - by Rishee

  I have a ESXi 5.0 installed and when I am Installing Ubuntu Server 12.04 LTS (32 bit) it is giving an error saying grub installation failed? Please check the below screenshot of the error. I have other Ubuntu servers running fine on this esxi server, so I don't think problem is with ESXi. I have 32 GB of ram spare on this ESXi and have given 2 GB of RAM to this 12.0 LTS VM. I have given 2 cores of processor. I have tried supplying different ISO Image to this VM as I thought the 1st image that I downloaded has errors.. But defiantly that's not the case as all 3 different ISO images that I downloaded of Ubuntu server 12.04 LTS (32-bit) can't be corrupt!! Just to make sure that the Image does not have problem I used that Image to install it for testing on stand alone system. it works fine there!! This is a production ESXi server with which I can't play with, how ever I can play whith the Ubuntu Server 12.04 LTS (32-Bit) VM that we have created on that ESXi. I need help on this as soon as possible. go live date of this server is really close. (This Question is already there on Super user and Server Fault.)

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• What are the advantages and disadvantages of having a hosted firewall?

  - by Roy

  Would you rather have your firewall hosted or in house if you've got the skills to manage it? We currently have 6 remote offices and 2 different ISP's, one private network and our firewall (Watchguard, licenses are due to expire) is also our main gateway. I don't see how a hosted firewall (in this case Fortinet) is going to work for us especially when it's cheaper to buy our own firewall and the transition from one ISP to a new provider will take some time because our current contracts aren't due to expire soon. What are to pros and cons of having a firewall hosted by your ISP in general?

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• Inheriting projects - General Rules? [closed]

  - by pspahn

  Possible Duplicate: When is a BIG Rewrite the answer? Software rewriting alternatives Are there any actual case studies on rewrites of software success/failure rates? When should you rewrite? We're not a software company. Is a complete re-write still a bad idea? Have you ever been involved in a BIG Rewrite? This is an area of discussion I have long been curious about, but overall, I generally lack the experience to give myself an answer that I would fully trust. We've all been there, a new client shows up with a half-complete project they are looking to finish and launch. For whatever reason, they fired their previous developer, and it's now up to you to save the day. I am just finishing up a code review for a new client, and in my estimation is would be better to scrap what the previous developers built since and start from scratch. There's a ton of reasons why I am leaning toward this way, but it still makes me nervous since the client isn't going to want to hear "those last guys built you a big turd, and I can either polish it, or throw it in the trash". What are your general rules for accepting these projects? How do you determine whether it will be better to start from scratch or continue with the existing code base? What other extra steps might you take to help control client expectations, since the previous developer may have inflated those expectations beyond a reasonable level? Any other general advice?

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• Windows Azure Virtual Machines - Make Sure You Follow the Documentation

  - by BuckWoody

  To create a Windows Azure Infrastructure-as-a-Service Virtual Machine you have several options. You can simply select an image from a “Gallery” which includes Windows or Linux operating systems, or even a Windows Server with pre-installed software like SQL Server. One of the advantages to Windows Azure Virtual Machines is that it is stored in a standard Hyper-V format – with the base hard-disk as a VHD. That means you can move a Virtual Machine from on-premises to Windows Azure, and then move it back again. You can even use a simple series of PowerShell scripts to do the move, or automate it with other methods. And this then leads to another very interesting option for deploying systems: you can create a server VHD, configure it with the software you want, and then run the “SYSPREP” process on it. SYSPREP is a Windows utility that essentially strips the identity from a system, and when you re-start that system it asks a few details on what you want to call it and so on. By doing this, you can essentially create your own gallery of systems, either for testing, development servers, demo systems and more. You can learn more about how to do that here: http://msdn.microsoft.com/en-us/library/windowsazure/gg465407.aspx   But there is a small issue you can run into that I wanted to make you aware of. Whenever you deploy a system to Windows Azure Virtual Machines, you must meet certain password complexity requirements. However, when you build the machine locally and SYSPREP it, you might not choose a strong password for the account you use to Remote Desktop to the machine. In that case, you might not be able to reach the system after you deploy it. Once again, the key here is reading through the instructions before you start. Check out the link I showed above, and this link: http://technet.microsoft.com/en-us/library/cc264456.aspx to make sure you understand what you want to deploy.  

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• Drive project success & financial performance with business critical Enterprise Project Portfolio Management

  - by Sylvie MacKenzie, PMP

  Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";} Oracle Primavera invites you to the first in a series of three webcasts linking Enterprise Project Portfolio Management with enhanced operational performance and better financial results. Few organizations fully understand the impact projects have on their business. Consistently delivering successful projects is vital to the financial success of an asset intensive organization. Enterprise Project Portfolio Management (EPPM) is not a new concept yet for many organizations it is not considered "business critical". Webcast 1: Plan – Aligning project selection and prioritization with corporate objectives This webcast will look at 2 key questions: Are you aligning portfolio decisions with strategic objectives? How do you effectively measure the success of your portfolio decisions? Hear from Accenture who'll present a compelling case for why asset intensive organizations should consider EPPM as business critical. They'll explore: How technology is being used to enhance project delivery How collaboration enhances delivery performance The major challenges associated with the planning phase of a project Next hear from Geoff Roberts, Industry Strategist from Oracle Primavera. With over 30 years experience in project management/project controls in the construction, utilities and oil & gas sectors, Geoff will investigate how EPPM is a best practice and can support an organization through project selection and prioritization ensuring that decisions are aligned with corporate objectives. Don’t miss out, register today!

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• How to check for duplicate files?

  - by miorel

  I have an external hard drive on which I have backed up files several times. Some files were modified between backups, others were not. Some may have been renamed. Now I'm running out of space, and I'd like to clean up duplicate files. My idea was to md5sum every file on the drive, then look for duplicates, and diff the relevant files (just in case, haha). Is this the best way to do this? What are some other methods of checking for duplicate files?

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• Programming and Ubiquitous Language (DDD) in a non-English domain

  - by Sandor Drieënhuizen

  I know there are some questions already here that are closely related to this subject but none of them take Ubquitous Language as the starting point so I think that justifies this question. For those who don't know: Ubiquitous Language is the concept of defining a (both spoken and written) language that is equally used across developers and domain experts to avoid inconsistencies and miscommunication due to translation problems and misunderstanding. You will see the same terminology show up in code, conversations between any team member, functional specs and whatnot. So, what I was wondering about is how to deal with Ubiquitous Language in non-English domains. Personally, I strongly favor writing programming code in English completely, including comments but ofcourse excluding constants and resources. However, in a non-English domain, I'm forced to make a decision either to: Write code reflecting the Ubiquitous Language in the natural language of the domain. Translate the Ubiquitous Language to English and stop communicating in the natural language of the domain. Define a table that defines how the Ubiquitous Language translates to English. Here are some of my thoughts based on these options: 1) I have a strong aversion against mixed-language code, that is coding using type/member/variable names etc. that are non-English. Most programming languages 'breathe' English to a large extent and most of the technical literature, design pattern names etc. are in English as well. Therefore, in most cases there's just no way of writing code entirely in a non-English language so you end up with a mixed languages. 2) This will force the domain experts to start thinking and talking in the English equivalent of the UL, something that will probably not come naturally to them and therefore hinders communication significantly. 3) In this case, the developers communicate with the domain experts in their native language while the developers communicate with each other in English and most importantly, they write code using the English translation of the UL. I'm sure I don't want to go for the first option and I think option 3 is much better than option 2. What do you think? Am I missing other options?

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• Keyboard freezes / stuck if a key pressed repeatedly

  - by Aziz Rahmad

  I use Acer 4530. This problem has happened long since Ubuntu 10.10 and now that I use 11.04 dual booted with Linux Mint 10. Everytime I press one key repeatedly, like when I read a long article in a website/ebook or when I play games which required me to press arrow keys repeatedly, it would randomly freeze. That is, whatever I press on keyboard has no effect, and that also happens with touchpad. However, the USB mouse works just fine. I later found out that it's not actually freeze but more like it's like the key stuck. For example when I play tetris which I usually press w (down) button repeatedly, after some times it would freeze. And if I put the cursor in, say, browser's address bar, it would type "wwww....." infinitely. The only way I could fix it is by suspend the laptop, either by using mouse or by closing the lid. And instead of suspended, in that case the laptop would automatically wake up and everything will be fine. (Usually my laptop would wake up after suspended by pressing any key) It has happened since the first time I use Ubuntu, 10.10, and it also happens in Linux Mint 10, and until now in Ubuntu 11.04. It never happened when I use Windows, though. Anyone has ever encounter similar problem? Anyone know how to fix it permanently?

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• Won't boot after installing Ubuntu 12.04 sucessfully

  - by Matt

  I installed 12.04 successfully and rebooted (I took out my installation CD), and selected the newly installed Linux partition to boot from rEFIt. Then it just comes up with this error message: Error loading operating system which could not be more vague. Take that back. I guess it could say just "error." I don't even get to the boot prompt which limits what I can do. I cannot boot into rescue mode. I tried boot-repair, but it took more than 24 hours to check the system configuration, so I gave up on that. I'm running a Mac Mini with its main OS being Mac OS X 10.5.8. I have an alternate OS Windows XP installed, which was virtually destroyed by this Linux installation. I sacrificed my working, speedy Windows partition for something that won't even boot up. What was I thinking. My Mac partition is slow as crap. I've tried installing 12.04 many times with two different disks. The first time, I had one partition for Linux, then I had 2 (swap+main), then 3 (swap, main and BIOS), then 4 which is what I have now (swap, main, BIOS, and boot/grub). The only way I could get through the install without GRUB giving up was if I created a separate partition for it. Which was pointless, because it did install successfully, but it still doesn't boot up at all. Could rEFIt be booting off of the BIOS or one of the other partitions? Because if that's the case, there is no alternative, because Mac itself without rEFIt refuses to recognize a Linux ext4 (or 2 or 3) format partition. Apple always has to make everything so difficult. If I'm not mistaken, rEFIt is the only application of its kind for Mac. I can boot off of the CD back to the install/try screen. This is extremely upsetting, can you guys help? Please?

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• Oracle Database 12c By Example – SQL Developer and Multitenant

  - by thatjeffsmith

  As you may have heard, Oracle Database 12c is now available. In addition to the binaries and docs going out, we also published a few new Oracle By Example (OBE) chapters. You can find those links here on our product page. Do you know who found these, practically the minute they were published? An enterprising DBA-extraordinaire who was just happening to be presenting at the ODTUG KScope13 conference in New Orleans. He thought it would be a good idea to download the new software over a hotel WIFI, install and create a new multitenant database, watch a few OBEs, and then demo that live for his ‘SQL Developer for DBAs‘ session. Pretty crazy, right? Well, he did it, and I was there to watch. Way cool. You can listen to @leight0nn tell his story in his own words via this ODTUG interview with @oraclenered. In case you’re too giddy to sit through the video, I’ll give you a preview – he succesfully cloned a pluggable database in about a minute with only a couple of clicks using Oracle SQL Developer 3.2.20.09 while connected to a 12c database.

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• from Java to SAS

  - by Giovanni Rossi

  I am a seasoned python,java,...other programmer having a (fairly advanced) mathematical education (so I do understand statistics and data mining, for example) . For various reasons I am thinking to switch to SAS/BI area (I am naming SAS because it might be, for me, a possible way to enter in BI). My question, for whoever might have an experience of both: is it, in BI current state, worth it? I mean, the days of big ideas in BI for business seem to be over (there are the APIs, managers think that they know what you can do with them), and my mathematical background might turn out to be superflous. Also, the big companies now have their data organized, have their BI procedures well established, and trying to analyze it from a different standpoint might not be what they want. Another difference is: while in Java etc. development one codes and codes and codes, I don't know if this is the case for BI; in fact, from what I read on the net, a BI (or OLAP, ...etc) developer, in a big organization, is usually in a state of standby, and does in fact little coding. Any opinions, and in particular strong opinions, will be appreciated.

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• Startup/Shutdown time in Xubuntu is increasing!

  - by Ankit

  I am a novice Xubuntu user on a dual-boot machine. The other OS I have is Windows 7. When I first began using Xubuntu, I had really fast startup and shutdown (much much faster than Windows 7 :) ). However, as I started using it more and more for my work, these times started rising. I do not have any problems with execution speed of running applications. My main concern is the shutdown time. Now it has gone above Windows shutdown time [startup time has only partially increase compared to shutdown]. I checked some similar questions like this. However, they seem to not answer my concern as I feel that the concerned users there experience a long wait before the screen goes blue. In my case, the screen goes blue (desktop session ends a blue screen with a moving slider appears) pretty fast. However, it remains blue for a long time. Another answer that I saw on google was to use dmesg and then stopping some services that I do not want. However, me being a novice could not completely understand what it meant

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• Unable to boot to Ubuntu. Inconsistency in disk, X server didn't start. Illegal blocks in Inode

  - by becomingGuru

  I am unable to boot into my Ubuntu system. First I get that fsck died with exit status 4 Then I try to do it manually as prompted and I get that an Inode has illegal blocks and asked to clear it. Upon googling, I found that is because my HD has some problems I booted via Live cd and took a dd of the entire Ubuntu on an external HDD just in case. Is it safe to clear all the illegal blocks. How do I safely restore my environment if I replace my HD. Is there any thing i can do in the meanwhile to continue to use my laptop without significant loss of data. Perhaps a related error, the x server fails to start

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• Time Machine for Windows

  - by Kevin L.

  A simple Google search for "Time Machine for Windows" results in a flurry of different little apps. But instead of relying on forum anecdotes and advertisements, I call on the much wiser Super User beta community for some depth on this one. Having Time Machine running on Leopard is like a warm, fuzzy blanket of comfort that I never got with RAID, rsync, or SyncToy on Windows. I'm not asking the community what the "best" backup software for Windows is, but instead: Is there any true Time Machine clone for Windows, one that includes as many of the following as possible: Completely transparent, "set-it-and-forget-it" backup Incremental backups (changes only) for every hour for a day, every day for a month, and every week until the backup disk is full Ability to rebuild from this backup disk in case of main drive meltdown (the backup doesn't have to be bootable; neither are Time Machine disks) Extremely easy to use UI (target user == wife). Bonus points for a beautiful UI

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• tcp flags in iptables: What's the difference between RST SYN and RST and SYN RST ? When to use ALL?

  - by Kris

  I'm working on a firewall for a virtual dedicated server and one of the things I'm looking into is port scanners. TCP flags are used for protection. I have 2 questions. The rule: -p tcp --tcp-flags SYN,ACK,FIN,RST SYN -j DROP First argument says check packets with flag SYN Second argument says make sure the flags ACK,FIN,RST SYN are set And when that's the case (there's a match), drop the tcp packet First question: I understand the meaning of RST and RST/ACK but in the second argument RST SYN is being used. What's the difference between RST SYN and RST and SYN RST ? Is there a "SYN RST" flag in a 3 way handshake ? Second question is about the difference between -p tcp --tcp-flags SYN,ACK,FIN,RST SYN -j DROP and -p tcp --tcp-flags ALL SYN,ACK,FIN,RST SYN -j DROP When should ALL be used ? When I use ALL, does that mean if the tcp packet with the syn flag doesn't have the ACK "and" the FIN "and" the RST SYN flags set, there will be no match ?

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• BizTalk: Dynamic SMTP Port: Unknown Error Description

  - by Leonid Ganeline

  Today I investigated one strange error working with Dynamic SMTP Port.   Event Type: Error Event Source: BizTalk Server 2006 Event Category: BizTalk Server 2006 Event ID: 5754 Date: ******** Time: ********AM User: N/A Computer: ******** Description: A message sent to adapter "SMTP" on send port "*********" with URI "mailto:********.com" is suspended. Error details: Unknown Error Description  MessageId:  {********} InstanceID: {********}   My code was pretty simple and the source of the error was hidden somewhere inside it.   msg_MyMessage(SMTP.CC) = var_CC; msg_MyMessage(SMTP.From) = var_From; msg_MyMessage(SMTP.Subject) = var_Subject; msg_MyMessage(SMTP.EmailBodyText) = var_Message;    // #1    msg_MyMessage(SMTP.SMTPHost) = " localhost "; msg_MyMessage(SMTP.SMTPAuthenticate) = 0; When I added line #2, this frustrating error disappeared.    msg_MyMessage(SMTP.EmailBodyTextCharset) = "UTF-8"; // #2 Conclusion: If we use the SMTP.EmailBodyText property, we must set up the SMTP.EmailBodyTextCharset property. To me it looks like a bug in BizTalk. [Maybe it is "by design", but in this case give us a useful error text!!!] And don't ask me how much time I've spent with this investigation.

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• Enigmail - how to encrypt only part of the message?

  - by Lukasz Zaroda

  When I confirmed my OpenPGP key on launchpad I got a mail from them, that was only partially encrypted with my key (only few paragraphs inside the message). Is it possible to encrypt only chosen part of the message with Enigmail? Or what would be the easiest way to accomplish it? Added #1: I found a pretty convenient way for producing ASCII armoured encrypted messages by using Nautilus interface (useful for ones that for some reason doesn't like to work with terminal). You need to install Nautilus-Actions Configuration Tool, and add there a script with a name eg. "Encrypt in ASCII" and parameters: path: gpg parameters: --batch -sear %x %f The trick is that now you can create file, with extension that would be name of your recipient, you can then fill it with your message, right click it in Nautilus, choose "Encrypt in ASCII", and you will have encrypted ascii file which content you can (probably) just copy to your message. But if anybody knows more convenient solution please share it. Added #1B: In the above case if you care more about security of your messages, It's worth to turning off invisible backup files that gedit creates every time, you create new document, or just remember to delete them.

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• Using an Apt Repository for Paid Software Updates

  - by Scott Warren

  I'm trying to determine a way to distribute software updates for a hosted/on-site web application that may have weekly and/or monthly updates. I don't want the customers who use the on-site product to have to worry about updating it manually I just want it to download and install automatically ala Google Chrome. I'm planning on providing an OVF file with Ubuntu and the software installed and configured. My first thought on how to distributed software is to create six Apt repositories/channels (not sure which would be better at this point) that will be accessed through SSH using keys so if a customer doesn't renew their subscription we can disable their account: Beta - Used internally on test data to check the package for major defects. Internal - Used internally on live data to check the package for defects (dog fooding stage). External 1 - Deployed to 1% of our user base (randomly selected) to check for defects. External 9 - Deployed to 9% of our user base (randomly selected) to check for defects. External 90 - Deployed to the remaining 90% of users. Hosted - Deployed to the hosted environment. It will take a sign off at each stage to move into the next repository in case problems are reported. My questions to the community are: Has anyone tried something like this before? Can anyone see a downside to this type of a procedure? Is there a better way?

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• Simultaneous AI in turn based games

  - by Eduard Strehlau

  I want to hack together a roguelike. Now I thought about entity and world representation and got to a quite big problem. If you want all the AI to act simultaneously you would normally(in cellular automa for examble) just copy the cell buffer and let all action of indiviual cells depend on the copy. Actions which are not valid anymore after some cell before the cell you are currently operating on changed the original enviourment(blocking the path) are just ignored or reapplied with the "current"(between turns) environment. After all cells have acted you copy the current map to the buffer again. Now for an environment with complex AI and big(datawise) entities the copying would take too long. So I thought you could put every action and entity makes into a que(make no changes to the environment) and execute the whole que after everyone took their move. Every interaction on this que are realy interacting entities, so if a entity tries to attack another entity it sends a message to it, the consequences of the attack would be visible next turn, either by just examining the entity or asking the entity for data. This would remove problems like what happens if an entity dies middle in the cue but got actions or is messaged later on(all messages would go to null, and the messages from the entity would either just be sent or deleted(haven't decided yet) But what would happen if a monster spawns a fireball which by itself tracks the player(in the same turn). Should I add the fireball to the enviourment beforehand, so make a change to the environment before executing the action list or just add the ball to the "need updated" list as a special case so it doesn't exist in the environment and still operates on it, spawing after evaluating the action list? Are there any solutions or papers on this subject which I can take a look at? EDIT: I don't need information on writing a roguelike I need information on turn based ai in respective to a complex enviourment.

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