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  • wish missing but tk is installed

    - by kj4ohh
    I was wanting to tinker around with TCL/TK programming. I tried to invoke the wish shell, but got this error: $ wish The program 'wish' is currently not installed. You can install it by typing: sudo apt-get install tk So, I tried to apt-get install tk: $ sudo apt-get install tk Reading package lists... Done Building dependency tree Reading state information... Done tk is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. But it's already installed... Where did wish go?

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  • Optimize strategies for xml parsing?

    - by Future2020
    I am looking for general optimization tips and guidelines for xml parsing. One of the optimization strategies is of course selecting the "right" parser. A detailed comparison between the available parsers for ios can be found here http://www.raywenderlich.com/553/how-to-chose-the-best-xml-parser-for-your-iphone-project. However, I am currently trying to investigate general guidelines and tips on how to optimize by payloads to increase the performance as possible. This question is similar to (a question I have posted in the context of ios) but I have not got a sufficient answer. So this question is not in the context of any particular programming language.

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  • Who determines what is best practice? [closed]

    - by dreza
    I've often searched for answers relating to "best practice" when writing code. And I see many questions regarding what is best practice. However, I was thinking the other day. Who actually determines what this best practice is? Is it the owners or creators of the programming language. Is it the general developer community that is writing in the language and it's just a gut feeling consensus. Is it whoever seems to have the highest prestige in the developer world and shouts the loudest? Is best practice really just another term for personal opinion? I hope this is a constructive question. If I could word it better to ensure it doesn't get closed please feel free to edit, or inform me otherwise.

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  • How is the RIP loaded when an interrupt arrives in an IA-32e 64-bit IDT Gate Descriptor?

    - by Vern
    I need some help with the programming of an IA-32e Interrupt Descriptor as I'm pretty new to it. I don't think I quite understand how the RIP is loaded when an Interrupt arrives. There is a Segment Selector in Intel's 64-bit IDT Gate Descriptor. However, from my understanding across the 5 part Intel manuals, the Linear Address of the Interrupt Handler is loaded into RIP from the 64-bit offset specified in the IDT Gate Descriptor. The only use of the segment selector is to check: if there is a change in privilege levels the Interrupt Handler is truly pointing to a code segment My questions are: Is RIP taken from the 64-bit offset only? Or is RIP = offset(sign extended to 64-bits) + segment selector base? Is the base address pointed to by the segment selector in the IDT Gate Descriptor ignored? Or does it have a use?

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  • Supertuxkart not able to start

    - by subeh.sharma
    Was working fine before i played around with NVIDIA drivers and ended up with this problem. I tried running it through the terminal and i see these messages: subsharm@subsharm-ThinkPad-T61:~$ supertuxkart Irrlicht Engine version 1.7.2 Linux 3.0.0-15-generic #25-Ubuntu SMP Mon Jan 2 17:44:42 UTC 2012 x86_64 [FileManager] Data files will be fetched from: '/usr/share/games/supertuxkart/' [IrrDriver] Creating NULL device Irrlicht Engine version 1.7.2 Linux 3.0.0-15-generic #25-Ubuntu SMP Mon Jan 2 17:44:42 UTC 2012 x86_64 [IrrDriver] Trying OpenGL rendering. [IrrDriver] Tring to create device with 32 bits Xlib: extension "GLX" missing on display ":0.0". [IrrDriver Temp Logger] Level 1: No GLX support available. OpenGL driver will not work. [IrrDriver Temp Logger] Level 2: Fatal error, could not get visual. Segmentation fault subsharm@subsharm-ThinkPad-T61:~$ sudo Xorg -configure [sudo] password for subsharm: Fatal server error: Server is already active for display 0 If this server is no longer running, remove /tmp/.X0-lock and start again.

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  • Charles Barkley syndrome

    - by dacracot
    Charles Barkley was an excellent basketball player, a hall of fame, and a dream team member. He played for the 76ers, Suns, and Rockets. Yet he never won an NBA championship. Some might argue this was because he was never surrounded by other players of his caliber, and in the NBA, you can't win on your own. So what does this have to do with programming? How many of you out there feel like Sir Charles? Leading your team in every category, KLOCs, bugs fixed, systems configured... Always the one pushing for improvements, upgrading systems, negotiating with customers... Feeling like you are carrying the team. Anger just under the surface. Only to retire eventually, without "the ring"1. 1: Keep in mind, Charles never blamed his team. He just performed at his best.

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  • Is there a language between C and C++?

    - by Robert Martin
    I really like the simple and transparent nature of C: when I write C code I feel unencumbered by "leaky abstractions" and can almost always make a shrewd guess as to the assembly I'm producing. I also like the simple, familiar syntax for C. However, C doesn't have these simple, helpful doodads that C++ offers like classes, simplified non-cstring handling, etc. I know that it's all possible to implement in C using jump tables and the like, but that's a bit wordy at times, and not very type-safe for various reasons. I'm not a fan of the over-emphasis on objects in C++, though, and I'm gun shy of the 'new' operator and the like. C++ seems to have just a few too many hiccups to, for instance, be used as a system programming language. Does there exist a language that sits between C and C++ on the scale of widgets and doodads? Disclaimer: I mean this as purely a factual question. I do not intend to anger you because I don't share your view that C{,++} is good enough to do whatever I'm planning.

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  • metro style on windows and android

    - by MRM
    I want to develop a rather simple app using windows 8 metro style for GUI. But i need this app to have the same appearance, GUI, for both platforms, so that end users that uses it both on PC and a mobile device to have the same visual experience and a flawless navigation. So, does anyone have knowledge of a Java framework or library to satisfy these needs? Or maybe a method to create a web-based app using HTML, PHP, JScript etc. (maybe something using a local server, on the same machine, because a web server is out of discussion, at least for the moment)? Any idea, method, technology related to the subject is also helpful. And if what you are thinking at can be used for IOS too, the better.

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  • Are there any resources on how to identify problems that could best be solved with templates?

    - by sap
    I decided to improve my knowledge in template meta-programming. I know the syntax and rules and been playing with counteless examples from online resources. I understand how powerful templates can be and how much compile time optimization they can provide but I still cant "think in templates", I can't seem to know by myself if a certain problem could be best solved with templates and if it can, how to adapt that problem to templates. Is there some kind of online resource or book that teaches how to identify problems that could best be solved with templates and how to adapt that problem?

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  • Algorithms and Programmer's day-to-day job

    - by Lior Kogan
    As of July 10, 2012, Stack Overflow contains 3,345,864 questions, out of which 20,840 questions are tagged as "Algorithm" - this is less than 0.6% ! I find it disturbing. Many programmers have several years of academic education in computer science / software engineering. Most of them are smart... When asked, most would say that they love algorithms. Computer programming is generally about solving problems using algorithms... Yet, only 1 of 160 questions is tagged as algorithm related. What does it say about our profession?

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  • As a young student aspiring to have a career as a programmer, how should I feel about open source software?

    - by Matt
    Every once in a while on some technology websites a headline like this will pop up: http://www.osor.eu/news/nl-moving-to-open-source-would-save-government-one-to-four-billion My initial thought about government and organizations moving to open source software is that tons of programmers would lose their jobs and the industry would shrink. At the same time the proliferation and use of open source software seems to be greatly encouraged in many programming communities. Is my thinking that the full embrace of open source software everywhere will hurt the software industry a misconception? If it is not, then why do so many programmers love open source software?

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  • What is a non commital approach to software analysis

    - by dsjbirch
    When I think about software analysis the first thing which comes to mind is SSADM and the UML. But, what I want is a high level view of the system before I commit to a programming paradigm. Where am I going wrong? How do I approach a problem in a high level and generic way before I commit to a paradigm? What are the diagrams/tools available to support me? Edit: Some examples of tools that appear to be what I'm after are... A block diagram - http://en.wikipedia.org/wiki/Block_diagram A data flow diagram - http://en.wikipedia.org/wiki/Data_flow_diagram

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  • Good resources and tools for modern, heavy JavaScript development?

    - by Matt Greer
    I am interested in doing some projects that involve heavy use of JavaScript. Namely HTML5 based canvas games, potentially using node.js as well. I am interested in learning modern best practices, tools and resources for JavaScript. JavaScript is tough to research because you end up wading through a lot of really outdated material, hailing from the times that "JavaScript" was a four letter word. If you are heavily involved in JavaScript programming... What text editor or IDE do you use? What unit testing framework do you use? Do you use Selenium, or something else? What other tools do you use? What communities exist that discuss recent advents in JavaScript? What books do you read/refer to? What blogs do you read?

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  • Feeling a bit... under-challenged in my university course

    - by Corey
    I'm currently a sophomore at my university, majoring in Computer Science. Obviously, there are some programming courses as part of my curriculum. However, I'm feeling very underwhelmed by its progress. I've self-taught myself a lot and like to code in my spare time as a hobby. I'm currently in Computer Science II. I never took CS 1 because it seemed rather basic -- I asked someone in the department if they would override my CS 1 requirement if I passed their final (which I did with flying colors). Anyway, the class is going by quite slowly. It seems like the rest of the class has a hard time understanding some basic concepts, which the professor needs to keep going over to help them understand. Is this normal? Looking at the class schedule, I seem to know everything except for one or two things near the very end of the semester. Is there a different perspective I can look at this through so it doesn't seem so boring?

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  • Adventures in Lab Management Configuration: Part 2 of 3

    - by Enrique Lima
    The first post was the high level overview. Now it is time for the details on what was done to the existing CMMI Project based on CMMI v 4.2. The first step was to go into Visual Studio, then from the Team Project Collection Settings and then to the Process Template Manager.  Once there, it was a matter of selecting the appropriate template (MSF for CMMI Process Improvement v5.0) and download to a point I could reference later (for example C:\Templates). Then on to using the steps from the guidance post. Since I was using an x64 deployment, I will make reference to the path as <toolpath>, however the actual path to reference in a 64-bit environment is “C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE”. As I mentioned on the previous post, make sure to first perform a backup of the Configuration, Collection and Warehouse DBs.  If you did not apply any changes to the names and such, then you will find those as tfs_Configuration, tfs_DefaultCollection and tfs_Warehouse. Now, the work needed with the witadmin tool: That includes the uploading of the structures that differ from v4.2 to v5.0 There is likely going to be an issue with the naming of some fields. For example, TFS 2010 likes something along the lines of “Area ID”, whereas TFS 2008 would have had it as “AreaID”.  So, this will need to be corrected.  Some posts will have you go through this after the errors pop up.  I would recommend doing this process prior to executing the importwitd process.  witadmin listfields /collection:<path to collection> > c:\ListFields.txt Review the following fields: AreaID, review the Name property and validate if it states “AreaID”, the you will need to rename the Name field to reflect “Area ID”. ExternalLinkCount, RelatedLinkCount, HyperLinkCount, AttachedFileCount and IterationID would be the other fields to check. To correct the issue, then execute the following: witadmin changefield /collection:<path to collection> /n:"System.ExternalLinkCount" /name:"External Link Count" Repeat for Area ID, Related Link Count, Hyperlink Count, Attached File Count and Iteration ID.  Once this is done, proceed with the commands below. witadmin importwitd /collection:<path to collection> /p:<project> /f:"<path to downloaded template>\MSF for CMMI Process Improvement v5.0\WorkItem Tracking\TypeDefinitions\TestCase.xml" witadmin importwitd /collection:<path to collection> /p:<project> /f:"<path to downloaded template>\MSF for CMMI Process Improvement v5.0\WorkItem Tracking\TypeDefinitions\SharedStep.xml" witadmin importcategories /collection:<path to collection> /p:<project> /f:"<path to downloaded template>\MSF for CMMI Process Improvement v5.0\WorkItem Tracking\categories.xml" Modifications to the Bug Definition: First step is to export the existing definition. witadmin exportwitd /collection<path to collection> /p:<project> /n:bug /f:"<path to downloaded template>\MSF for CMMI Process Improvement v5.0\MyBug.xml" Make modifications to recently exported MyBug.xml file.  Details for the modification are here:  http://msdn.microsoft.com/en-us/library/ff452591.aspx#ModifyTask Once the changes are done, proceed with the import command witadmin importwitd /collection:<path to collection> /p: <project> /f:"<path to downloaded template>\MSF for CMMI Process Improvement v5.0\MyBug.xml" Repeat the process for the the Scenario or Requirement Type Definition witadmin exportwitd /collection<path to collection> /p:<project> /n:requirement /f:"<path to downloaded template>\MSF for CMMI Process Improvement v5.0\MyRequirement.xml" Make modifications to recently exported MyRequirement.xml file.  Details for the modification are here:  http://msdn.microsoft.com/en-us/library/ff452591.aspx#ModifyTask Once the changes are done, proceed with the import command witadmin importwitd /collection:<path to collection> /p: <project> /f:"<path to downloaded template>\MSF for CMMI Process Improvement v5.0\MyRequirement.xml" Provide the Bug Field Mapping definition, after creating the file as specified here: http://msdn.microsoft.com/en-us/library/ff452591.aspx#TCMBugFieldMapping tcm bugfieldmapping /import /mappingfile:"<path to downloaded template>\MSF for CMMI Process Improvement v5.0\bugfieldmappings.xml" /collection:<path to collection> /teamproject:<project name>

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  • Can a programmer get too smart for their own good?

    - by P.Brian.Mackey
    The more I learn about programming, the more things I see that could be improved by a great deal. Often, a companies process management is total SWAG or they have Frames based websites written recently, .NET 1.1 based code, no separation of concerns, poor quality control...I could go on and on and on... Projects can succeed, but there tends to be so much waste I am amazed at how much time and money a company can throw away. I've seen it happen at several companies. So is it that ignorance truly is bliss? UPDATE Question "How is it that top developers (I don't mean like Jon Skeet level, I mean guys who are dedicated enough to hit a forum and try for self-improvement) even want to code anymore after they see the often insurmountable sociological and technical problems they are told to fix, but then scolded for doing so? "

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  • Android Development: MVC vs MVVM

    - by Mel
    I've started coding for android and I'm having difficulty trying to properly partition my code. I always end up with a very tight coupling between my UI logic and the actual controls I use to represent them. I have background in both WPF MVVM and ASP.net MVC so I'm familiar with those patterns. After some digging, I found Android Binding. It seems nice and fits nicely with my WPF background. However, it bugs me that its not built in. I'm pretty sure that the android makers have thought of this when designing the android programming interface. So my question is, what is the best practice pattern to use when developing in android, if any. I have looked and looked at their site but didn't find anything...

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  • Windows Azure: Server and Cloud Division

    - by kaleidoscope
    On 8th Dec 2009 Microsoft announced the formation of a new organization within the Server & Tools Business that combines the Windows Server & Solutions group and the Windows Azure group, into a single organization called the Server & Cloud Division (SCD). SCD will deliver solutions that help our customers realize even greater benefits from Microsoft’s investments in on-premises and cloud technologies.  And the new division will help strengthen an already solid and extensive partner ecosystem. Together, Windows Server, Windows Azure, SQL Server, SQL Azure, Visual Studio and System Center help customers extend existing investments to include a future that will combine both on-premises and cloud solutions, and SCD is now a key player in that effort. http://blogs.technet.com/windowsserver/archive/2009/12/08/windows-server-and-windows-azure-come-together-in-a-new-stb-organization-the-server-cloud-division.aspx   Tinu, O

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  • Speech to text converter [closed]

    - by user17222
    Hello! Sorry for my bad English ;) I want to write an application which converts speech to text, by the help of some tutorials from another web sites, I have did this application in visual basic,but it converts just English words,I used SAPI,Speech SDK 5.1 from Microsoft. What about another languages,(ex:Russian)is it possible? Well, should i create my own engine or is it possible to modify English language engine? Pls give me any ideas?any advices.

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  • Trying to setup first DirectX project (don't understand the error) [on hold]

    - by user1157885
    I've just started learning DirectX with the book "3D Game Programming with DirectX". I just finished setting up all the paths and adding the code to the project which I think I did correctly, but I get this massive error which I don't really understand and is hard to google. Could someone tell me what it means and how to fix it? Error 1 error TRK0002: Failed to execute command: ""C:\Program Files (x86)\Microsoft DirectX SDK (June 2010)\Utilities\bin\x64\fxc.exe" /nologo /Emain /Fo "C:\Desktop\DirectX 11 Projects\box\Win32Project2\Debug\color.cso" /Od /Zi "....\Book Files\3DGameProg\DVD\Code\Chapter 6 Drawing in Direct3D\Box\FX\color.fx"". The handle is invalid.

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  • Reuseable Platform For Custom Board Game

    - by George Bailey
    Is there a generic platform to allow me to customize the rules to a board game. The board game uses a square grid, similar to Checkers or Chess. I was hoping to take some of the work out of creating this computer opponent, by reusing what is already written. I would think that there would be a pre-written routine for deciding which moves would lead to the best outcome, and all that I would need to program is the pieces, legal moves, what layout constitutes a win/lose or draw, and perhaps some kind of scoring for value of pieces. I have seen chess programs that appear to use a recursive routine, so they think anywhere from 2 to 20 moves ahead to create varying degrees of difficulty. I have noticed this on chess.com. The game I am programming will not be as complex. Is there a platform designed to be re-used for different grid/piece based games. JavaScript would be preferable, but Java or Perl would be acceptable.

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  • Programmers that need a lot of "Outside Help" - Is this bad?

    - by Zanneth
    Does anyone else think it's kind of tacky or poor practice when programmers use an unusual amount of libraries/frameworks to accomplish certain tasks? I'm working with someone on a relatively simple programming project involving geolocation queries. The guy seems like an amateur to me. For the server software, this guy used Python, Django, and a bunch of other crazy libraries ("PostGIS + gdal, geoip, and a few other spatial libraries" he writes) to create it. He wrote the entire program in one method (in views.py, nonetheless facepalm), and it's almost unreadable. Is this bad? Does anyone else think that this is really tacky and amateurish? Am I the only minimalist out there these days?

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  • Improving without mentor

    - by speeder
    Although I consider myself not much experienced, I keep landing in jobs as the leader somehow (in the current one I am tech director of the company, in a previous one I was the R&D head). I understand why this happen (I have a certain specific set of skills, and I use some uncommon programming languages), my issue is: I cannot find a mentor... I know there must be stuff to me learn, and I notice as I work over the years that I am slowly learning more and more, but I believe that there are some way to get better much faster than just coding... So, how I improve when there are no other person in the company to teach me, or to me read their code? (or fix their code even...) I think I am beyond books, but way below a "master" level, so I don't know where to learn more.

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  • Multiple Object Instantiation

    - by Ricky Baby
    I am trying to get my head around object oriented programming as it pertains to web development (more specifically PHP). I understand inheritance and abstraction etc, and know all the "buzz-words" like encapsulation and single purpose and why I should be doing all this. But my knowledge is falling short with actually creating objects that relate to the data I have in my database, creating a single object that a representative of a single entity makes sense, but what are the best practises when creating 100, 1,000 or 10,000 objects of the same type. for instance, when trying to display a list of the items, ideally I would like to be consistent with the objects I use, but where exactly should I run the query/get the data to populate the object(s) as running 10,000 queries seems wasteful. As an example, say I have a database of cats, and I want a list of all black cats, do I need to set up a FactoryObject which grabs the data needed for each cat from my database, then passes that data into each individual CatObject and returns the results in a array/object - or should I pass each CatObject it's identifier and let it populate itself in a separate query.

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  • Do employers prefer software engineering over CS majors?

    - by Joey Green
    I'm in grad school at a university that was one of the first to have a software engineering accredited program. My undergrad is in CS. An employer recently recruited at our university and hired 5 SE majors. None of them were CS. Do employers prefer software engineering majors? The reason I ask is because I can focus on many different areas during my graduate studies and really want to take the classes that will help me land a great job. Right now I'm either going to use CUDA and parallelize an advanced ray-tracer for a graduate project or do research on non-photo-realistic rendering in augmented reality. Pursuing these would leave very little SE classes in my schedule. If I went the software engineering route, I would probably either do research into data-oriented programming or software design complexity. Sometimes I think when I'm 40 and look back will it matter at all? For some reason I'm thinking not.

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