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• Searching for fast skeletal animation algorithm

  - by igf

  Is it theoretically possible to dynamicaly animate scene with 100-150 400 poly characters meshes on high-end GL ES 2.0 mobile devices or i definetley should use prerendered keyframe animation? Scene have only one light source and precalculated shadow maps. View from top like in Warcraft 3. No any other meshes or objects. 2d collision detecting between objects calculated via spatial hashing. It can be any other algorithm besides ragdoll, but it must supply fast and simple skeletal animation for frame with 100+ low poly meshes for each mesh. Any ideas?

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• How to devise instruction set of a stack based machine?

  - by Anindya Chatterjee

  Stack based virtual machines like CLR and JVM has different set of instructions. Is there any theory behind devising the instruction set while creating a virtual machine? e.g. there are JVM instruction sets to load constants from 0-5 onto the stack iconst_0 iconst_1 iconst_2 iconst_3 iconst_4 iconst_5 whereas in CLR there are instruction set to load number from 0 to 8 onto the stack as follows ldc.i4.0 ldc.i4.1 ldc.i4.2 ldc.i4.3 ldc.i4.4 ldc.i4.5 ldc.i4.6 ldc.i4.7 ldc.i4.8 why there is no ldc.i4.9 and if ldc.i4 is there why we need the above opcodes? And there are others like these. I am eager to know what is the reason behind this difference between opcodes of different VMs? Is there any specific theory to devise these opcodes or it is totally driven by the characteristics of the VM itself or depends on the high-level language constructs?

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• ISO 12207: SQA as a supporting process?

  - by user970696

  I have been following ISO12207 for the sake of my thesis dealing with software quality. Now I should explain quality assurance and here comes the problem: according to this norm, QA is a supporting process, separated but on the same level with verification, validation and auditing processes. According to other sources, Quality Assurance is basically high level activity making sure that standards, norms etc. are being followed. Usually the part of Quality Assurance is the Quality Control (testing, reviewing, inspections also V&V) which measures the quality and provides QA with this information so it can be acted upon. I somehow do not understand how QA is thought to be according to this ISO and what activities should it perform. Also it does not mention QC except for a footnote.

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• Introduction to JBatch

  - by reza_rahman

  It seems batch processing is moving more and more into the realm of the Java developer. In recognition of this fact, JBatch (aka Java Batch, JSR 352, Batch Applications for the Java Platform) was added to Java EE 7. In a recent article JBatch specification lead Chris Vignola of IBM provides a high level overview of the API. He discusses the core concepts/motivation, the Job Specification Language, the reader-processor-writer pattern, job operator, job repository, chunking, packaging, partitions, split/flow and the like. You can also check out the official specification yourself or try things out with the newly released Java EE 7 SDK.

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• Unable to show correctly symbolic icons with appindicator

  - by user1502508

  I'm creating an app under Ubuntu 12.04 and using libappindicator and Vala. I want to use a symbolic icon, to ensure that the colors are adapted to the background in the status bar. Unfortunately, I'm unable to make it work. I installed my icons (which uses the BEBEBE key color) and they are shown, but the color is BEBEBE, not white or black like the other icons. I also tried to put an icon that I was sure to be symbolic (audio-volume-high-symbolic) but, again, it's shown with the original colors, instead of them being replaced by the current FG color. I used both set_icon and set_icon_full methods, but none of them worked :(

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• When should code favour optimization over readability and ease-of-use?

  - by jmlane

  I am in the process of designing a small library, where one of my design goals is that the API should be as close to the domain language as possible. While working on the design, I've noticed that there are some cases in the code where a more intuitive, readable attribute/method call requires some functionally unnecessary encapsulation. Since the final product will not necessarily require high performance, I am unconcerned about making the decision to favour ease-of-use in my current project over the most efficient implementation of the code in question. I know not to assume readability and ease-of-use are paramount in all expected use-cases, such as when performance is required. I would like to know if there are more general reasons that argue for a design preferring more efficient implementations—even if only marginally so?

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• TypeScript for Visual Studio 2012

  - by TATWORTH

  Originally posted on: http://geekswithblogs.net/TATWORTH/archive/2013/06/21/typescript-for-visual-studio-2012.aspxAt http://www.microsoft.com/en-us/download/details.aspx?id=34790, Microsoft provide a free download of TypeScript for Visual Studio 2012. The documentation site is at http://www.typescriptlang.org/It is described as TypeScript is a language for application-scale JavaScript development.TypeScript is a typed superset of JavaScript that compiles to plain JavaScript.Any browser. Any host. Any OS. Open Source.TypeScript starts from the syntax and semantics that millions of JavaScript developers know today.TypeScript compiles to clean, simple JavaScript code which runs on any browser, in Node.js, or in any other ES3-compatible environment.With TypeScript, you can use existing JavaScript code, incorporate popular JavaScript libraries, and be called from other JavaScript code.These features are available at development time for high-confidence application development, but are compiled into simple JavaScript.If you have written JavaScript, you will know why I welcome the release of version 0.9 of TypeScript as TypeScript should be a lot less frustrating to write. I suggest you go to https://typescript.codeplex.com/ and follow this very promising project.

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• Would you hire a computer scientist which refuses to use computers? [closed]

  - by blueberryfields

  Imagine that you're interviewing a brilliant CS grad. He's just finished school, has very high grades, and has been performing very well on the interview so far. You reach a point near the end, where you're starting to speak about terms of employment, salary, etc.., and you're trying to show off the environment he'll be working in. When you mention that programmers at your company have systems with two monitors, the interviewee stops you and informs you that he won't need a computer. He only ever writes code by hand, in a note-book, and relies on his phone for sending/receiving email. This is not something he's willing to budge on. Would you still hire him? How good would he have to be for you to hire him? What would you hire him to do, if you do hire him? (the student is modelling himself on E.W. Djikstra)

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• What is an effective way to organize tasks for a new project?

  - by Dulan

  Is there a practical solution to organizing the initial tasks for a new project? To elaborate, imagine the features/stories/goals are laid out for a project. How might one go about organizing those into sane tasks for the first few versions? The scenario I typically have in mind has the features listed as a high-level reference for what the end user-experience should involve. The tasks for constructing such features are then broken down into chunks (such as "create interface for X component"). Such a task is not necessarily "tied" to only that feature and may be useful when building subsequent features. Is breaking features down into small, code-able solutions valid? Or should they be slightly removed from any specific implementation? I do not expect that there is one "right" answer to this question, but I am looking for a fairly pragmatic and unobtrusive approach. As a note, I'm looking for solutions that are independent of any tools or "systems" used for managing the tasks themselves.

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• Balancing Player vs. Monsters: Level-Up Curves

  - by ashes999

  I've written a fair number of games that have RPG-like "levelling up," where the player gains experience for killing monsters/enemies, and eventually, reaches a new level, where their stats increase. How do you find a balance between player growth, monster strength, and difficulty? The extreme ends of this spectrum are: Player levels up really fast and blows away monsters without much effort Monsters are incredibly strong and even at low levels, are very difficult to beat I've also tried a strange situation of making enemies relative to players, i.e. an enemy will always be at 50% or 100% or 150% of player stats (thus requiring the player to use other techniques instead of brute strength to succeeed). But where's the balance, and how do you find it? Edit: For example, I am expecting to hear things like: Balance high instead of balance low (200 HP and 20 str is easier to balance than 20 HP and 2 str) Look at easiest vs. hardest monsters, and see what you have in terms of a range

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• How to determine if class meets single responsibility principle ?

  - by user1483278

  Single Responsibility Principle is based on high cohesion principle. The difference between the two is that highly cohesive classes feature a set of responsibilities that are strongly related, while classes adhering to SRP have just one responsibility. But how do we determine whether particular class features a set of responsibilities and is thus just highly cohesive, or whether it has only one responsibility and is thus adhering to SRP? Namely, isn't it more or less subjective, since some may find class very granular ( and as such will consider a class as adhering to SRP ), while others may find it not granular enough?

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• What are the technial and programming requirements for writing a stealth keylogger?

  - by user970533

  I'm planning to write/code one such stealth keylogger that would bypass detection by a certain antivirus. (I don't want to name the vendor as I know how good Google queries are against StackExchange websites). I don't want to just download any keylogger from internet and try to encode it to evade detection. Writing code myself I would have the ability to make changes as I go; obscuration on both high-level and low-level language. I like control too. It seems naive but is it true that keyloggers are a thing of the past, probably because of how effective AV's have become in detecting such programs? I want some nice points on how can one easily write a robust, effective key logger preferably for a Windows environment?

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• How to apply a filter to the screen of a running program?

  - by Shahbaz

  The idea is to take old games without modifying them, but have the graphics card apply a series of filters to their output before sending them to the monitor. A very crude example would be to take a game that has a resolution of 640x480 and do: Increase the resolution to 1280x960 Apply a blur (low pass filter) Apply a sharpen (1 + high pass filter) These steps may not necessarily be the best to improve the visuals of an old game, but there are a lot of techniques that are well-known in image processing for this purpose. The question is, do the (NVidia) graphics cards give the ability to load a program that modifies the screen before sending it to the monitor? If so, how are they called and what terminology should I use to search? I would be comfortable with doing the programming myself if this ability is part of a library. Also, would the solution be different between Windows and Linux? If so, either is fine, since most of the games are probably runnable by wine.

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• Any frameworks or library allow me to run large amount of concurrent jobs schedully?

  - by Yoga

  Are there any high level programming frameworks that allow me to run large amount of concurrent jobs schedully? e.g. I have 100K of urls need to check their uptime every 5 minutes Definitely I can write a program to handle this, but then I need to handle concurrency, queuing, error handling, system throttling, job distribution etc. Will there be a framework that I only focus on a particular job (i.e. the ping task) and the system will take care of the scaling and error handling for me? I am open to any language.

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• Terra lang and Lua

  - by msalese

  I was reading on terralang site about terra language as "a new low-level system programming language that is designed to interoperate seamlessly with the Lua programming language..." Zach DeVito (the main author) write about the use of terra : A scripting-language with high-performance extensions..... An embedded JIT-compiler for building languages..... A stand-alone low-level language.... But (may be my fault) I don't understand if terra is: a luaJit competitor a better system to interface with c library something better than luaJit using llvm Can someone help me to better understand what is going on terralang project ? Thanks

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• New Blog Location

  - by Kelly Cassidy

  It's been almost 4 years since I last logged into this site, but when I search my name I still rank high for people searching for me! I didn't realize I was so popular!Well, I've obviously since abandonded this blog and don't really want to maintain a blog in 2 locations now that I am getting back into it. (At least, not at this time - if I can figure out how to cross-post things may change...) I can instead be found at http://mindfulsanity.com where I have posted more frequently in the last few months on a few things web and other experiences and will continue to do so. I hope to do 2 posts per week, time permitting, and topic permitting. Enjoy!

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• BPM in Financial Services Industry

  - by Sanjeev Sharma

  The following series of blog posts discuss common BPM use-cases in the Financial Services industry: Financial institutions view compliance as a regulatory burden that incurs a high initial capital outlay and recurring costs. By its very nature regulation takes a prescriptive, common-for-all, approach to managing financial and non-financial risk. Needless to say, no longer does mere compliance with regulation will lead to sustainable differentiation. For details, check out the 2 part series on managing operational risk of financial services process (part 1 / part 2). Payments processing is a central activity for financial institutions, especially retail banks, and intermediaries that provided clearing and settlement services. Visibility of payments processing is essentially about the ability to track payments and handle payments exceptions as payments flow from initiation to settlement. For details, check out the 2 part series on improving visibility of payments processing (part 1 / part 2).

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• What good free forum engines are out there? [closed]

  - by user1306322

  I'm looking for a forum engine for my website, which will look modern, easy to use and follow lengthy discussions. Most of the times people hear "forum" they imagine unresponsive phpBB with terrible color scheme and unnecessarily huge user info sections (avatar, signature) about 600px high each, which make it impossible to see more than 5 posts on a really big screen. I'd like it to be the other way around with my future forum. Features I'd like to see: Clean, transparent section/thread selection, Must not have "message posted, you will be redirected to wherever" screens, 1-click message posting (captchas are ok, but not the ones that erase the whole post when you mistype), Tree hierarchy for comments to posts

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• Best in-depth analytics or stats tools? (preferrably server-side)

  - by Litso

  Hey all, I know there's been questions about this before, but mine is a little more specific. I work for a high traffic website and we want to start tracking our visitors better. Unfortunately, Google Analytics is not an option at the moment, so what I'm looking for is some alternatives, preferrably server-side (but not necessarily). We're currently running Urchin, but what I'm missing most there is the way you can set conversions in Analytics and then track (for example) which keywords convert better or which landing pages convert better. Also, A/B testing is something I really miss. Which analytics tools can be compared to analytics in terms of advanced segmentation, navigation summaries, A/B testing, etc?

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• Reasons to use C++ ?

  - by RodH257

  I've read here and in other places that learning C++, C or other low level languages are a must to get a more low level perspective on development. I agree with this, but I find it hard to find a reason to use C++ over C# or similar languages. Most of the work I do is web based, so there's no need for C++ there. Other work is windows based, and most things work fine in C# there, so what sort of situation could I use C++? I don't do any high performance stuff, nor do I create games, mostly business applications. I'm looking for an excuse to expand on my C++ knowledge but I need some motivation other than 'because the internet said I should'.

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• Join the CodePlex community on Geeklist

  Community is very important to us at CodePlex. And we love partnering with other like-minded organizations. Geeklist is one of the new kids on the block, building a great place for geeks to share what they've done, who they did it with and connect with great companies and communities.     There are some exciting new experiences coming on-line soon that you won’t want to miss out on. Geeklist is currently in private beta, so if you don't already have an account, use the CodePlex invite code to create your own account. Then, join the CodePlex community and follow the CodePlex team on Geeklist. Once you’ve joined, be proud, tell the world what you have worked on, and who you did it with. And don’t be shy to give out a few high fives to the amazing work others in the community have created.

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• How to connect to the internet via command line or graphical utility given I can't click at the top of the screen?

  - by Ben

  My Ubuntu 12.04 installation has an input problem resulting preventing me from clicking near the top of the screen. That is, there is an unclickable area, circa 60 pixels high and stretching all the way across the screen. I will ask about this in a later question. For now, I would just like to be able to connect to the internet, given this limitation. I am able to access the network connections application by hitting the super key and typing "network connections". There is a LAN and a wireless network available. The network icon in the bar at the top of the screen shows an empty wedge, which I suppose means that wireless is off. I've attached the cable for the Ethernet connection, but it does not seem to have connected automatically. How can I figure out what's going on? (I'll happily edit in the output of any relevant terminal commands.) Thank you.

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• How to organize my site's file system properly?

  - by Wolfpack'08

  Doing some reading on Stack Overflow, I've found a lot of information suggesting that proper organization of a file system is crucial to a well-written web app. One of the key pieces of evidence is high-frequency references to "separation of concerns" in questions related to keeping programs organized. Now, I've found some information on organizing file systems (Filesystem Hierarchy Standard) from 2004. It raises only two concerns: first, the standard's a bit dated, so I believe it may be possible to do better given the changes in technology over the past 8 years; second, and most important, my application is very small compared to an entire Linux distro. I think that the file system should be organized very differently because of that. Here's what I'm looking at, currently: /scripts, /databases, /www -> /dev, /production -> login, router, admin pages, /sites -> content types, static pages /modules, /includes, /css, /media -> /module-specific-media

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• New! EBS CRM Service Request Templating Online

  - by Oracle_EBS

  In an effort to improve the user experience changes have been made to Service Request (SR) creation process using My Oracle Support (MOS). This change is now online for several high-use CRM products. We aimed to streamline the process by reducing the number of questions, making subsequent questions conditional on previous responses, reducing lists of problem categories, and recommending key documents/evidence which should be supplied to help the Support engineer progress the issue. The process is now divided into three steps: Problem - prompts for a summary of the issue, and what steps have to be performed to re-produce the issue More Information - users will see the biggest change, as they select the ‘Problem Type’, which then presents a series of suggested attachments to upload Severity/Contact - section records who to contact, by what means, and the degree of urgency for the issue. The products included are: · Incentive Compensation · Trade Management · Site Hub · Incentive Compensation Analytics for Oracle Data Integrator · TeleService · Install Base · Quoting · Sales · Field Service · Service Contracts

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• Battery issues on Dell Inspiron XPS14z Ultrabook

  - by querolus

  I'm new in the Ubuntu world. I just bought a Dell Inspiron XPS 14z Ultrabook and installed Ubuntu to dual boot with Windows thanks to the Ubuntu Secured Remix package. Everything works fine except the battery. I have, at most, 1h 30' battery life. With windows it can last more than 3h. Moreover, and I guess it's related to the battery issues, the fan is constantly running at high speed while it does not when working with windows. Do you know where can be the problem?

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