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  • which is better performance, using a disposable local variable or reusing a global one?

    - by petervaz
    This is for an android game. Suppose I have a function that is called several times for second and do some calculations involving an arraylist (or any other complex objects for what matter). Which approach would be preffered? local: private void doStuff(){ ArrayList<Type> XList = new ArrayList<Type>(); // do stuff with list } global: private ArrayList<Type> XList = new ArrayList<Type>(); private void doStuff(){ XList.clear(); // do stuff with list }

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  • Presenting to the New England SQL Server Users Group 10 Jun 2010!

    - by andyleonard
    I am honored to present Applied SSIS Design Patterns to the New England SQL Server Users Group on 10 Jun 2010! This is a reprise of the spotlight session presented at the PASS Summit 2009. Abstract "Design Patterns" is more than a trendy buzz phrase; design patterns are a way of breaking down complex development projects into manageable tasks. They lend themselves to several development methodologies and apply to SSIS development. Chances are you're using your own design patterns now! In this spotlight...(read more)

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  • I can't link my Algorithms and the problem idea with writing the code?

    - by Novice Programmer
    First ,, i have just learnt c , c++ and started with java .. i faced serious problem in the first two ones . any sort of problem i can handle with it on my mind ,, if it's much complex i use the pen and paper method , i nearly could solve any easy problem ,, but when i start to write the code i don't know what's happening i got totally lost and even the best problems i can't link the solution with the code . it's not a problem with syntax because i know the syntax well . i need to figure what's the problem and find a way to solve it !! thanks . (Excuse me for my bad English)

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  • Good technologies for developing a modular server component in .net?

    - by nubbers
    I am using WPF, Prism and Unity to develop the user interface for a .net application. The UI will run from a PC, but I also need to develop a separate complex server component that will provide services to the PC component via WCF. Prism and Unity have proved to be of great value in creating a modular application, at least as far as the user interface is concerned. I would also like to make the server component modular, but I cannot find anywhere what techniques, patterns and technologies are suitable. I have considered: Unity or one of the other DI containers Selected parts of Prism, such as modules and events Are these suitable for developing a modular server component? Or are these UI technologies only and should I be looking at something completely different?

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  • Law of Demeter in MVC regarding Controller-View communication

    - by Antonio MG
    The scenario: Having a Controller that controls a view composed of complex subviews. Each one of those subviews is a separated class in a separate file. For example, one of those subviews is called ButtonsView, and has a bunch of buttons. The Controller has to access those buttons. Would accessing those buttons like this: controllerMainView.buttonsView.firstButton.state(); be a violation of the LOD? On one hand, it could be yes because the controller is accessing the inner hierarchy of the view. On the other, a Controller should be aware of what happens inside the view and how is composed. Any thoughts?

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  • Is programming a SubCulture? [closed]

    - by Trufa
    I was going through this article: http://en.wikipedia.org/wiki/Subculture Which got mee thinking is programming a subculture? After the a while I started thinking it really hard, and if you go really in depth this is a very complex and interesting question to ask. YOu can even ask yourself if (heavy) internet (social) users are an subculture and programmers a culture within. I think it might be an interesting discussion, hope you like it! NOTE: I linked the wiki article because it might be a good baseline, maybe you can base you answer on Ken Gelder´s proposal to distinguish subcultures. But it should be based on a little bit more that intuition. Thanks in advance! Trufa

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  • How can I learn to write idiomatic C++?

    - by yati sagade
    I am a computer science student, and as a result, I was taught C++ as a better version of C with classes. I end up trying to reinvent the wheel whenever a solution to a complex problem is needed, only to find sometime after that, some language feature or some standard library routine could potentially have done that for me. I'm all comfortable with my char* and *(int*)(someVoidPointer) idioms, but recently, after making a (minor) contribution to an open-source project, I feel that is not how one's supposed to think when writing C++ code. It's much different than C is. Considering that I know objected-oriented programming fairly well, and I am okay with a steep learning curve, what would you suggest for me to get my mind on the C++ track when I'm coding C++?

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  • Progressing past CRUD applications in PHP?

    - by Anonymous -
    I've been programming in PHP for about a year and am at the following stage: Have a good 'feel' for the language Can create CRUD applications competently Can utilize an MVC structure to allow for future expansion of code Using the points listed above, I've created a number of my own applications for practise - including but not limited to; a forum, social network etc. My question may be a little vague but should hopefully be answerable. I feel as though there isn't anything else I would need to know about PHP to allow me to create websites, though I'm sure I'm wrong. What advanced/complex PHP topics could I look at that have a real-world use and will allow me to enhance both my skill as a programmer and applications in general? Recently I've looked a lot more at javascript/jQuery allowing me to give my applications a richer user interface which has been a great learning experience and proving very useful.

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  • April 11: Live Webcast for Oracle Configuration Controls Governor (CCG) for PeopleSoft 9.1

    - by Theresa Hickman
    Are you a PeopleSoft 9.1 Financials, HCM, or Campus Solutions customer who would like to know how you can automatically track changes to key configurations of these applications? With increasing regulatory requirements and the complex reporting required to meet these corporate compliance objectives, manual tracking of changes is not the ideal option and is prone to error and increased risk for fraud. Speakers from Oracle, Accenture & FulcrumWay will explain the business benefits of Oracle GRC change management solutions and present a business use case using a leading Healthcare company.  When: April 11, 2012 Time: 11:00 am (PST); 2:00pm (EST) Duration: 1 hr Register Now!

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  • How I improve my problem-solving ability

    - by gcc
    How we can improve our problem-solving ability ? Every one says same thing "real programmer knows how to handle real problem.", but they forget something how they take this ability, or where ( I know in school, no one gives us any ability, of course in my opinion. ) If you have any idea except above ones, feel free when you give an advice solve more problem do more exercise, write code, search google then write more ... For me, my question is like "Use complex/known library instead of using your own." In other words, I want your experience, book recommendation, web page

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  • Didn't you have problems with upgrade from 11.10 to 12.04 (libre office)?

    - by Pascal Paulus
    This is the first time I'm repporting something hoping that it can be usefull for you. When updating from 11.010 to 12.04 (what include updating Libre office I supose), I can't any more work with any document that was originally made in Libre office. Every change freezes the screen, I can't save anything... I'm talking of complex documents, with lots of internal references and footnotes and some propor text styles of about 230 pages (phd work) I wanted to alert you that probabely something is wrong but as I don't have any tecnical knowledge, I don't know what could be usefull to help you in your great job of making good free software. My little desktop has 2Gb of Ram memory and an atom processor (I can look for more details if that would be usefull to you)

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  • Is there a way to continue a partially finished MinGW build?

    - by vsz
    I am just trying to become familiar with MinGW (and with more complex command-line compiler tools) I have a really giant project to build, I successfully managed to generate the makefile with CMake, and started mingw. After more than an hour of hard work, and building dozens of libraries successfully, the build ended in an error. It seems I added an option in CMake which is not supported in my system. My problem is, I cannot figure out a way to just skip that library and continue with the build process. If I remove the option in CMake and start mingw again, it starts from the beginning and rebuilds everything, even those libraries which are already built.

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  • Data-driven animations

    - by saadtaame
    Say you are using C/SDL for a 2D game project. It's often the case that people use a structure to represent a frame in an animation. The struct consists of an image and how much time the frame is supposed to be visible. Is this data sufficient to represent somewhat complex animation? Is it a good idea to separate animation management code and animation data? Can somebody provide a link to animations tutorials that store animations in a file and retrieve them when needed. I read this in a book (AI game programming wisdom) but would like to see a real implementation.

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  • What job is most similar to being a DBA?

    - by fatherjack
    As long as I have worked with computers, and that's a length of time that may be easier on the eye when converted to dog-years, computers have been compared with cars. I guess the car was the most complicated thing in our lives until the PC arrived. We had plenty of time to get used to the car and how it worked, or not, and how it gradually became more complex. We can compare backups to spare tyres, CPU cores to pistons ("the more you blow, the faster you go"), and so on. I am not aware...(read more)

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  • How to morph from a programmer noob to a guru?

    - by didxga
    I have been a programmer for two years, and i am getting hard to level up my skill especially working at legacy code maintenance right now. I think working hard is not enough to elevate my skill, because there are ton of opensource around us, the preoject i have been involved are all mixture of opensources --- from front end to back end from presentation tier to business logic tier. My work is just gluing all these together or something fewer complex which is to collect data from UI to logic module then retrieve the data processed and put it to UI. Sometime there is a need to add some simple logic(like assembling the data to a form that fit business logic interface) while transport data. Could you please give me any suggestion what should i do on the side to improve my skill? Thanks!

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  • Can a domain specific language be used to representing the Open SRD

    - by NeoModulus
    I am in the early stages of creating an open source C# library that would allow developers to drop in the open SRD (http://www.d20srd.org/) into an existing project. Abstracted it is a complex set of tightly coupled business rules. Having previously worked on an adaptive object model project for health care risk management I began with that pattern in mind. Due to the high coupling of rules it is becoming apparent that the project may require some kind of scripting. Have started researching DSL implementation I am now considering scraping the adaptive object model for a domain specific language. I have not work with domain specific languages so my question is it reasonable to assume a domain specific language can be used to representing the open SRD?

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  • Fast language for problem solving? [closed]

    - by Friend of Kim
    I learned PHP to make websites. After some years I've started using programming for solving what is difficult tasks for my level. Now I want to make a program that solves equations. (I want to write it myself, not use an API. Because I'm doing this for the sake of the challenge, not for the result..) Because of this, I'm going to learn a new and faster/better language. It's going to be C++, Java, Python or C#. What are the benefits of each language, and which language is best for speed compared to speed of writing and readability? Using C would be lightning fast, but the lack of OO is making for more complex code and reduces the readability, for example..

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  • Without using a pre-built physics engine, how can I implement 3-D collision detection from scratch?

    - by Andy Harglesis
    I want to tackle some basic 3-D collision detection and was wondering how engines handle this and give you a pretty interface and make it so easy ... I want to do it all myself, however. 2-D collision detection is extremely simple and can be done multiple ways that even beginner programmers could think up: 1.When the pixels touch; 2.when a rectangle range is exceeded; 3.when a pixel object is detected near another one in a pixel-based rendering engine. But 3-D is different with one dimension, but complex in many more so ... what are the general, basic understanding/examples on how 3-D collision detection can be implemented? Think two shaded, OpenGL cubes that are moved next to each other with a simple OpenGL rendering context and keyboard events.

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  • How do I debug a cluster running Microsoft server 2003?

    - by alcor
    I'm sole developer of a complex critical software system, written in Visual C++ 2005. It's deployed on a classical Microsoft cluster scenario (active/passive), that has Windows Server 2003 R2. If a server A goes down, the other one (B) starts and take the ownership of its duties. You have to know that: Both servers have the same Microsoft patches/fixes, same hardware, same everything. Both servers use the same memory storage (a RAID-6 through fiber channel). This software has a main module that launches the peripheral modules. if a peripheral module crashes, the main module restarts it. When I switch the application in one of the two servers (let's say the B server) two of the peripheral modules of the main applications just started to crash apparently without reason about 2 seconds after the start of the peripheral module. What could I do to analyze/inspect/resolve this weird situation?

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  • Personal Activity Monitor tracks time you spend using desktop apps

    Up until a couple of years ago, I used to turn to RescueTime to figure out how I spend my time online. Then it got too complex, and I stopped using it. Personal Activity Monitor is like a vastly dumbed-down version of RescueTime, and I mean that as a compliment. It's free and bare-bones -- all it does is track what applications you're using and for how long. A big drawback at this point is that it doesn't integrate with Web browsers to help you analyze how you spend your time on the Web. Still, if your work doesn't require constant Web app use, knowing how long you've used a browser overall might be enough to help you manage your time. This is far from the only application in this space -- alternatives such as Slife and Chrometa are full-featured and impressive -- but PAM is good option for those who want a nice, simple tracker.Personal Activity Monitor tracks time you spend using desktop apps originally appeared on Download Squad on Sat, 05 Mar 2011 10:00:00 EST. Please see our terms for use of feeds.Permalink | Email this | Comments

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  • CPU spikes cause audio stuttering in Audacious when browsing? (Lubuntu)

    - by Alucai Vivorvel
    My default audio player is Audacious, browser Google Chrome. I tried Firefox, and while I love it, the CPU load spikes when doing something as simple and small and switching a tab, which causes the audio playing to stutter (as sound is onboard and handled thru the CPU). Chrome doesn't do this as much, but there is the occasional stuttering when browsing, which is ridiculous, as not even Windows Vista does this. So I thought maybe it's something to do with how Lubuntu handles sound, I checked and only ALSA was installed. I tried installing PulseAudio, but, while the music "plays", nothing comes through the speakers. Immediately after switching back to ALSA the music pours out of them. So I was wondering if you had any idea what was going on here. I asked on Ubuntu Forums but apparently my problem is too complex, as it's been over a week since the last reply. Specs are: AMD Athlon 64 3200+ @ 2GHz 2GB Corsair 667MHz DDR2 RAM ATi HD Radeon 3650 (AGP) 512MB 500W Cooler Master PSU 80GB SATA II HDD (Vista is installed on 500GB drive) Biostar K8M800 Motherboard

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  • How can I stay focused and motivated on a project?

    - by RTS
    I'm working on starting my own software development business, but I've noticed that I have major issues getting projects out by their deadlines, and in general getting them out of the "almost-done" stage. I feel my problem is that I like complex programming too much, and I end up rewriting code to make it cleaner/more efficient/less error prone as a means of putting off more "boring" development. I end up with polished applications at the end, but I spend twice as long on the project as I should have. If I ever want my company to succeed, I need to work on staying focused on what actually needs to be done, so the question is: What techniques do you use to keep yourself focused and motivated on a project, in your career?

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  • Software Engineering: Off to a Bad Start?

    - by Bob Rhubart
    The opening remarks for Real Software Engineering, Living Social developer Glenn Vanderburg's keynote presentation at QCon 2012 in San Francisco, include this: The people who started the software engineering field and movement, from the very beginning, misunderstood two very important things: software and engineering. And as a result, the field went off in the wrong direction from the very start, and legitimized certain ways of doing things and certain paths of research that really have not been very fruitful. Vanderburg's presentation is fascinating, often funny, and well worth watching, especially in light of how cloud computing and other technological shifts are redefining IT roles. Related Content Dissing Architects, or "What's wrong with this coffee?" Out of the Tower, into the Trenches Readers react to "Out of the Tower; Into the Trenches" IT Architecture, Complex Systems, and Gardening Podcast: Who Gets to be a Software Architect?

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  • Scalability of multi-threading in game server

    - by Taylor Hill
    What is a reasonable number of threads for a simple 2D mmo in Java? Is it reasonable to have two threads per connection, one for the input stream and one for the output stream? The reason I ask is because I use a blocking method on the input stream, and a workaround seems unnecessarily complex if I were to try to get around it without adding threads. This is mostly for my own edification; I don't expect to have 5 million people playing it ever, or even 5, but I'm wondering what a good scalable solution is, and if this is reasonable for a small server (<30 connections).

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  • Print all values in a value object

    - by SKDev
    I have to debug an issue which requires me to print all the values of a Value Object that is returned by a web service call. The Value object is a complex object in the sense, it has another object as its member which in turn has another object. Printing all the values by using get methods is cumbersome. So was wondering if there is a way to break down the value object by any way to get to a primitive level like String or int or Date and print them all using one API? I had a look at the below question but my prob is that i don't have access to the source code of the value object. The sources are in obfuscated jar. http://stackoverflow.com/questions/2413001/how-to-print-values-of-an-object-in-java

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