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• What is the best practice for when to check if something needs to be done?

  - by changokun

  Let's say I have a function that does x. I pass it a variable, and if the variable is not null, it does some action. And I have an array of variables and I'm going to run this function on each one. Inside the function, it seems like a good practice is to check if the argument is null before proceeding. A null argument is not an error, it just causes an early return. I could loop through the array and pass each value to the function, and the function will work great. Is there any value to checking if the var is null and only calling the function if it is not null during the loop? This doubles up on the checking for null, but: Is there any gained value? Is there any gain on not calling a function? Any readability gain on the loop in the parent code? For the sake of my question, let's assume that checking for null will always be the case. I can see how checking for some object property might change over time, which makes the first check a bad idea. Pseudo code example: for(thing in array) { x(thing) } Versus: for(thing in array) { if(thing not null) x(thing) } If there are language-specific concerns, I'm a web developer working in PHP and JavaScript.

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• Low hanging fruit where "a sufficiently smart compiler" is needed to get us back to Moore's Law?

  - by jamie

  Paul Graham argues that: It would be great if a startup could give us something of the old Moore's Law back, by writing software that could make a large number of CPUs look to the developer like one very fast CPU. ... The most ambitious is to try to do it automatically: to write a compiler that will parallelize our code for us. There's a name for this compiler, the sufficiently smart compiler, and it is a byword for impossibility. But is it really impossible? Can someone provide a concrete example where a paralellizing compiler would solve a pain point? Web-apps don't appear to be a problem: just run a bunch of Node processes. Real-time raytracing isn't a problem: the programmers are writing multi-threaded, SIMD assembly language quite happily (indeed, some might complain if we make it easier!). The holy grail is to be able to accelerate any program, be it MySQL, Garage Band, or Quicken. I'm looking for a middle ground: is there a real-world problem that you have experienced where a "smart-enough" compiler would have provided a real benefit, i.e that someone would pay for?

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• Learning to be a good developer: what parts can you skip over?

  - by Andrew M

  I have set myself the goal of becoming a decent developer by this time next year. By this I mean full experience of the development 'lifecycle,' a few good apps/sites/webapps under my belt, and most importantly being able to work at a steady pace without getting sidelined for hours by some should-know-this-already technique. I'm not starting from scratch. I've written a lot of html/css, SQL, javascript, python and VB.net, and studied other languages like C and Java. I know about things like OOP, design patterns, TDD, complexity, computational linguistics, pointers/references, functional programming, and other academic/theoretical matters. It's just I can't say I've really done these things yet. So I want to get up to speed, and I want to know what things I can leave till a later date. For instance, studying algorithms and the maths behind them is interesting and all, but so far I've hardly needed to write anything but the most basic nested loops. Investigating Assembly to have a clearer picture of low-level operations would be cool... but I imagine rarely infringes on daily work. On the other hand, looking at a functional programming language might help me write programs that are more comprehensible and less prone to hidden failures (at the moment I'm finding the biggest difficulty is when the complexity of the app exceeds my capacity to understand it - for instance passing data around was fine... until I had to start doing it with AJAX, which was a painful step up). I could spend time working through case studies of design patterns, but I'm not sure how many of them get used in 'real life.' I'm a programmer with basic abilities - what skills should I focus on developing? (also my Unix skills are very weak, and also knowledge of Windows configuration... not sure how much time I should spend on that)

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• How to organize a programming course?

  - by Bogdan Gavril

  I've been given the task to train our manual testers to become developers in test (write test automation!). some have basic programing knowledge (either dabbling in PHP or reading stuff) and some who have no experience. Note that I do have teaching experience, but with real students, not employees, and one concern is that they will not put extra hours except the 20% management gave them for the transition. Language to be taught and used: C# We have 8 hours per week to do this and should decide if they will make it in 2 months. I am thinking of a combined approach: use a manual such as Head First C# (although I'm not happy with the labs, they're mostly games and I don't want to add UI complexities) have them read from the manual do labs with them, solving more and more difficult problems and explain the theoretical stuff as well have them do a bigger project towards the end Some questions: do you have a better suggestion as far as manuals go? do you have a better aproach? Focus less on labs? what kind of assesments should I use and how often? should I let them do a bigger project (bank system or small game) and how much time should I invest in that? ideeas on labs? other resources ? Any other tips would be most welcomed! Thanks!

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• Upgrading Visual Studio 2010

  - by Martin Hinshelwood

  I have been running Visual Studio 2010 as my main development studio on my development computer since the RC was released. I need to upgrade that to the RTM, but first I need to remove it. Microsoft have done a lot of work to make this easy, and it works. Its as easy as uninstalling from the control panel. I have had may previous versions of Visual Studio 2010 on this same computer with no need to rebuild to remove all the bits. Figure: Run the uninstall from the control panel to remove Visual Studio 2010 RC Figure: The uninstall removes everything for you.  Figure: A green tick means the everything went OK. If you get a red cross, try installing the RTM anyway and it should warn you with what was not uninstalled properly and you can remove it manually.   Once you have VS2010 RC uninstalled installing should be a breeze. The install for 2010 is much faster than 2008. Which could take all day, and then some on slower computers. This takes around 20 minutes even on my small laptop. I always do a full install as although I have to do c# I sometimes get to use a proper programming language VB.NET. Seriously, there is nothing worse than trying to open a project and the other developer has used something you don't have. Its not their fault. Its yours! Save yourself the angst and install Fully, its only 5.9GB. Figure: I always select all of the options.   Now go forth and develop! Preferably in VB.NET…   Technorati Tags: Visual Studio,VS2010,VS 2010

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• Constructs for wrapping a hardware state machine

  - by Henry Gomersall

  I am using a piece of hardware with a well defined C API. The hardware is stateful, with the relevant API calls needing to be in the correct order for the hardware to work properly. The API calls themselves will always return, passing back a flag that advises whether the call was successful, or if not, why not. The hardware will not be left in some ill defined state. In effect, the API calls advise indirectly of the current state of the hardware if the state is not correct to perform a given operation. It seems to be a pretty common hardware API style. My question is this: Is there a well established design pattern for wrapping such a hardware state machine in a high level language, such that consistency is maintained? My development is in Python. I ideally wish the hardware state machine to be abstracted to a much simpler state machine and wrapped in an object that represents the hardware. I'm not sure what should happen if an attempt is made to create multiple objects representing the same piece of hardware. I apologies for the slight vagueness, I'm not very knowledgeable in this area and so am fishing for assistance of the description as well!

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• So are we ever getting the technological singularity

  - by jsoldi

  I´m still waiting for an AI robot that will pass the Turing test. I keep going back to http://www.a-i.com/ and nothing. I don´t know much about AI but, did anyone ever tried to make a genetic algorithm whose evolution algorithm itself evolves? Or how about one whose algorithm that makes the genetic algorithm evolve, evolves? Or one whose genetic algorithm that makes the genetic algorithm that makes the genetic algorithm evolve, evolves? Or how about an algorithm that abstracts all this into a potentially infinitely deep tree of genetic evolution algorithms? Aren´t we just failing as programmers? And I don´t think we can blame the processors speed. If you make and application that simulates consciousness you will get a Nobel prize no matter how many hours it takes to respond to your questions. But nobody did it. It almost reminds me to Randi´s $1000000 paranormal challenge. As I keep going back to AI chat bots, they keep getting better at changing the subject on a way that seems natural. But if I tell them something like "if 'x' is 2 then whats two times 'x'?" then they don't have a clue what I'm talking about. And I don't think they need a whole human brain simulation to be able to answer to something like that. They don't need feelings or perception. This is just language and logics. I don't think my perception of the color red gives me the ability to understand that if 'x' is 2 then two times 'x' is 4. I'm sure we are just missing some elemental principle we cannot grasp because it's probably stuck behind our eyes. What do you think?

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• Introducing Programming To a Mathematician

  - by ell

  I currently am a programmer, I'm almost 16 years of age and have pretty much narrowed my careers down to something involving a Computer Science degree or Electrical Engineering degree (I know they are quite different but this question is about my friend) but my friend isn't so sure. He is very interested in maths and is very good at it and I think he would enjoy programming but he isn't willing to try it (edit he is willing to try but has never done before). Can anyone give me an suggestions for a language or tool that he could dabble in programming (at a reasonably basic level I assume) to solve maths problems or involve some kind of maths. As I say he enjoys maths a lot but I think he would enjoy programming, the problem is I don't want him to be put off by the stuff that isn't relevant at introductory levels such as memory allocation et al. I know that is very important but the point is that I want him to learn a bit of programming with maths then hopefully if he is interested enough he can start learning programming as programming. Thanks in advance, ell. Edit: Its not that he's completely uninterested - more that he hasn't actively explored the area before, maybe because he isn't informed about it. I wouldn't want to force him to do something he doesn't want to, I see this as more of a little push so that he can learn about programming. If he doesn't like it - fair enough, I can't control that and don't want to but if he turns out to enjoy it - this push will have been the right thing.

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• CodePlex Daily Summary for Monday, September 24, 2012

  CodePlex Daily Summary for Monday, September 24, 2012Popular ReleasesMetodología General Ajustada - MGA: 03.01.09: Cambios Parmenio: Envio actualizaciones al formato 3 de programación, actualizar botones en edición. Cambios John: Integración de código con cambios enviados por Parmenio Bonilla. Generación de instaladores. Soporte técnico por correo electrónico, telefónico y en sitio.JSLint for Visual Studio 2010: 1.4.0: VS2012 support is alphaBlackJumboDog: Ver5.7.2: 2012.09.23 Ver5.7.2 (1)InetTest?? (2)HTTP?????????????????100???????????Player Framework by Microsoft: Player Framework for Windows 8 (Preview 6): IMPORTANT: List of breaking changes from preview 5 Added separate samples download with .vsix dependencies instead of source dependencies Support for FreeWheel SmartXML ad responses Support for Smooth Streaming SDK DownloaderPlugins Support for VMAP and TTML polling for live scenarios Support for custom smooth streaming byte stream and scheme handlers Support for new play time and position tracking plugin Added IsLiveChanged event Added AdaptivePlugin.MaxBitrate property Add...WPF Application Framework (WAF): WPF Application Framework (WAF) 2.5.0.8: Version: 2.5.0.8 (Milestone 8): This release contains the source code of the WPF Application Framework (WAF) and the sample applications. Requirements .NET Framework 4.0 (The package contains a solution file for Visual Studio 2010) The unit test projects require Visual Studio 2010 Professional Changelog Legend: [B] Breaking change; [O] Marked member as obsolete WAF: Mark the class DataModel as serializable. InfoMan: Minor improvements. InfoMan: Add unit tests for all modules. Othe...LogicCircuit: LogicCircuit 2.12.9.20: Logic Circuit - is educational software for designing and simulating logic circuits. Intuitive graphical user interface, allows you to create unrestricted circuit hierarchy with multi bit buses, debug circuits behavior with oscilloscope, and navigate running circuits hierarchy. Changes of this versionToolbars on text note dialog are more flexible now. You can select font face, size, color, and background of text you are typing. RAM now can be initialized to one of the following: random va...Symphony Framework: Symphony Framework v2.0.0.2: Symphony Framework version 2.0.0.2. General note: If you install Symphony Framework 2.0.0.2 you must also install CodeGen 4.1.10 because a number of templates now utilise new features added to the tool. Added the user token PROJECTNAMESPACE to the “Symphony_Content.tpl” template to ensure that we can correctly reference the collection classes of the selection lists. Also added the ability to create object references to fields defined as having selection windows assigned. This enhancement ...Community xPress MDS: Initial MDS and DQS Models: Initial MDS & DQS ModelsSiteMap Editor for Microsoft Dynamics CRM 2011: SiteMap Editor (1.1.2020.421): New features: Disable a specific part of SiteMap to keep the data without displaying them in the CRM application. It simply comments XML part of the sitemap (thanks to rboyers for this feature request) Right click an item and click on "Disable" to disable it Items disabled are greyed and a suffix "- disabled" is added Right click an item and click on "Enable" to enable it Refresh list of web resources in the web resources pickerAJAX Control Toolkit: September 2012 Release: AJAX Control Toolkit Release Notes - September 2012 Release Version 60919September 2012 release of the AJAX Control Toolkit. AJAX Control Toolkit .NET 4.5 – AJAX Control Toolkit for .NET 4.5 and sample site (Recommended). AJAX Control Toolkit .NET 4 – AJAX Control Toolkit for .NET 4 and sample site (Recommended). AJAX Control Toolkit .NET 3.5 – AJAX Control Toolkit for .NET 3.5 and sample site (Recommended). Notes: - The current version of the AJAX Control Toolkit is not compatible with ...Sense/Net CMS - Enterprise Content Management: SenseNet 6.1.2 Community Edition: Sense/Net 6.1.2 Community EditionMain new featuresOur current release brings a lot of bugfixes, including the resolution of js/css editing cache issues, xlsx file handling from Office, expense claim demo workspace fixes and much more. Besides fixes 6.1.2 introduces workflow start options and other minor features like a reusable Reject client button for approval scenarios and resource editor enhancements. We have also fixed an issue with our install package to bring you a flawless installation...WinRT XAML Toolkit: WinRT XAML Toolkit - 1.2.3: WinRT XAML Toolkit based on the Windows 8 RTM SDK. Download the latest source from the SOURCE CODE page. For compiled version use NuGet. You can add it to your project in Visual Studio by going to View/Other Windows/Package Manager Console and entering: PM> Install-Package winrtxamltoolkit Features AsyncUI extensions Controls and control extensions Converters Debugging helpers Imaging IO helpers VisualTree helpers Samples Recent changes NOTE: Namespace changes DebugConsol...Python Tools for Visual Studio: 1.5 RC: PTVS 1.5RC Available! We’re pleased to announce the release of Python Tools for Visual Studio 1.5 RC. Python Tools for Visual Studio (PTVS) is an open-source plug-in for Visual Studio which supports programming with the Python language. PTVS supports a broad range of features including CPython/IronPython, Edit/Intellisense/Debug/Profile, Cloud, HPC, IPython, etc. support. The primary new feature for the 1.5 release is Django including Azure support! The http://www.djangoproject.com is a pop...Launchbar: Lanchbar 4.0.0: This application requires .NET 4.5 which you can find here: www.microsoft.com/visualstudio/downloadsAssaultCube Reloaded: 2.5.4 -: Linux has Ubuntu 11.10 32-bit precompiled binaries and Ubuntu 10.10 64-bit precompiled binaries, but you can compile your own as it also contains the source. If you are using Mac or other operating systems, please wait while we try to package for those OSes. Try to compile it. If it fails, download a virtual machine. The server pack is ready for both Windows and Linux, but you might need to compile your own for Linux (source included) Changelog: New logo Improved airstrike! Reset nukes...Extended WPF Toolkit: Extended WPF Toolkit - 1.7.0: Want an easier way to install the Extended WPF Toolkit?The Extended WPF Toolkit is available on Nuget. What's new in the 1.7.0 Release?New controls Zoombox Pie New features / bug fixes PropertyGrid.ShowTitle property added to allow showing/hiding the PropertyGrid title. Modifications to the PropertyGrid.EditorDefinitions collection will now automatically be applied to the PropertyGrid. Modifications to the PropertyGrid.PropertyDefinitions collection will now be reflected automaticaly...JayData - The cross-platform HTML5 data-management library for JavaScript: JayData 1.2: JayData is a unified data access library for JavaScript to CRUD + Query data from different sources like OData, MongoDB, WebSQL, SqLite, Facebook or YQL. The library can be integrated with Knockout.js or Sencha Touch 2 and can be used on Node.js as well. See it in action in this 6 minutes video Sencha Touch 2 example app using JayData: Netflix browser. What's new in JayData 1.2 For detailed release notes check the release notes. JayData core: all async operations now support promises JayDa...????????API for .Net SDK: SDK for .Net ??? Release 4: 2012?9?17??? ?????，???????????????。 ?????Release 3??????，???????，???，??? ??????????????????SDK，????????。 ??，??????? That's all.VidCoder: 1.4.0 Beta: First Beta release! Catches up to HandBrake nightlies with SVN 4937. Added PGS (Blu-ray) subtitle support. Additional framerates available: 30, 50, 59.94, 60 Additional sample rates available: 8, 11.025, 12 and 16 kHz Additional higher bitrates available for audio. Same as Source Constant Framerate available. Added Apple TV 3 preset. Added new Bob deinterlacing option. Introduced process isolation for encodes. Now if HandBrake crashes, VidCoder will keep running and continue pro...DNN Metro7 style Skin package: Metro7 style Skin for DotNetNuke 06.02.01: Stabilization release fixed this issues: Links not worked on FF, Chrome and Safari Modified packaging with own manifest file for install and source package. Moved the user Image on the Login to the left side. Moved h2 font-size to 24px. Note : This release Comes w/o source package about we still work an a solution. Who Needs the Visual Studio source files please go to source and download it from there. Known 16 CSS issues that related to the skin.css. All others are DNN default o...New ProjectsAndroid Hello World - Modified: SummaryAOXING: ??????CSharp WPF base64 coder-decoder: CSharp WPF base64 coder-decoder.D3 Loot Tracker: A Diablo 3 item drop tracking utility.EPiCloner: Working with EPiServer, you might need to clone site tree in a different language. EPiCloner will help you with this task taking care of updating pagereferencesGDAL SSIS: GDAL SSIS is a collection of geospatial components for SQL Server Integration Services (SSIS) that leverages GDAL to support a large number of GIS data formats.Mw3Launcher: Play Activision MW3 Multiplayer without using steam!Orchard Contrib.Navigation: This Orchard module adds additional features to the Orchard.Navigation module. Currently the module provides the following features: ActionLink menu item: map Oxygen: OxygenPSEOnline: Nothing SpecialPython Digital Circuit Simulator: This is the Digital Logical Circuit Simulator built using Python.QuickerClicker (Adapted for Gamers): A automated Clicker for Gamers.SerialPortStream: An independent implementation of System.IO.Ports.SerialPort and SerialStream for better reliability and maintainability.SERS: SERSSharePoint WarmUp: A SharePoint solution leveraging the Application Initialization module for IIS 7.5.Simple PM - Project Management Simplified !: Simple PM is a simple and easy to use Project Management Tool. It focuses on better project management for individuals working alone on a project or small team.TestCzrejzyn: dsadsadTestMercurial: sadsadasdasTrip Calculator: This is a class trip calculator.UDP_Hole_Punching: ??UDP??User Group Labs: Group Meta Data: This module allows you to create and manage generic meta data for the social groups in DotNetNuke.

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• Oracle Develop Newbies

  - by Cassandra Clark

  tweetmeme_url = 'http://blogs.oracle.com/develop/2010/06/oracle_develop_newbies.html'; Share .FBConnectButton_Small{background-position:-5px -232px !important;border-left:1px solid #1A356E;} .FBConnectButton_Text{margin-left:12px !important ;padding:2px 3px 3px !important;} There are a number of us in the Oracle Technology Network team that came over from the Sun acquisition so we are true Oracle Develop "newbies."  We are boning up on Oracle history and thought it would be fun to test your knowledge too.  Below are a few Oracle history questions.  Post your answers in the comment section of the blog and if you answer all questions correctly you will be listed in the next post as an "Oracle Genius".  Feel free to turn the tables on your fellow blog readers by posting your own Oracle history questions.  If you stump the community we'll add your question to our next post as well.  Oracle History Quiz - In 2003, what Applications rival company did Oracle acquire?In which year was JDeveloper first released?In what language was Oracle v 1.0 written?What Oracle program is designed to recognize and reward members of the Oracle Technology and Applications communities for their contributions back to the Oracle community?What party event draws in nearly 4,000 attendees every year during Oracle OpenWorld, Oracle Develop and now JavaOne?See you in September! 

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• C#.NET (AForge) against Java (JavaCV, JMF) for video processing

  - by Leron

  I'm starting to get really confused looking deeper and deeper at video processing world and searching for optimal choices. This is the reason to post this and some other questions to try and navigate myself in the best possible way. I really like Java, working with Java, coding with Java, at the same time C# is not that different from Java and Visual Studio is maybe the best IDE I've been working with. So even though I really want to do my projects in Java so I can get better and better Java programmer at the same time I'm really attract to video processing and even though I'm still at the beginning of this journey I want to take the right path. So I'm really in doubt could Java be used in a production environment for serious video processing software. As the title says I already have been looking at maybe the two most used technologies for video processing in Java - JMF and JavaCV and I'm starting to think that even they are used and they provide some functionality, when it comes to real work and real project that's not the first thing that comes to once mind, I mean to someone that have a professional opinion about this. On the other hand I haven't got the time to investigate .NET (c# specificly) options but even AForge looks a lot more serious library then those provided for Java. So in general -either ways I'm gonna spend a lot of time learning some technology and trying to do something that make sense with it, but my plan is at the end the thing that I'll eventually come up to be my headline project. To represent my skills and eventually help me find a job in the field. So I really don't want to spend time learning something that will give me the programming result I want but at the same time is not something that is needed in the real world development. So what is your opinion, which language, technology is better for this specific issue. Which one worths more in terms that I specified above?

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• Adding Suggestions to the SharePoint 2010 Search Programatically

  - by Ricardo Peres

  There are numerous pages that show how to do this with PowerShell, but I found none on how to do it with plain old C#, so here it goes! To abbreviate, I wanted to have SharePoint suggest the site collection user’s names after the first letters are filled in a search site’s search box. Here’s how I did it: 1: //get the Search Service Application (replace with your own name) 2: SearchServiceApplication searchApp = farm.Services.GetValue<SearchQueryAndSiteSettingsService>().Applications.GetValue<SearchServiceApplication>("Search Service Application") as SearchServiceApplication; 3: 4: Ranking ranking = new Ranking(searchApp); 5:  6: //replace EN-US with your language of choice 7: LanguageResourcePhraseList suggestions = ranking.LanguageResources["EN-US"].QuerySuggestionsAlwaysSuggestList; 8:  9: foreach (SPUser user in rootWeb.Users) 10: { 11: suggestions.AddPhrase(user.Name, String.Empty); 12: } 13:  14: //get the job that processes suggestions and run it 15: SPJobDefinition job = SPFarm.Local.Services.OfType<SearchService>().SelectMany(x => x.JobDefinitions).Where(x => x.Name == "Prepare query suggestions").Single(); 16: job.RunNow(); You may do this, for example, on a feature. Of course, feel free to change users for something else, all suggestions are treated as pure text.

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• What do you think of this iterator syntax?

  - by ChaosPandion

  I've been working on an ECMAScript dialect for quite some time now and have reached a point where I am comfortable adding new language features. I would love to hear some thoughts and suggestions on the syntax. Example iterator Numbers { yield 1; yield 2; yield 3; if (true) { yield break; } yield continue iterator { yield 4; yield 5; yield 6; }; } Syntax IteratorDeclaration:     iterator  Identifier  {  IteratorBody  } IteratorExpression:     iterator  Identifieropt  {  IteratorBody  } IteratorBody:     IteratorStatementsopt IteratorStatements:     IteratorStatement IteratorStatementsopt IteratorStatement:     Statement but not one of BreakStatement ContinueStatement ReturnStatement     YieldStatement     YieldBreakStatement     YieldContinueStatement YieldStatement:     yield  Expression  ; YieldBreakStatement:     yield  break  ; YieldContinueStatement:     yield  continue  Expression  ;

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• Hide email adress with JavaScript

  - by Martin Aleksander

  I read somewhere that hiding email address behind JavaScript code, could reduce spam bots harvesting the email address. <script language="javascript" type="text/javascript"> var a = "Red"; var t = "no"; var doc = document; var b = "ITpro"; var ad = a; ad += "@"; ad += b; ad += "."; ad += t; var mt = "ma"; mt += "il"; mt += "to"; var text = ""; if (text == null || text.length == 0) text = ad; doc.write("<"+"a hr"+"ef=\""+mt+":"+ad+"\">"+text+"</"+"a>"); </script> This will not display the actual email-address in the sourcecode of the page, but it will display and work like a normal link for human users. Is it any point of doing this? Will it reduce spam bots, or is it just nonsense that might slow down performance of the page because of the JavaScript?

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• How should I unbind and delete OpenAL buffers?

  - by Joe Wreschnig

  I'm using OpenAL to play sounds. I'm trying to implement a fire-and-forget play function that takes a buffer ID and assigns it to a source from a pool I have previously allocated, and plays it. However, there is a problem with object lifetimes. In OpenGL, delete functions either automatically unbind things (e.g. textures), or automatically deletes the thing when it eventually is unbound (e.g. shaders) and so it's usually easy to manage deletion. However alDeleteBuffers instead simply fails with AL_INVALID_OPERATION if the buffer is still bound to a source. Is there an idiomatic way to "delete" OpenAL buffers that allows them to finish playing, and then automatically unbinds and really them? Do I need to tie buffer management more deeply into the source pool (e.g. deleting a buffer requires checking all the allocated sources also)? Similarly, is there an idiomatic way to unbind (but not delete) buffers when they are finished playing? It would be nice if, when I was looking for a free source, I only needed to see if a buffer was attached at all and not bother checking the source state. (I'm using C++, although approaches for C are also fine. Approaches assuming a GCd language and using finalizers are probably not applicable.)

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• Iphone/Android app – chatroom development – what framework & hosting needs?

  - by MikaelW

  I have some experience regarding IPhone and Android development but I am now struggling to solve a new class of problem: apps that involve a client/server chatroom feature. That is, an app when people can exchange text over the internet, and without having the app to constantly “pull” content from the server. So that problem can’t be solved with a normal php/mysql website, there must be some kind of application running on a server that is able to send message from the server to the phone, rather than having the phone to check for new messages every 10 seconds… So I’m looking for ways to solve the different problems here: What framework should I use on the two sides (phone / server)? It should be some kind of library that doesn’t prevent me to write paid apps. It should also be possible to have the same server for the Iphone and android version of the app. What server / hosting solution do I need with what sort of features, I just have no experience regarding server application that can handle and initiate multiple connections and are hosted on hardware that is always online I tried to find resources online but couldn’t so far, either the libraries had the wrong kind of license/language or I just didn’t understand… Sometimes there were nice tutorial but for different needs such as peer2peer chat over local network… Same with the server and the hosting problem, not sure where to start really, I’m calling for help and I promise I will complete this page with notes about the experience I will get :-) Obviously the ideal would be to find a tutorial I missed that include client code, server code and a free scalable server… That being said, If I see something as good, it probably means that I have eaten the wrong kind of mushroom again… So, failing that, any pointer which might help me toward that quest, would be greatly appreciated. Thanks in advance. Mikael

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• Grid-Based 2D Lighting Problems

  - by Lemoncreme

  I am aware this question has been asked before, but unfortunately I am new to the language, so the complicated explanations I've found do not help me in the least. I need a lighting engine for my game, and I've tried some procedural lighting systems. This method works the best: if (light[xx - 1, yy] > light[xx, yy]) light[xx, yy] = light[xx - 1, yy] - lightPass; if (light[xx, yy - 1] > light[xx, yy]) light[xx, yy] = light[xx, yy - 1] - lightPass; if (light[xx + 1, yy] > light[xx, yy]) light[xx, yy] = light[xx + 1, yy] - lightPass; if (light[xx, yy + 1] > light[xx, yy]) light[xx, yy] = light[xx, yy + 1] - lightPass; (Subtracts adjacent values by 'lightPass' variable if they are more bright) (It's in a for() loop) This is all fine and dandy except for a an obvious reason: The system favors whatever comes first in the for() loop This is what the above code looks like applied to my game: If I could get some help on creating a new procedural or otherwise lighting system I would really appreciate it!

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• ADF & ADF Mobile Bootcamps in UK, Austria, Spain, Switzerland

  - by JuergenKress

  You want to learn more about innovative features ADF and ADF mobile? You want to get answers how to build modern & mobile applications? Join our 2 days ADF & ADF mobile hands-on Bootcamp. UK Spain Switzerland Austria (one day class) Details Training Audience: Developers, Project Managers, Architects & ADF beginners Trainer: Mireille Duroussaud Language: English Cost: Free of charge, cancelation fee 50€ or no-show fee 2.000€ Note: Bootcamp is limited to 20 persons on first come first serve basis. Preparation:  Attend the free online training ADF 11g Presales Specialist. Follow-up  Pass the free online assessment ADF 11g Presales Specialist. Highlights of the Workshop Oracle Fusion Middleware Development Platform Developing Reusable Business Service Developing Rich Web User Interface and Portals Developing Mobile Apps for iOS and Android with Oracle ADF Mobile For details and registration please visit our registration page. WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. BlogTwitterLinkedInMixForumWiki Technorati Tags: adf,adf training,education,training,WebLogic,WebLogic Community,Oracle,OPN,Jürgen Kress

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• sublime text 2 review !

  - by Anirudha

  Few months ago I am looking for a editor to doing simply edit on html,css,javascript.  Before it I tried notepad++ which is quite awesome to do all works I want to get done with him.  I choose 2 editor on my list. first is sublime text and second is phpstorm. both are cross-plateform. I tried both and both is working fine. I finally go with sublime text 2.   Here is the reason why sublime text 2 is awesome. phpstorm and sublime text 2 both is licensed  software. In sublime text 2 you can use it for unlimited time when phpstorm is available for 30 days only. Sublime text 2 is very memory efficient and lightweight software this is first thing people found best in sublime text 2. in phpstorm problem for me is sometime it’s goes unresponsive when I tried html5 boilerplate. sublime text 2 is never hang depend on memory size of project compare to phpstorm. in Sublime text 2 you can got better speed at coding after learning some shortcut and basic thing applied specially sublime text 2. Sublime text 2 come with distraction free mode when phpstorm have nothing with full-screen. Sublime text 2 support almost every language. I have seen many people in community who has move from their PHP IDE to sublime text 2. You can use LESS and coffeescript in it. There are many kind of customization out in github regarding sublime text 2.   In past I also have also tried webmatrix. the latest version of webmatrix have nothing good as sublime text 2. Sublime text 2 is best fit for my requirement.   So cheers, people should tried once Sublime text 2 if they are look for a solid tool for learning new things. sublime text 2 can be downloaded from http://www.sublimetext.com/.   Thanks for reading my post.

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• A good tool for browser automation/client-side Web scripting

  - by hardmath

  I'm interested in adopting a tool/scripting language to automate some daily tasks connected with fighting forum spammers. A brief overview of these tasks: analyze new registrations and posts on a phpBB forum, and delete or deactivate spammers using a website/community that collects such spam reports. Typically such automation is integrated into the phpBB installation itself, which certainly has its advantages. My approach has the advantage of independent operation, etc. One way to think about this is in terms of browser automation. I've used iOpus iMacros for Firefox (the free version) in the past to respond to individual spammers, but current attacks are highly distributed. My "logic" for pigeonholing spammers vs. nonspammers seems beyond the easy reach of the free version of iMacros. From a more technical perspective one can think about dispensing with the browser altogether and programming GET/POST requests directed to my forum and other Web-based resources. I'm familiar with some scripting languages like Ruby and Lua, but I could be persuaded that a compiled application is better suited for these tasks. However in my experience the dynamic flexibility of interpreted environments is very useful in prototyping and debugging the application logic. So I'm leaning in the direction of scripting languages. Among browsers I favor Firefox and Chrome. I use both Windows and Linux platforms, and if the tool can adapt to an Android platform, it would make a neat demonstration of skills, yes? Thanks in advance for your suggestions!

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• SSIS Dashboard v0.4

  - by Davide Mauri

  Following the post on SSISDB script on Gist, I’ve been working on a HTML5 SSIS Dashboard, in order to have a nice looking, user friendly and, most of all, useful, SSIS Dashboard. Since this is a “spare-time” project, I’ve decided to develop it using Python since it’s THE data language (R aside), it’s a beautiful & powerful, well established and well documented and with a rich ecosystem around. Plus it has full support in Visual Studio, through the amazing Python Tools For Visual Studio plugin, I decided also to use Flask, a very good micro-framework to create websites, and use the SB Admin 2.0 Bootstrap admin template, since I’m all but a Web Designer. The result is here: https://github.com/yorek/ssis-dashboard and I can say I’m pretty satisfied with the work done so far (I’ve worked on it for probably less than 24 hours). Though there’s some features I’d like to add in t future (historical execution time, some charts, connection with AzureML to do prediction on expected execution times) it’s already usable. Of course I’ve tested it only on my development machine, so check twice before putting it in production but, give the fact that, virtually, there is not installation needed (you only need to install Python), and that all queries are based on standard SSISDB objects, I expect no big problems. If you want to test, contribute and/or give feedback please fell free to do it…I would really love to see this little project become a community project! Enjoy!

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• What are the pros and cons about developing under MAC OS? [closed]

  - by user827992

  Sometimes i get the chance to program under MAC OS, i knew about this OS since Apple shipped its computers with a PowerPC by Motorola ( since Panther, more or less ), these days they are all X86 and i see no particular advantages about adopting this platform, also i see only downsides for the main part, i do not want to cause flames, please reply if you have a good answer or you can contribute in some constructive way. I'm trying to write a list of the natively supported languages, or the languages that comes only under MAC OS with some particular technology, my list is this: Objective C with Cocoa/Carbon I'm not considering personal preferences here, if a person X likes to code under Xcode it's probably ok to have a MAC, if a person Y likes to code under Visual Studio it's probably ok to not having a MAC, my purpose is to clarify what MAC OS is good for. I also do not get why people glorify the MAC for historical reasons, I mean a language like Java just comes for MAC only in the 7th edition of its JDK, things like GCC are just a porting and many technologies are out of the question like C# ( I'm sorry, i do not consider MonoDevelop like a serious alternative ) , .Net, ASP, DirectX, and many others are just, again, porting or free software, like PHP, MySQL, Javascript, XML, CSS, OpenGL, etc etc. My question is: what is so special about being a programmer under MAC OS? There is something that I have not seen? I also noticed that a significant portion of MAC users end up using their MAC like a normal Windows PC with Parallels or something like that. I can afford to buy a MAC, show me why this machine is so unique.

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• How do you keep from running into the same problems over and over?

  - by Stephen Furlani

  I keep running into the same problems. The problem is irrelevant, but the fact that I keep running into is completely frustrating. The problem only happens once every, 3-6 months or so as I stub out a new iteration of the project. I keep a journal every time, but I spend at least a day or two each iteration trying to get the issue resolved. How do you guys keep from making the same mistakes over and over? I've tried a journal but it apparently doesn't work for me. [Edit] A few more details about the issue: Each time I make a new project to hold the files, I import a particular library. The library is a C++ library which imports glew.h and glx.h GLX redefines BOOL and that's not kosher since BOOL is a keyword for ObjC. I had a fix the last time I went through this. I #ifndef the header in the library to exclude GLEW and GLX and everything worked hunky-dory. This time, however, I do the same thing, use the same #ifndef block but now it throws a bunch of errors. I go back to the old project, and it works. New project no-worky. It seems like it does this every time, and my solution to it is new each time for some reason. I know #defines and #includes are one of the trickiest areas of C++ (and cross-language with Objective-C), but I had this working and now it's not.

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• How do I convince my team that a requirements specification is unnecessary if we adopt user-stories?

  - by Nupul

  We are planning to adopt user-stories to capture stakeholder 'intent' in a lightweight fashion rather than a heavy SRS (software requirements specifications). However, it seems that though they understand the value of stories, there is still a desire to 'convert' the stories into an SRS-like language with all the attributes, priorities, input, outputs, source, destination etc. User-stories 'eliminate' the need for a formal SRS like artifact to begin with so what's the point in having an SRS? How should I convince my team (who are all very qualified CS folks by the way - both by education and practice) that the SRS would be 'eliminated' if we adopted user-stories for capturing the functional requirements of the system? (NFRs etc can be captured too, but that's not the intent of the question). So here's my 'work-flow' argument: Capture initial requirements as user-stories and later elaborate them to use-cases (which are required to be documented at a low level i.e. describing interactions with the UI prototypes/mockups and are a deliverable post deployment). Thus going from user-stories to use-cases rather than user-stories to SRS to use-cases. How are you all currently capturing user-stories at your workplace (if at all) and how do you suggest I 'make a case' for absence of SRS in presence of user-stories?

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• Future of WPF and free controls ? [closed]

  - by Justin

  I am willing to work on a personal project that I would like to release publicly. I am working with Silverlight and have experience with XAML, as it is my full-time job. It is enjoyably for me to create UIs in Blend and XAML. I am also a big fan of C# language. I don't know what I would do without LINQ now. Anyways, I was looking at using WPF for my personal project. It seems that a lot of the controls out on the web are pay for items. The only place I have found to have a significant number of free controls is the WPF extended framework on codeplex. I want to make a financial application and need a powerful datagrid type of control that will allow me to enter transaction data. I haven't found such control for free in the net. It doesn't seem like there is much free community libraries/controls out there for Microsoft products. So, I was wondering if WPF would be the right way for me to go. I couldn't find any information on WPF usage in Windows 8, which coming very soon. I don't know Microsoft's plans for this technology. Would it be a better idea to use something different for the UI instead of WPF?

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