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• Perl - can't flush STDOUT or STDERR

  - by Jim Salter

  Perl 5.14 from stock Ubuntu Precise repos. Trying to write a simple wrapper to monitor progress on copying from one stream to another: use IO::Handle; while ($bufsize = read (SOURCE, $buffer, 1048576)) { STDERR->printflush ("Transferred $xferred of $sendsize bytes\n"); $xferred += $bufsize; print TARGET $buffer; } This does not perform as expected (writing a line each time the 1M buffer is read). I end up seeing the first line (with a blank value of $xferred), and then the 7th and 8th lines (on an 8MB transfer). Been pounding my brains out on this for hours - I've read the perldocs, I've read the classic "Suffering from Buffering" article, I've tried everything from select and $|++ to IO::Handle to binmode (STDERR, "::unix") to you name it. I've also tried flushing TARGET with each line using IO::Handle (TARGET-flush). No dice. Has anybody else ever encountered this? I don't have any ideas left. Sleeping one second "fixes" the problem, but obviously I don't want to sleep a second every time I read a buffer just so my progress will output on the screen! FWIW, the problem is exactly the same whether I'm outputting to STDERR or STDOUT.

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• Performance Overhead of Encrypted /home

  - by SabreWolfy

  I have a netbook with Windows on the second partition and Xubuntu (/ and /home) on the third partition. I selected to encrypt my home folder during installation. The performance of the netbook is adequate for the small machine that it is, but I'm looking to improve performance. I could not find much information about the overhead (CPU or drive) associated with home partition encryption. I ran the following, writing to my home partition as well as the the mounted Windows partition: dd if=/dev/zero of=~/dummy bs=512 count=10240 dd if=/dev/zero of=/media/Windows/dummy bs=512 count=10240 The first returned 2.4MB/s and the second returned 2.5MB/s. Can I therefore deduce that there is very little overhead to home folder encryption? I'm not sure if the different filesystems will make any difference (/ and /home are ext3). Update 1 I don't know why I didn't use /tmp instead of the mounted Windows folder. Only /home is encrypted, so /tmp is unencrypted ext3. The results of the dd as above are astounding: ~: 2.4 MB/s /tmp: 42.6 MB/s Comments please? The reason I am asking this is that disk access on the netbook is noticeably slow. Update 2 I timed each of the dd operations with time: ~: real 0m2.217s user 0m0.028s sys 0m2.176s /tmp: real 0m0.152s user 0m0.012s sys 0m0.136s See also: discussion on UbuntuForums.org and bug report Edit: Output of mount: /dev/sda3 on / type ext3 (rw,noatime,errors=remount-ro,user_xattr,commit=600) proc on /proc type proc (rw,noexec,nosuid,nodev) none on /sys type sysfs (rw,noexec,nosuid,nodev) fusectl on /sys/fs/fuse/connections type fusectl (rw) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) none on /dev type devtmpfs (rw,mode=0755) none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) none on /dev/shm type tmpfs (rw,nosuid,nodev) none on /var/run type tmpfs (rw,nosuid,mode=0755) none on /var/lock type tmpfs (rw,noexec,nosuid,nodev) binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev) gvfs-fuse-daemon on /home/USER/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=USER) `

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• Is using something other than XML advisable for my configuration file?

  - by Earlz

  I have a small tool I'm designing which would require a configuration file of some sort. The configuration file in my case is really more of a database, but it needs to be lightweight, and if needed the end-user should find it easily editable. However, it also will contain a lot of things in it. (depending on certain factors, could be 1Mb or more) I've decided I'd rather use plain ol' text, rather than trying to use SQLite or some such. However, with using text, I also have to deal with the variety of formats. So far, my options are XML JSON Custom format The data in my file is quite simple consisting for the most part of key-value type things. So, a custom format wouldn't be that difficult... but I'd rather not have to worry about writing the support for it. I've never seen JSON used for configuration files. And XML would bloat the file size substantially I think. (I also just has a dislike of XML in general). What should I do in this case? Factors to consider: This configuration file can be uploaded to a web service(so size matters) Users must be able to edit it by hand if necessary(ease of editing and reading matters) Must be able to generate and process automatically (speed doesn't matter a lot, but not excessively slow) The "keys" and "values" are plain strings, but must be escaped because they can contain anything. (unicode and escaping has to work easily)

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• How do I express subtle relationships in my data?

  - by Chuck H

  "A" is related to "B" and "C". How do I show that "B" and "C" might, by this context, be related as well? Example: Here are a few headlines about a recent Broadway play: 1 - David Mamet's Glengarry Glen Ross, Starring Al Pacino, Opens on Broadway 2 - Al Pacino in 'Glengarry Glen Ross': What did the critics think? 3 - Al Pacino earns lackluster reviews for Broadway turn 4 - Theater Review: Glengarry Glen Ross Is Selling Its Stars Hard 5 - Glengarry Glen Ross; Hey, Who Killed the Klieg Lights? Problem: Running a fuzzy-string match over these records will establish some relationships, but not others, even though a human reader could pick them out from context in much larger datasets. How do I find the relationship that suggests #3 is related to #4? Both of them can be easily connected to #1, but not to each other. Is there a (Googlable) name for this kind of data or structure? What kind of algorithm am I looking for? Goal: Given 1,000 headlines, a system that automatically suggests that these 5 items are all probably about the same thing. To be honest, it's been so long since I've programmed I'm at a loss how to properly articulate this problem. (I don't know what I don't know, if that makes sense). This is a personal project and I'm writing it in Python. Thanks in advance for any help, advice, and pointers!

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• How to promote code reuse and documentation?

  - by Graviton

  As a team lead of about 10+ developers, I would want to promote code reuse. We have written a lot of code-- a lot of them are repetitive over the past few years. The problem now is that a lot of these code are just duplicate of some other code or a slight variation of them. I have started the movement ( discussion) on how to make code into components so that they can be reused for the future projects, but the problem is that I afraid the new developers or other developers who are ignorant of the components will just go forward and write their own thing. Is there anyway to remind the developers to reuse the components/ improve the documentation/ contribute to the underlying component instead of duplicating the existing code and tweaking on it or just write their own? How to make the components easily discover-able, easily usable so that everyone will use it? Edit: I think every developer knows about the benefit of reusable components and wants to use them, it's just that we don't know how to make them discoverable. Also, the developers when they are writing code, they know they should write reusable code but lack of the motivation to do so.

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• Short Look at Frends Helium 2.0 Beta

  - by mipsen

  Pekka from Frends gave me the opportunity to have a look at the beta-version of their Helium 2.0. For all of you, who don't know the tool: Helium is a web-application that collects management-data from BizTalk which you usually have to tediously collect yourself, like performance-data (throttling, throughput (like completed Orchestrations/hour), other perfomance-counters) and data about the state of BTS-Applications and presents the data in clearly structured diagrams and overviews which (often) even allow drill-down.  Installing Helium 2 was quite easy. It comes as an msi-file which creates the web-application on IIS. Aditionally a windows-service is deployt which acts as an agent for sending alert-e-mails and collecting data. What I missed during installation was a link to the created web-app at the end, but the link can be found under Program Files/Frends... On the start-page Helium shows two sections: An overview about the BTS-Apps (Running?, suspended messages?) Basic perfomance-data You can drill-down into the BTS-Apps further, to see ReceiveLocations, Orchestrations and SendPorts. And then a very nice feature can be activated: You can set a monitor to each of the ports and/or orchestrations and have an e-mail sent when a threshold of executions/day or hour is not met. I think this is a great idea. The following screeshot shows the configuration of this option. Conclusion: Helium is a useful monitoring  tool for BTS-operations that might save a lot of time for collecting data, writing a tool yourself or documentation for the operations-staff where to find the data. Pros: Simple installation Most important data for BTS-operations in one place Monitor for alerts, if throughput is not met Nice Web-UI Reasonable price Cons: Additional Perormance-counters cannot be added Im am not sure when the final version is to be shipped, but you can see that on Frend's homepage soon, I guess... A trial version is available here

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• Turn off Windows Defender on your builds

  - by george_v_reilly

  I've spent some time this evening profiling a Python application on Windows, trying to find out why it was so much slower than on Mac or Linux. The application is an in-house build tool which reads a number of config files, then writes some output files. Using the RunSnakeRun Python profile viewer on Windows, two things immediately leapt out at me: we were running os.stat a lot and file.close was really expensive. A quick test convinced me that we were stat-ing the same files over and over. It was a combination of explicit checks and implicit code, like os.walk calling os.path.isdir. I wrote a little cache that memoizes the results, which brought the cost of the os.stats down from 1.5 seconds to 0.6. Figuring out why closing files was so expensive was harder. I was writing 77 files, totaling just over 1MB, and it was taking 3.5 seconds. It turned out that it wasn't the UTF-8 codec or newline translation. It was simply that closing those files took far longer than it should have. I decided to try a different profiler, hoping to learn more. I downloaded the Windows Performance Toolkit. I recorded a couple of traces of my application running, then I looked at them in the Windows Performance Analyzer, whereupon I saw that in each case, the CPU spike of my app was followed by a CPU spike in MsMpEng.exe. What's MsMpEng.exe? It's Microsoft's antimalware engine, at the heart of Windows Defender. I added my build tree to the list of excluded locations, and my runtime halved. The 3.5 seconds of file closing dropped to 60 milliseconds, a 98% reduction. The moral of this story is: don't let your virus checker run on your builds.

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• To write or not to write: Frameworks [closed]

  - by caarlos0

  Today some friends and I started discussing frameworks.. Some of us strongly believe that in 99.9% of cases, writing a new framework is a bad idea. We believe that probably some of the millions of frameworks out there should fit our problem, and if not, some hack, API, or configuration should be enough. If not, we think that contributing to some framework, suggest features or something like that should be the best solution. The 0.1% is when none of the frameworks fit to our case. But, some of us say that it is better to have an "internal corporate framework" (for example), because it's faster to fix issues, creates a 100% fit with the app, because of the "learning" factor (when you improve your skills building a framework), etc. I think that to go out coding frameworks like there's no tomorrow is not the right way. I've seen a lot of small teams building their own framework just to spread the word: "we built our own framework, we rule, bro". Generally, the framework is crap, without any documentation, and only works for their own applications. Opinions are opinions, devs are devs, without the intention to start any kind of flame war, I ask: What do you think about that? What parameters you consider when building a framework? What do you think about all this?

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• How to search for a tester?

  - by MainMa

  As a freelance developer, a few times I tried to find some testers to be able to let them test my software/web applications. If I try to find them, it's because most of the customers are not intended to hire external testers and don't see why this can benefit to them, so products are UI-untested and buggy. I tried lots of things. Discussion boards for IT people, specific websites for people who search for a job. Every time I clearly precise that I'm looking for product testers. I completely failed to find anybody for this job. I found instead two types of people: Non IT people who try to qualify as testers, but don't have enough skills for that, and don't really know what testing is and how to do it, Programmers, who are skilled as programmers, but not as testers, and who mostly don't understand neither what testing is about (or think it's the same thing as code review, or it consists in writing unit tests). Of course, they submit general programmers resumes, where they describe their high experience in Assembler and C++, but don't tell anything about anything related to the job of a tester. What I'm doing wrong? Isn't it called "tester"? Is there at least a tester job, different from general programming job? Is there any precise requirement to require from each candidate which can eliminate non IT people and general programmers?

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• CodePlex Daily Summary for Friday, September 14, 2012

  CodePlex Daily Summary for Friday, September 14, 2012Popular ReleasesSOAP Test Application (with EWS Tools): v0.60: Template modifications (to delete blank fields where they are not required). Bugfix for listener form where it wouldn't allow the program to be closed under certain conditions.BizTalk Zombie Management: BizTalkZombieManagement V0.1.0: First version Function supported : Listener on zombie event Dump the zombie message in folderTumblen3: tumblen3 Version14Sep2012: added 'proxy-getter' of tumblr's OAuth Access TokenIBR.StringResourceBuilder: V1.3 Release 2 Build 13: Fixed: "Making" a string resource left the table of string literals blank (due to "improvement" in Build 11). Improved: Sped up inserting resource call when "making" a string resource. from Build 12 New: Option to store all string resources in one resource file global to the project.Fruit Juice: Fruit Juice v1.0: First versionPDF Viewer Web part: PDF Viewer Web Part: PDF Viewer Web PartMicrosoft Ajax Minifier: Microsoft Ajax Minifier 4.67: Fix issue #18629 - incorrectly handling null characters in string literals and not throwing an error when outside string literals. update for Issue #18600 - forgot to make the ///#DEBUG= directive also set a known-global for the given debug namespace. removed the kill-switch for disregarding preprocessor define-comments (///#IF and the like) and created a separate CodeSettings.IgnorePreprocessorDefines property for those who really need to turn that off. Some people had been setting -kil...Active Forums for DotNetNuke CMS: Active Forums 05.00.00 RC3: Active Forums 05.00.00 RC3Lakana - WPF Framework: Lakana V2: Lakana V2 contains : - Lakana WPF Forms (with sample project) - Lakana WPF Navigation (with sample project)Microsoft SQL Server Product Samples: Database: OData QueryFeed workflow activity: The OData QueryFeed sample activity shows how to create a workflow activity that consumes an OData resource, and renders entity properties in a Microsoft Excel 2010 worksheet or Microsoft Word 2010 document. Using the sample QueryFeed activity, you can consume any OData resource. The sample activity uses LINQ to project OData metadata into activity designer expression items. By setting activity expressions, a fully qualified OData query string is constructed consisting of Resource, Filter, Or...Arduino for Visual Studio: Arduino 1.x for Visual Studio 2012, 2010 and 2008: Register for the visualmicro.com forum for more news and updates Version 1209.10 includes support for VS2012 and minor fixes for the Arduino debugger beta test team. Version 1208.19 is considered stable for visual studio 2010 and 2008. If you are upgrading from an older release of Visual Micro and encounter a problem then uninstall "Visual Micro for Arduino" using "Control Panel>Add and Remove Programs" and then run the install again. Key Features of 1209.10 Support for Visual Studio 2...Social Network Importer for NodeXL: SocialNetImporter(v.1.5): This new version includes: - Fixed the "resource limit" bug caused by Facebook - Bug fixes To use the new graph data provider, do the following: Unzip the Zip file into the "PlugIns" folder that can be found in the NodeXL installation folder (i.e "C:\Program Files\Social Media Research Foundation\NodeXL Excel Template\PlugIns") Open NodeXL template and you can access the new importer from the "Import" menuAcDown????? - AcDown Downloader Framework: AcDown????? v4.1: ??●AcDown??????????、??、??、???????。????，????，?????????????????????????。???????????Acfun、????(Bilibili)、??、??、YouTube、??、???、??????、SF????、????????????。 ●??????AcPlay?????，??????、????????????????。 ● AcDown??????????????????，????????????????????????????。 ● AcDown???????C#??，????.NET Framework 2.0??。?????"Acfun?????"。 ????32??64? Windows XP/Vista/7/8 ???? 32??64? ???Linux ????(1)????????Windows XP???,?????????.NET Framework 2.0???(x86)，?????"?????????"??? (2)???????????Linux???，????????Mono?? ??...Move Mouse: Move Mouse 2.5.2: FIXED - Minor fixes and improvements.MVC Controls Toolkit: Mvc Controls Toolkit 2.3: Added The new release is compatible with Mvc4 RTM. Support for handling Time Zones in dates. Specifically added helper methods to convert to UTC or local time all DateTimes contained in a model received by a controller, and helper methods to handle date only fileds. This together with a detailed documentation on how TimeZones are handled in all situations by the Asp.net Mvc framework, will contribute to mitigate the nightmare of dates and timezones. Multiple Templates, and more options to...DNN Metro7 style Skin package: Metro7 style Skin for DotNetNuke 06.02.00: Maintenance Release Changes on Metro7 06.02.00 Fixed width and height on the jQuery popup for the Editor. Navigation Provider changed to DDR menu Added menu files and scripts Changed skins to Doctype HTML Changed manifest to dnn6 manifest file Changed License to HTML view Fixed issue on Metro7/PinkTitle.ascx with double registering of the Actions Changed source folder structure and start folder, so the project works with the default DNN structure on developing Added VS 20...Xenta Framework - extensible enterprise n-tier application framework: Xenta Framework 1.9.0: Release Notes Imporved framework architecture Improved the framework security More import/export formats and operations New WebPortal application which includes forum, new, blog, catalog, etc. UIs Improved WebAdmin app. Reports, navigation and search Perfomance optimization Improve Xenta.Catalog domain More plugin interfaces and plugin implementations Refactoring Windows Azure support and much more... Package Guide Source Code - package contains the source code Binaries...Json.NET: Json.NET 4.5 Release 9: New feature - Added JsonValueConverter New feature - Set a property's DefaultValueHandling to Ignore when EmitDefaultValue from DataMemberAttribute is false Fix - Fixed DefaultValueHandling.Ignore not igoring default values of non-nullable properties Fix - Fixed DefaultValueHandling.Populate error with non-nullable properties Fix - Fixed error when writing JSON for a JProperty with no value Fix - Fixed error when calling ToList on empty JObjects and JArrays Fix - Fixed losing deci...DotNetNuke® Community Edition CMS: 07.00.00 CTP (Not for Production Use): NOTE: New Minimum Requirementshttp://www.dotnetnuke.com/Portals/25/Blog/Files/1/3418/Windows-Live-Writer-1426fd8a58ef_902C-MinimumVersionSupport_2.png Simplified InstallerThe first thing you will notice is that the installer has been updated. Not only have we updated the look and feel, but we also simplified the overall install process. You shouldn’t have to click through a series of screens in order to just get your website running. With the 7.0 installer we have taken an approach that a...WinRT XAML Toolkit: WinRT XAML Toolkit - 1.2.2: 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...New Projects$linq - A Javascript LINQ library: $linq is a Javascript version of .NET's Linq to Objects, with some query operations inspired by MoreLinq (an extension to Linq to Objects).AIlin: Some math operations with sparse and full matrices, elliptic curves and big numbersCapMvcHospital: Proyecto Hospital MVC para ABM de consultas clínicas y DoctoresChris on SharePoint Solutions: A collection of handy SharePoint solutions to make life easier for Site and Farm administrators.COTFACIL: O projeto visa estudar a integração web, mysql e visual studio 2010, para o estudo e conhecimento geral.Custom People Picker: The custom control which inherits the property of the "People Picker" control to display the items from the list.Data Sampler: The library allows the developer to quickly create dummy data or it can also be used to save a set of data that was originally retrieved from the database.DevelopEnvironment: ????????DotNetNuke Search Engine Sitemaps Provider: The iFinity DotNetNuke Search Engine Sitemaps Provider project generates Search Engine Sitemaps for DotNetNuke installs.Gapper Game: This is a recreation of the GAPPER DOS game that was released in 1986. The original has been abandon, so the Eastern Idaho .Net Users Group is remaking it.GestAdh45: Logiciel de gestion d'une association sportive : - gestion des adhérents/inscriptions - gestion des équipements (inventaire/vérifications)HP Printer Display Hack: A simple application that periodically checks the current price of a selected stock and sends it to the display of networked HP (and compatible) printers.INTELSI SAC: INICIOKnowledge Board Race: FATEC-SP - Engenharia de Software III KBR - Knowledge Board Race Desenvolvimento de um jogo educativo de tabuleiro on-line baseado em perguntas e respostas.MEDICALD PROJ: En este proyecto que lo haremos en equipo cada quien aportara su parte y luego la publicará aca.MVVM for Windows 8: Simple MVVM library for Windows 8.MyProjects: myprojectsNibbleOilWeb: Web Projectntcms: htcms system codingPowerConverter: PowerConverter allows you to change the old PE format to the new Power format for your PowerExtension programs.Primer Proyecto: dfrProject91404: pappapruebacodeplex: FooQuizz: D? án này là m?t ph?n c?a d? án t?t nghi?p. Vui lòng không s? d?ng vào m?c dích thuong m?i khi chua du?c s? d?ng ý c?a tác gi?.Runtime Dynamic Data Model Builder: Runtime Dynamic Data Model Builder lets you to have a Data Access Layer without writing code. It creates the database context and POCO based on Entity FrameworkSchoolProjectShitXD: Just a bunch of crap I am creating in my School,Scripture Reference Parser: Scripture Reference Parser is a library to parse data, including book, chapter, verse, and index, from references from various scriptures.Shadow: Shadow?????WCF??Remoting?ORM??，????????????????????。SharePoint Archive Tweets: Using REST, JSON and OAuth, SharePoint Archive Tweets (SPAT) was born. SPAT is a Microsoft SharePoint 2010 timer application that downloads Twitter timelines.Softech Portal - Vietnamese Portal: Gi?i pháp c?ng thông tin di?n t? thu?n Vi?t cho co quan hành chính Nhà Nu?c testdd09132012git01: sdtestdd09132012git02: ntestdd09132012hg01: dtestdd09132012tfs01: dteste tfs: testeTestRepository: Project Testing repository onlinetesttfs09132012tfs02: nThesis: This is my thesis project. It is about EDAs and Kernel classifiers. The source code is in Matlab.Tiny Contact Manager: Tiny Contact Manager manages collecting customer birthday and registration details and also sending out birthday vouchers.User Group Labs: My Groups: This is one of a series of social modules in the DotNetNuke User Group Labs project. This module allows you to easily lists the groups that a user is a part ofVatConnect: This is a Microsoft Flight Simulator add-on to connect it to the Vatsim network.Web Minesweeper with MVVM and Knockout: This is a common minesweeper game, that is implemented with mvvm in the web, only with html and javascipts libraries...Windows 8 - Using Roaming Storage in a Casual Game: This application demonstrates a simple game written for Windows 8 that illustrates how to utilize the Roaming Data Store for game data synchronization.xamlShow: This project is a demonstration of how to accomplish common tasks using WinRT XAML on Windows 8. This project is, basically, sample code used by Jerry Nixon.YTNet: YT Net is a small library which provides features for searching and downloading YouTube videos.

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• To my lola

  - by Erik Araojo

  Originally posted on: http://geekswithblogs.net/Erik/archive/2013/06/29/153290.aspx I've been staring at the computer for a few minutes now and I honestly don't know what to write.  First I thought of writing about myself, where I was born, where I studied, where I am now... but that seems shallow.  Now that I thought about it.  I'd rather not talk about who I am because it seems irrelevant right now.  What I really want to say is..I'm sad.  Been like this for quite some time now.Nobody knows I'm sad.I tried telling my wife but I guess she didn't think it was serious.  We were having a fight when I told her so she probably thought I was just making up an excuse for my behavior.  And besides, she's not the kind of person who'd put my interests before hers especially when she's got lots of things on her mind.I'm not sad every single day.  Some days I'm perfectly fine.  I actually have no idea when I'd feel sad.  It just happens. I'd wake up cheerful and then before I go to bed I already feel depressed.  I have no idea what triggers it.  On the bed, I'd turn my back to my wife, curl up into a fetal position and start sobbing silently. Awful.  Maybe you're wondering now what's the cause of all this.My grandma passed away and I haven't completely  come to terms with that fact.  I long to see her, talk to her and hold her... but I can't do that anymore because she's gone.  I will never be able to hear her voice and feel her touch again.  To make matters worse, the only person whom I wish would stay beside me whenever I'm feeling miserable and dejected is never around.  She's either working late or out with her friends.  Such is my life at the moment.  I doubt it will improve anytime soon.

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• DopeWarz 2010

  - by Theo Moore

  A few (6?) weeks ago, I started a project that I've always wanted to do. I am doing a re-write of the old VB6 game DopeWars with a partner in crime. I loved that game and spent many, many hours wasting time playing it years ago. I liked it so much, I even registered it (it was $5...even then, that wasn't much to spend). The VB6 version itself was a port of the old DOS game DrugWars (never go to play that). I needed a game project to work on as it's been far too long since I've done any game work. There is surprising amount of logic built into the game (there is the way I'm writing it, anyway) with what is really a minimal interface. My design goal was to have an object model that could be easily adapted to any interface and so far, I've managed to do that. I am even considering a web-based version that could run via Facebook (no clue how to do that...yet). I've enlisted the help of one of my DBA buddies to work on the interface while I am working on the object model. So far, this arrangement has gone well. The logical separation of concerns allows for us to collaborate easily. Once we get to the Facebook step, it will be great to have a DBA "on staff" to help that part off of the ground. The object model is probably about 60% complete with quite a bit of testing to go. More on this as we go....

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• Packing jar files into library jar files

  - by Hillel

  Firstly, this question is not about packing a simple jar file (e.g. lwjgl) into a runnable jar file. I know how to do this using JarSplice. So if I have a game which uses JInput, I will pack my game jar and jinput.jar using JarSplice and enter the natives in the process. The problem arises when I want to create a custom library that uses JInput, and then pack that into my games. See, the whole idea of writing a game library is that I don't ever have to even copy code like the wrapper I wrote for JInput Controller, and I always have a definitive version inside a library jar. Basically what I wanna do is create a jar file of my library, pack jinput.jar into it using JarSplice, possibly with the natives as well, and then when I want to export a jar of my game, I either export it automatically through Eclipse with the library jar, or, if that doesn't work, use JarSplice. I've tried several solutions, and nothing works. When I try to pack the game jar and the library jar using JarSplice, I get an error saying that there's either duplicate .project or .classpath. When I try to export my game through Eclipse with the library jar, it won't run (which is to be expected), but then, if I try to attach the natives with JarSplice, it doesn't give me any errors but the jar doesn't run. I'm not expecting anyone to solve this, but if anyone has an idea, something that will allow me to never look at the Gamepad code ever again, that would be awesome. I don't care if I have to package my library jar using JarSplice 5 times, and then do the same with the game jar, as long as it works. Otherwise I'll just have to copy the Gamepad class into every project alongside the library jar. :(

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• Working with data and meta data that are separated on different servers

  - by afuzzyllama

  While developing a product, I've come across a situation where my group wants to store meta data for data entry forms (questions, layout, etc) in a different database then the database where the collected data is stored. This is mostly for security because we want to be able to have our meta data public facing, while keeping collected data as secure as possible. I was thinking about writing a web service that provides the meta information that the data collection program could access. The only issue I see with this approach is the front end is going to have to match the meta data with the collected data, which would be more efficient as a join on the back end. Currently, this system is slated to run on .NET and MSSQL. I haven't played around with .NET libraries running in SQL, but I'm considering trying to create logic that would pull from the web service, convert the meta data into a table that SQL can join on, and return the combined data and meta data that way. Is this solution the wrong way to approach the problem? Is there a pattern or "industry standard" way of bringing together two datasets that don't live in the same database?

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• Windows 8&ndash;Custom WinRT components and WinJS

  - by Jonas Bush

  Wow, I’m still alive! I installed the RTM of Windows 8 when it became available, and in the last few days have started taking a look at writing a windows 8 app using HTML/JS, which in and of itself is a weird thing. I don’t think that windows developers of 10 years ago would’ve thought something like this would have ever come about. As I was working on this, I ran across a problem, found the solution, and thought I’d blog about it to try and kick start me back into blogging. I already answered my own question on Stack Overflow, but will explain here. I needed to create a custom WinRT component to do some stuff that I either wouldn’t be able to or didn’t know how to do with the javascript libraries available to me. I had a javascript class defined like this: WinJS.Namespace.define("MyApp", { MyClass: WinJS.Class.define(function() { //constructor function }, { /*instance members*/ }, { /*static members*/ }) }); This gives me an object I can access in javascript: var foo = new MyApp.MyClass(); I created my WinRT component like this: namespace MyApp { public sealed class SomeClass { public int SomeMethod() { return 42; } } }   With the thought that from my javascript, I’d be able to do this: var foo = new MyApp.MyClass(); var bar = new MyApp.SomeClass(); //from WinRT component foo.SomeProperty = bar.SomeMethod();   When I tried this, I got the following error when trying to construct MyApp.MyClass (the object defined in Javascript) 0x800a01bd - Javascript runtime error: Object doesn't support this action. I puzzled for a bit, then noticed while debugging that my “MyApp” namespace didn’t have anything in it other than the WinRT component. I changed my WinRT component to this: namespace MyAppUtils { public sealed class SomeClass { //etc } } And after this, everything was fine. So, lesson learned: If you’re using Javascript and create a custom WinRT component, make sure that the WinRT component is in a namespace all its own. Not sure why this happens, and if I find out why or if MS says something about this somewhere, I’ll come back and update this.

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• Is there any reason not to go directly from client-side Javascript to a database?

  - by Chris Smith

  So, let's say I'm going to build a Stack Exchange clone and I decide to use something like CouchDB as my backend store. If I use their built-in authentication and database-level authorization, is there any reason not to allow the client-side Javascript to write directly to the publicly available CouchDB server? Since this is basically a CRUD application and the business logic consists of "Only the author can edit their post" I don't see much of a need to have a layer between the client-side stuff and the database. I would simply use validation on the CouchDB side to make sure someone isn't putting in garbage data and make sure that permissions are set properly so that users can only read their own _user data. The rendering would be done client-side by something like AngularJS. In essence you could just have a CouchDB server and a bunch of "static" pages and you're good to go. You wouldn't need any kind of server-side processing, just something that could serve up the HTML pages. Opening my database up to the world seems wrong, but in this scenario I can't think of why as long as permissions are set properly. It goes against my instinct as a web developer, but I can't think of a good reason. So, why is this a bad idea? EDIT: Looks like there is a similar discussion here: Writing Web "server less" applications EDIT: Awesome discussion so far, and I appreciate everyone's feedback! I feel like I should add a few generic assumptions instead of calling out CouchDB and AngularJS specifically. So let's assume that: The database can authenticate users directly from its hidden store All database communication would happen over SSL Data validation can (but maybe shouldn't?) be handled by the database The only authorization we care about other than admin functions is someone only being allowed to edit their own post We're perfectly fine with everyone being able to read all data (EXCEPT user records which may contain password hashes) Administrative functions would be restricted by database authorization No one can add themselves to an administrator role The database is relatively easy to scale There is little to no true business logic; this is a basic CRUD app

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• Syntax Highlighting for Gherkin (Cucumber Language)

  - by Liam McLennan

  SyntaxHighlighter is the de facto standard for syntax highlighting on the web. I am currently working on a tool for publishing BDD specifications on the web and I want syntax highlighting. Unfortunately, SyntaxHighlighter does not support Gherkin, the language Cucumber and SpecFlow use to define BDD specifications. Writing new language parsers for SyntaxHighlighter is very easy, so I implemented one for Gherkin. Here is what a syntax highlighted Gherkin file looks like: # A comment here Feature: Some terse yet descriptive text of what is desired In order to realize a named business value As a explicit system actor I want to gain some beneficial outcome which furthers the goal @secretlabel Scenario: Some determinable business situation Given some precondition And some other precondition When some action by the actor And some other action And yet another action Then some testable outcome is achieved And something else we can check happens too Like all SyntaxHighlighter brushes to use this one you need to install the brush (shBrushGherkin.js). I have also used a custom theme to get it just the way I wanted it (shThemeGherkin.css). If you would like to use my Gherkin brush you may download the code and example page.

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• MEncoder Install on Ubuntu

  - by Tauqeer Ahmad

  I am writing this after checking almost all the posts but none of those solved my problem. I am trying to install mencoder to process some videos but there are strange errors coming. For examples when I try sudo apt-get install mencoder the following errors comes out: Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: mencoder : Depends: mplayer Depends: libasound2 (> 1.0.24.1) Depends: libavcodec53 (>= 4:0.8~beta2-2) but it is not installable or libavcodec-extra-53 (>= 4:0.8~beta2-2) but it is not going to be installed Depends: libavformat53 (>= 4:0.8~beta2-2) but it is not installable or libavformat-extra-53 (>= 4:0.8~beta2-2) but it is not going to be installed Depends: libcdparanoia0 (>= 3.10.2+debian) but it is not installable Depends: libenca0 (>= 1.9) but it is not installable Depends: libfontconfig1 (>= 2.8.0) but it is not installable Depends: libgif4 (>= 4.1.4) but it is not installable Depends: libjpeg8 (>= 8c) but it is not installable Depends: liblzo2-2 but it is not installable Depends: libsmbclient (>= 3.0.24) but it is not installable Depends: libspeex1 (>= 1.2~beta3-1) but it is not installable Depends: libtheora0 (>= 1.0) but it is not installable E: Unable to correct problems, you have held broken packages. Can anyone help to solve this issue. I tried to find static builds of MEncoder but could not.

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• Variable naming conventions?

  - by Ziv

  I've just started using ReSharper (for C#) and I kind of like its code smells finder, it shows me some things about my writing that I meant to fix a long time ago (mainly variable naming conventions). It caused me to reconsider some of my naming conventions for methods and instance variables. ReSharper suggests that instance variable be lower camel case and begin with an underscore. For a while I meant to make all my local variables lower camel case but is the underscore necessary? Do you find it comfortable? I don't like this convention but I also haven't tried it yet, what is you opinion of it? The second thing it prompted me to re-evaluate is my naming conventions for GUI event handlers. I usually use the VS standard of ControlName_Action and my controls usually use hungarian notation (as a suffix, to help clarify in code what is visible to the user and what isn't when dealing with similarly named variable) so I end up with OK_btn_Click(), what is your opinion of that? Should I succumb to the ReSharper convention or there are other equally valid options?

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• Learning Objective-C for iPad/iPhone/iPod Development

  - by Jeff Julian

  I am learning how to write apps for the iPad/iPhone/iPod!  Why, well several reasons.  One reason, I have 5 devices in my house on the platform.  I had an iPad and iPhone, Michelle has an iPhone, and each of the kids have iPod Touches.  They are excellent devices for life management, entertainment, and learning.  I am amazed at how well the kids pick up on it and how much it effects the way they learn.  My two year old knows how to use it better than any other device we own and she is learning new words and letters so quickly. Because of this saturation at home, it would be fun to write some apps my family could use.  Some games to bring the hobby of development back into my life.  Second reason is we want to have a Geekswithblogs app for the iPhone and iPad.  We are not sure if it is purely informational (blog posts and tweets) or if members want to be able to publish from the app.  Creating a blog editor would be tough stuff, but could be just the right challenge. There are so many more reasons, but the last one that really makes me excited is that it is a new domain of development where I get excited when I think about writing apps.  That excitement level where I want to see if there are User Groups and if we are just watching TV, to break out the MBP and start working on it.  That excitement level where I could really read a development book cover to cover and not just use as a reference.  I really do like this feeling. Who knows how long this will last and I am definitely not leaving .NET.  Microsoft software will always be my main focus, but for the time, my hobby is changing and I am getting excited about development again.   Technorati Tags: Apple,iPad Development,Objective-C,New Frontiers Image: Courtesy of Apple

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• Are programmers a bunch of heartless robots who are lacking of empathy? [closed]

  - by Graviton

  OK, the provocative title got your attention. My experience as a programmer and dealing with my fellow programmers is that, a programmer is also usually someone who is so consumed by his programming work, so absorbed in his algorithmic construction that he has little passion/ time left for anything else, which includes empathy for other people, love and care for the people whom he love or should love ( such as their spouses, parents, kids, colleagues etc). The better a person is in terms of his programming powers, the more defective he is in terms of love/care because both honing programming skills and loving the surrounding takes time and one has only so much time to be allocated among so many different things. Also, programming ( especially INTERESTING programming job, like, writing an AI to predict the future search trend) is a highly consuming job; it doesn't just consume you from 9 to 5, it will also consume you after 5 and practically every second of your waking hours because a good programmer can't just magically switch off his thinking hat after the office lights go off ( If you can then I don't really think you are a passionate programmer, and the prerequisite of a good programmer is passion). So, a good programmer is necessarily someone who can't love as much as others do because the very nature of the programming job prevents him from loving others as much as he wants to. Do you concur with my observation/ reasoning?

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• In Ubuntu 13.10, none of the hotkeys of LibreOffice works in non-English keyboard layout

  - by maqtanim

  In Ubuntu 13.10, the hotkeys/shortcut-keys (Ctrl+b, Ctrl+s etc) in LibreOffice are language dependent and work in English language only. While writing in any other language (i.e. any Cyrillic and/or any Bengali etc) it's impossible to use hotkeys, they just don't do anything. Switching to English input language enable hotkeys once again. This is very frustrating as user needs to switch language to save document, to make it bold, or italic, etc. This was not experienced in Ubuntu 13.04. Steps to reproduce: System Settings Text Entry. Add another keyboard layout beside English [In my case it is Bengali (Probhat)] Now launch Writer. Switch the keyboard layout from English (US) to Bengali (Probhat) by pressing Ctrl+Space. Press Ctrl+B to change font weight to bold. Error: Font weight does not get changed. Expected: Font weight should change to bold. Note: none other system hotkeys work as expected. I.e. Ctrl+s to save, or Ctrl+b to subscript, or Ctrl+i to italic etc. Workaround: The only way is to - change the keyboard layout to English then press desired hotkey then switch keyboard layout back to Bengali. The issue is critical, as it make writer very slow for keyboard-only typing.

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• Prevent Eclipse Java Builder from Compiling Java-Like Source

  - by redjamjar

  I'm in the process of writing an eclipse plugin for my programming language Whiley (see http://whiley.org). The plugin is working reasonably well, although there's lots to do. Two pieces of the jigsaw are: I've created a "Whiley Builder" by subclassing incremental project builder. This handles building and cleaning of "*.whiley" files. I've created a content-type called "Whiley Source Files" for "*.whiley" files, which extends "org.eclipse.jdt.core.javaSource" (this follows Andrew Eisenberg suggestion). The advantage of having the content-type extend javaSource is that it immediately fits into the package explorer, etc. In principle, I could fleshout ICompilationUnit to provide more useful info, although I haven't done that yet. The disadvantage is that the Java builder is trying to compile my whiley files ... and it obviously can't. Originally, I had the Java Builder run first, then the Whiley builder. Superficially, this actually worked out quite well since all of the errors from the Java Builder were discarded by the Whiley Builder (for whiley files). However, I actually want the Whiley Builder to run first, as this is the best way for me to resolve dependencies between Java and Whiley files. Which leads me to my question: can I stop the Java builder from trying to compile certain java-like resources? Specifically, in my case, those with the "*.whiley" extension. As an alternative, I was wondering whether my Whiley Builder could somehow update the resource delta to remove those files which it has dealt with. Thoughts?

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• Why doesn't Python have a "flatten" function for lists?

  - by Hubro

  Erlang and Ruby both come with functions for flattening arrays. It seems like such a simple and useful tool to add to a language. One could do this: >>> mess = [[1, [2]], 3, [[[4, 5]], 6]] >>> mess.flatten() [1, 2, 3, 4, 5, 6] Or even: >>> import itertools >>> mess = [[1, [2]], 3, [[[4, 5]], 6]] >>> list(itertools.flatten(mess)) [1, 2, 3, 4, 5, 6] Instead, in Python, one has to go through the trouble of writing a function for flattening arrays from scratch. This seems silly to me, flattening arrays is such a common thing to do. It's like having to write a custom function for concatenating two arrays. I have Googled this fruitlessly, so I'm asking here; is there a particular reason why a mature language like Python 3, which comes with a hundred thousand various batteries included, doesn't provide a simple method of flattening arrays? Has the idea of including such a function been discussed and rejected at some point?

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• Design for XML mapping scenarios between two different systems [on hold]

  - by deepak_prn

  Mapping XML fields between two systems is a mundane routine in integration scenarios. I am trying to make the design documents look better and provide clear understanding to the developers especially when we do not use XSLT or any other IDE such as jDeveloper or eclipse plugins. I want it to be a high level design but at the same time talk in developer's language. So that there is no requirements that slip under the crack. For example, one of the scenarios goes: the store cashier sells an item, the transaction data is sent to Data management system. Now, I am writing a functional design for the scenario which deals with mapping XML fields between our system and the data management system. Question : I was wondering if some one had to deal with mapping XML fields between two systems? (without XSLT being involved) and if you used a table to represent the fields mapping (example is below) or any other visualization tool which does not break the bank ? I am trying to find out if there is a better way to represent XML mapping in your design documents. The widely accepted and used method seems to be using a simple table such as in the picture to illustrate the mapping. I am wondering if there are alternate ways/ tools to represent such as in Altova:

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