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  • ArchBeat Link-o-Rama for 2012-09-06

    - by Bob Rhubart
    Oracle Technology Network Architect Day - Boston, MA - 9/12/2012 Sure, you could ask a voodoo priestess for help in improving your solution architecture skills. But there's the whole snake thing, and the zombie thing, and other complications. So why not keep it simple and register for Oracle Technology Network Architect Day in Boston, MA. There's no magic, just a full day of technical sessions covering Cloud, SOA, Engineered Systems, and more. Registration is free, but seating is limited. You'll curse yourself if you miss this one. Register now. Adding a runtime LOV for a taskflow parameter in WebCenter | Yannick Ongena Oracle ACE Yannick Ongena illustrates how to customize the parameters tab for a taskflow in WebCenter. Tips on Migrating from AquaLogic .NET Accelerator to WebCenter WSRP Producer for .NET | Scott Nelson "It has been a very winding path and this blog entry is intended to share both the lessons learned and relevant approaches that led to those learnings," says Scott Nelson. "Like most journeys of discovery, it was not a direct path, and there are notes to let you know when it is practical to skip a section if you are in a hurry to get from here to there." Using FMAP and AnalyticsRes in a Oracle BI High Availability Implementation | Christian Screen "The fmap syntax has been used for a long time in Oracle BI / Siebel Analytics when referencing images inherent in the application as well as custom images," says Oracle ACE Christian Screen. "This syntax is used on Analysis requests an dashboards." More on Embedded Business Intelligence | David Haimes David Haimes give an example of Timeliness as "one of the three key attributes required for BI to be considered embedded BI." Thought for the Day "Architect: Someone who knows the difference between that which could be done and that which should be done. " — Larry McVoy Source: Quotes for Software Engineers

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  • Jumpstart your MySQL Cluster Knowledge

    - by Antoinette O'Sullivan
    Join companies in the web, gaming, telecoms and mobile areas by learning about MySQL Cluster's distributed, shared-nothing, real-time design. The 3 days, MySQL Cluster course teaches you how to configure and manage the cluster nodes to ensure high availability. Learn how to install different nodes and understand cluster internals. Here is a sample of some events on the schedule for this course:  Location  Date  Delivery Language  Wien, Austria  4 February, 2013 German   Prague, Czech Republic  10 December, 2012 Czech   London, England  12 December, 2012 English   Hamburg, Germany  21 January, 2013  German  Stuttgart, Germany  26 March, 2013  German  Budapest, Hungary  4 December, 2012  Hungarian  Warsaw, Poland  10 December, 2012  Polish  Lisbon, Portugal  3 December, 2012 European Portugese   Barcelona, Spain  19 November, 2012 Spanish   Madrid, Spain  25 February, 2013 Spanish   Jakarta, Indonesia  21 January, 2013 English   Singapore  29 October, 2012 English   Chicago, United States  27 March, 2013  English  Reston, United States  6 February, 2013  English For more information on the authentic MySQL curriculum go to http://oracle.com/education/mysql

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  • Virtualization or Raw Metal?

    - by THE
    Normal 0 21 false false false DE X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-fareast-language:EN-US;} With the growing number of customers who want to run the Oracles EPM/BI (or other Fusion Middleware Software) in a virtualized environment, we face a growing number of people asking if running Oracle Software within VMware is supported or not. Two KM articles reflect Oracles policy towards the use of VMware: 249212.1 and 475484.1 . The bottom line is: “you may use it at your own risk, but Oracle does not recommend it”. So far we have seen few problems with the use of VMware (other than performance and the usual limitations) but Oracle does not certify its software for the use in VMware (and specifically for RAC Software actively refuses any support) and any issue that may occur will be fixed for the native OS only. It is on the customer to prove that the issue is NOT due to VMware in case that an issue is encountered. See: “Oracle Fusion Middleware Supported System Configurations page” And also “Supported Virtualization and Partitioning Technologies for Oracle Fusion Middleware”

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  • The best way to have a pointer to several methods - critique requested

    - by user827992
    I'm starting with a short introduction of what i know from the C language: a pointer is a type that stores an adress or a NULL the * operator reads the left value of the variable on its right and use this value as address and reads the value of the variable at that address the & operator generate a pointer to the variable on its right so i was thinking that in C++ the pointers can work this way too, but i was wrong, to generate a pointer to a static method i have to do this: #include <iostream> class Foo{ public: static void dummy(void){ std::cout << "I'm dummy" << std::endl; }; }; int main(){ void (*p)(); p = Foo::dummy; // step 1 p(); p = &(Foo::dummy); // step 2 p(); p = Foo; // step 3 p->dummy(); return(0); } now i have several questions: why step 1 works why step 2 works too, looks like a "pointer to pointer" for p to me, very different from step 1 why step 3 is the only one that doesn't work and is the only one that makes some sort of sense to me, honestly how can i write an array of pointers or a pointer to pointers structure to store methods ( static or non-static from real objects ) what is the best syntax and coding style for generating a pointer to a method?

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  • Are there any concrete examples of where a paralellizing compiler would provide a value-adding benefit?

    - 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? A good answer is one where there is a process where the computer runs at 100% CPU on a single core for a painful period of time. That time might be 10 seconds, if the task is meant to be quick. It might be 500ms if the task is meant to be interactive. It might be 10 hours. Please describe such a problem. Really, that's all I'm looking for: candidate areas for further investigation. (Hence, raytracing is off the list because all the low-hanging fruit have been feasted upon.) I am not interested in why it cannot be done. There are a million people willing to point to the sound reasons why it cannot be done. Such answers are not useful.

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  • Using Coherence API to get POF bytes

    - by Bruno.Borges
    Someone raised the question on how to use the Coherence API to get the bytes of an object in POF (Portable Object Format) programatically. So I came up with this small code that shows the very cool API simple usage :-)   SimplePofContext spc = new SimplePofContext();    spc.registerUserType(0, User.class, new UserSerializer());    // consider UserSerializer as an implementation of PofSerializer            User u = new User();    u.setId(21);    u.setName("Some Name");    u.setEmail("[email protected]");            ByteArrayOutputStream baos = new ByteArrayOutputStream();    DataOutput dataOutput = new DataOutputStream(baos);    BufferOutput bufferOutput = new WrapperBufferOutput(dataOutput);    spc.serialize(bufferOutput, u);            byte[] byteArray = baos.toByteArray();    System.out.println(Arrays.toString(byteArray));  Easy, isn't?

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  • ArchBeat Link-o-Rama for December 4, 2012

    - by Bob Rhubart
    Exalogic 2.0.1 Tea Break Snippets - Creating and using Distribution Groups | The Old Toxophilist "Although in many cases we, as Cloud Users, may not be to worried how the Virtualisation Algorithm decides where to place our vServers," says The Old Toxopholist, "there are cases where it is extremely important that vServers run on distinct physical compute nodes." There's plenty more on the subject in his blog post. Oracle Endeca (2.3) Record Level Security | Adam Seed Adam Sneed's blog post covers "the basics of security within Endeca Information Discovery, as these basic security objects are required in order to explain the implementation of record level security." ODI Handling DQ | Gurcan Orhan Oracle ACE Director Gurcan Orhan suggests you have fun with these scripts for Oracle Data Integrator. Parleys Testimonial at GlassFish Community Event - JavaOne 2012 Video of Parley's webmaster Stephan Janssen's presentation at the GlassFish Community Event at JavaOne 2012, in which he explains why Parley's moved from Tomcat to GlassFish. Java Spotlight Episode 109: Pete Muir on CDI 1.1 This edition of Roger Brinkley's Java Spotlight Podcast features an interview with CDI 1.1 spec lead Pete Muir of JBoss/Red Hat. Muir talks about the features in CDI 1.1 and what to expect in the future. Webcast: Java Management Extensions with Oracle WebLogic Server 12c Dr. Frank Munz and Dave Cabelus do the talking in this on-demand webcast focused on Oracle WebLogic Server 12c with Java Management Extensions (JMX). Using the Coherence API to get Portable Object Format bytes | Bruno Borges Bruno Borges shares a code snippet that illustrates how easy it is to use the Coherence API. Thought for the Day "Experience is something you don't get until just after you need it." — Anonymous Source: SoftwareQuotes.com

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  • What benefits can I get upgrading my ASP.NET (Webform) + DAL(EF) + Repository + BLL structure to MVC?

    - by Etienne
    I'm in the process of defining an approach that may best fit our needs for a big web application development. For now, I'm thinking going with an ASP.NET Architecture with a DAL using Entity Framework, a Repository concept to not access DAL directly from BLL and a BLL that call the repository and make every manipulations necessary to prepare data to push in a presentation layer (.aspx files). I don't plan to use ASP.Net controls and prefer to keep things simple and lightweight using plain html, jQuery UI controls and do most of the server calls with jQuery Ajax. Sometimes, when needed, I plan to use handlers (.ashx) to call BLL methods that will return JSON or HTML to client for dynamic stuff. My solution also has a test project that Mock the Repository with in-memory data to not repose on database for testing BLL methods... It may be usefull to add that we will build a big application over this architecture with hundreds of tables and store procedures with a lot of reading and writing to database. My question is, having this architecture in mind, Is there any evident advantages that I can obtain by using an MVC3 project instead of the described architecture base on Webform? Do you see any problem in this architecture that may cause us problem during the next steps of development? I know the MVC pattern for using it in others projects with Django... but the Microsoft MVC implementation look so much more complex and verbose than Django MVC and it's why I'm hesitating (or waiting for a little push?) right now before jumping into it... We are in a real project with deadlines and don't want to slow the development process without any real benefits.

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  • Collision Detection with SAT: False Collision for Diagonal Movement Towards Vertical Tile-Walls?

    - by Macks
    Edit: Problem solved! Big thanks to Jonathan who pointed me in the right direction. Sean describes the method I used in a different thread. Also big thanks to him! :) Here is how I solved my problem: If a collision is registered by my SAT-method, only fire the collision-event on my character if there are no neighbouring solid tiles in the direction of the returned minimum translation vector. I'm developing my first tile-based 2D-game with Javascript. To learn the basics, I decided to write my own "game engine". I have successfully implemented collision detection using the separating axis theorem, but I've run into a problem that I can't quite wrap my head around. If I press the [up] and [left] arrow-keys simultaneously, my character moves diagonally towards the upper left. If he hits a horizontal wall, he'll just keep moving in x-direction. The same goes for [up] and [left] as well as downward-diagonal movements, it works as intended: http://i.stack.imgur.com/aiZjI.png Diagonal movement works fine for horizontal walls, for both left and right-movement However: this does not work for vertical walls. Instead of keeping movement in y-direction, he'll just stop as soon as he "enters" a new tile on the y-axis. So for some reason SAT thinks my character is colliding vertically with tiles from vertical walls: http://i.stack.imgur.com/XBEKR.png My character stops because he thinks that he is colliding vertically with tiles from the wall on the right. This only occurs, when: Moving into top-right direction towards the right wall Moving into top-left direction towards the left wall Bottom-right and bottom-left movement work: the character keeps moving in y-direction as intended. Is this inherited from the way SAT works or is there a problem with my implementation? What can I do to solve my problem? Oh yeah, my character is displayed as a circle but he's actually a rectangular polygon for the collision detection. Thank you very much for your help.

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  • I want to be a programmer, work in corporate environment, earn well, learn fast and eventually become a great programmer [on hold]

    - by Shin San
    I'll try to keep this simple: I'm 29, been dabbling with computers for the past 10 years, had entry level jobs in tech support for different apps, been fixing computers for a while and now want to specialize in something. I'm not 100% stranger to programming but haven't gone past if/then/else with anything. A bit of JavaScript, PHP, Python and currently checking out the "SELECT" statement in SQL :)) I'm curious about programming, I enjoy it and I'm thinking of making a living out of it. So, while I'm at it, why not earn a bit more than the average Joe? So, that's why I'm checking what the best solution, the best learning path and the most useful languages are considering: a) how easy/fast can you find a job by knowing it b) how much would I be able to earn c) how fast can I learn it By reading 10-20 articles online I've come up with an example, but I'm here for some expert advice. Example: * ratings from a) and b) point of view #1 sql ; #2 java ; #3 html (please don't start the markup language debate) ; #4 javascript From this ratings, I'd say a good way to go is learn html/css/(javascript or php) for the web part of apps, some SQL/MySQL/whateverSQL for holding data and loads of Java for the program itself. Please let me know if this is a good idea and if so, what should be the order for learning all of the above. Else, please let me know a better way and why it would be better. Many thanks for taking the time to read my question. Best wishes to you guys Edit: if I think Java + SQL + HTML&JavaScript is the way to go, does the order I'm learning them in matter? Or can I try to learn them all at once?

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  • CodePlex Daily Summary for Sunday, June 17, 2012

    CodePlex Daily Summary for Sunday, June 17, 2012Popular ReleasesXDA ROM Hub: XDA ROM Hub v0.35 Beta: Download and install stock ROM -- Not all ROMS are online. Flash CWM On locked bootloader. Root. Unroot. Flash kernels. Flash system image Erase system. Erase boot. Erase Data and Cache. Install update.zip. Install ROM addons. Install Boot animations. Unlock bootloader. Please rate and reviewCodename 'Chrometro': Developer Preview: Welcome to the Codename 'Chrometro' Developer Preview! This is the very first public preview of the app. Please note that this is a highly primitive build and the app is not even half of what it is meant to be. The Developer Preview sports the following: 1) An easy to use application setup. 2) The Assistant which simplifies your task of customization. 3) The partially complete Metro UI. 4) A variety of settings 5) A partially complete web browsing experience To get started, download the Ins...Cosmos (C# Open Source Managed Operating System): Release 92560: Prerequisites Visual Studio 2010 - Any version including Express. Express users must also install Visual Studio 2010 Integrated Shell runtime VMWare - Cosmos can run on real hardware as well as other virtualization environments but our default debug setup is configured for VMWare. VMWare Player (Free). or Workstation VMWare VIX API 1.11AutoUpdaterdotNET : Autoupdate for VB.NET and C# Developer: AutoUpdater.NET 1.1: Release Notes *New feature added that allows user to select remind later interval.Sumzlib: API document: API documentMicrosoft SQL Server Product Samples: Database: AdventureWorks 2008 OLTP Script: Install AdventureWorks2008 OLTP database from script The AdventureWorks database can be created by running the instawdb.sql DDL script contained in the AdventureWorks 2008 OLTP Script.zip file. The instawdb.sql script depends on two path environment variables: SqlSamplesDatabasePath and SqlSamplesSourceDataPath. The SqlSamplesDatabasePath environment variable is set to the default Microsoft ® SQL Server 2008 path. You will need to change the SqlSamplesSourceDataPath environment variable to th...HigLabo: HigLabo_20120613: Bug fix HigLabo.Mail Decode header encoded by CP1252Jasc (just another script compressor): 1.3.1: Updated Ajax Minifier to 4.55.WipeTouch, a jQuery touch plugin: 1.2.0: Changes since 1.1.0: New: wipeMove event, triggered while moving the mouse/finger. New: added "source" to the result object. Bug fix: sometimes vertical wipe events would not trigger correctly. Bug fix: improved tapToClick handler. General code refactoring. Windows Phone 7 is not supported, yet! Its behaviour is completely broken and would require some special tricks to make it work. Maybe in the future...Phalanger - The PHP Language Compiler for the .NET Framework: 3.0.0.3026 (June 2012): Fixes: round( 0.0 ) local TimeZone name TimeZone search compiling multi-script-assemblies PhpString serialization DocDocument::loadHTMLFile() token_get_all() parse_url()BlackJumboDog: Ver5.6.4: 2012.06.13 Ver5.6.4  (1) Web???????、???POST??????????????????CRM 2011 ERD Designer: CRM 2011 ERD Designer: CRM 2011 ERD Designer BETA version is now availableBumblebee: Version 0.3.1: Changed default config values to decent ones. Restricted visibility of Hive.fs to internal. Added some XML documentation. Added Array.shuffle utility. The dll is also available on NuGet My apologies, the initial source code referenced was missing one file which prevented it from building The source code contains two examples, one in C#, one in F#, illustrating the usage of the framework on the Travelling Salesman Problem: Source CodeSharePoint XSL Templates: SPXSLT 0.0.9: Added new template FixAmpersands. Fixed the contents of the MultiSelectValueCheck.xsl file, which was missing the stylesheet wrapper.ExcelFileEditor: .CS File: nothingWeapsy - ASP.NET MVC CMS: 1.0.0 RC: - Upgrade to Entity Framework 4.3.1 - Added AutoMapper custom version (by nopCommerce Team) - Added missed model properties and localization resources of Plugin Definitions - Minor changes - Fixed some bugsXenta Framework - extensible enterprise n-tier application framework: Xenta Framework 1.8.0 Beta: Catalog and Publication reviews and ratings Store language packs in data base Improve reporting system Improve Import/Export system A lot of WebAdmin app UI improvements Initial implementation of the WebForum app DB indexes Improve and simplify architecture Less abstractions Modernize architecture Improve, simplify and unify API Simplify and improve testing A lot of new unit tests Codebase refactoring and ReSharpering Utilize Castle Windsor Utilize NHibernate ORM ...Microsoft Ajax Minifier: Microsoft Ajax Minifier 4.55: Properly handle IE extension to CSS3 grammar that allows for multiple parameters to functional pseudo-class selectors. add new switch -braces:(new|same) that affects where opening braces are placed in multi-line output. The default, "new" puts them on their own new line; "same" outputs them at the end of the previous line. add new optional values to the -inline switch: -inline:(force|noforce), which can be combined with the existing boolean value via comma-separators; value "force" (which...Microsoft Media Platform: Player Framework: MMP Player Framework 2.7 (Silverlight and WP7): Additional DownloadsSMFv2.7 Full Installer (MSI) - This will install everything you need in order to develop your own SMF player application, including the IIS Smooth Streaming Client. It only includes the assemblies. If you want the source code please follow the link above. Smooth Streaming Sample Player - This is a pre-built player that includes support for IIS Smooth Streaming. You can configure the player to playback your content by simplying editing a configuration file - no need to co...Liberty: v3.2.1.0 Release 10th June 2012: Change Log -Added -Liberty is now digitally signed! If the certificate on Liberty.exe is missing, invalid, or does not state that it was developed by "Xbox Chaos, Open Source Developer," your copy of Liberty may have been altered in some (possibly malicious) way. -Reach Mass biped max health and shield changer -Fixed -H3/ODST Fixed all of the glitches that users kept reporting (also reverted the changes made in 3.2.0.2) -Reach Made some tag names clearer and more consistent between m...New ProjectsAir Sanity: its a Project for a Microsoft ContestAsp.Net Settings Checking: Simple page for review all settings for web application ASP.Net 2.0. Ex: email setting, MS SQL setting,...ATH Commander: Projekt tworzony na zaliczenie przedmiotuCold Flame Youtube Library: .net library to download youtube videos, get youtube video titles and rip audio from a youtube videoComponentModelEx: This project add functionalities to handle the INotifyPropertyChanged interface. It also includes a bit of the MVVM pattern.CRUD Services: Provides a single generic CRUD service that can handle CRUD operations for any entity. Includes wrappers for supporting backend frameworks like Entity Framework and Linq-To-Sql, as well as for communication stacks like WCF and ASP.NET Web API.DotNetNuke Persian Packages: ???? ????? ? ???? ??? ?? ???? ???? 6.1.5 ???? ????? ??? ?? ???? - ??? ?? ?? ??FactureManger: With Facture manager you can easily create products, users, business partners and add them into Factures. This application can help to any business. GetSP2010ListIDs: This application is most useful while performing a manual deployment or backup/restore of SP2010 sites/lists/libraries from one environment to anotherKTOP Homeworks: ???????? ??????? ?? ?????Minecraft Italian Utility: Applicazione originariamente pubblicata su minecraftitalia.net, qui ci saranno le release e gli aggiornamenti My_first_Codeplex_project: My first Codeplex projectOAuth .NET Client: This project implements an OAuth client library in C# .NET.Painter: Hello! This is the help file for the Painter program. With this file you will be introduced into the futures of the program and the secrets of the program. PDN C++ AMP Effects: Paint.NET Gaussian blur effect written in C++ AMPThe East Wedding: This is a website for the East WeddingXDesigner.Writer: .XDesigner.Writer is a Document Editor like MS Word , Written in 100% C# code , without any the 3th part component , without RTF Text box , MS Word component or

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  • Java EE @ Devoxx UK

    - by delabassee
    Devoxx UK is taking place next week (12th and 13th June) in London. As with any Devoxx conference, this UK edition will have a nice mix of content, an impressive list of speakers and obviously Java EE will be well will covered too:  Apache TomEE, Java EE Web Profile and more on Tomcat (David Blevins) Myths, Tales and Voodoo - About Java EE and Testing (Adam Bien) 50 new features of Java EE 7 (Antonio Goncalves & Arun Gupta) Java EE 7 Hands-on Lab (Arun Gupta) In addition, there will be 2 BoF related to Java EE on Thursday evening, the first BoF will be about the Java EE platform and the second one will be about the Java EE Reference Implementation, i.e. GlassFish. I will participate in the Java EE Community BoF where will discuss Java EE general but with all recent activities, I suspect that a large portion of the BoF will spent on discussing the current plans for Java EE 8.  Right after and in the same room, I will join Steve Millidge of C2B2 for the GlassFish is here to stay! BoF. The goal is to discuss on GlassFish, the current status, the plans for the next release, how the community can contributes, etc. It should be mentioned that attending those BoFs is completely free, just make sure to register here.  So if you are in London next week, mind the Geek and see you at Devoxx UK!

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  • Get Started with JavaFX 2 and Scene Builder

    - by Janice J. Heiss
    Up on otn/java is a very useful article by Oracle Java/Middleware/Core Tech Engineer Mark Heckler, titled, “How to Get Started (FAST!) with JavaFX 2 and Scene Builder.”  Heckler, who has development experience in numerous environments, shows developers how to develop a JavaFX application using Scene Builder “in less time than it takes to drink a cup of coffee, while learning your way around in the process”. He begins with a warning and a reassurance: “JavaFX is a new paradigm and can seem a bit imposing when you first take a look at it. But remember, JavaFX is easy and fun. Let's give it a try.” Next, after showing readers how to download and install JDK/JavaFX and Scene Builder, he informs the reader that they will “create a simple JavaFX application, create and modify a window using Scene Builder, and successfully test it in under 15 minutes.” Then readers download some NetBeans files:“EasyJavaFX.java contains the main application class. We won't do anything with this class for our example, as its primary purpose in life is to load the window definition code contained in the FXML file and then show the main stage/scene. You'll keep the JavaFX terms straight with ease if you relate them to the theater: a platform holds a stage, which contains scenes. SampleController.java is our controller class that provides the ‘brains’ behind the graphical interface. If you open the SampleController, you'll see that it includes a property and a method tagged with @FXML. This tag enables the integration of the visual controls and elements you define using Scene Builder, which are stored in an FXML (FX Markup Language) file. Sample.fxml is the definition file for our sample window. You can right-click and Edit the filename in the tree to view the underlying FXML -- and you may need to do that if you change filenames or properties by hand - or you can double-click on it to open it (visually) in Scene Builder.” Then Scene Builder enters the picture and the task is soon done. Check out the article here.

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  • What technology or skillset should I learn today in order to be able to charge $250+ / hr in 2-3 years? [closed]

    - by Ryan Waggoner
    I've been doing PHP freelance development for the last 4-5 years and I'm starting to max out my hourly rate. So in 2010 I decided to transition to a new language. I played with Python and Ruby, but ended up settling on iOS, for three reasons: I'm enjoying the challenge of working on a completely different type of development, instead of another flavor of web development The demand seems higher right now than for Ruby or Python I see iOS developers charging $150 - 250 / hr Whether these reasons are right or wrong, I've been learning iOS for the last year and I'm starting to get more work in that field. I feel confident that in six months (barring any major shifts in the ecosystem), I can be billing iOS work at $150 / hr or more. However, I'm feeling that I should have done this earlier, that I've missed the boat, and that iOS development is going to dry up or get much more commoditized. Whether this is true or not isn't really my question (though feel free to comment). What I want to know is: what should I start learning right now so that I can be ahead of the curve in a couple years when the demand is far outstripping supply? What technologies or skillsets are going to be so heavily in demand in 2-3 years that you'll be able to charge $250 / hr or more and stay busy? These don't have to be new technologies either...the answer could be iOS or COBOL or whatever.

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  • Is there such thing as a "theory of system integration"?

    - by Jeff
    There is a plethora of different programs, servers, and in general technologies in use in organizations today. We, programmers, have lots of different tools at our disposal to help solve various different data, and communication challenges in an organization. Does anyone know if anyone has done an serious thinking about how systems are integrated? Let me give an example: Hypothetically, let's say I own a company that makes specialized suits a'la Iron Man. In the area of production, I have CAD tools, machining tools, payroll, project management, and asset management tools to name a few. I also have nice design space, where designers show off their designs on big displays, some touch, some traditional. Oh, and I also have one of these new fangled LEED Platinum buildings and it has number of different computer controlled systems, like smart window shutters that close when people are in the room, a HVAC system that adjusts depending on the number of people in the building, etc. What I want to know is if anyone has done any scientific work on trying to figure out how to hook all these pieces together, so that say my access control system is hooked to my payroll system, and my phone system allowing my never to swipe a time card, and to have my phone follow me throughout the building. This problem is also more than a technology challenge. Every technology implementation enables certain human behaviours, so the human must also be considered as a part of the system. Has anyone done any work in how effectively weave these components together? FYI: I am not trying to build a system. I want to know if anyone has thoroughly studied the process of doing a large integration project, how they develop their requirements, how they studied the human behaviors, etc.

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  • Remote Working & Relocation

    - by James Burgess
    Sorry if this question is a duplicate, I did some extensive searching and found nothing on quite the same topic (though a couple on partially-overlapping topics). Recently, whilst on holiday in Munich, Germany, I was taken aback by the sheer number of programming-related posts available in the city that I easily qualify for (both in terms of knowledge, and experience). The advertised working environments seemed good and the pay seemed to be at least as good as what I'd expect here in the UK. Probably 80% of the advertisements I saw on the underground were for IT-related jobs, and a good 60% of those I was easily qualified for. At the moment, I work as a freelancer mostly on web and small software projects, but seeing the vast availability of jobs in Munich versus my local area has me thinking about remote working. I'm unable to relocate for a job for the next 3 years (my wife has a contract to continue being a doctor at her current hospital for that time) but would almost certainly be open to it after that (after all, my wife and I both love Munich). In the meanwhile, I would be very interested in remote-working. So, my question is thus do companies ever take on remote workers (even with semi-frequent trips to the office) from abroad, with a view to later relocation? And, if so, how do you go about broaching the topic with a recruiter when getting in contact about a job posting? Language isn't a barrier for me, here, as 90% of the jobs I've looked up in Munich don't require German speakers (seems they have a big recruiting market abroad). I'm also under no illusions about the disadvantages of remote working, but I'm more interested in the viability of the scenario rather than the intricacies (at least at this point). I'd really appreciate any contributions, especially from those who have experience with working in such a scenario!

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  • An Interview with JavaOne Rock Star Martijn Verburg

    - by Janice J. Heiss
    An interview with JavaOne Rock Star Martijn Verburg, by yours truly, titled “Challenging the Diabolical Developer: A Conversation with JavaOne Rock Star Martijn Verburg,” is now up on otn/java. Verburg, one of the leading movers and shakers in the Java community, is well known for his ‘diabolical developer” talks at JavaOne where he uncovers some of the worst practices that Java developers are prone to. He mentions a few in the interview: * “A lack of communication: Software development is far more a social activity than a technical one; most projects fail because of communication issues and social dynamics, not because of a bad technical decision. Sadly, many developers never learn this lesson.* No source control: Some developers simply store code in local file systems and e-mail the code in order to integrate their changes; yes, this still happens.* Design-driven design: Some developers are inclined to cram every design pattern from the Gang of Four (GoF) book into their projects. Of course, by that stage, they've actually forgotten why they're building the software in the first place.” He points to a couple of core assumptions and confusions that lead to trouble: “One is that developers think that the JVM is a magic box that will clean up their memory and make their code run fast, as well as make them cups of coffee. The JVM does help in a lot of cases, but bad code can and will still lead to terrible results! The other trend is to try to force Java (the language) to do something it's not very good at, such as rapid Web development. So you get a proliferation of overly complex frameworks, libraries, and techniques trying to get around the fact that Java is a monolithic, statically typed, compiled, OO environment. It's not a Golden Hammer!” Verburg has many insightful things to say about how to keep a Java User Group (JUG) going, about the “Adopt a JSR” program, bugathons, and much more. Check out the article here.

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  • Is there ever a reason to do all an object's work in a constructor?

    - by Kane
    Let me preface this by saying this is not my code nor my coworkers' code. Years ago when our company was smaller, we had some projects we needed done that we did not have the capacity for, so they were outsourced. Now, I have nothing against outsourcing or contractors in general, but the codebase they produced is a mass of WTFs. That being said, it does (mostly) work, so I suppose it's in the top 10% of outsourced projects I've seen. As our company has grown, we've tried to take more of our development in house. This particular project landed in my lap so I've been going over it, cleaning it up, adding tests, etc etc. There's one pattern I see repeated a lot and it seems so mindblowingly awful that I wondered if maybe there is a reason and I just don't see it. The pattern is an object with no public methods or members, just a public constructor that does all the work of the object. For example, (the code is in Java, if that matters, but I hope this to be a more general question): public class Foo { private int bar; private String baz; public Foo(File f) { execute(f); } private void execute(File f) { // FTP the file to some hardcoded location, // or parse the file and commit to the database, or whatever } } If you're wondering, this type of code is often called in the following manner: for(File f : someListOfFiles) { new Foo(f); } Now, I was taught long ago that instantiated objects in a loop is generally a bad idea, and that constructors should do a minimum of work. Looking at this code it looks like it would be better to drop the constructor and make execute a public static method. I did ask the contractor why it was done this way, and the response I got was "We can change it if you want". Which was not really helpful. Anyway, is there ever a reason to do something like this, in any programming language, or is this just another submission to the Daily WTF?

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  • System testing - making sure the system conforms to specification. Validation?

    - by user970696
    After weeks of research I have nearly completed my thesis, yet I am unable to clear up my confusion contained in all previous threads here (and in many books): During system testing, we check the system function against system analysis (functional system design) - but that would fit to a definition of verification according to many books. But I follow ISO12207, which considers all testing as validation (making sure work product meets requirement for intended use). How can I justify that unit testing or system testing is validation, even though when I check it against specification? Which fullfils the definiton of verification? When testing that e.g. "Save button" works, is it validation? This picture shows my understanding of V&V, so different from many other sources, including ISTQB etc. Essential problem I have is that a book using the same picture also states on another place that: test activities in the area of validation are usability, alpha and beta testing. For verification, testable system requirements are defined whose correct implementation can be tested through system tests. Isn't that the opposite of what the picture says? Most books present the following picture, where validation is just making sure that customer needs are satisfied. Mind you that according to ISO, validation activity is testing.

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  • How to visualize the design of a program in order to communicate it to others

    - by Joris Meys
    I am (re-)designing some packages for R, and I am currently working out the necessary functions, objects, both internal and for the interface with the user. I have documented the individual functions and objects. So I have the description of all the little parts. Now I need to give an overview of how the parts fit together. The scheme of the motor so to say. I've started with making some flowchart-like graphs in Visio, but that quickly became a clumsy and useless collection of boxes, arrrows and-what-not. So hence the question: Is there specific software you can use for vizualizing the design of your program If so, care to share some tips on how to do this most efficiently If not, how do other designers create the scheme of their programs and communicate that to others? Edit: I am NOT asking how to explain complex processes to somebody, nor asking how to illustrate programming logic. I am asking how to communicate the design of a program/package, i.e.: the objects (with key features and representation if possible) the related functions (with arguments and function if possible) the interrelation between the functions at the interface and the internal functions (I'm talking about an extension package for a scripting language, keep that in mind) So something like this : But better. This is (part of) the interrelations between functions in the old package that I'm now redesigning for obvious reasons :-) PS : I made that graph myself, using code extraction tools on the source and feeding the interrelation matrix to yEd Graph Editor.

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  • Understanding Box2d Restitution & Bouncing

    - by layzrr
    I'm currently trying to implement basketball bouncing into my game using Box2d (jBox2d technically), but I'm a bit confused about restitution. While trying to create the ball in the testbed first, I've run into infinite bouncing, as described in this question, however obviously not using my own implementation. The Box2d manual describes restitution as follows: Restitution is used to make objects bounce. The restitution value is usually set to be between 0 and 1. Consider dropping a ball on a table. A value of zero means the ball won't bounce. This is called an inelastic collision. A value of one means the ball's velocity will be exactly reflected. This is called a perfectly elastic collision. My confusion lies in that I am still getting infinite bouncing with restitution values at 0.75/0.8. The same behavior can be seen in the testbed under Collision Watching - Varying Restitution, on the 6th and 7th balls. I believe the last one has restitution of 1, which makes sense, but I don't understand why the second to last ball bounces infinitely (as is happening with my working basketball I've created). I am looking to understand the restitution concept more fully, as well as look for a solution to infinite bouncing with the Box2d framework. My instinct was to sleep objects that appeared to be moving in very small increments, but this seems like a misuse of the engine. Should I just work with lower restitution values altogether?

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  • Advantage of Software Development [on hold]

    - by user93319
    The worth of a brand that a corporation carries is way too high than its physical presence. If you are venturing into an online business, you need to take special care about the corporate image of your business. Nowadays, it is very important for every organization to have its own website. To enhance the online presence of a company it is important to have a good website design as well as the blueprint of the design. A quality site can enhance organizational growth and it can lend a hand an in achieving company’s goals promptly. When websites have gained so much meaning, it is advisable for an organization to seek professional support for the construction of its own exclusive portals. Expert help may again is essential when one needs for a complete renovation on the Web. Any group is necessary to do a bit of introspection before it make a decision to look for the services of a professional web software development company. It is good to be completely clear-headed regarding one’s requirements. To start with, a business should be familiar with who its potential clientele are. Once this main factor has been give consideration, an association can go ahead and get its website designed accordingly. On approaching a corporation that offers software development services India to its customers, a client can make sure that their site is ready with all the most up-to-date features. Professional Assistance Matters Professional service supplier is identified to furnish a site with easy to use features that prompt visitors to come back again and again. Yet one more benefit of receiving aid from professionals is that they can let you know of the type of content that you should place on display over your site. For example, a business that wants to draw the interest of experts belong to the corporate world must make sure that the language used on its website is crisp and official.

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  • Complexity of defense AI

    - by Fredrik Johansson
    I have a non-released game, and currently it's only possible to play with another human being. As the game rules are made up by me, I think it would be great if new players could learn basic game play by playing against an AI opponent. I mean it's not like Tennis, where the majority knows at least the fundamental rules. On the other hand, I'm a bit concerned that this AI implementation can be quite complex. I hope you can help me with an complexity estimation. I've tried to summarize the gameplay below. Is this defense AI very hard to do? Basic Defense Game Play Player Defender can move within his land, i.e. inside a random, non-convex, polygon. This land will also contain obstacles modeled as polygons, that Defender has to move around. Player Attacker has also a land, modeled as another such polygon. Assume that Defender shall defend against Attacker. Attacker will then throw a thingy towards Defender's land. To be rewarded, Attacker wants to hit Defender's land, and Defender will want to strike away the thingy from his land before it stops to prevent Attacker from scoring. To feint Defender, Attacker might run around within his land before the throw, and based on these attacker movements Defender shall then continuously move to the best defense position within his land.

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  • QA - Developer communication

    - by exiter2000
    I am a developer and have worked at this company 4~5 years by now. We have been practicing scrum for about 2 years. I think, I have been worked well with QAs. I believe QAs/developers/technical writers are all one team. We are also actively hiring new team members. As a legacy member of the team, I have faced to assist new member(including developers and testers) with my business knowledge. We work on 2 weeks base scrum. I usually deliver my user story completely by the first date of second week and do some qa build with partial functionality of my user story so that QA has a good idea about my implementation and flow. Recently, I have met some QAs. In first week, the QAs do not talk... In stand up meeting, they say they are developing test cases regardless I deliver the user story or not. In second week, I do not have a single defect till Thursday afternoon and suddenly I have a major defect with several minor UI defect, which I delivered one week ago. Or I have one or two minor defects on second week however major defects on Thursday afternoon or Friday morning. This eventually make the story rolls over to the next sprint. Major defect takes time to fix and more importantly it would trigger the regression test for the story... Even if I worked Thursday evening and fixed it, the testing will not finish. And this happens multiple times with certain QAs. As a same team member, I talked to the QAs if they could test major defect with higher priority... Rejected... Because I do not understand QA process.. So I asked roughly how many major test cases are covered so far in the stand up meeting on 2nd week Wednesday.. The response is I should not ask this to the QA in the stand up meeting... What do I do?

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  • Automatic Generalization

    - by Nick Harrison
    I have been interested in functional programming since college. I played around a little with LISP back then, but I have not had an opportunity since then. Now that F# ships standard with VS 2010, I figured now is my chance. So, I was reading up on it a little over the weekend when I came across a very interesting topic. F# includes a concept called "Automatic Generalization". As I understand it, the compiler will look at your method and analyze how you are using parameters. It will automatically switch to a generic parameter if it is possible based on your usage. Wow! I am looking forward to playing with this. I have long been an advocate of using the most generic types possible especially when developing library classes. Use the highest level base class that you can get away with. Use an interface instead of a specific implementation. I don't advocate passing object around, but you get the idea. Tools like resharper, fxCop, and most static code analysis tools provide guidance to help you identify when a more generalized type is possible, but this is the first time I have heard about the compiler taking matters into its own hands. I like the sound of this. We'll see if it is a good idea or not. What are your thoughts? Am I missing the mark on what Automatic Generalization does in F#? How would this work in C#? Do you see any problems with this?

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