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• Profit at Oracle OpenWorld 2012

  - by user462779

  It's only a week away: Oracle OpenWorld descends on San Francisco from September 30 to October 4. It's always a frantic week for the Profit editorial staff, but here's a few thing we've got going in San Francisco that you'll want to watch out for: Profit on Oracle OpenWorld Live: The Oracle video team will be broadcasting live from the event all week. I have a few interesting on-air interviews booked, including a conversation with business/technology researcher Andrew Mcafee (Monday Oct 1 @ 11:45am), Acorn Paper CEO David Weissberg (Tuesday, Oct 2 @ 12:15pm) and Abhay Parasnis, Oracle Senior Vice President, Oracle Public Cloud (Wednesday, Oct 3, @ 10:45am). Profit in the Oracle Partner Network Lounge: This summer, I worked with the amazing Oracle Partner Network (OPN) team to create the Profit Oracle Specialized Partner Edition 2012. It's a great catalog of Oracle partner success stories and insight into the OPN strategy from its leadership. Look for the special issue of Profit in the Oracle PartnerNetwork Lounge: the place where partners can meet formally or informally with colleagues, customers, prospects, and other industry professionals. Moscone South, Exhibit Hall, Room 100 Oracle Customer Experience Summit @ OpenWorld: There's been a lot of discussion within my editorial team (and content published, as well)about Customer Experience. To keep pace with this evolving subject, I'll be attending this special embedded conference on Wednesday and Thursday (Oct. 3-4). Especially looking forward to Seth Godin's presentation: he was one of the first experts we interviewed forProfit Online five years ago. The Executive Edge @ OpenWorld: Of course, my Oracle OpenWorld is mostly filled with meetings/interviews with Oracle customers about completed Oracle projects and the strategic impact of enterprise IT on business. The ideal place for these conversations is The Executive Edge @ OpenWorld embedded conference. Samovar Tea Lounge at Moscone Center: I spend my down time on the roof of Moscone North, preparing for meetings or having impromptu conversations with attendees at this little oasis overlooking Yerba Buena Gardens. Fee free to drop my for a chat! See you in San Francisco! -Aaron Lazenby

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• ASP.NET MVC Cookbook &ndash; public review

  - by Andrew Siemer - www.andrewsiemer.com

  I have recently started writing another book.  The topic of this book is ASP.NET MVC.  This book differs from my previous book in that rather than working towards building one project from end to end – this book will demonstrate specific topics from end to end.  It is a recipe book (hence the cookbook name) and will be part of the Packt Publishing cookbook series.  An example recipe in this book might be how to consume JSON, creating a master /details page, jquery modal popups, custom ActionResults, etc.  Basically anything recipe oriented around the topic of ASP.NET MVC might be acceptable.  If you are interested in helping out with the review process you can join the “ASP.NET MVC 2 Cookbook-review” group on Google here: http://groups.google.com/group/aspnet-mvc-2-cookbook-review Currently the suggested TOC for the project is listed.  Also, chapters 1, 2, and most of 8 are posted.  Chapter 5 should be available tonight or tomorrow. In addition to reporting any errors that you might find (much appreciated), I am very interested in hearing about recipes that you want included, expanded, or removed (as being redundant or overly simple).  Any input is appreciated!  Hearing user feedback after the book is complete is a little late in my opinion (unless it is positive feedback of course). Thank you!

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• Supporting copy 'n paste in your Windows Phone app

  - by Daniel Moth

  Some Windows Phone 7 owners already have the NoDo update, and others are getting it soon. This update brings, among other things, copy & paste support for text boxes. The user taps on a piece of text (and can drag in either direction to select more/less words), a popup icon appears that when tapped copies the text to the clipboard, and then at any app that shows the soft input panel there is an icon option to paste the copied text into the associated textbox. For more read this 'how to'. Note that there is no programmatic access to the clipboard, only the end user experience I just summarized, so there is nothing you need to do for your app's textboxes to support copy & paste: it just works. The only issue may be if in your app you use static TextBlock controls, for which the copy support will not appear, of course. That was the case with my Translator by Moth app where the translated text appears in a TextBlock. So, I wanted the user to be able to copy directly from the translated text (without offering an editable TextBox for an area where user input does not make sense). Take a look at a screenshot of my app before I made any changes to it. I then made changes to it preserving the look and feel, yet with additional copy support (see screenshot on the right)! So how did I achieve that? Simply by using my co-author's template (thanks Peter!): Copyable TextBlock for Windows Phone.   (aside: in my app even without this change there is a workaround, the user could use the "swap" feature to swap the source and target, so they can copy from the text box) Comments about this post welcome at the original blog.

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• Are there any "best practices" on cross-device development?

  - by vstrien

  Developing for smartphones in the way the industry is currently doing is relatively new. Of course, there has been enterprise-level mobile development for several decades. The platforms have changed, however. Think of: from stylus-input to touch-input (different screen res, different control layout etc.) new ways of handling multi-tasking on mobile platforms (e.g. WP7's "tombstoning") The way these platforms work aren't totally new (iPhone has been around for quite awhile now for example), but at the moment when developing a functionally equal application for both desktop and smartphone it comes down to developing two applications from ground up. Especially with the birth of Windows Phone with the .NET-platform on board and using Silverlight as UI-language, it's becoming appealing to promote the re-use of (parts of the UI). Still, it's fairly obvious that the needs of an application on a smartphone (or tablet) are very different compared to the needs of a desktop application. An (almost) one-on-one conversion will therefore be impossible. My question: are there "best practices", pitfalls etc. documented about developing "cross-device" applications (for example, developing an app for both the desktop and the smartphone/tablet)? I've been looking at weblogs, scientific papers and more for a week or so, but what I've found so far is only about "migratory interfaces".

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• Give Us Your Thoughts About Oracle Designs

  - by Tom Caldecott-Oracle

  Participate in the Onsite Usability Lab at Oracle OpenWorld 2014 Want to impress your colleagues? Your manager? Your mom? Imagine being able to say to them, “So, did I ever tell you about the time I helped Oracle design some of their hot applications?” Yes, that opportunity is coming up—at Oracle OpenWorld.  The Oracle Applications User Experience team will host an onsite usability lab at the 2014 conference. You can participate and give us your thoughts about proposed designs for Oracle Human Capital Management Cloud and Oracle Sales Cloud, Oracle Fusion Applications for procurement and supply chain, Oracle E-Business Suite and PeopleSoft applications, social relationship management, BI applications, Oracle Fusion Middleware, and more.  Your feedback will directly affect the usability of Oracle applications to make them intuitive, easy to use. You’ll make a difference. And that should score you points with peers, friends, and family. Of course, for your mom, first you’ll probably have to explain to her again what you do for a living. If you’re interested in participating, you must sign up in advance. Space is limited. Participation requires your company or organization to have a Customer Participation Confidentiality Agreement (CPCA) on file. Don’t have one? Let us know, and we’ll start the process. Sign up now for the onsite usability lab. When?  Monday, September 29 - Wednesday, October 1, 2014  Where?  InterContinental San Francisco Want to know about other Oracle Applications User Experience activities at Oracle OpenWorld? Visit UsableApps.

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• Today I talk about you

  - by BuckWoody

  Some time back I posted a blog entry (mirrored here and here) asking you how you design databases. Out of those responses, my own experience, studies I read, and interviews I conducted, I collected a wealth of data. Thanks for your responses. So what am I going to do with that information? Well, all along I had planned for that to be used today. I am giving a presentation at an event called “TechReady” called “How Your Customers Design Databases”. This is a Microsoft-internal event, where technical professionals like myself, salespeople, and the product team get together to talk about what has been working, what doesn’t, what is coming and hopefully (fingers crossed here) what the product team can do to help us help the SQL Server community. I’ve mentioned before that I teach database design as part of a course I run at the University of Washington. I’m also planning to give a mini-lecture from that series at TechEd 2010, so if you’re coming stop by. I’d love to meet you. So today I talk about you – thanks for the input. I hope you and I can make a difference in the product. Might take a while, but it’s nice to know your voice is being heard. Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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• Rhino Mocks, AssertWasCalled with Arg Constraint on array parameter

  - by Etienne Giust

  Today, I had a hard time unit testing a function to make sure a Method with some array parameters was called. Method to be called : void AddUsersToRoles(string[] usernames, string[] roleNames);   I had previously used Arg<T>.Matches on complex types in other unit tests, but for some reason I was unable to find out how to apply the same logic with an array of strings.   It is actually quite simple to do, T really is a string[], so we use Arg<string[]>. As for the Matching part, a ToList() allows us to leverage the lambda expression.   sut.PermissionServices.AssertWasCalled(                 l => l.AddUsersToRoles(                     Arg<string[]>.Matches(a => a.ToList().First() == UserId.ToString())                     ,Arg<string[]>.Matches(a => a.ToList().First() == expectedRole1 && a.ToList()[1] == expectedRole2)                     )                     );   Of course, iw we expect an array with 2 or more values, the math would be something like : a => a.ToList()[0] == value1 && a.ToList()[1] == value2    … etc.

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• How do you stay productive when dealing with extremely badly written code?

  - by gaearon

  I don't have much experience in working in software industry, being self-taught and having participated in open source before deciding to take a job. Now that I work for money, I also have to deal with some unpleasant stuff, which is normal of course. Recently I was assigned to add logging to a large SharePoint project which is written by some programmer who obviously was learning to code on the job. After 2 years of collaboration, the client switched to our company, but the damage was done, and now somehow I need to maintain this code. Not that the code was too hard to read. Despite problems - each project has one class with several copy-pasted methods, enormous if nestings, Systems Hungarian, undisposed connections — it's still readable. However, I found myself absolutely unproductive despite working on something as simple as adding logging. Basically, I just need to go through the code step by step and add some trace calls. However, the idiocy of the code is so annoying that I get tired within 10 minutes of starting. In the beginning, I used to add using constructs, reduce nesting by reversing if's, rename the variables to readable names—but the project is large, and eventually I gave up. I know this is not the task I should be doing, but at least reducing the mess gave me some kind of psychological reward so I could keep going. Now the trick stopped working, and I still have 60% of my work to do. I started having headaches after work, and I no longer get the feeling of satisfaction I used to get - which would usually allow me to code for 10 hours straight and still feel fresh. This is not just one big rant, for I really do have an actual question: Is there a way to stay productive and not to fight the windmills? Is there some kind of psychological trick to stay focused on the task, instead of thinking “How stupid is that?” each time I see another clever trick by the previous programmer? The problem with adding logging is that I actually have to understand what the code does, and doing so hurts my brain in an unpleasant fashion.

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• Should I start making connections even if I'm not ready for a job yet?

  - by James

  The first job is always the hardest to get and I'm not exception. I'm 23 years old and I have no college degree but planned on going to college this year if all goes well (CS of course). I'm self-studying java right now. I know most of the topics related to the language besides the more advanced topics and I'm beginning to look at open source projects. I would like to find a job (at least a part time job) after a year or two when I'll gain more experience and learn more about java technologies and other technologies that interest me. Finding a job will be a bit difficult because most of the people (or a lot of them at least) at my current age already have 2 years or more of experience, so I will be somewhat disadvantaged. Should I start building connections and joining websites such as linkedin ? I never bothered to look into it because I'm not much of a social network person. If I start contributing to open source projects and create personal projects for 2 years could I apply for jobs that require 1-2 years of experience? Does this experience count ?

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• PHP rand function (or not so rand)

  - by Badr Hari

  I was testing PHP rand function to write on a image. Of course the output shows that it's not so random. The code I used: <?php header('Content-Type: image/png'); $lenght = 512; $im = imagecreatetruecolor($lenght, $lenght); $blue = imagecolorallocate($im, 0, 255, 255); for ($y = 0; $y < $lenght; $y++) { for ($x = 0; $x < $lenght; $x++) { if (rand(0,1) == 0) { imagesetpixel($im, $x, $y, $blue); } } } imagepng($im); imagedestroy($im); ?> My question is, if I use image width/lenght (variable $lenght in this example) number like 512, 256 or 1024, it is very clear that it's not so random. When I change the variable to 513 for an example, it is so much harder for human eye to detect it. Why is that? What is so special about these numbers? 512: 513: Edit: I'm running xampp on Windows to test it.

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• Architecture Standards &ndash; BPMN vs. BPEL for Business Process Management

  - by pat.shepherd

  I get asked often which business process standard an organization should use; BPMN or BPEL?  As I explain to folks, they both have strengths.  Here is a great article that helps understand the benefits of both and where to use them.  The good news is that, with Oracle SOA Suite and BPM suite, you have the option and flexibility to use both in the same SCA model and runtime container.  Good stuff. Here is the great article that Mark Nelson wrote: The right tool for the right job BPEL and BPMN are both ‘languages’ or ‘notations’ for describing and executing business processes. Both are open standards. Most business process engines will support one or the other of these languages. Oracle however has chosen to support both and treat them as equals. This means that you have the freedom to choose which language to use on a process by process basis. And you can freely mix and match, even within a single composite. (A composite is the deployment unit in an SCA environment.) So why support both? Well it turns out that BPEL is really well suited to modeling some kinds of processes and BPMN is really well suited to modeling other kinds of processes. Of course there is a pretty significant overlap where either will do a great job What BPM adds to SOA Suite | RedStack

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• Search inside Xournal files (.xoj)

  - by Javad Sadeqzadeh

  I'm a big fan of Evernote, I use it regularly. However, it has a 60MB storage limit (although text files are not going to occupy much space, but the limitation concern still remains). Today, I installed Xournal, which has great features like annotating, nice background, free hand shapes and notes, save in PDF format, and many more. But the big problem is that as far as I've noticd, there is no intrinsic feature for seach inside the notes (created using Xournal with .xoj suffix). I used Catfish File Search application (which creates bash commands for full text search), but it couldn't help as well. Is there anyway to search inside a .xoj file at all? If so, it could be a suitable alternative to evernote, if you put your .xoj files on a cloud (which certainly offers you much more storage space than 60MB). If not, is there any other convenient app similar to Evernote, but with higher storage limit or without a limit? Somebody suggested Zim desktop wiki app, which looks great, but I'm nut sure if I could copy and paste everything there (a mixture of photos and tables and text with various formats and highlights), like what I do with Evernote. And a very useful tool I use is Evernote Web Clipper (browser extension). Of course, having a desktop client like Everpad is a plus, but not the absolute need. PS: I use pocket, so please do suggest that (it only preserve links (which might change over time) not the actual text). I also use google drive or docs, I don't like that for this purpose niether, it's too slow, doesn't have a browser extension and a desktop client. Thank you so much in advance.

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• I Blame SNMP!

  - by brendonpage

  Anyone who has been reading my blog would have noticed that I have deviated slightly from my original post plan! This post was meant to be on uploading files in Silverlight, so what happened you may ask? Well last weekend I had some friends over for a LAN and one of them brought a managed switch with, which he had just been purchased for work. He proceeded show me how cool it was, how he planned on improving his work network and how it can be monitored remotely via SNMP. After this explanation he started to google for a free SNMP graphing tool. After a few hours of hearing disgruntled mutterings from him I asked what was wrong, he proceeded to rant about how he couldn’t find any tools that suited his needs. It was at this point I though the most dangerous thing a programmer can ever think “I wonder how hard it would be to make one”, of course the answer at the time is always “It can’t be that hard”, and so started my journey into SNMP. I am still in the early stages of this journey so I don’t have to much to report yet, but once I have finished the first version of my SNMP graphing tool I will definitely be posting about it! For now if there are any of you who are interested in doing any SNMP development in C# I would recommend looking at the #Sharp project on CodePlex (http://sharpsnmplib.codeplex.com/), it is the SNMP library I have decided to use and thus far it works beautifully.

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• Is '@' Error Suppression a Valid Technique for Testing for an Optional Array Key?

  - by MikeSchinkel

  Rarst and I were debating offline about the use of the '@' error suppression operator in PHP, specifically for use to test for existence of "optional" array keys, i.e. array keys that are being used as a switch here a their lack of existence in the array is functionally equivalent to the array having the key with a value equaling false. Here is pseudo-code for this scenario: function do_something( $args = array() ) { if ( @$args['switch'] ) { // Do something with this switch } // continue on... } vs. this approach: function do_something( $args = array() ) { if ( ! empty( $args['switch'] ) && $args['switch'] ) { // Do something with this switch } // continue on... } Of course in most use-cases, suppressing errors would not be A Good Thing(tm). However in this use-case where an array is passed with an optional element, it seems to me that it is actually a very good technique but I could be wrong and would like to hear other's opinions on the subject before I make up my mind. I do know that there are alleged performance hits for using the former approach but I'd like to know how they compare with the alternative and if they performance hits really matter in real world scenarios? P.S. I decided to post this because, after debating this offline with Rarst, he asked a more general question here on Programmers but didn't actually give a detailed example of the specific use-case we were debating. And since I'm pretty sure he'll want to use the out-of-context answers on that other question as justification for why the above is "bad" I decided I needed to get opinions on this specific use-case.

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• What happened to the Journal of Game Development?

  - by Ricket

  The lengthy mission statement from its website states: The lack of game-specific research has prevented many in the academic community from embracing game development as a serious field of study. The Journal of Game Development (JOGD), however, provides a much-needed, peer-reviewed, medium of communication and the raison d'etre for serious academic research focused solely on game-related issues. The JOGD provides the vehicle for disseminating research and findings indigenous to the game development industry. It is an outlet for peer-reviewed research that will help validate the work and garner acceptance for the study of game development by the academic community. JOGD will serve both the game development industry and academic community by presenting leading-edge, original research, and theoretical underpinnings that detail the most recent findings in related academic disciplines, hardware, software, and technology that will directly affect the way games are conceived, developed, produced, and delivered. The Journal of Game Development was established in 2003. It's hard to find any information about the issues but at four issues per year, I estimate the last issue was distributed sometime in 2005 or 2006. It had a good editorial board of college professors and a founding editor from Ubisoft. The list of articles looks good. The price was reasonable. So what happened to it? Its website recently went down but you can see the last Archive.org version. The editor-in-chief is a professor at my school so I intend to ask him in person in a week or two, but I thought I'd see what you might be able to dig up about it first. Of course I will be sure to add an answer with his official word on the matter at that time.

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• Gödel, Escher, Bach - Gödel's string

  - by Brad Urani

  In the book Gödel, Escher, Bach: An Eternal Golden Braid by Douglas Hofstadter, the author gives us a representation of the precursor to Gödel's string (Gödel's string's uncle) as: ~Ea,a': (I don't have the book in front of me but I think that's right). All that remains to get Gödel's string is to plug the Gödel number for this string into the free variable a''. What I don't understand is how to get the Gödel number for the functions PROOF-PAIR and ARITHMOQUINE. I understand how to write these functions in a programming language like FlooP (from the book) and could even write them myself in C# or Java, but the scheme that Hofstadter defines for Gödel numbering only applies to TNT (which is just his own syntax for natural number theory) and I don't see any way to write a procedure in TNT since it doesn't have any loops, variable assignments etc. Am I missing the point? Perhaps Gödel's string is not something that can actually be printed, but rather a theoretical string that need not actually be defined? I thought it would be neat to write a computer program that actually prints Gödel's string, or Gödel's string encoded by Gödel numbering (yes, I realize it would have a gazillion digits) but it seems like doing so requires some kind of procedural language and a Gödel numbering system for that procedural language that isn't included in the book. Of course once you had that, you could write a program that plugs random numbers into variable "a" and run procedure PROOF-PAIR on it to test for theoromhood of Gödel's string. If you let it run for a trillion years you might find a derivation that proves Gödel's string.

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• Today's Links (6/17/2011)

  - by Bob Rhubart

  Call for Nominations: Oracle Eco-Enterprise Innovation Awards Is your organization using Oracle products to reduce your environmental footprint while reducing costs? If so, submit your nomination for Oracle's Eco-Enterprise Innovation award. These awards will be presented to select customers and their partners who are using any of Oracle's products to not only take an environmental lead, but also to reduce their costs and improve their business efficiencies by using green business practices. Beyond The Data Grid: Coherence, Normalization, Joins, and Linear Scalability | Ben Stopford Ben Stopford presents ODC, a highly distributed in-memory normalized NoSQL datastore designed for scalability, based on normalized data, Snowflake Schema, and Connected Replication pattern. Upgrading ALSB services to OSB | John Chin-a-Woeng John Chin-a-Woeng walks you through the upgrade from Aqualogic Service Bus (ALSB 3.0) to Oracle Service Bus (OSB 10.3). SOA & Middleware: Pinning tasks to a user in BPM 11g | Niall Commiskey Commiskey illustrates a scenario. JDeveloper 11gR2: New option Test WebService in WSDL editor | Lucas Jellema The "Test WebService" button in the WSDL Editor in JDeveloper 11gr2 is "just a little feature addition," says Oracle ACE Director Lucas Jellema. "But it can be quite useful all the same." Enterprise Business Intelligence 11g Seminar with Mark Rittman Oracle ACE Director Mark Rittman conducts a two-day course for Oracle University, in Dublin, IE, July 4-5, 2011. Data Integration Webcast Series Join Oracle experts for a series covering our data integration solutions. You’ll get invaluable information to help boost your data infrastructure so that you can accelerate your business.

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• How to Manage Technical Employees

  - by Ajarn Mark Caldwell

  In my current position as Software Engineering Manager I have been through a lot of ups and downs with staffing, ranging from laying-off everyone who was on my team as we went through the great economic downturn in 2007-2008, to numerous rounds of interviewing and hiring contractors, full-time employees, and converting some contractors to employee status.  I have not yet blogged much about my experiences, but I plan to do that more in the next few months.  But before I do that, let me point you to a great article that somebody else wrote on The Unspoken Truth About Managing Geeks that really hits the target.  If you are a non-technical person who manages technical employees, you definitely have to read that article.  And if you are a technical person who has been promoted into management, this article can really help you do your job and communicate up the line of command about your team.  When you move into management with all the new and different demands put on you, it is easy to forget how things work in the tech subculture, and to lose touch with your team.  This article will help you remember what’s going on behind the scenes and perhaps explain why people who used to get along great no longer are, or why things seem to have changed since your promotion. I have to give credit to Andy Leonard (blog | twitter) for helping me find that article.  I have been reading his series of ramble-rants on managing tech teams, and the above article is linked in the first rant in the series, entitled Goodwill, Negative and Positive.  I have read a handful of his entries in this series and so far I pretty much agree with everything he has said, so of course I would encourage you to read through that series, too.

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• What is the best way to restrict access to adult content on Ubuntu?

  - by Stephen Myall

  I bought my kids a PC and installed 12.04 (Unity) on it. The bottom line is, I want my children to use the computer unsupervised while I have confidence they cannot access anything inappropriate. What I have looked at: I was looking at Scrubit a tool which allows me configure my wifi router to block content and this solution would also protect my other PC and mobile devices. This may be overkill as I just want the solution to work on one PC. I also did some Google searches and came across the application called Nanny (it seems to look the part). My experience of OSS is that the best solutions frequently never appear first on a Google search list and in this case I need to trust the methods therefore my question is very specific. I want to leverage your knowledge and experience to understand “What is the best way to restrict adult content on 12.04 LTS” as this is important to me. It maybe a combination of things so please don't answer this question "try this or that", then give me some PPA unless you can share your experience of how good it is and of course if there are any contraints. Thanks in advance

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• Install gcc on Ubuntu 12.04 LTS

  - by Brian M. Hunt

  When I try to install gcc on Ubuntu 12.04 LTS Server with apt-get install gcc, I get the following error: The following packages have unmet dependencies: gcc : Depends: cpp (>= 4:4.6.1-2ubuntu5) but it is not going to be installed Depends: gcc-4.6 (>= 4.6.1-1) but it is not going to be installed Recommends: libc6-dev but it is not going to be installed or libc-dev When I delve deeper (i.e. try to apt-get install gcc-4.6), I get: gcc-4.6 : Depends: gcc-4.6-base (= 4.6.1-9ubuntu3) but 4.6.3-1ubuntu5 is to be installed Depends: cpp-4.6 (= 4.6.1-9ubuntu3) but it is not going to be installed Depends: libgomp1 (>= 4.6.1-9ubuntu3) but it is not going to be installed Depends: libquadmath0 (>= 4.6.1-9ubuntu3) but it is not going to be installed Recommends: libc6-dev (>= 2.13-0ubuntu6) but it is not going to be installed So when I try to install gcc-4.6=4.6.1-9ubuntu3 I get a list of 366 packages to remove (including e.g. apt). Which is craziness. This is an essentially vanilla installation of Ubuntu 12.04 LTS Server (i.e. I installed nginx, python-flup, python-yaml, rsync, python-pkg-resources, lsof, fontconfig, iptables, ufw, scons, and grc). It is very surprising to me that I cannot install gcc, so I am somewhat confused as to why attempting to install gcc fails. The only apparent fix would seem to be uninstalling 366 packages, many of which are central to the operation of Ubuntu. Something doesn't add up, and I would be very grateful for assistance. EDIT The above is with the latest packages of course, having used apt-get update; apt-get upgrade before attempting the above. Sorry, I should have mentioned that.

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• Which is the best free ide/plugin for struts2?

  - by shahensha

  Hello friends, I have just learnt struts 2 and now I have taken up a full fledged project in it. I learnt the basics of struts 2 in Netbeans with it's struts2 plugin. But I am not at all happy with it, as it is very basic and I end up doing most of the work. It is obviously better than plain-vanilla text editor, but still not at all near to what netbeans provides for springs and hibernate. I know because netbeans provides native support for springs and hibernate, it is meant to be better. I don't mind changing my IDE if i get better support for struts2! So my questions are Please list all the free IDEs where native support for struts2 is provided. And if possible please compare them. Please list all the plugins that are available for eclipse for struts2 development. I have heard there are better plugins in eclipse. Also, if there are better plugins in any other IDE (other than netbeans or eclipse of course), please list them giving links. Please give me some tips which I'll need before starting a full blown project in Struts2. I haven't worked on any project on Struts2. I have just finished reading Struts 2 in Action of Manning publications. Thanking you in advance! regards shahensha

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• Chrome "refusing to execute script"

  - by TestSubject528491

  In the head of my HTML page, I have: <script src="https://raw.github.com/cloudhead/less.js/master/dist/less-1.3.3.js"></script> When I load the page in my browser (Google Chrome v 27.0.1453.116) and enable the developer tools, it says Refused to execute script from 'https://raw.github.com/cloudhead/less.js/master/dist/less-1.3.3.js' because its MIME type ('text/plain') is not executable, and strict MIME type checking is enabled. Indeed, the script won't run. Why does Chrome think this is a plaintext file? It clearly has a js file extension. Since I'm using HTML5, I omitted the type attribute, so I thought that might be causing the problem. So I added type="text/javascript" to the <script> tag, and got the same result. I even tried type="application/javascript" and still, same error. Then I tried changing it to type="text/plain" just out of curiosity. The browser did not return an error, but of course the JavaScript did not run. Finally I thought the periods in the filename might be throwing the browser off. So in my HTML, I changed all the periods to the URL escape character %2E: <script src="https://raw.github.com/cloudhead/less%2Ejs/master/dist/less-1%2E3%2E3.js"></script> This still did not work. The only thing that truly works (i.e. the browser does not give an error and the JS successfully runs) is if I download the file, upload it to a local directory, and then change the src value to the local file. I'd rather not do this since I'm trying to save space on my own website. How do I get the Chrome to recognize that the linked file is actually a javascript type?

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• Animating DOM elements vs refreshing a single Canvas

  - by mgibsonbr

  A few years ago, when the HTML Canvas element was still kinda fresh, I wrote a small game in a rather "unusual" way: each game element had its own canvas, and frequently animated elements even had multiple canvases, one for each animation sprite. This way, the translation would be done by manipulating the DOM position of the canvases, while the sprite animation would consist of altering the visibility of the already drawn canvases. (z-indexes, of course, were the tricky part) It worked like a charm: even in IE6 with excanvas it showed a decent performance, and everything was rather consistent between browsers, including some smartphones. Now I'm thinking in writing a larger game engine in the same fashion, so I'm wondering whether it would be a good idea to do so in the current context (with all the advances in browsers and so on). I know I'm trading memory for time, so this needs to be customizable (even at runtime) for each machine the game will be running. But I believe using separate canvases would also help to avoid the game "freezing" on CPU spikes, since the translation would still happen even if the redraws lag for a while. Besides, the browsers' rendering engines are already optimized in may ways, so I'm guessing this scheme would also reduce the load on the CPU (in contrast to doing everything in JavaScript - specially the less optimized ones). It looks good in my head, but I'd like to hear the opinion of more experienced people before proceeding further. Is there any known drawback of doing this? I'm particulartly unexperienced in dealing with the GPU, so I wonder whether this "trick" would nullify any benefit of using a single, big canvas. Or maybe on modern devices it's overkill (though I'm skeptic about the claims that canvas+js - especially WebGL - will ever be a good alternative to native code). Any thoughts?

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• Challenge Accepted

  - by Chris Gardner

  Originally posted on: http://geekswithblogs.net/freestylecoding/archive/2014/05/20/challenge-accepted.aspxIt appears my good buddies in The Krewe have created The Krewe Summer Blogging Challenge. The challenge is to write at least two blog posts a week for 12 weeks over the summer. Consider this challenge accepted. So, what can we expect coming up? I still have the Kinect v2 Alpha kit. Some of you may have seen me use it in talks. I need to make some major API changes in The Krewe WP8 App. Plus, I may have Xamarin on board to help with getting the app to the other platforms. I am determined to learn F#, and I'm taking all of you with me. I am teaching a college course this summer. I want to post some commentary on that side of training. I am sure some biometric stuff will come up. Anything else you guys may want. I have created tasks on my schedule to get a new blog post up no later than every Tuesday and Friday. We'll see how that goes. Wish me luck.

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• Interfaces and Virtuals Everywhere????

  - by David V. Corbin

  First a disclaimer; this post is about micro-optimization of C# programs and does not apply to most common scenarios - but when it does, it is important to know. Many developers are in the habit of declaring member virtual to allow for future expansion or using interface based designs1. Few of these developers think about what the runtime performance impact of this decision is. A simple test will show that this decision can have a serious impact. For our purposes, we used a simple loop to time the execution of 1 billion calls to both non-virtual and virtual implementations of a method that took no parameters and had a void return type: Direct Call:     1.5uS Virtual Call:   13.0uS The overhead of the call increased by nearly an order of magnitude! Once again, it is important to realize that if the method does anything of significance then this ratio drops quite quickly. If the method does just 1mS of work, then the differential only accounts for a 1% decrease in performance. Additionally the method in question must be called thousands of times in order to produce a meaqsurable impact at the application level. Yet let us consider a situation such as the per-pixel processing of a graphics processing application. Here we may have a method which is called millions of times and even the slightest increase in overhead can have significant ramification. In this case using either explicit virtuals or interface based constructs is likely to be a mistake. In conclusion, good design principles should always be the driving force behind descisions such as these; but remember that these decisions do not come for free.   1) When a concrete class member implements an interface it does not need to be explicitly marked as virtual (unless, of course, it is to be overriden in a derived concerete class). Nevertheless, when accessed via the interface it behaves exactly as if it had been marked as virtual.

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