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• ARM TechCon 2013: Oracle Summary from Henrik Stahl

  - by hinkmond

  Henrik Stahl posted a good blog post summary of Oracle's involvement at last week's ARM TechCon 2013 in Santa Clara, Calif. Lots of new and interesting items to note from this year's conference. See: ARM TechCon 2013 Summary Here's a quote: If you have been following Java news, you are already aware of the fact that there has been a lot of investment in Java for ARM-based devices and servers over the last couple of years... Good stuff related to Java Embedded on ARM chips, but even better stuff coming soon... Stay tuned. Hinkmond

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• Customizing configuration with Dependency Injection

  - by mathieu

  I'm designing a small application infrastructure library, aiming to simplify development of ASP.NET MVC based applications. Main goal is to enforce convention over configuration. Hovewer, I still want to make some parts "configurable" by developpers. I'm leaning towards the following design: public interface IConfiguration { SomeType SomeValue; } // this one won't get registered in container protected class DefaultConfiguration : IConfiguration { public SomeType SomeValue { get { return SomeType.Default; } } } // declared inside 3rd party library, will get registered in container protected class CustomConfiguration : IConfiguration { public SomeType SomeValue { get { return SomeType.Custom; } } } And the "service" class : public class Service { private IConfiguration conf = new DefaultConfiguration(); // optional dependency, if found, will be set to CustomConfiguration by DI container public IConfiguration Conf { get { return conf; } set { conf = value; } } public void Configure() { DoSomethingWith( Conf ); } } There, the "configuration" part is clearly a dependency of the service class, but it this an "overuse" of DI ?

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• Hiring a swing developer - Need some tough assignments

  - by Jay

  I am trying to hire a java swing developer, who would most likely work on a java 1.4 based swing app. I have finalized 2-3 people and I would like to give them a one week assignment on Swing. It has to be a really tough one - something that they can't just copy from the internet and something that tests their in-depth knowledge on Swing. I can think of things like split screen windows, and custom UI controls that would involve custom paining. If you were to prepare such an assignment, what would you do? Please share your thoughts/experiences.

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• build command by concatenating string in bash

  - by Lennart Rolland

  I have a bash script that builds a command-line in a string based on some parameters before executing it in one go. The parts that are concatenated to the command string are supposed to be separated by pipes to facilitate a "streaming" of data through each component. A very simplified example: #!/bin/bash part1=gzip -c part2=some_other_command cmd="cat infile" if [ ! "$part1" = "" ] then cmd+=" | $part1" fi if [ ! "$part2" = "" ] then cmd+=" | $part2" fi cmd+="> outfile" #show command. It looks ok echo $cmd #run the command. fails with pipes $cmd For some reason the pipes don't seem to work. When I run this script i get different error messages relating usually to the first part of the command (before the first pipe). So my question is whether or not it is possible to build a command in this way, and what is the best way to do it?

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• SQL Azure Data Sync

  - by kaleidoscope

  The Microsoft Sync Framework Power Pack for SQL Azure contains a series of components that improve the experience of synchronizing with SQL Azure. This includes runtime components that optimize performance and simplify the process of synchronizing with the cloud. SQL Azure Data Sync allows developers and DBA's to: · Link existing on-premises data stores to SQL Azure. · Create new applications in Windows Azure without abandoning existing on-premises applications. · Extend on-premises data to remote offices, retail stores and mobile workers via the cloud. · Take Windows Azure and SQL Azure based web application offline to provide an “Outlook like” cached-mode experience. The Microsoft Sync Framework Power Pack for SQL Azure is comprised of the following: · SqlAzureSyncProvider · Sql Azure Offline Visual Studio Plug-In · SQL Azure Data Sync Tool for SQL Server · New SQL Azure Events Automated Provisioning Geeta

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• SQLMidlands & SQLLunch

  - by Dave Ballantyne

  Many thanks to all those that turned out to see my presentation on Thursday (16th of Feb) of “Cursors are Evil” at SQLMidlands.  The scripts i used are here : https://skydrive.live.com/?cid=4004b6a3bc887e2c&id=4004B6A3BC887E2C%21216 You will need the AdventureWorks2008r2 release to run these, feel free to mail me ([email protected]) with any questions.  They are based upon a series of articles I wrote for SQLServerCentral which can be found here and here. Also I am starting ,or at least having an attempt at, a new user group in London.  This is SQLLunch, meeting downstairs at The Golden Fleece , EC4N 1SP which is 2 minutes from Bank Tube , we will have a twice monthly meeting (2nd and 4th Tuesdays) for an ‘All Stuff, No Fluff’ event.  Put plainly, a quick hello followed by a 45 minute presentation , which will ,optimistically, have you there and back to your desk within a lunch hour. Registrations for the first series of dates are at sqlserverfaq.com If you would like to speak, then please get in touch. Hope to see you there. 

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• Should I use title case in URLs?

  - by Amadiere

  We are currently deciding on a consistent naming convention across a site with multiple web applications. Historically, I've been an advocate of the 'lowercase all the letters!' when creating URLs: http://example.com/mysystem/account/view/1551 However, within the last year or two, specifically since I began using ASP.NET MVC & had more dealings with REST based URLs, I've become a fan of capitalizing the first letter of each section/word within the URL as it makes it easier to read (imho). http://example.com/MySystem/Account/View/1551 We're not in a situation where people need to read or be able to understand the URLs, so that's not a driver per se. The main thing we are after is a consistent approach that is rational and makes sense. Are there any standards that declare it good to do one way or another, or issues that we may run into on (at least realistically modern) setups that would choose a preference over another? What is the general consensus for this debate currently?

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• How do you turn a cube into a sphere?

  - by Tom Dalling

  I'm trying to make a quad sphere based on an article, which shows results like this: I can generate a cube correctly: But when I convert all the points according to this formula (from the page linked above): x = x * sqrtf(1.0 - (y*y/2.0) - (z*z/2.0) + (y*y*z*z/3.0)); y = y * sqrtf(1.0 - (z*z/2.0) - (x*x/2.0) + (z*z*x*x/3.0)); z = z * sqrtf(1.0 - (x*x/2.0) - (y*y/2.0) + (x*x*y*y/3.0)); My sphere looks like this: As you can see, the edges of the cube still poke out too far. The cube ranges from -1 to +1 on all axes, like the article says. Any ideas what is wrong?

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• Object Oriented programming on 8-bit MCU Case Study

  - by Calvin Grier

  I see that there's a lot of questions related to OO Programming here. I'm actually trying to find a specific resource related to embedded OO approaches for an 8 bit MCU. Several years back (maybe 6) I was looking for material related to Object Oriented programming for resource constrained 8051 microprocessors. I found an article/website with a case history of a design group that used a very small RAM part, and implemented many Object based constructs during their C design and development. I believe it was an 8051. The project was a success, and managed to stay inside the very small ROM/RAM they had available. I'm attempting to find it again, but Google can't locate it. The article was well written, and recommended a "mixed" approach using C methods for inheritance and encapsulation - if I recall correctly. Can anyone help me locate this article?

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• looking for information about HP openview servicedesk api or understanding an api without any information about one

  - by Zagorulkin Dmitry

  Good day folks. I am very confused in this situation. I need to implement system which will be based on HP open view service desk 4.5 api. But this system are reached the end of supporting period. On oficial site no information available I am looking an information about this API(articles, samples etc). Now i have only web-api.jar and javadoc. Methods in javadoc is bad documented. If you have any info, please share it with me. Thanks. Second question: there are methods for api(with huge amount of methods) understanding if it not documented or information is not available? PS:If it question is not belong here i will delete it.

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• Group arrival steering

  - by ltjax

  I've got group movement implemented pretty much like this: http://www.red3d.com/cwr/steer/CrowdPath.html Basically, that's combining path following and separation. It works nicely as long as units are in transit, but arrival does not work very well at all. Right now, units just cease to use the path following component once the "exit" the path, i.e. when their closest point on the path is on or past the end. This leads to those units bumping into each other and also overshooting the point the player clicked. Ideally, I'd have the units arrive scattered around the finish point (and reasonable close to each other), not all clumped up past the finish line. I'd imagine that some kind of arrival steering might work here, but based on other units and a "fuzzy" classification of the end of the path. Is there any proven way to do this?

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• Read only array, deep copy or retrieve copies one by one? (Performance and Memory)

  - by Arthur Wulf White

  In a garbage collection based system, what is the most effective way to handle a read only array if such a structure does not exist natively in the language. Is it better to return a copy of an array or allow other classes to retrieve copies of the objects stored in the array one by one? @JustinSkiles: It is not very broad. It is performance related and can actually be answered specifically for two general cases. You only need very few items: in this situation it's more effective to retrieve copies of the objects one by one. You wish to iterate over 30% or more objects. In this cases it is superior to retrieve all the array at once. This saves on functions calls. Function calls are very expansive when compared to reading directly from an array. A good specific answer could include performance, reading from an array and reading indirectly through a function. It is a simple performance related question.

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• RoundhousE now supports Oracle, SQL2000

  RoundhousE, the database migration software that is based on sql scripts has added support for Oracle and SQL 2000. There have also been numerous other little things, including better logging and a script run errors table. The script errors table captures what went wrong when/if your scripts are not quite up to par or there is some other issue. A special thanks goes out to http://twitter.com/PascalMestdach and http://twitter.com/jochenjonc. They worked hard on this and all I did was provide guidance...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Realistic planetary terrain generation with weights

  - by Programmdude

  I need terrain generation for a planet. The planet will be divided up into several hundred hexes, and I need it to be realistic and based on weights. I have dabbled in terrain generation before, but nothing like this. So I figure it would be a good idea to ask the community for answers, recommended articles or the like. By realistic, I mean not just random hexes, but continent shaped things with a few islands. More desert around the equator and more ice around the poles. I also have two weights I need to base it around: ice percentage and water percentage. That means that around XX% of the planet will need to be water. Does anyone have any advice or places to start? Generating arbitrary terrain is easy, but something a bit more "organic" like this seems rather difficult. It also needs to be seamless. Should be obvious since it's a planet, but no harm in pointing it out.

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• Game Formula/Mechanic

  - by Georgiadis Abraam

  i am trying to design a game for a project i have, The main idea is a 3 Type of Heroes 3 Stat per Hero There are no levels involved so the differences must be located on Stats. Flogic)The logic of fight is that type1hero has good chances winning type2hero, type2hero has good chances type3hero and type3hero has good chances winning type1hero. For over a week i am trying to find a stats based formula that will allow me to fix this but i cant, i was meddling with numbers yesterday and it was decent but i cant extract the formula out of it. Could you plz guide me or give me hints on how should i start creating formulas on a Non lvl game that fulfills the fLogic?

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• How abstract should you get with BDD

  - by Newton

  I was writing some tests in Gherkin (using Cucumber/Specflow). I was wondering how abstract should I get with my tests. In order to not make this open-ended, which of the following statements is better for BDD: Given I am logged in with email [email protected] and password 12345 When I do something Then something happens as opposed to Given I am logged in as the Administrator When I do something Then something happens The reason I am confused is because 1 is more based on the behaviour (filing in email and password) and 2 is easier to process and write the tests.

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• SEO indexing with dynamic titles, keywords and description

  - by Andrea Turri

  I'm working on a worldwide website (all in one single domain) so I'm wondering to create dynamic titles, descriptions, keywords and headings for each location. What I'm doing is to get information from the IP of the user and show for example a dynamic title: var userCity = codeToGetCityFromIP; <title>Welcome to userCity</title> // and same for description, keywords and headings... Obviously the code is different... I'd like to know if it is a good solution to create multiple SEO indexing based on cities? I'm also using GeoLocation and I do same using the returned values from it. I'm doing right or there are more effective ways to indexing in different countries and cities without create multiple website for each city of the world? Thanks.

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• How can I create a solid business case for upgrading our programmers to 256 GB SSD and 16 GB of RAM?

  - by Alex. S.

  We have an environment based on Microsoft stack (VS2010, SQL Server, etc), and I firmly believe that we could improve productivity a little bit, having more RAM and a faster secondary SSD. What data do you advice to gather so I can solidify my request in such a way the advantages can be unbiasedly demonstrated? Currently we have only 6GB of RAM and slower HD drives, and at home I have a 128 GB SSD in my desktop and 16 GB of RAM (I also think is the max amount of memory supported by our workstations, if we could go bigger then better), so I can feel the difference and it's real. I also want to add that we are in an industry with plenty of money, so the issue actually is how to get a budget approval from management and spend it wisely to increase productivity.

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• Recorded YouTube-like presentation and "live" demos of Oracle Advanced Analytics

  - by chberger

  Ever want to just sit and watch a YouTube-like presentation and "live" demos of Oracle Advanced Analytics?  Then ' target=""click here! This 1+ hour long session focuses primarily on the Oracle Data Mining component of the Oracle Advanced Analytics Option and is tied to the Oracle SQL Developer Days virtual and onsite events.   I cover: Big Data + Big Data Analytics Competing on analytics & value proposition What is data mining? Typical use cases Oracle Data Mining high performance in-database SQL based data mining functions Exadata "smart scan" scoring Oracle Data Miner GUI (an Extension that ships with SQL Developer) Oracle Business Intelligence EE + Oracle Data Mining resutls/predictions in dashboards Applications "powered by Oracle Data Mining for factory installed predictive analytics methodologies Oracle R Enterprise Please contact [email protected] should you have any questions.  Hope you enjoy!  Charlie Berger, Sr. Director of Product Management, Oracle Data Mining & Advanced Analytics, Oracle Corporation

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• How can I put Fedora GUI onto Ubuntu?

  - by Dareleth

  Okay, I'm pretty new to Linux-based systems, so if I say something wrong or ask something dumb, please bear with me. I have a project for school that requires some extensive work inside of the latest version of Fedora including screenshots of rather specific things. The VM system at my school runs Fedora 20 like a snail high on paint fumes, and my laptop's VirtualBox doesn't recognize the ISO I got from the official Fedora site, so I feel like I'm out of alternatives aside from formatting over Ubuntu. I'd rather not do that, as I rather enjoy this distro. I am running Ubuntu 14.04 on my laptop. At my login screen, I have the much appreciated option of selecting between a couple of GUI's--specifically, Ubuntu, GNOME, and Cinnamon. I would like to get the Fedora GUI added to this list, but I don't know where to start or if it's even an option. Any and all help is appreciated.

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• How to improve performance of ubuntu server 10.04 for my dms system?

  - by prasanna

  I will be using one of the dms (document management system) which is java + jackrabbit + postgresql + jboss + openoffice based on ubuntu server 10.04. this is the only application i will running on my server. i want to speed up the performance of the system for this. can you give me tips for improvements of ubuntu server? can i change any settings which give fast system performance. My application will be used concurrently by around 70 - 80 people. We have total 600 users. they will constanly upload , download the files in dms. i am going to use dedicated dell server with minimum 4 gb of RAM. i appreciate help. thanks and regards, Prasanna

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• Crosstalk Retail Panel

  - by David Dorf

  Susan Reda from Stores magazine hosted a panel at Crosstalk earlier this year.  I found the discussions on mobile and Commerce Anywhere very interesting, especially from the perspective of retailers not based in the US.  On the panel were: Michel Joncas, CIO at Groupe Dynamite (Canada) David Hunn, Head of IT Delivery at John Lewis (UK) Dan West, CIO at New Look (UK) Tom Madigan, VP at Oracle Retail Take a look: &amp;amp;amp;lt;span id=&amp;amp;amp;quot;XinhaEditingPostion&amp;amp;amp;quot;&amp;amp;amp;gt;&amp;amp;amp;lt;/span&amp;amp;amp;gt;

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• Conways Game of Life C#

  - by Darren Young

  Hi, Not sure if this is the correct place for this question or SO - mods please move if necessary. I am going to have a go at creating GoL over the weekend as a little test project : http://en.wikipedia.org/wiki/Conway's_Game_of_Life I understand the algorithm, however I just wanted to check regarding the implementation, from maybe somebody that has tried it. Essentially, my first (basic) implementation, will be a static grid at a set speed. If I understand correctly, these are the steps I will need: Initial seed Create 2d array with initial set up Foreach iteration, create temporary array, calculating each cells new state based on the Game of Life algorithm Assign temp array to proper array. Redraw grid from proper array. My concerns are over speed. When I am populating the grid from the array, would it simply be a case of looping through the array, assigning on or off to each grid cell and then redraw the grid? Am I on the correct path?

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• Determining Cost of API Calls

  - by Sam

  [This is a cross-post originally posted by me in SO. I think the question is more appropriate here.] I was going through the adwords API and came across their rate sheet - http://code.google.com/apis/adwords/docs/ratesheet.html . They charge $0.25 per 1000 API units and under the 'Operation Costs' sections list the cost (in API units) of different API calls. I am curious - based on what factors do they (and others API developers) calculate the cost of an API call? Is there any simple formula or a standard way to determine this? Note: When I say 'cost' of an API call, I don't mean the money but the API units. For example, how do you determine one API call costs 100 'units' and another 1000?

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• Restore passwd for root on a server

  - by s.mihai

  Hello,       I have a DVR server with linux embeded. It has some telnet functions but i don't have the password for it (the chinese manufacturer refuses to give me the password). I did get a upgrade folder from them and found a passwd file inside.       So i assume that when i upgrade the firmware the password in that file will be used.       Now i am trying to modify the file so taht i can insert a password i already know.       The problem is that i don't know how to create the password hash from what i figured the password hash is $1$1/lfbDKX$Hmd.FqzB8IZEohPesYi961       The file is named rom.ko and i found a command telnetd /mnt/yaffs/web/boa -c /mnt/yaffs/web & /bin/cp -f /mnt/yaffs/rom.ko /etc/shadow in a script file so i assume this is the right way.       Can you help me reconstruct a password that i know already? Tell me how or make one for me :) ?... passwd file: root:$1$1/lfbDKX$Hmd.FqzB8IZEohPesYi961:0:0:99999:7:-1:-1:33637592 bin::10897:0:99999:7::: daemon::10897:0:99999:7::: adm::10897:0:99999:7::: lp::10897:0:99999:7::: sync::10897:0:99999:7::: shutdown::10897:0:99999:7::: halt::10897:0:99999:7::: mail::10897:0:99999:7::: news::10897:0:99999:7::: uucp::10897:0:99999:7::: operator::10897:0:99999:7::: games::10897:0:99999:7::: gopher::10897:0:99999:7::: ftp::10897:0:99999:7::: nobody::10897:0:99999:7::: next::11702:0:99999:7:::

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