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• Trying not to get ahead of myself but it is hard!

  - by Andrew

  Well I made a 5 year plan for myself (11years-16years) I am pretty good at Java, HTML, and PHP. I have already done some end projects: Small Java Platform Game A Small Polynomial Solver A Small Image Sharing Site A Chess Website: chesslounge.net I am currently doing some Android Development and so far I have made a program that Vibrates, Blinks the Light, or Creates a custom status message based on the user input. And a program that rotates a pyramid with a texture. My question is: Should I stick to what I am doing or Learn something a little new? I am itching to do C++, but what is your advice?

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• Split vector vs matrix notation for transformation

  - by seahorse

  Some rendering engines like Ogre prefer to use a individual vector based notation for transformations like the following Split vector notation: Net Transformation is represented by Scale vector = sx, sy, sz Transformation vector = tx, ty, tz Rotation Quaternion Vector = w,x,y,z Matrix notation: There are other engines which simply use a net combined transformation matrix. What are the advantages of the first notation over the second? Also for animation interpolation does it work in the first notation that we interpolate across the individual components and use the interpolated parts to get the net transformation? Is this another advantage?

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• Date calculation algorithm

  - by Julian Cuevas

  I'm working on a project to schedule a machine shop, basically I've got everything covered BUT date calculations, I've got a method called schedule (working on PHP here): public function schedule($start_date, $duration_in_minutes) Now my problem is, currently I'm calculating end time manually because time calculations have the following rules: During weekdays, work with business hours (7:00 AM to 5:00 PM) Work on Saturdays from 7:00 AM to 2:00 PM Ignore holidays (in Colombia we have A LOT of holidays) I already have a lookup table for holidays, I also have a Java version of this algorithm that I wrote for a previous version of the project, but that one's also manual. Is there any way to calculate an end time from a start time given duration?, my problem is that I have to consider the above rules, I'm looking for a (maybe?) math based solution, however I currently don't have the mind to devise such a solution myself. I'll be happy to provide code samples if necessary.

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• Is there an app/script I can deploy to enable my users to change their own LDAP passwords?

  - by Tom Wright

  I've recently enabled LDAP based authentication on my domain. This has allowed us to use a single set of credentials to administer the blog, the forum and the wiki. Unfortunately, this has come at the cost of users being able to change their own passwords. Ideally, users would be able to visit a page (i.e. mydomain.com/account), authenticate and then change their password. Does anyone know of a script or app that will allow me to do this quickly and easily? I guess it wouldn't be hard to write in PHP, but I'd prefer not to have the hassle.

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• How do you achieve a numeric versioning scheme with Git?

  - by Erlend

  My organization is considering moving from SVN to Git. One argument against moving is as follows: How do we do versioning? We have an SDK distribution based on the NetBeans Platform. As the svn revisions are simple numbers we can use them to extend the version numbers of our plugins and SDK builds. How do we handle this when we move to Git? Possible solutions: Using the build number from hudson (Problem: you have to check hudson to correlate that to an actual git version) Manually upping the version for nightly and stable (Problem: Learning curve, human error) If someone else has encountered a similar problem and solved it, we'd love to hear how.

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• Java web UI framework like ASP.NET MVC?

  - by Ethel Evans

  I'm doing some web apps for personal projects that might be shared out with my friends. I'm trying to use skills that will help me at work, but don't have $$ to spend on Visual Studio right now and don't want to try to cobble something together with Express Editions. Since I've been sort of wanting to bring my Java skills up to date and the main skills I want to work on are design and architecture skills, this isn't a big deal - except that I have no idea how to track down the right UI framework. I know I want something based on MVC, to get more practice with frameworks for that design pattern (we're using ASP .NET MVC2 at work). The UIs that I'll be making will be pretty simple - data entry, buttons, text, images. They will need AJAX. Any thoughts about which frameworks to look at? I'll be watching the comments, if anyone wants additional clarification on what I'm looking for.

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• Exclude list of specific files in wget

  - by nanker

  I am trying to download a lot of pages from a website on dial-up and it can be brutally slow. I have almost got the perfect wget command, but because I'm downloading pages from the same site wget wastes times downloading the same standard images for each page. If I know the name of the default page images, is there any way to have wget ignore and thus avoid downloading those for each and every page? Here is an example of one of the wget commands that my shell script generates into another shell script to download all of the pages: mkdir candy-canes-on-the-flannel-board-in-preschool cd candy-canes-on-the-flannel-board-in-preschool wget -p -nd -A jpg,html -k http://www.teachpreschool.org/2011/12/candy-canes-on-the-flannel-board-in-preschool/ wget -c --random-wait --timeout=30 --user-agent="Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.3) Gecko/2008092416 Firefox/3.0.3" http://www.teachpreschool.org/2011/12/candy-canes-on-the-flannel-board-in-preschool/ -O "candy-canes-on-the-flannel-board-in-preschool" rm Baby-and-Toddler.jpg Childrens-Books.jpg Creative-Art.jpg Felt-Fun.jpg Happy_Rainbow-e1338766526528.jpg index.html Language-and-Literacy.jpg Light-table-Button.jpg Math.jpg Outdoor-Play.jpg outer-jacket1-300x153.jpg preschoolspot-button-small.jpg robots.txt Science-and-Nature.jpg Signature-2.jpg Story-Telling.jpg Tags-on-Preschool.jpg Teaching-Two-and-Three-Year-olds.jpg cd ../ Now I realize the script is not likely as savvy as it could be but it is doing what I need at the moment except that you can see from the rm command that I would just like to prevent wget from downloading the files in the first place if possible. I almost forgot to mention, there are two wget commands and that is because the first one downloads the page as index.html and for some reason it does not open in my browser, however, when I open it and look at it in vim all of the page's content is there, so I am not sure why it does not open. But if I just issue the second wget command as it is then that page, same file really with an alternate name, opens up fine. Something that if I could fix would also help to streamline the process.

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• How will Deja-Dup operates when backing up to an external USB drive?

  - by Little Bobby Tables

  I want to set up regular backups, and deja-dup seems like a nice tool. However, I want to put my backups on an extension USB drive that I have, not on a remote network location. Naturally, this drive is not always connected. If I configure deja-dup to backup to a directory on this drive (e.g. /media/extention/backup), what would happen? Will it prompt me to connect the drive when it is missing (the desired behavior), or just fail silently? Is there some way to tweak it to do so? I can roll my own cron-based backup script that checks if this drive is mounted, but I would really prefer to use an existing, integrated tool.

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• io Exception error in wordcount example

  - by Anitha

  I have installed Hadoop 1.0.3 in Ubuntu 12.04 version (64bit) based on michael-noll.com/tutorials/running-hadoop-on-ubuntu-linux-single-node-cluster/ . I am trying to run a mapreduce job using the wordcount example. Running the command hduser@ubuntu: $/usr/local/hadoop/bin/hadoop jar hadoop-examples-1.0.3.jar wordcount /user/hduser/gutenberg /user/hduser/gutenberg-output gives the following error: Warning: $HADOOP_HOME is deprecated. Exception in thread "main" java.io.IOException: Error opening job jar: hadoop-examples-1.0.3.jar at org.apache.hadoop.util.RunJar.main(RunJar.java:90) Caused by: java.util.zip.ZipException: error in opening zip file at java.util.zip.ZipFile.open(Native Method) at java.util.zip.ZipFile.<init>(ZipFile.java:131) at java.util.jar.JarFile.<init>(JarFile.java:150) at java.util.jar.JarFile.<init>(JarFile.java:87) at org.apache.hadoop.util.RunJar.main(RunJar.java:88) Thanks in advance.

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• How to write a network game? [closed]

  - by Tom Wijsman

  Based on Why is so hard to develop a MMO?: Networked game development is not trivial; there are large obstacles to overcome in not only latency, but cheat prevention, state management and load balancing. If you're not experienced with writing a networked game, this is going to be a difficult learning exercise. I know the theory about sockets, servers, clients, protocols, connections and such things. Now I wonder how one can learn to write a network game: How to balance load problems? How to manage the game state? How to keep things synchronized? How to protect the communication and client from reverse engineering? How to work around latency problems? Which things should be computed local and which things on the server? ... Are there any good books, tutorials, sites, interesting articles or other questions regarding this? I'm looking for broad answers, but specific ones are fine too to learn the difference.

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• How can I choose between Linux and Windows hosting?

  - by Mohamad

  I am a relative beginner when it comes to choosing web servers and hosting plans. I'm about to signup for a hosting plan with GoDaddy. My main requirement is ColdFusion and MySQL. The plans on offer include Linux and Windows based plans. Which one should I choose, and why? I don't have a lot of requirements other than what I mentioned above. I never used Linux before but I doubt I'll ever need to do anything beyond tampering with my account. What are the main advantages of one over the other?

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• Mail Scanning System

  - by Mr D

  In the same way gmail can generate ads based on email content, I am looking for a way to develop a system which can: Allow users to connect their email address to our site It then would continously monitor all incomming emails From the incomming emails there would be a critera(e.g. a certain address or subject) if any of the emails matched the critea it would would be saved to a database Then once a new email had been found the users would receive an email notification will tells them to log back into the site to see it. My questions are: Would this be possible? What would be a good language to use(generally I like php, python and java) Are there any frameworks which would help do this? How would I connect the users email account to allow access to their emails(do I need a mail server?) Any advice? Thank you! If you need more information please let me know.

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• Ubuntu 12.04.1 LTS breaking down and sluggish

  - by ahamza

  I am in the process of switching from Windows to a Linux based system and am currently deciding between distributions...I am currently trying Ubuntu as WUBI. I find that my experience is not very smooth and streamlined for example, crash-reports, bugs, applications taking time to run etc etc (this in spite of the fact that I am very patient and am constantly researching solution to different driver and application issues). Was wondering if this is because I am running through NTFS right now or is it just like this? Looking to switch to Linux because of its opensource nature, interest in software development in college as well as maximizing the potential of my machine. I am running an AMD quadcore-x64 2.2GHz, 6GB RAM and 750 GB HDD on an HP G6 notebook. I would appreciate any honest opinions.

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• Is my webserver being abused for banking fraud?

  - by koffie

  Since a few weeks i'm getting a lot of 403 errors from apache in my log files that seem to be related to a bank frauding scheme. The relevant log entries look like this (The ip 1.2.3.4 is one I made up, I did not modify the rest of each line) www.bradesco.com.br:80 / 1.2.3.4 - - [01/Dec/2012:07:20:32 +0100] "GET / HTTP/1.1" 403 427 "-" "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11" www.bb.com.br:80 / 1.2.3.4 - - [01/Dec/2012:07:20:32 +0100] "GET / HTTP/1.1" 403 370 "-" "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11" www.santander.com.br:80 / 1.2.3.4 - - [01/Dec/2012:07:20:33 +0100] "GET / HTTP/1.1" 403 370 "-" "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11" www.banese.com.br:80 / 1.2.3.4 - - [01/Dec/2012:07:20:33 +0100] "GET / HTTP/1.1" 403 370 "-" "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11" the logformat I use is: LogFormat "%V:%p %U %h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" The strange thing is that all these domains are domains of banks and 3 out of the 4 domains are also in the list of the bank frauding scheme described on: http://www.abuse.ch/?p=2925 I would really like to know if my server is being abused for bank frauding or not. I suspect not, because it's giving 403 to all requests. But any extra checks that I can do to ensure that my server is not being abused are welcome. I'm also curious on how the "bad guys" expected my server to behave. I.e. are they just expecting my server to act as a proxy to hide the ip of the fake site, or are they expecting that my server will actually serve the fake banking website? Is the ip 1.2.3.4 more likely to be the ip of a victim or the ip of a bad guy. I suspect a bad guy, because it's quite unlikely that a real person would visit 4 bank sites in a second. If it's from a bad guy I'm very curious at what he is trying to do.

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• What are the downsides of leaving automation tags in production code?

  - by joshin4colours

  I've been setting up debug tags for automated testing of a GWT-based web application. This involves turning on custom debug id tags/attributes for elements in the source of the app. It's a non-trivial task, particularly for larger, more complex web applications. Recently there's been some discussion of whether enabling such debug ids is a good idea to do across the board. Currently the debug ids are only turned on in development and testing servers, not in production. There have been points raised that enabling debug ids does cause performance to take a hit, and that debug ids in production may lead to security issues. What are benefits of doing this? Are there any significant risks for turning on debug tags in production code?

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• Register now for the FREE Tech Days Online Conference January 20th

  - by Eric Nelson

  The perfect solution to the “January blues” is a good solid few hours learning about great technology. The 'Build an app for that' Online Conference is exactly that, featuring demo-rich sessions on building applications for the browser, Windows 7, and Windows Phone 7. There are three tracks letting you choose which sessions are most relevant to you - whether you're just considering client development with Silverlight, or you've already got stuck in to an advanced project. We'll also explore new form factors such as Phone and Slate, and how to develop touch-based applications. Finally we'll cover the important subject of how to create beautifully designed user interfaces. Register now Agenda:

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• problem connecting to magento connect

  - by amir

  I'm using magento 1.4.0 and when I try to get to magento connect and download a plugin the page will say Error: Please check for sufficient write file permissions Your Magento folder does not have sufficient write permissions, which this web based downloader requires. If you wish to proceed downloading Magento packages online, please set all Magento folders to have writable permission for the web server user (example: apache) and press the "Refresh" button to try again. does anyone know how I can fix this problem, thanks Update: the plugin I'm trying to use is MagentoPycho light box so I unpacked the folder into the app/code/local but it still doesn't show in the admin area

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• Twitter Tuesday - Top 10 @ArchBeat Tweets - May 20-26, 2014

  - by OTN ArchBeat

  What's everyone looking at? The list below represents the Top 10 most popular tweets for the last seven  days (May 20-26, 2014) among 2,845 people now following @OTNArchBeat. Video: #KScope14 Preview: @stewartbryson talks OBIEE, ODI, and GoldenGate @ODTUG #oracleace May 21, 2014 at 12:00 AM May edition of Oracle's Architect Community newsletter. Features on #WebLogic #WebCenter #SOA #Cloud. May 21, 2014 at 12:00 AM Oracle #ADF and Simplified UI Apps: I18n Feng Shui on Display | @Ultan May 22, 2014 at 12:00 AM The OTNArchBeat Daily is out! Stories via @JavaOneConf @arungupta May 20, 2014 at 12:00 AM Video: #WebLogic Server Templates | @FrankMunz May 21, 2014 at 12:00 AM Supporting multiple #SOASuite revisions with Edition-Based Redefinition | Betty van Dongen May 21, 2014 at 12:00 AM The OTNArchBeat Daily is out! Stories via @soacommunity @oraclebase @InfoQ May 24, 2014 at 12:00 AM Development Lifecycle for Task Flows in #WebCenter Portal | Lyudmil Pelov May 20, 2014 at 12:00 AM Manos libres y vista al frente: Con el futuro puesto #wearables May 21, 2014 at 12:00 AM #GoldenGate: Understanding OGG-01161 Bad Column Index Error | Loren Penton May 21, 2014 at 12:00 AM

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• Sharing unique links on social media vs SEO

  - by MJWadmin

  We're currently implementing a voucher system on our site which will allow our users to obtain a 25+% discount on certain products, provided they donate 10% of the purchase price to charity. We will offer the ability to share the discounts via social media in return for larger discounts to the sharer for each person who clicks through the link and buys an item. I understand that social links have SEO benifits, but this appears to be based on lots of people sharing the same link. If our voucher users share a unique link i.e. http://ourdomain.com/sipsfesdf rather than a fixed link http://ourdomain.com/product-name will we still receive the same benifts? Should we instead share something like http://ourdomain.com/product-name/sipsfesdf Thanks in advance.

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• dead keys not working in java app

  - by jippie

  The Arduino IDE is based on a java application called processing. While typing text into processing, it refuses to accept any of the characters under dead keys like " ' ^. As a work around I: Open another window (usually my browser or mail client); I type the character I need; Select and copy the character onto my clip board; Copy the character into processing. What do I have to do to make processing accept characters under dead keys? Disabling dead keys is not an option.

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• Why after each restart, my local .NET sites take time to load for the first time?

  - by Saeed Neamati

  I'm developing sites based on .NET platform. I usually deploy these sites on my local IIS, so that I can test them and see their functionality before going live. However, each time I restart windows, it seems that sites take a long time to run for the first time. I know about JIT and I'm also aware of this question, but it doesn't answer my question. Does JIT happens every time you restart windows? Is it related to creation of w3wp.exe process? Why sites are so slow for the first request after each restart?

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• ReSharper 5.0s LINQ Refactoring Continues to be Amazing!

    In this post, well take a straight forward procedure based set of code and convert it to LINQ using a ReSharper from JetBrains suggestion.   The initial code is as follows: int... This site is a resource for asp.net web programming. It has examples by Peter Kellner of techniques for high performance programming...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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• Squid3 not caching simple request and response

  - by Nick Spacek

  Hi folks, I've pared down my squid.conf to try to figure this out: http_port 80 accel defaultsite=host.to.cache cache_peer ip.to.cache parent 80 0 no-query originserver acl our_sites dstdomain host.to.cache http_access allow our_sites refresh_pattern . 1 20% 4320 Requests are being proxied correctly, so that's a start. Here's a request: GET http://host.to.cache/path?some_param=true Accept: */* Accept-Charset: ISO-8859-1,utf-8 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en Connection: keep-alive Host: host.to.cache User-Agent: myuseragent And the response: Connection: keep-alive Content-Length: 585 Content-Type: application/xml Date: Thu, 06 Jan 2011 18:33:11 GMT Via: 1.0 localhost (squid/3.0.STABLE19) X-Cache: MISS from localhost X-Cache-Lookup: MISS from localhost:80 The response has no caching-related headers, but I thought that refresh_pattern would set a default behavior for responses without caching-related headers. For my test, I wanted to cache everything for one minute at minimum. Am I missing something obvious? I did take a peek at this question: Squid isn't caching ...and ran through the page here: http://www.mnot.net/cache_docs/ briefly, but didn't see anything relevant (not to say that there isn't, I could have missed something). Thanks for any help.

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• Asynchronous update design/interaction patterns

  - by Andy Waite

  These days many apps support asynchronous updates. For example, if you're looking at a list of widgets and you delete one of them then rather than wait for the roundtrip to the server, the app can hide the one you deleted, giving immediate feedback. The actual deletion on the server will happen in the background. This can be seen in web apps, desktop apps, iOS apps, etc. But what about when the background operation fails. How should you feed back to the user? Should you restore the UI to the pre-deletion state? What about when multiple background operations fail together? Does this behaviour/pattern have a name? Perhaps something based on the Command pattern?

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• Is there an equivalent to the Max OS X software Hazel that runs on Ubuntu?

  - by Stuart Woodward

  Is there an equivalent to the Max OS X software Hazel that runs on Ubuntu? "Hazel watches whatever folders you tell it to, automatically organizing your files according to the rules you create. It features a rule interface [..]. Have Hazel move files around based on name, date, type, what site/email address it came from [..] and much more. Automatically put your music in your Music folder, movies in Movies. Keep your downloads off the desktop and put them where they are supposed to be." This question probably won't make sense unless you have used Hazel, but basically you can define rules via the GUI to move and rename files automatically to make an automated workflow.

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