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• What deployment framework to use?

  - by jeruki

  We are trying to figure out what deployment method/framework to use with a python application, it has a basic wsgi server to make some REST resources available and a set of static web pages with the interface that are served through apache. The situation is as follows: My team works in isolated parts of the program and sometimes together in specific modules, we have different testing servers and one master server, we all work locally, sync the code using git, and then run a bash script that copies the files from the windows machines to the indicated linux server(using ssh) and then restarts the app. After thinking about it this doesn't seem to be the right way to do it, the script overwrites all the files in the server with the local files everytime. We want to be able to work in the same server without the worry of overwriting other people's code and we need to deploy to different servers to avoid restarting the service while others work with it and in the near future we need to deploy to the master or several clones of the master server when the application reaches a more mature state. We found serveral options capistrano, kwate, chef or fortress, even fleet but we wanted to have opinions from people that has used them to be sure it is what we need. So this are the main questions: Are these the kind of programs we should be looking at to achive a safe concurrent deployment process? Which one have you used/recommend and why? do you think it would help in our actual situation? Thank you so much for your feedback and advice on this.

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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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• Is this possible?

  - by PythonNewbie2

  Hello, I'm exploring some technologies and JSP with JSF 2.0 and Primefaces seems really cool. I'm new to all of these, but I'm a fast learner. I wondering if I can create the web app I want withh JSP/JSF/Primefaces or should I be looking to different technologies? If I should, which ones do you recommend? Here's a basic description of the app: Users log in with their username and password (maybe I can somehow incorporate google OPENID)? With a really nice UI, they will be presented a large list of questions specific to a certain category, for example, JSP. When they click on any of these questions, a little input opens up below it to allow the user to put in a link. If the link they enter has the same question on that webpage the URL points to, they will be awarded one point. This question then disappears and gets added to a different page that has a list of all correctly linked questions. On the right side of the screen, there will be a leaderboard with the usernames of the people with the top ten points. Is this possible with JSP/JSF/Primefaces, or should I be looking elsewhere for a different web technology? The idea is relatively simple - to be able to compile links to external websites for specific questions. I know I can build the UI easily with Primefaces. What I'm not sure is if JSP/JSF gives the ability to parse HTML at a certain URL to see if it contains words. I can do this with python easily by using urllib. Any help would be appreciated!!! What would be more helpful than a "Yes" or "No" answer would be links to where I can see sample code of external HTML parsing. Your input is truly appreciated! Thanks!

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• Any good C++ Component/Entity frameworks?

  - by Pat

  (Skip to the bold if you want to get straight to my question :) ) I've been dabbling in the different technologies available out there to use. I tried Unity and component based design, managing to get a little guy up and running around a map with basic pathfinding. I really loved how easy it was to program using components, but I wanted a bit more control and something more 2D friendly, so I went with LibGDX. I looked around and found 2 good frameworks for Java, which are Artemis and Apollo. I didn't like Artemis much, so I went with Apollo, which I loved. I managed to integrate it with Box2D and get a little guy running around bouncing balls. Great! But since I want to try out most of the options, there is still C++/SFML that I haven't tried yet. Coming from a Java/C# background, I've always wanted to get my hands dirty with C++. But then, after some looking around, I noticed there aren't any Component-Based frameworks for me to use. There's a somewhat done porting of Artemis, but, aside from not being completely finished, I didn't quite like Artemis even in Java. I found Apollo's approach much more.. logical. So, my question is, are there any good Component/Entity frameworks for C++ that I can use that are similar to Artemis, or preferably, Apollo?

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• Distinction between API and frontend-backend

  - by Jason

  I'm trying to write a "standard" business web site. By "standard", I mean this site runs the usual HTML5, CSS and Javascript for the front-end, a back-end (to process stuff), and runs MySQL for the database. It's a basic CRUD site: the front-end just makes pretty whatever the database has in store; the backend writes to the database whatever the user enters and does some processing. Just like most sites out there. In creating my Github repositories to begin coding, I've realized I don't understand the distinction between the front-end back-end, and the API. Another way of phrasing my question is: where does the API come into this picture? I'm going to list some more details and then questions I have - hopefully this gives you guys a better idea of what my actual question is, because I'm so confused that I don't know the specific question to ask. Some more details: I'd like to try the Model-View-Controller pattern. I don't know if this changes the question/answer. The API will be RESTful I'd like my back-end to use my own API instead of allowing the back-end to cheat and call special queries. I think this style is more consistent. My questions: Does the front-end call the back-end which calls the API? Or does the front-end just call the API instead of calling the back-end? Does the back-end just execute an API and the API returns control to the back-end (where the back-end acts as the ultimate controller, delegating tasks)? Long and detailed answers explaining the role of the API alongside the front-end back-end are encouraged. If the answer depends on the model of programming (models other than the Model-View-Controller pattern), please describe these other ways of thinking of the API. Thanks. I'm very confused.

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• How to set up a VirtualHost on Amazon EC2 for phpmyadmin

  - by Oudin

  Hi I'm currently working on setting up a VirtualHost on Amazon EC2 for accessing phpmyadmin so i can access it with test.example.com as oppose to it being widely available as it's default example.com/phpmyadmin. So far I've created a file "testfile" in /etc/apache2/sites-available/ with the code below and enabled it "a2ensite testfile" However I'm not getting the vhost to work <VirtualHost *:80> ServerAdmin [email protected] ServerName test.example.com ServerAlias test.example.com #DocumentRoot /usr/share/phpmyadmin DocumentRoot /home/user/public_html/folder RewriteEngine On RewriteCond %{HTTP_HOST} !test.example.com RewriteRule (.*) [L] <Directory /home/user/public_html/folder> Options FollowSymLinks DirectoryIndex index.php AllowOverride None <IfModule mod_php5.c> AddType application/x-httpd-php .php php_flag magic_quotes_gpc Off php_flag track_vars On php_flag register_globals Off php_admin_flag allow_url_fopen Off php_value include_path . php_admin_value upload_tmp_dir /var/lib/phpmyadmin/tmp php_admin_value open_basedir /usr/share/phpmyadmin/:/etc/phpmyadmin/:/var/lib/phpmyadmin/ </IfModule> </Directory> # Authorize for setup <Directory /usr/share/phpmyadmin/setup> <IfModule mod_authn_file.c> AuthType Basic AuthName "phpMyAdmin Setup" AuthUserFile /etc/phpmyadmin/htpasswd.setup </IfModule> Require valid-user </Directory> # Disallow web access to directories that don't need it <Directory /usr/share/phpmyadmin/libraries> Order Deny,Allow Deny from All </Directory> <Directory /usr/share/phpmyadmin/setup/lib> Order Deny,Allow Deny from All </Directory> ErrorLog /home/user/public_html/folder/logs/error.log LogLevel warn CustomLog /home/user/public_html/folder/logs/access.log combined </VirtualHost> sudo ln -s /usr/share/phpmyadmin /home/user/public_html/folder The above line creates a link of the phpmyadmin in the public folder. Any help on this would be greatly appreciated. Note: example.com will be replaced with my official domain

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• Sprite Animation using cocos2dx 2.0.2

  - by Lalit Chattar

  I am new in game development and learning coco2dx framework. I am trying to implement sprite animation using coco2dx. i tried many demo they all are same. But when i tried i got access violation error in my code. CCSpriteFrameCache::sharedSpriteFrameCache()->addSpriteFramesWithFile("AnimBear.plist"); CCSpriteBatchNode *spreetsheet = CCSpriteBatchNode::create("AnimBear.png"); this->addChild(spreetsheet); CCArray *bearArray = new CCArray(); for(int i = 1; i <= 8; i++) { char name[32] = {0}; sprintf(name, "bear%d.png",i); bearArray->addObject(CCSpriteFrameCache::sharedSpriteFrameCache()->spriteFrameByName(name)); } CCAnimation *walkAnim = CCAnimation::animationWithSpriteFrames(bearArray, 0.1f); CCSize size = CCDirector::sharedDirector()->getWinSize(); CCSprite *bear = CCSprite::spriteWithSpriteFrameName("bear1.png"); bear->setPosition(ccp(size.width/2, size.height/2)); CCAction *walkAction = CCRepeatForever::actionWithAction(CCAnimate::actionWithAnimation(walkAnim)); bear->runAction(walkAction); spreetsheet->addChild(bear); error is coming in first line while we passing plist refrence. Plese help me. I a using Visual Basic 2010 and put both files in Resource folder (png and plist).

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• Uganda .NET Usergroup April meeting

  - by Malisa L. Ncube

  Our April meeting was presented by Wilson Kutegeka on the topic of Building the Data Access a layer. In his presentation he showed a tool which he has developed to generate the entities, stores procedures that would be used to reduce having to retype the same boilerplate code for each entity. He uses visual basic samples to demonstrate access to the data from the database and inherits his classes from an abstract class which contains common properties including connection strings, save and delete methods. A number of questions emerged from the group, mostly those that use a business model based approaches. Some of the questions are on unit testing and mocking the models without using the database, the use of IoCs and loose coupled patterns. Some of the questions were on caching, Linq support and data annotations based validation. The presentation details can be found here. Intellisense LTD agreed to sponsor our website and we are glad to have that as we really need to have a website running. We would like to thank the following companies for supporting our community activities: Apress, Telerik, Manning, DevExpress (CodeRush), Ncover, and Intellisense.   Technorati Tags: Uganda .NET Usergroup

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• Versioning and Continuous Integration with project settings files

  - by Michael Stephenson

  I came across something which was a bit of a pain in the bottom the other week. Our scenario was that we had implemented a helper style assembly which had some custom configuration implemented through the project settings. I'm sure most of you are familiar with this where you end up with a settings file which is viewable through the C# project file and you can configure some basic settings. The settings are embedded in the assembly during compilation to be part of a DefaultValue attribute. You have the ability to override the settings by adding information to your app.config and if the app.config doesn’t override the settings then the embedded default is used. All normal C# stuff so far… Where our pain started was when we implement Continuous Integration and we wanted to version all of this from our build. What I was finding was that the assembly was versioned fine but the embedded default value was maintaining the non CI build version number. I ended up getting this to work by using a build task to change the version numbers in the following files: App.config Settings.settings Settings.designer.cs I think I probably could have got away with just the settings.designer.cs, but wanted to keep them all consistent incase we had to look at the code on the build server for some reason. I think the reason this was painful was because the settings.designer.cs is only updated through Visual Studio and it writes out the code to this file including the DefaultValue attribute when the project is saved rather than as part of the compilation process. The compile just compiles the already existing C# file. As I said we got it working, and it was a bit of a pain. If anyone has a better solution for this I'd love to hear it

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• Examples of limitations in IT due to different bit length by design

  - by Alaudo

  I am teaching the course "Introduction in Programming" for the first-year students and would like to find interesting examples where the datatype size in bits, chosen by design, led to certain known restrictions or important values. Here are some examples: Due to the fact that the Bell teleprinter used 7-bit-code (later accepted as ASCII) until now have we often to encode attachments in electronic messages to contain only 7 bit data. Classical limitation of 32-bit address space leads to the 4Gb maximal RAM size available for 32-bit systems and 4Gb maximal file size in FAT32. Do you know some other interesting examples how the choice of the data type (and especially its binary length) influenced the modern IT world. Added after some discussion in comments: I am not going to teach how to overcome limitations. I just want them to know that 1 byte can hold the values from -127..0..+127 o 0..255, 2 bytes cover the range 0..65535 etc by proving examples they know from other sources, like the above-mentioned base64 encoding etc. We are just learning the basic datatypes and I am trying to find a good reference for "how large" these types are.

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• Is there a portal dedicated to HTML5 games?

  - by Bane

  Just to get something straight; by "portal", I mean a website that frequently publishes a certain type of games, has a blog, some articles, maybe some tutorials and so on. All of these things are not required (except the game publishing part, of course), for example, I consider Miniclip to be a flash game portal. The reason for defining this term is because I'm not sure if other people use it in this context. I recently (less than a year ago) got into HTML5 game development, nothing serious, just my own small projects that I didn't really show to a lot of people, and that certainly didn't end up somewhere on the web (although, I am planning to make a website for my next game). I am interested in the existence of an online portal where indie devs (or non-indie ones, doesn't really matter that much) can publish their own games, sort of like "by devs for devs", also a place where you can find some simple tutorials on basic HTML5 game development and so on... I doubt something like this exists for several reasons: You can't really commercialize an HTML5 game without a strong server-side and microtransactions The code can be easily copied HTML5 is simply new, and things need time to get their own portals somewhere... If a thing like this does not exist, I think I might get into making one some day...

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• A Cautionary Tale About Multi-Source JNDI Configuration

  - by scott.s.nelson(at)oracle.com

  Here's a bit of fun with WebLogic JDBC configurations.  I ran into this issue after reading that p13nDataSource and cgDataSource-NonXA should not be configured as multi-source. There were some issues changing them to use the basic JDBC connection string and when rolling back to the bad configuration the server went "Boom".  Since one purpose behind this blog is to share lessons learned, I just had to post this. If you write your descriptors manually (as opposed to generating them using the WLS console) and put a comma-separated list of JNDI addresses like this: <jdbc-data-source-params> <jndi-name>weblogic.jdbc.jts.commercePool,contentDataSource, contentVersioningDataSource,portalFrameworkPool</jndi-name> <algorithm-type>Load-Balancing</algorithm-type> <data-source-list>portalDataSource-rac0,portalDataSource-rac1</data-source-list> <failover-request-if-busy>false</failover-request-if-busy> </jdbc-data-source-params> so long as the first address resolves, it will still work. Sort of.  If you call this connection to do an update, only one node of the RAC instance is updated. Other wonderful side-effects include the server refusing to start sometimes. The proper way to list the JNDI sources is one per node, like this: <jdbc-data-source-params> <jndi-name>weblogic.jdbc.jts.commercePool</jndi-name> <jndi-name>contentDataSource</jndi-name> <jndi-name>contentVersioningDataSource</jndi-name> <jndi-name>portalFrameworkPool</jndi-name> <algorithm-type>Load-Balancing</algorithm-type> <data-source-list>portalDataSource-rac0, portalDataSource-rac1, portalDataSource-rac2 </data-source-list> <failover-request-if-busy>false</failover-request-if-busy> </jdbc-data-source-params>(Props to Sandeep Seshan for locating the root cause)

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• Squid 3 and Internet Explorer 11 with authentication

  - by StBlade

  Need some help. My college has up until now been running Squid 3 on Ubuntu 12.02 and now 14.04 successfully. That was till recently. Our WSUS server is dishing out updates to all our workstations of which Internet Explorer 11 is one of them. Now all of a sudden users do not need to authenticate via the squid proxy to be able to use the internet. This makes it rather difficult as I also use SARG to generate usage logs for all users each day. All our workstations also have Chrome on them, and Chrome authenticates fine via the Squid proxy. Doing a couple of Googles, I ran into and article, where someone made mention that Microsoft has deprecated digest and basic authentication from IE 11. Reason was given that Office 2013 was giving problems as it was not giving the popup screen for authentication when Office tries to download templates from the internet. I have run into this problem, but by setting those sites to not authenticate via squid fixed the problem. Has anyone else run into something similiar? Would changing to NTLM or Kereberos be a solution?

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• Moving my sprite in XNA using classes

  - by Tom

  Hey, im a newbie at this programming lark and its really frustrating me. I'm trying to move a snake in all directions while using classes. Ive created a vector2 for speed and ive attempted creating a method which moves the snake within the snake class. Now I'm confused and not sure what to do next. Appreciate any help. Thanks :D This is what i've done in terms of the method... public Vector2 direction() { Vector2 inputDirection = Vector2.Zero; if (Keyboard.GetState().IsKeyDown(Keys.Left)) inputDirection.X -= -1; if (Keyboard.GetState().IsKeyDown(Keys.Right)) inputDirection.X += 1; if (Keyboard.GetState().IsKeyDown(Keys.Up)) inputDirection.Y -= -1; if (Keyboard.GetState().IsKeyDown(Keys.Down)) inputDirection.Y += 1; return inputDirection * snakeSpeed; } Appreciate any help. Thanks :D EDIT: Well let me make everything clear. Im making a small basic game for an assignment. The game is similar to the old snake game on the old Nokia phones. I've created a snake class (even though I'm not sure whether this is needed because im only going to be having one moving sprite within the game). After I written the code above (in the snake class), the game ran with no errors but I couldn't actually move the image :( EDIT2: Thanks so much for everyones responses!!

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• 12.04 - How do I Fix Grub Error 15 on New Dual Boot Install

  - by Garth

  I just installed 12.04 to Dual Boot (separate partitions) with an existing Win 7. Upon reboot after install things freeze after Grub 1.5 with a Grub Error 15 message. Is there any easy way to fix this? (I am posting this from my second computer) UPDATE: I managed to boot into both 12.04 and Win7 using BIOS: Selected the disk with the Win7 'C' Partition: resulted in the same error message Rebooted, tried the disk with the Ubuntu Partitions: *Grub Menu loaded: Managed to boot 12.04, rebooted, used BIOS again: Managed to boot Win 7 So, I have access to my computer again (thru BIOS), but this has been a pretty crappy install experience. Garth I used the the Final release 12.04 Ubuntu install disk, reformatted all Linux partitions, and expected a simple clean install. Other than specifying the Ubuntu Partitions, I did a basic install of 12.04. No way I did do anything to get this crap error failure! I have no idea why my install resulted in a Grub-15 error. CLOSED - Answered my own Question: I burned a RescuTux Disk and used it to recover grub2 (simplest and easiest way for me. http://www.supergrubdisk.org/category/download/rescatuxdownloads/ Garth

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• Building a Redundant / Distrubuted Application

  - by MattW

  This is more of a "point me in the right direction" question. I (and my team of 3) have built a hosted web app that queues and routes customer chat requests to available customer service agents (It does other things as well, but this is enough background to illustrate the issue). The basic dev architecture today is: a single page ajax web UI (ASP.NET MVC) with floating chat windows (think Gmail) a backend Windows service to queue and route the chat requests this service also logs the chats, calculates service levels, etc a Comet server product that routes data between the web frontend and the backend Windows service this also helps us detect which Agents are still connected (online) And our hardware architecture today is: 2 servers to host the web UI portion of the application a load balancer to route requests to the 2 different web app servers a third server to host the SQL Server DB and the backend Windows service responsible for queuing / delivering chats So as it stands today, one of the web app servers could go down and we would be ok. However, if something would happen to the SQL Server / Windows Service server we would be boned. My question - how can I make this backend Windows service logic be able to be spread across multiple machines (distributed)? The Windows service is written to accept requests from the Comet server, check for available Agents, and route the chat to those agents. How can I make this more distributed? How can I make it so that I can distribute the work of the backend Windows service can be spread across multiple machines for redundancy and uptime purposes? Will I need to re-write it with distributed computing in mind? I should also note that I am hosting all of this on Rackspace Cloud instances - so maybe it is something I should be less concerned about? Thanks in advance for any help!

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• samba share not on network after upgrading to Ubuntu 12.04LTS.

  - by Sylvain Huard

  I just upgraded an old Ubuntu box to 12.04LTS (machine named A-Ubuntu). This is an upgrade not a format re-install. All the accounts and config were preserved. The basic setup is a local network with 2 Ubuntu machines (let say A-Ubuntu, B-Ubuntu) and a MAC (C-MAC). Before the upgrade, all of them could see each other by their names not only the IP address. The local network has a D-Link Router where everybody is connected with RJ-45 wired etherenet (not wi-fi). Since the A-Ubuntu upgrade, we can't see this machine name on the Network and its name is not on machine list in the D-Link router anymore. We can see it's IP address only. I can't access A-Ubuntu from the other two by its name but I can ping it with its address (192.168.0.109). From A-Ubuntu, I can connect and see the shared samba folders on B-Ubuntu and C-MAC. But from B-Ubuntu and C-MAc, I can't connect to A-Ubuntu. Correct me if I'm wrong but this tells me that Samba should be fine and the real problem is that A-Ubuntu does not advertise its name on the Network so the D-Link does not have it in its table so nobody else finds it. After a lot of googling, I see that it is the job of avahi and mdns to do so. Those packages are running, I checked multiple config files for samba, avahi, mdns to see as if it is like the examples on the WEB and also similar to what I find on the working B-Ubuntu machine. This is the same. I did multiple service restart with samba, avahi, remove the firewall to make sure it does not block the hostname broadcast. I rebooted multiple time to make sure the update I was making were effective. Still, Can't see the A-Ubuntu name on the network. Any idea what it can be?, Where to look next?

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• How to organize a programming course?

  - by Bogdan Gavril

  I've been given the task to train our manual testers to become developers in test (write test automation!). some have basic programing knowledge (either dabbling in PHP or reading stuff) and some who have no experience. Note that I do have teaching experience, but with real students, not employees, and one concern is that they will not put extra hours except the 20% management gave them for the transition. Language to be taught and used: C# We have 8 hours per week to do this and should decide if they will make it in 2 months. I am thinking of a combined approach: use a manual such as Head First C# (although I'm not happy with the labs, they're mostly games and I don't want to add UI complexities) have them read from the manual do labs with them, solving more and more difficult problems and explain the theoretical stuff as well have them do a bigger project towards the end Some questions: do you have a better suggestion as far as manuals go? do you have a better aproach? Focus less on labs? what kind of assesments should I use and how often? should I let them do a bigger project (bank system or small game) and how much time should I invest in that? ideeas on labs? other resources ? Any other tips would be most welcomed! Thanks!

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• how do I write a functional spec quickly and efficiently

  - by giddy

  So I just read some fabulous articles by Joel on specs here. (Was written in 2000!!) I read all 4 parts, but Im looking for some methodical approaches to writing my specs. Im the only lonely dev, working on this fairly complicated app (or family of apps) for a very well known finance company. I've never made something this serious, I started out writing something like a bad spec, an overview of some sorts, and it has wasted a LOT of my time. Ive also made 3 mockup-kinda-thingies for my client so I have a good understanding of what they want. Also released a preview (a throw away working app with the most basic workflow), and Ive only written and tested some of the very core/base systems. I think the mistake Ive been making so far is not writing a detailed spec, so Im getting to it now. So the whole thing comprises of An MVC website (for admins & data viewing) 2 Silverlight modules (For 2 specific tasks) 1 Desktop Application Im totally short on time, resources and need to get this done quick, also, need to make sure these guys read it up equally quick and painlessly. So how do I go about it, Im looking for any tips, any real world stuff, how do you guys usually do it? Do you make a mock screenie of every dialog/form/page? Im thinking of making a dummy asp.net web forms project, then filling in html files in folders and making it look like my mvc url structure. Then having a section in the spec for the website and write up a page for every URL Ive got with a screenie. For my win forms app, Ive made somewhat of a demo Win Form project, would I then put in a dialog or stucture everything as I would in the real app and then screen shot it?

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• RAM caching causes severe performance drops

  - by B T

  I have read plenty of threads on memory caching and the standard response of "large cache is good, it shouldn't effect performance", "the kernel knows best". I have recently upgraded from 12.04 to 12.10 and changed from VirtualBox to VMware Workstation and the performance differences are severe (I suspect it is because of the latter). When I am running my virtual machine the system load monitor graph shows less than 50% memory usage generally. System load indicator is showing me that the rest of my RAM is used in the cache all the time. Plain and simple this is the comparison: BEFORE Cache was very sparingly used, pretty much none of my memory usage was the cache Swappiness was 0 (caused my memory to be used first, then swap only if needed) Performance was quite good and logical RAM was used fully first, caching was minimal. I could run enough software to utilize my full 4GB of RAM without any performance degradation whatsoever Swap space was then used as needed which was obviously slower (I am on a HDD) but was still usable when the current program was loaded into memory AFTER Cache is used to fill the full 4GB as soon as my virtual machine is run Swappiness is 0 (same behaviour as before but cache uses full memory straight away) Performance is terrible and unusable while running Ubuntu software Basic things like changing windows takes 2 minutes + Changing screens happens frame by frame over sometimes up to 5 minutes Cannot run an IDE and VM like I could with ease before So basically, any suggestions on how to take my performance back to how it was before while keeping my current setup? My suspicion is VMWare is the problem, but how do I see what is tied to the use of the cache? Surely there is a way to control this behaviour in software as polished as VMware? Thanks EDIT: Could also be important to note that the behaviour differs depending on whether VMware is open or closed. If VMware is open, then the ram will lock at like 50% and 50% cache and go into the complete lock up mentioned above. Contrastingly, if VMware is closed (after being open), then the RAM will continue to rise as it needs / cache will stay as the complete remaining memory and there is no noticeable performance degradation.

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• Understanding Visitor Pattern

  - by Nezreli

  I have a hierarchy of classes that represents GUI controls. Something like this: Control-ContainerControl-Form I have to implement a series of algoritms that work with objects doing various stuff and I'm thinking that Visitor pattern would be the cleanest solution. Let take for example an algorithm which creates a Xml representaion of a hierarchy of objects. Using 'classic' approach I would do this: public abstract class Control { public virtual XmlElement ToXML(XmlDocument document) { XmlElement xml = document.CreateElement(this.GetType().Name); // Create element, fill it with attributes declared with control return xml; } } public abstract class ContainerControl : Control { public override XmlElement ToXML(XmlDocument document) { XmlElement xml = base.ToXML(document); // Use forech to fill XmlElement with child XmlElements return xml; } } public class Form : ContainerControl { public override XmlElement ToXML(XmlDocument document) { XmlElement xml = base.ToXML(document); // Fill remaining elements declared in Form class return xml; } } But I'm not sure how to do this with visitor pattern. This is the basic implementation: public class ToXmlVisitor : IVisitor { public void Visit(Form form) { } } Since even the abstract classes help with implementation I'm not sure how to do that properly in ToXmlVisitor. Perhaps there is a better solution to this problem. The reason that I'm considering Visitor pattern is that some algorithms will need references not available in project where the classes are implemented and there is a number of different algorithms so I'm avoiding large classes. Any thoughts are welcome.

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• What are the best ways to professionally increase your online presence?

  - by Rob S.

  I've been hunting around the job market for a little bit now and I've been shocked by some of the things I am seeing. Software developers who make themselves more "known" online are getting far more and far better positions than people competing against them who are not as well "known" online. After doing some reading on the subject I realized that I actually shouldn't be so shocked by this. We are living in the most fast paced era of mankind and employers want to be able to learn as much as they can about a potential employee before they hire them. The easier we as software developers make it for us to be found it seems the better are chances of landing that dream job become. In some cases, employers are even finding us instead of us applying to them. So what are some of the best ways for me as a software developer to increase my online presence? I already hang around stack exchange sites such as programmers and stack overflow increasing my rep whenever I can. I maintain many open source projects as both a committer and project owner on Google Code and Github. I have a Twitter account, a website, and a blog. What else can I do to give myself a bigger online presence? Additionally, are there any good do's and don'ts for handling your web presence? Bashing your employer is an obvious don't but I'm interested in everything from the most basic to most subtle suggestions to give yourself a more appealing online presence. Thank you very much in advance for your time.

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• Bookmark Sentry Scans Your Chrome Bookmarks File For Bad Links and Dupes

  - by Jason Fitzpatrick

  Chrome: Bookmark Sentry, a free Chrome extension, takes the hard work out of checking your bookmark file for bad links and duplicates. Install it, forget about it, and get scheduled reports on the state of your bookmarks file. It’s that simple. Once you install the extension, open the options to toggle some basic settings to your liking (like the frequency of the scan, how long you want it to wait for a response, and whether you want it to look for bad links and/or duplicates). Once it finishes scanning you’ll get a report indicating the status of the links (why they are marked as missing or duped) and the ability to selectively or mass delete them. The only caveat we’d share is that it will tell you links behind any sort of security are unavailable. If you bookmark pages that you use for work, behind your corporate firewall for example, if the scanner runs when you’re not authenticated then it won’t be able to reach them. Other than that, it works like a charm. Bookmark Sentry is free, Google Chrome only. Bookmark Sentry [via Addictive Tips] How to Own Your Own Website (Even If You Can’t Build One) Pt 1 What’s the Difference Between Sleep and Hibernate in Windows? Screenshot Tour: XBMC 11 Eden Rocks Improved iOS Support, AirPlay, and Even a Custom XBMC OS

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• CodePlex Daily Summary for Monday, May 28, 2012

  CodePlex Daily Summary for Monday, May 28, 2012Popular ReleasesScreenShot: InstallScreenShot: This is the current stable release..Net Code Samples: Code Samples: Code samples (SLNs).LINQ_Koans: LinqKoans v.02: Cleaned up a bitKeelKit: KeelKit 3.0.7600.638: ?、??MySQL?Model?? Mysql ????? ? http://dev.mysql.com/downloads/connector/net/ ??? mysql-connector-net-6.5.4.msi ???， VS???KeelKit ???????MySQL , ????????? ?? DemoMySQL.rar ???， ???????????MySqL??Model. ?????? C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\machine.config ??? ??????。 <system.data> <DbProviderFactories> <add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlC...TwitterOAuth: TwitterOauth 0.25.16.0116: Beta releasetesttom05242012git02: d1: d1testdd05242012git001: zxczxc: zxczxczxcCODE Framework: 4.0.20524.0: This release has quite a few enhancements for WPF applications and SOA features. See change logs for more details.CommonLibrary.NET: CommonLibrary.NET 0.9.8 - Final Release: A collection of very reusable code and components in C# 4.0 ranging from ActiveRecord, Csv, Command Line Parsing, Configuration, Holiday Calendars, Logging, Authentication, and much more. FluentscriptCommonLibrary.NET 0.9.8 contains a scripting language called FluentScript. Application: FluentScript Version: 0.9.8 Build: 0.9.8.4 Changeset: 75050 ( CommonLibrary.NET ) Release date: May 24, 2012 Binaries: CommonLibrary.dll Namespace: ComLib.Lang Project site: http://fluentscript.codeplex.com...System Center Orchestrator Integration Packs: Active Directory 3.2: An integration pack enabling AD Automation 3.2 Updates LDAP Pathing updated to support cross forest scenarios Get Object Property Value Filtering efficiency enhancementsBunch of Small Tools: Mélangeur de vocabulaire japonais: Permet de générer des exercices de vocabulaire aléatoire à partir de listes de vocabulaire japonais. 22 listes sont fournies avec le programme.Expression Tree Visualizer for VS 2010: Expression Tree Visualizer Beta: This is a beta release, in this release some expression types are not handled and use a default visualization behavior. The first release will be published soon. Wait for it...Ulfi: Ulfi source: Build with Visual Studio 2010 Express C# or betterJayData - The cross-platform HTML5 data-management library for JavaScript: JayData 1.0 RC1 Refresh 2: JayData is a unified data access library for JavaScript developers to query and update data from different sources like webSQL, indexedDB, OData, Facebook or YQL. See it in action in this 6 minutes video: http://www.youtube.com/watch?v=LlJHgj1y0CU RC1 R2 Release highlights Knockout.js integrationUsing the Knockout.js module, your UI can be automatically refreshed when the data model changes, so you can develop the front-end of your data manager app even faster. Querying 1:N relations in W...Christoc's DotNetNuke Module Development Template: 00.00.08 for DNN6: BEFORE USE YOU need to install the MSBuild Community Tasks available from http://msbuildtasks.tigris.org For best results you should configure your development environment as described in this blog post Then read this latest blog post about customizing and using these custom templates. Installation is simple To use this template place the ZIP (not extracted) file in your My Documents\Visual Studio 2010\Templates\ProjectTemplates\Visual C#\Web OR for VB My Documents\Visual Studio 2010\Te...Microsoft Ajax Minifier: Microsoft Ajax Minifier 4.53: fix issue #18106, where member operators on numeric literals caused the member part to be duplicated when not minifying numeric literals ADD NEW FEATURE: ability to create source map files! The first mapfile format to be supported is the Script# format. Use the new -map filename switch to create map files when building your sources.CreditAnalytics: CreditAnalytics Release 1.5: 22 May 2012 (v1.5) (Build 449) Regressor Framework: Implementation of the regressor set, tolerance check, curve scenario regressors, regression framework suite, and the eventual regression output. Discount Curve Regression: Regressing Base Curve Creation, scenario Curve creation, and calculation of spot/effective implied rates and discount factors. Credit Curve Regression: Regressing Base Curve Creation, scenario Curve creation, and calculation of spot/effective implied hazard rates, reco...BlackJumboDog: Ver5.6.3: 2012.05.22 Ver5.6.3 　(1) HTTP????????、ftp://??????????????????????LogicCircuit: LogicCircuit 2.12.5.22: Logic Circuit - is educational software for designing and simulating logic circuits. Intuitive graphical user interface, allows you to create unrestricted circuit hierarchy with multi bit buses, debug circuits behavior with oscilloscope, and navigate running circuits hierarchy. Changes of this versionThis release is fixing start up issue.Orchard Project: Orchard 1.4.2: This is a service release to address 1.4 and 1.4.1 bugs. Please read our release notes for Orchard 1.4.2: http://docs.orchardproject.net/Documentation/Orchard-1-4-Release-NotesNew Projects.Net Code Samples: Various .Net code samples. AFSAspnetPusherV1: my new wns project lolAFSAspnetPusherV2: renewed version ofAFSAspnetPusherV4: renewed one v4AgileDesign Utilities Library: This library provides common functionality usable for most software projects: Logger - Asynchronous logging on top of new Microsoft logging class TraceSource with simplified API NameOf - Avoid using string names using static reflection Various reflection helpersAssociate Many to Many Relationship Entities Tool for Dynamics CRM 2011: Associate Many to many relationship tool is used for Dynamics CRM 2011 to associate or disassociate N:N relationship entities. This tool is dynamics crm 2011 solution, which consist of one entity and one plugin. Entity "Many to Many Relationship" record is used by Many to many relationship plugin to associate or disassociate entities. If many to many relationship entity record is created then plugin associate/disassociate entities from record data.Boxhead Multiplayer Server: A PHP dedicated server for my multiplayer version of Boxhead.CodedUITraceFiletoCSV: Console Application to parse the result file generated by Coded UI Test execution ".trx" into a comma separated file for more readable and detailed result.FlipExt: FlipExt is an easy to use image converter. It converts any image to .png .bmp .jpg .gif .tif .jpeg .tiff .ico. More extensions will be added soon.Foo Values Maker: Foo creates values for your test class variables so that you can write tests faster.FoodFree: Projeto de monitoramento de enchentesHouodeProject: ????ITLand of Dreams, Codename: Waterloo: We want to create a classical Live-MMORPG you can play on your smartphone (in the first step only “Windows Phone” will be supported) with the basic idea of Ultima Online or similiar games in our mind. You can create one or more characters, choose some name, gender, basic attributes (skin and hair color, …) a race (e.g. ‘Human’) and a profession (e.g. ‘fighter’ or ‘craftsman’). Now he can freely travel through the whole world, meeting other players, fighting monsters, absolving quests, tra...Makecert UI: Makecert UI is a shell layer application on top of the Microsoft makecert.exe utility. Makecert UI makes it easy for you to create self signed certificates, even from your own CA.MS CRM Rich Text box: Rich text box plug-in for MS CRM 2011. Hope it will be helpful for many of you. Thank you for using it and let me know if any further help needed.Nivo Slider Web Part SharePoint 2010: SharePoint 2010 implementation of Nivo Slider. Easy way to put Nivo slider on any page!!Office365 Weather WebPart: Office 365 WebPart that displays a 5 day weather forecast for a given location. The weather data is retrieved from the Met Office feed hosted on the Windows Azure Data Market. This is a free data feed that provides weather data for the UK only.Private Cloud Solution Design: This project is named “Training Cloud”. It provides an appropriate solution which can be used for technical audiences self learning with a hands-on-lab experience using Microsoft technology hosted in a virtualized environment built on System Center 2012. Since it depends on hardware, such as RAM, Sotrage, Network , etc. At last, the end user could have all labs ready which deloyed on private cloud. And it can be easily matain , setup labs with cloud’s function. pyUpdater: pyupdater provides a platform for updating python based applications.SharePoint Document Navigator: SP Document Navigator is a front-end solution for navigating a document library using jQuery and jQuery Mobile Trimetable: Train schedule for WP7Upload Master Pages & Page Layouts to Master Page Gallery using PowerShell: This document details the steps to upload Master pages and Page Layouts to Master Page Gallery using the “Upload Master Pages” Utility. 1- Download the .zip file 2- Edit the “UploadMasterPages.bat” file and Change the <<site collection url>> in the text below with respect to the environment. e.g. http://sitecollectionurl 3- Save the “UploadMasterPages.bat” file and close it. 4- Put all of your master pages and page layouts to Doc folder. 5- Run “UploadMasterPages.bat” file as Administrat...vivo: vivo Vietnamese Voice Vietnamese Voice recognition project thaihung.bkhn@gmail.com http://eking.vnvnv: VNV Vietnamese Voice Vietnamese Voice recognition project thaihung.bkhn@gmail.com http://eking.vnWindows Phone 7 User Guide Page: Take your app's users through a guided tour! Make your app's hidden gems shine, make users understand your app's logic and UX better.WP-FTS: This plugin for Wordpress replaces the default search engine, implemented using a simple "LIKE" operator, with the usage of the more powerful Full-Text Engine that comes with SQL Server.

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• Language parsing to find important words

  - by Matt Huggins

  I'm looking for some input and theory on how to approach a lexical topic. Let's say I have a collection of strings, which may just be one sentence or potentially multiple sentences. I'd like to parse these strings to and rip out the most important words, perhaps with a score that denotes how likely the word is to be important. Let's look at a few examples of what I mean. Example #1: "I really want a Keurig, but I can't afford one!" This is a very basic example, just one sentence. As a human, I can easily see that "Keurig" is the most important word here. Also, "afford" is relatively important, though it's clearly not the primary point of the sentence. The word "I" appears twice, but it is not important at all since it doesn't really tell us any information. I might expect to see a hash of word/scores something like this: "Keurig" => 0.9 "afford" => 0.4 "want" => 0.2 "really" => 0.1 etc... Example #2: "Just had one of the best swimming practices of my life. Hopefully I can maintain my times come the competition. If only I had remembered to take of my non-waterproof watch." This example has multiple sentences, so there will be more important words throughout. Without repeating the point exercise from example #1, I would probably expect to see two or three really important words come out of this: "swimming" (or "swimming practice"), "competition", & "watch" (or "waterproof watch" or "non-waterproof watch" depending on how the hyphen is handled). Given a couple examples like this, how would you go about doing something similar? Are there any existing (open source) libraries or algorithms in programming that already do this?

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