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• London Nov-8: Desktop Virtualisation Seminar

  - by mprove

  >> Simplify Application and Data Access with Oracle Desktop VirtualisationMany companies claim they’ll handle your application access needs, and yet only Oracle can provide you with every component needed for secure and reliable access to Oracle Applications and other enterprise software from a variety of devices. This means you can design your deployment knowing that all of the pieces work together, from applications and virtualisation to servers and storage systems.Join us to learn how Oracle desktop virtualisation helps you get the most from your valuable IT resources. Topics we’ll cover and demonstrate in this productive half-day event include: How to provide secure access to applications and data from nearly anywhere on a wide range of devices Use cases for desktop virtualisation How desktop virtualisation can support a wider business transformation agenda Reasons to embrace employees using their own devices for work-related activities How virtualisation can extend the life of your PCs and other devices How desktop virtualisation can decrease your carbon footprint and IT costs << Register here for the free event

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• Subscribe/Publish Model in Web-based Application (c#) - Best Practices for Event Handlers

  - by KingOfHypocrites

  I was recently exposed to a desktop application that uses an publish/subscribe model to handle commands, events, etc. I can't seem to find any good examples of using this in a web application, so I wonder if I am off base in trying to use this for web based development (on the server side)? I'm using asp.net c#. My main question in regards to the design is: When using a publish/subscribe model, is it better to have generic commands/events that pass no parameters and then have the subscribers look at static context objects that contain the data relevant to the event? Or is it better to create custom arguments for every event that contain data related to the event? The whole concept of a global container seems so convenient but at the same time seems to break encapsulation. Any thoughts or best practices from anyone who has implemented this type of model in a web based application? Even suggestions on this model out of the scope of my question are appreciated.

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• How Data Transfers differ on Smart Phones: Iphone vs. Android vs. Windows Phone

  - by MCH

  I am interested in how each individual smart phone is allowed to handle data transfers within a third-party app. I am interested in designing apps that allow customers to update, transfer, download, etc. data from their smart phone to their personal computer and vice-versa. (Ranging from just text, to XML, to a Relational Database) I only have experience with the Ipod Touch before and one particular app that maintained all the data on an online server, so to update the data on your pc or iphone you had to go online, are there other ways to do it? Like bluetooth, wireless LAN, USB, etc? I believe Apple has certain policies on this in order to control the App Store and individual Iphones. I suppose each company has a particular policy on how an app is allowed to transfer data to another system, does anyone have a good understanding of this? Thank you.

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• The rule of 5 - to use it or not?

  - by VJovic

  The rule of 3 (the rule of 5 in the new c++ standard) states : If you need to explicitly declare either the destructor, copy constructor or copy assignment operator yourself, you probably need to explicitly declare all three of them. But, on the other hand, the Martin's "Clean Code" advises to remove all empty constructors and destructors (page 293, G12:Clutter) : Of what use is a default constructor with no implementation? All it serves to do is clutter up the code with meaningless artifacts. So, how to handle these two opposite opinions? Should empty constructors/destructors really be implemented?

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• Character equipment combinations

  - by JimFing

  I'm developing a 2d isometric game (typical Tolkien RPG) and wondering how to handle character/equipment combinations. So for example, the player wears leather boots with chain-mail and a wooden shield and a sword - but then picks up plate-armour instead of chain-mail. I'm using Blender3D to create objects, environments and characters in 3D, then a script runs to render all 3D meshes into 2D orthographic tile maps. So I can use this script to create all the combinations of character equipment for me, but there would be an explosion in terms of the combinations required.

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• Repeater vs. ListView

  - by MoezMousavi

  I do really hate repeater. I was more a GridView lover but after 3.5 be born, I prefer ListView.  The first problem with Repeater is paging. You will need to write code to handle paging. Second common problem is empty data template. Have a look at this:             if (rptMyRepeater.Items.Count < 1)             {                 if (e.Item.ItemType == ListItemType.Footer)                 {                     Label lblFooter = (Label)e.Item.FindControl("lblEmpty");                     lblFooter.Visible = true;                 }             }   I found the above code is usefull if you need to show something like "There is no record" is your data source has no records. Although the ListView has a template.   If you combine ListView with a DataPager, you will be in heaven as it is sorting the paging for you without writing code. (http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.datapager.aspx)     Note: You have got to bind ListView in PreRender, it doesn't work properly in PageLoad   More: http://www.4guysfromrolla.com/articles/061009-1.aspx

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• Auto-provisioning hosting via API

  - by user101289

  I've built a sort of 'software as a service' website package for a specific industry. What I am looking to do is create a payment gateway that allows users to subscribe-- and once the subscription is active, it would auto-provision a web hosting plan for them (a shared account on a server, probably in a chroot'd environment so each user would be insulated from others). Ideally it would auto-install a CMS as well. Tons of web hosts provide a simple reseller plan where I could manually create all the users' hosting accounts-- but so far none that I've found allow you to do this via API. Is there a way to do this short of writing custom shell scripts on something like an EC2 platform? I'd prefer to leave all the server maintenance in the hands of dedicated support staff rather than having to manually handle updates, backups, etc. Thanks for any tips.

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• looking for advice regarding a free shopping cart solution [on hold]

  - by thirdCharm

  I am building a very small e-commerce site, and I need a free and simple to use/deploy/integrate shopping cart that I can add into my website in order to be able to sell a FEW items. I want the shopping cart to be an add-on in my website, nothing fancy.Ideally when a person clicks on the "Add to cart" button, they will be redirected to the shopping cart, which will then handle different types of payment methods, and everything else you would expect from a fully working shopping cart. I am currently developing my website using the following tools/frameworks: SQL Server 2008 R2 Visual Studio 2010 (ASP.NET 4.5 - C#) HTML5,CSS3, and JS. I am interested in also using PayPal alongside my shopping cart. Help of any kind is appreciated!!

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• Writing a basic shader for large input files

  - by Zoltan Varadi

  I started writing a shader for my iOS app and instead of starting from scratch i used this tutorial here: http://www.raywenderlich.com/3664/opengl-es-2-0-for-iphone-tutorial I wrote an import function, first to import wavefront .obj models. My problem is that with I can't handle larger inputs (with a simple cube it was working). I realized that the indices array is an array of GLubyte values, which is unsigned char, so as a result i cant have more than 256 indexes. I modified it to GLuint, but then only get a blank screen. What else needs to me modified? p.s.: the source can be downloaded from here: http://d1xzuxjlafny7l.cloudfront.net/downloads/HelloOpenGL.zip

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• Any recommendations for a domain buying negotiating service? [closed]

  - by Saunt Valerian

  The best domain for my niche and related is owned by a guy in San Fransisco, and I want to buy the domain from him but I don't want to deal with him directly (even though he has contacted me in the past). I need to find an intermediary company that can handle the negotiation for me. I don't expect to have to pay much since the guy has been squatting on it for more than 15 years and according to the Internet Wayback Machine it has never actually been used for anything at all - he has never added any value to it. It kind of irritates me that such a good domain has been sitting in this guy's closet gather dust for 15 years. I know that GoDaddy has a domain buying negotiating service (and the domain is registered through them, which may make it easier), but I really, really do not want to do business with GoDaddy if I don't have too. Do any of you know of other firms that deal with this sort of thing?

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• GPG Workflow in 11.04

  - by Ross Bearman

  At work we handle the transfer of small bits of sensitive data with GPG, usually posted on a secure internal website. Until Firefox 4 was released, we used FireGPG for inline decryption; however the IPC libraries that it relied upon were no longer present in FF4, making it unusable and it will no longer install in FF5. Currently I'm manually pasting the GPG blocks into a text file, then using the Nautilus context-menu plugin or the command line to decrypt the contents of the file. When we're handling large amount of these small files throughout the day this starts to become a real chore. I've looked around but can't seem to find much information on useful GPG clients in Ubuntu. A client that allowed me to paste in a GPG block and instantly decrypt it, and also paste in plaintext and easily encrypt it for multiple recipients would be ideal. So my question is does this exist? I can't seem to find anything about this with obvious searches on Google, so hopefully someone here can help, or offer an alternative workflow.

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• Polygon count budget

  - by Lautaro

  Is there any smart way to think about polygon budget relating to PC gaming today? My game will have one static 3d background scene and two fighters. No more enemies. I am thinking about having animated 3d models in the background for atmosphere, like spectators. So how could i find out what the polygon count for the player models and background scenarios could be. I guess the question is, what is a for today typical polygon count that most PCs can handle?

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• SEO For A Doman Name That Is A Dictionary Work Misspell [closed]

  - by Miles

  Possible Duplicate: How should I handle search engines auto-correcting the spelling of a site's name? My domain name is radiuus.com. Since the correct spelling of the word is with one u, when I search for "radiuus" on google it thinks I'm misspelling the word, kindly lets me know, and returns results for "radius". Example: https://www.google.com/search?q=radiuus&oq=radiuus&sugexp=chrome,mod=2&sourceid=chrome&ie=UTF-8 What can I do to prevent this? And taking this one step further: what can I do to get my site to show up when someone searches for "radius" spelled the correct way? Thanks!!

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• Need to test .properties one by one in every possibility?

  - by ??? Shengyuan Lu

  For example, there are some key-value configuration in .properties file. Such like someFeatureEnable=true. It must be bool type value which will be parsed by framework, in my case it's typical Java Spring configuration. Spring will handle the configuration and throw Exception when users set someFeatureEnable=123. My question is: if there many properties in .properties file, Is it worth testing them one by one? It's quite troublesome and low priority. The .properties file is always configured by tech administrator stuff. Limited chances that they will mess up the configuration. Thanks!

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• What failure can kill a long running IRC client? [closed]

  - by Xeoncross

  I have an IRC bot that I built in PHP using sockets that attempts to run forever and (if disconnected) reconnects again. I have it listening to several channels. Apparently it's fairly resilient, because it can run for several days before the process ends and CRON has to start it up again. However, based on the fact the process ends I'm assuming there are other conditions I'm not accounting for that are causing problems. I have nothing in my error logs giving me a hint. In addition, sometimes the process will continue running - but I notice it's no longer present in any of the channels on the IRC server which makes me think it violated some part of the protocol. I have logic setup to handle: reply to PING's correctly reconnect on disconnect (and reconnect to channels) respond to private messages (so someone doesn't ban it) prevent memory leaks What other failure could be killing my long-running IRC client?

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• How to write loosely coupled classes in node.js

  - by lortabac

  I am trying to understand how to design node.js applications, but it seems there is something I can't grasp about asynchronous programming. Let's say my application needs to access a database. In a synchronous environment I would implement a data access class with a read() method, returning an associative array. In node.js, because code is executed asynchronously, this method can't return a value, so, after execution, it will have to "do" something as a side effect. It will then contain at least 1 line of extraneous code which has nothing to do with data access. Multiply this for all methods and all classes and you will very soon have an unmanageable "code soup". What is the proper way to handle this problem? Am I approaching it the wrong way?

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• I can't link my Algorithms and the problem idea with writing the code?

  - by Novice Programmer

  First ,, i have just learnt c , c++ and started with java .. i faced serious problem in the first two ones . any sort of problem i can handle with it on my mind ,, if it's much complex i use the pen and paper method , i nearly could solve any easy problem ,, but when i start to write the code i don't know what's happening i got totally lost and even the best problems i can't link the solution with the code . it's not a problem with syntax because i know the syntax well . i need to figure what's the problem and find a way to solve it !! thanks . (Excuse me for my bad English)

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• How do non-coders do simple local templating to avoid redundant HTML? [closed]

  - by Max Cantor

  I'm a web developer. When I start designing a site, I use a framework to handle templating for me, even if it's just rack + erubis. What do non-developers do? If you want to implement a site in HTML and CSS without a framework running on a webserver, without frames, and without WYSYWIG tools like Dreamweaver... how do you avoid copy-and-pasting the HTML of your navigation (for example) on every single page you're writing? I feel stupid asking this because it seems like their must be an obvious answer, but for the life of me, I can't think of one right now.

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• Strategy for image sizes

  - by MotiveKyle

  I run a site that has a lot of writers that generate quite a few articles a day. I require them to provide two image sizes (one for the big headline image and one as the thumbnail). I've been wanting to change up the site layout a bit, but I am becoming limited by the image sizes for the posts. I have considered just cropping images, but they still need to look nice, and cropping doesn't always generate what I'd want. I'd prefer to just scale down by percentage (as I do with thumbnails). Should I just make the writers provide more images? How do other sites handle this?

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• Basic memcached question

  - by Aadith

  I have been reading up on distributed hashing. I learnt that consistent hashing is used for distributing the keys among cache machines. I also learnt that, a key is duplicated on mutiple caches to handle failure of cache hosts. But what I have come across on memcached doesn't seem to be in alignment with all this. I read that all cache nodes are independent of each other and that if a cache goes down, requests go to DB. Theres no mention of cache miss on a host resulting in the host directing the request to another host which could either be holding the key or is nearer to the key. Can you please tell me how these two fit together? Is memcached a very preliminary form of distributed hashing which doesnt have much sophistication?

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• What are good/fast methods to pull data from a database using JavaScript?

  - by Yatrix

  I'm pretty new to web technologies and I am creating a filter control that will have cascading controls. We are doing a lot of this through JavaScript and are debating the best route to take to the database. HTTPHandlers, WebServices and Ajax are all being considered (or a combination of them). We want to be able to handle a million rows in theory, so it has to be scalable to at that. We are going through JavaScript as our page must not do post-backs, if your'e wondering. I'm asking from an architectural standpoint, but will take any useful information. Links, control suggestions - anything you have, I'll happily listen to.

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• Exadata - Following up on customer deployments

  - by Carlos M. Orozco -Oracle

  Over the last year or so I've been visiting customers who have had Exadata deployed and have been enjoying the benefits the platform has been providing. Benefits include greater performance, consolidating multiple databases, data compression and time to value improvements. Most often I hear my reports run faster. One hospitality company report times that used to take 3 hrs now run in 12 seconds. Another services company reported all their batch reports taking 11hrs now run in 38 mins. Also reported that their transactions post faster, and batch updates run faster. So what does that mean? For most of them it means that now they have a platform that can handle growth. Most are growing 15% organically, but I've also seen 40% growth thru acquisition. Exadata has been keeping up with the additional data demand by customers leveraging compression and the smart storage features.

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• How to change keyboard sleep button to hibernate?

  - by Allu2

  I have a keyboard with a "sleep" button that does indeed make my computer go to sleep. The problem is that Ubuntu can't really handle sleep on my computer, causing it go into a non-responsive mode, having the CPU fan spinning at full speed and it stops receiving any input. Hibernation instead works mainly as it should. I would like to set the sleep key to hibernate, but the keyboard settings' hotkeys tab doesn't have this "sleep" keybinding and though I could make new one with hibernate --force as the command, it would require root rights to run. How can I change the keyboard sleep button action to hibernate?

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• I have domain.com and domain.org to the same site, should I use redirects to avoid duplicate content

  - by bunzip

  I have both the .com and the .org for a domain name, and using Apache I point them to the same site content. I think this might be causing problems with the Search Engines because of duplicate content. I want the .org to be the essential website. How do others handle this situation? Should I be using 301 redirects to point all the .com requests to the .org? Should I just use the link rel="canonical" on each page to point to the .org?

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• What's the reason exceptions are heavily used in managed (C# and Java) languages but not in C++? [on hold]

  - by ZijingWu

  AFAIK, a lot of C++ projects don't allow exceptions and deny them in coding guidelines. I have a lot of reasons, for example, exception is hard to handle correctly if your binary needs to be compiled by separate and different compilers. But it doesn't fully convince me, there is a lot of projects which are just using one compiler. Compared to C++, exceptions are heavily used in C# and Java and the reason can only be that exception are not bringing enough benefit. One point is debugbility in practice. Exception can not get the call stack in C++ code, but in C# and Java you can get the call stack from exception, it is significant and makes debugging easier. No-callstack is not the fault of the exception, it is the language difference, but it impacts the exception usage. So what's the reason that exceptions are frowned upon in c++ programs?

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