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• Should programmers itemize testing in testing? [on hold]

  - by Patton77

  I recently hired a programming team to do a port of my iPad app to the iPhone and Android platforms. Now, in a separate contract, I am asking them to implement a bunch of tips on how to play the app, similar like you would find in Candy Crush or Cut the Rope. They want to charge 12 hours @ $35/hr for the "Testing all of the Tips", telling me that normally it would take them more than 25 hours but that they will 'bear the difference'. I am not familiar with this level of itemization, but maybe it's a new practice? I am used to devs doing their own quality control, and then having a testing/acceptance period. They are using Cocos 2D-X, and they say that the tips going to multiple platforms makes all of the hours jack up. I feel like they might be overcharging, and it's difficult for me to know because it's kind of like with a mechanic. "It took us 5 hours to replace the radiator". How can you dispute that? It seems to me that most of you would charge for the work but NOT for hours that you are 'testing'. Am I missing something? Thanks for any help and advice you can give!

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• Why should I use Zend_Application?

  - by Billy ONeal

  I've been working on a Zend Framework application which currently does a bunch of things through Zend Application and a few resource plugins written for it. However, looking at this codebase now, it seems to me that using Zend_Application just makes things more complicated; and a plain, more "traditional" bootstrap file would do a better job of being transparent. This is even more the case because the individual components of Zend -- Zend_Controller, Zend_Navigation, etc. -- don't reference Zend_Application at all. Therefore they do things like "Well just call setRoute and be on your way," and the user is left scratching their head as to how to implement that in terms of the application.ini configuration file. This is not to say that one can't figure out what's going on by doing spelunking through the ZF source code. My problem with that approach is that it's to easy to depend on something that's an implementation detail, rather than a contract, and that all it seems to do is add an extra layer of indirection that one must wade through to understand an application. I look at pre ZF 1.8 example code, before Zend_Application existed, and everywhere I see plain bootstrap files that setup the MVC framework and get on their way. The code is clear and easy to understand, even if it is a bit repetitive. I like the DRY concept that Application gets you, but particularly when I'm assuming first people looking at the app's code aren't really familiar with Zend at all, I'm considering blowing away any dependence I have on Zend_Application and returning to a traditional bootstrap file. Now, my concern here is that I don't have much experience doing this, and I don't want to get rid of Zend_Application if it does something particularly important of which I am unaware, or something of that nature. Is there a really good reason I should keep it around?

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• How to filter a mysql database with user input on a website and then spit the filtered table back to the website? [migrated]

  - by Luke

  I've been researching this on google for literally 3 weeks, racking my brain and still not quite finding anything. I can't believe this is so elusive. (I'm a complete beginner so if my terminology sounds stupid then that's why.) I have a database in mysql/phpmyadmin on my web host. I'm trying to create a front end that will allow a user to specify criteria for querying the database in a way that they don't have to know sql, basically just combo boxes and checkboxes on a form. Then have this form 'submit' a query to the database, and show the filtered tables. This is how the SQL looks in Microsoft Access: PARAMETERS TEXTINPUT1 Text ( 255 ), NUMBERINPUT1 IEEEDouble; // pops up a list of parameters for the user to input SELECT DISTINCT Table1.Column1, Table1.Column2, Table1.Column3,* // selects only the unique rows in these three columns FROM Table1 // the table where this query is happening WHERE (((Table1.Column1) Like TEXTINPUT1] AND ((Table1.Column2)<=[NUMBERINPUT1] AND ((Table1.Column3)>=[NUMBERINPUT1])); // the criteria for the filter, it's comparing the user input parameters to the data in the rows and only selecting matches according to the equal sign, or greater than + equal sign, or less than + equal sign What I don't get: WHAT IN THE WORLD AM I SUPPOSED TO USE (that isn't totally hard)!? I've tried google fusion tables - doesn't filter right with numerical data or empty cells in rows, can't relate tables I've tried DataTables.net, can't filter right with numerical data and can't use SQL without a bunch of indepth knowledge, not even sure it can if you have that.. I've looked into using jQuery with google spreadsheets, doesn't work at all either I have no idea how I'm supposed to build a front end with my database. Every place that looks promising (like zohocreator) is asking for money, and is far too simplified to be able to do the LIKE criteria or SELECT DISTINCT stuff.

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• Windows Phone 7 Prototype 002: Animated Page Transitions + Writeable Bitmaps

  Motion is a key part of WP7 application development. Without motion, the WP7 UI is just a bunch of text. Not nearly as exciting. To delight users, you can add some transitions between pages.  The sample app includes some storyboards to animate between two pages. Other people have noted that you can just use the transitioning content control form the SIlverlight toolkit. Peter Torr also had a nice animating frame control in his mix demo code (his blog has some other great code samples for WP7 app dev). I took some of those concepts and the code from the TransitioningContentControl to make a new animating frame control. In this prototype, the frame takes a snapshot of the old content and the new content using writeable bitmaps and animates the snapshots and then replaces those with the actual page. The benefit is smoother animation on pages with lots of controls. Otherwise, if you have a large panorama, it might not animate that cleanly.  Like the other solutions based on the TransitioningContentControl, you can centralize all the animations in one place and not have to handle them on each individual page. Peters code also had a nice snippet for choosing the animation based on the navigation direction so you could just have a forward / backward animation and not have to do anything on each page. You could also probably add some more advanced transitions using pixel shaders or make an default no transition state if you wanted to have some specific animation on a page where individual  controls transitioned out differently like some of the WP7 shell apps. Sample Code 100% guaranteed to work on my emulatorDid 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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• The Silverlightning Talks

  - by Brian Genisio's House Of Bilz

  Tomorrow, I will be speaking in Grand Rapids at the Silverlight Firestarter.  It is a one day event intended to get people bootstrapped with Silverlight.  I will be giving the “Advanced Topics” presentation.  I have decided to run it as a series of “Lightning Talks”.  The idea is to give a lot of breadth so you know that the topic exists and move quickly between them.  To go along with the talks, here are a bunch of links that you might find useful: MVVM http://msdn.microsoft.com/en-us/magazine/dd458800.aspx http://msdn.microsoft.com/en-us/magazine/dd419663.aspx http://channel9.msdn.com/shows/Continuum/MVVM/ http://karlshifflett.wordpress.com/2008/11/08/learning-wpf-m-v-vm/ http://johnpapa.net/silverlight/5-minute-overview-of-mvvm-in-silverlight/ Good MVVM Frameworks http://www.galasoft.ch/mvvm/getstarted/ http://caliburn.codeplex.com/Wikipage   Prism http://compositewpf.codeplex.com/ http://mtaulty.com/CommunityServer/blogs/mike_taultys_blog/archive/2009/10/27/prism-and-silverlight-screencasts-on-channel-9.aspx http://www.grumpydev.com/2009/07/04/why-shouldn%E2%80%99t-i-use-prism/   Unit Testing Silverlight Unit Testing Framework http://code.msdn.microsoft.com/silverlightut http://silverlight.codeplex.com/ http://www.jeff.wilcox.name/2008/03/silverlight2-unit-testing/ NUnit Testing with Silverlight http://weblogs.asp.net/nunitaddin/archive/2008/05/01/silverlight-nunit-projects.aspx Useful Testing Tools http://testdriven.net/ http://nunit.org/ http://code.google.com/p/moq/ http://www.ayende.com/projects/rhino-mocks.aspx   Navigation Framework http://www.silverlightshow.net/items/The-Silverlight-3-Navigation-Framework.aspx http://www.silverlight.net/learn/videos/silverlight-videos/navigation-framework/   Farseer Physics Engine http://farseerphysics.codeplex.com/Wikipage http://physicshelper.codeplex.com/Wikipage http://www.andybeaulieu.com/Home/tabid/67/Default.aspx   Windows Phone 7 http://www.silverlight.net/getstarted/devices/windows-phone/ http://msdn.microsoft.com/en-us/library/ff402535%28VS.92%29.aspx

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• Some Nice Icon Themes for Ubuntu [on hold]

  - by Saurav Kumar

  Last night I was searching for some good looking icon themes availabe for Ubuntu, but unfortunately could not find any post which gives a list of themes :(. From yesterday night I started searching icons themes and installing one by one. So thought to share some of them hope it will help others to get a bunch of them in one post. This is a Q&A-Style tutorial which will cover: Few good icon themes which are used in famous Ubuntu type distros and are available in repository. Look and feel through pictures. How to easily install? I also request others to share their experiences of some awesome icon themes. Once themes are installed Ubuntu-Tweak will help to change and manage them, since I could not find another way to change the themes in Unity. In xfce(Xubuntu) it can be changed from Appearance. Just believe me this post will not be vast. If I'll remove pictures then it will become small, but it will not look good. Please give suggestion to make it small.

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• Tabs Visual Manager Adds Thumbnailed Tab Switching to Chrome

  - by ETC

  If you rock a bunch of tabs and sometimes need a little visual reminder to recall where you left a tab you’re looking for, Tabs Visual Manager thumbnails all your tabs for easy visual switching. Install Tabs Visual Manager, restart Chrome, and anytime you need to find a tab you can click on the Tabs Visual Manager icon in the toolbar. By default it opens a new tab with all your tab thumbnails, we found it was more convenient to switch it to pop-up mode (wherein it pops up a smaller menu from the icon itself instead of a whole new tab). Tabs Visual Manager is a free extension and works wherever Chrome does. Hit up the link below to read more and grab a copy. Tabs Visual Manager [Google Chrome Extensions] Latest Features How-To Geek ETC Should You Delete Windows 7 Service Pack Backup Files to Save Space? What Can Super Mario Teach Us About Graphics Technology? Windows 7 Service Pack 1 is Released: But Should You Install It? How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) Reclaim Vertical UI Space by Moving Your Tabs to the Side in Firefox Wind and Water: Puzzle Battles – An Awesome Game for Linux and Windows How Star Wars Changed the World [Infographic] Tabs Visual Manager Adds Thumbnailed Tab Switching to Chrome Daisies and Rye Swaying in the Summer Wind Wallpaper Read On Phone Pushes Data from Your Desktop to the Appropriate Android App

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• Black Screen after Resume from Sleep (Kubuntu)

  - by user20271

  I know there is a lot of other posts like this, but I have been looking for hours and I still haven't found any solution. I have recently installed Kubuntu Linux along side my Windows 7, the sleep on my Win7 works fine and resumes like normal. When I am loaded into Kubuntu, and I put my laptop to sleep, it goes into sleep as normal. When I go to RESUME from the sleep, the screen stays solid black, it doesn't light up, no blinking curser or anything. The Wi-Fi light is 'off' (orange) and I cannot turn it on. The Caps lock and the Num lock lights on the keyboard blink slowly. I hear something on the inside of the computer start to spin. I am not very experienced with Kubuntu/Linux, but I do know a bunch of computer terminology, I am still far from an expert though. I have about 300GB designated to my Win7 stuff, and another partition with about 100GB for my Kubuntu Linux. My computers specs are as follows: Windows 7 64-bit I have the most recent version of Kubuntu because I just downloaded it a few days ago and updated it yesterday. AMD Athlon Duel-Core processor 4GB of RAM And it is a HP G61 Laptop

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• Resolution Independence in libGDX

  - by ashes999

  How do I make my libGDX game resolution/density independent? Is there a way to specify image sizes as "absolute" regardless of the underlying density? I'm making a very simple kids game; just a bunch of sprites displayed on-screen, and some text for menus (options menu primarily). What I want to know is: how do I make my sprites/fonts resolution independent? (I have wrapped them in my own classes to make things easier.) Since it's a simple kids game, I don't need to worry about the "playable area" of the game; I want to use as much of the screen space as possible. What I'm doing right now, which seems super incorrect, is to simply create images suitable for large resolutions, and then scale down (or rarely, up) to fit the screen size. This seems to work okay (in the desktop version), even with linear mapping on my textures, but the smaller resolutions look ugly. Also, this seems to fly in the face of Android's "device independent pixels" (DPs). Or maybe I'm missing something and libGDX already takes care of this somehow? What's the best way to tackle this? I found this link; is this a good way of solving the problem?: http://www.dandeliongamestudio.com/2011/09/12/android-fragmentation-density-independent-pixel-dip/ It mentions how to control the images, but it doesn't mention how to specify font/image sizes regardless of density.

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• Is there any reason not to go directly from client-side Javascript to a database?

  - by Chris Smith

  So, let's say I'm going to build a Stack Exchange clone and I decide to use something like CouchDB as my backend store. If I use their built-in authentication and database-level authorization, is there any reason not to allow the client-side Javascript to write directly to the publicly available CouchDB server? Since this is basically a CRUD application and the business logic consists of "Only the author can edit their post" I don't see much of a need to have a layer between the client-side stuff and the database. I would simply use validation on the CouchDB side to make sure someone isn't putting in garbage data and make sure that permissions are set properly so that users can only read their own _user data. The rendering would be done client-side by something like AngularJS. In essence you could just have a CouchDB server and a bunch of "static" pages and you're good to go. You wouldn't need any kind of server-side processing, just something that could serve up the HTML pages. Opening my database up to the world seems wrong, but in this scenario I can't think of why as long as permissions are set properly. It goes against my instinct as a web developer, but I can't think of a good reason. So, why is this a bad idea? EDIT: Looks like there is a similar discussion here: Writing Web "server less" applications EDIT: Awesome discussion so far, and I appreciate everyone's feedback! I feel like I should add a few generic assumptions instead of calling out CouchDB and AngularJS specifically. So let's assume that: The database can authenticate users directly from its hidden store All database communication would happen over SSL Data validation can (but maybe shouldn't?) be handled by the database The only authorization we care about other than admin functions is someone only being allowed to edit their own post We're perfectly fine with everyone being able to read all data (EXCEPT user records which may contain password hashes) Administrative functions would be restricted by database authorization No one can add themselves to an administrator role The database is relatively easy to scale There is little to no true business logic; this is a basic CRUD app

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• How to Generate Spritesheet from a 'problematic' animated Symbol in Flash Pro CS6?

  - by Arthur Wulf White

  In the new Flash Pro CS6 there is an option to generate spriteheet from a symbol. I used these tutorials: http://www.adobe.com/devnet/flash/articles/using-sprite-sheet-generator.html http://tv.adobe.com/watch/cs6-creative-cloud-feature-tour-for-web/generating-sprite-sheets-using-flash-professional-cs6/ And it works really well! An artist I'm working with created a bunch of assets for a game. One of them is a walking person as seen from a top-down view. You can find the .fla here: https://docs.google.com/folder/d/0B3L2bumwc4onRGhLcGNId1p2Szg/edit (If this does not work let me know, it is the first time I used Google Drive to share files) 1 .When I press ctrl+enter I can see it is moving. When I look for the animation, I do not seem to find it. When I select to create a spritesheet, flash suggest creating a spritesheet with one frame in the base pose and no other (animation) frames. What is causing this and how do I correct it? 2 .I want to convert it to a sprite sheet for 32 angles of movement. Is there any magical easy way to get this done? Is there a workaround without using Flash CS6 to do the same thing?

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• New Visual Studio 2010 Extension - Collapse Solution

  - by MikeParks

  If your team has recently upgraded to Visual Studio 2010, take a second to check out the new Extension Manager. You can use it to browse through or install tons of tools, controls, or templates from the Visual Studio Gallery. My friend, Cory Cissell, and I recently teamed up and created an extension of our own called "Collapse Solution". It adds an option called Collapse Solution to the context menu of the solution node in the solution explorer. It also adds an option called Collapse Project to the context menu of each project node in the solution explorer. When that option is clicked, it will walk through the solution explorer tree and collapse any expanded child nodes in that section (projects, folders, code behind files, designer files, etc.). I use to have an add-in that did this in Visual Studio 2008 but it wasn't compatible when we upgraded to 2010 so we decided to write our own. The old tool was also packaged with a bunch of other junk that we didn't need so we figured it would be a much cleaner tool if it was broken off into its own extension. There's no need to install extra tools if you don't really need them. So if you have upgraded to Visual Studio 2010, please feel free to try out our Collapse Solution extension and leave us a rating/review in the Visual Studio Gallery. Thanks! Here's the link: http://visualstudiogallery.msdn.microsoft.com/en-us/2d81fec6-71f3-4fa5-87b4-c2aa18e42f92

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• Can't reinstall VLC

  - by David matthews

  I use VLC a lot. And when 2.0 came out Ubuntu did not update to that version, the REPO had the older version even months later, So I added the daily repo: http://ppa.launchpad.net/videolan/stable-daily/ubuntu and that worked for a while, after a few months later I received a 'Distribution upgrade' and when I installed it, it removed VLC. when I tried to re-install it gave me a bunch of unmet dependency's, so I disabled the source, ran apt-get update, and tried to install the older VLC, that did not work either. I eventually found a web page, and it helped me get it working, and I was also able to get the 'Stable Daily' working too But last night, I got another 'distro upgrade' and it uninstalled VLC again. when I try to reinstall from daily I get: The following packages have unmet dependencies: vlc : Depends: fonts-freefont-ttf but it is not installable Depends: vlc-nox (= 2.0.3+git20121005+r392-0~r42~precise1) but it is not going to be installed Depends: libvlccore5 (>= 2.0.0) but it is not going to be installed Recommends: vlc-plugin-notify (= 2.0.3+git20121005+r392-0~r42~precise1) but it is not going to be installed Recommends: vlc-plugin-pulse (= 2.0.3+git20121005+r392-0~r42~precise1) but it is not going to be installed E: Unable to correct problems, you have held broken packages. and from the default source: vlc : Depends: vlc-nox (= 2.0.3-0ubuntu0.12.04.1) but it is not going to be installed Depends: libvlccore5 (>= 2.0.0) but it is not going to be installed Recommends: vlc-plugin-notify (= 2.0.3-0ubuntu0.12.04.1) but it is not going to be installed vlc-plugin-pulse : Depends: vlc-nox (= 2.0.3-0ubuntu0.12.04.1) but it is not going to be installed Depends: libvlccore5 (>= 2.0.0) but it is not going to be installed E: Unable to correct problems, you have held broken packages. Any ideas? I am using ubuntu 12.04 64bit.

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• Updated Intel display driver causing errors when booting

  - by cdysthe

  I upgraded to to Graphics Installer 1.0.6 on my Ubuntu 14.04 and installed the drivers using the Intel Graphics Installer. The laptop is Intel Ivybridge powered with Intel HD graphics. It Optimus but I have disabled the Nvidia card in bios. The Intel Graphics Installer installs the package i915-3.15-3.13-dkms.deb which I assume is the updated driver. It causes a bunch of error messages when I boot. Here are the relevant errors from dmesg when I boot: [ 7.206151] drm: module verification failed: signature and/or required key missing - tainting kernel [ 7.208045] drm: module has bad taint, not creating trace events [ 7.336470] fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing generic driver [ 7.393854] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013) [ 7.393855] [drm] Driver supports precise vblank timestamp query. [ 7.393921] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem [ 7.505798] [drm] GMBUS [i915 gmbus dpb] timed out, falling back to bit banging on pin 5 [ 7.507233] init: Failed to obtain startpar-bridge instance: Unknown parameter: INSTANCE [ 7.944183] [drm:cpt_serr_int_handler] ERROR PCH transcoder A FIFO underrun [ 8.368479] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device [ 8.368480] i915 0000:00:02.0: registered panic notifier [ 8.818416] [drm] Enabling RC6 states: RC6 on, RC6p on, RC6pp off What could the problem be and will it affect performance? I tried to remove the package and the errors went away but I'm then running and older driver I assume?

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• The spork/platypus average: shameless self promotion

  - by Roger Hart

  This is the video of presentation I gave at UA Europe and TCUK this year. The actual sub-title was "Content strategy at Red Gate Software", but this heading feels more honest. For anybody who missed it, or is just vaguely interested, here's a link to me talking about de-suckifying the web. You can find the slideshare deck here, too* Watching it back is more than a little embarrassing, and makes me really, really want to do a follow up, so I can do three things: explain the rest of the big web project, now we've done it give some data on the outcome of the content review make a grovelling apology to our marketing guys, who I've been unfairly mean to in a childish effort to look cool There are a whole bunch of other TCUK presentations online, too. You can find them all here: http://tiny.cc/tcuk10_videos I'd particularly recommend Chris Atherton's: "Everything you always wanted to know about psychology and technical communication" - it's full of cool stuff. You should probably also watch David Black's opening keynote, which managed to make my hour of precocious grandstanding look measured, meek, and helpful. He actually makes some interesting points, but you'd basically have to ship Richard Dawkins off to Utah, if you wanted to go further out of your way to aggravate your audience. It does give an engaging account of running a large tech comms project, and raise some questions about how we propose to understand a world where increasing amounts of our stuff gets done by increasingly many increasingly complicated tissues of APIs. Well, sort of. That's what all the notes I made were about, anyway.   *Slideshare ate my fonts. Just so we're clear on this: I'd never use badly-kerned Arial in a presentation. Don't worry.

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• Crontab -e gives me error messages

  - by DNA

  I get a bunch of error messages when I run crontab -e Here are the error messages. And here is my crontab file under `/usr/bin/': # /etc/crontab: system-wide crontab # Unlike any other crontab you don't have to run the `crontab' # command to install the new version when you edit this file # and files in /etc/cron.d. These files also have username fields, # that none of the other crontabs do. SHELL=/bin/sh PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin # m h dom mon dow user command 17 * * * * root cd / && run-parts --report /etc/cron.hourly 25 6 * * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily ) 47 6 * * 7 root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly ) 52 6 1 * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly ) 30 * * * * root rsync /home/dnaneet/Downloads/*.pdf /home/dnaneet/Downloads/pdfs/ # I notice that the last task ('rsync') NEVER RUNS! Why is this happening? What did I do wrong? Running Ubuntu 11.10/Bash. I have read this... Am I missing a shebang? And I don't know if my anacron jobs run. Edit 1 In light of Masi's comment, I commented out lines 17 thru 25 of my crontab file with #. Now when I run sudo crontab -e, all I get is: /usr/bin/crontab: 11: 17: not found /usr/bin/crontab: 12: 25: not found (gedit:4301): Gtk-WARNING **: Attempting to store changes into `/root/.local/share/recently-used.xbel', but failed: Failed to create file '/root/.local/share/recently-used.xbel.GOHVBW': No such file or directory (gedit:4301): Gtk-WARNING **: Attempting to set the permissions of `/root/.local/share/recently-used.xbel', but failed: No such file or directory What in the world?

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• How to build MVC Views that work with polymorphic domain model design?

  - by Johann de Swardt

  This is more of a "how would you do it" type of question. The application I'm working on is an ASP.NET MVC4 app using Razor syntax. I've got a nice domain model which has a few polymorphic classes, awesome to work with in the code, but I have a few questions regarding the MVC front-end. Views are easy to build for normal classes, but when it comes to the polymorphic ones I'm stuck on deciding how to implement them. The one (ugly) option is to build a page which handles the base type (eg. IContract) and has a bunch of if statements to check if we passed in a IServiceContract or ISupplyContract instance. Not pretty and very nasty to maintain. The other option is to build a view for each of these IContract child classes, breaking DRY principles completely. Don't like doing this for obvious reasons. Another option (also not great) is to split the view into chunks with partials and build partial views for each of the child types that are loaded into the main view for the base type, then deciding to show or hide the partial in a single if statement in the partial. Also messy. I've also been thinking about building a master page with sections for the fields that only occur in subclasses and to build views for each subclass referencing the master page. This looks like the least problematic solution? It will allow for fairly simple maintenance and it doesn't involve code duplication. What are your thoughts? Am I missing something obvious that will make our lives easier? Suggestions?

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• SQL Developer: BLOBs and the External Editor

  - by thatjeffsmith

  We already know how easy it is to view images and plain text with the BLOB editor, yes? But what if I have in my column a bunch of PDFs stored? I want to see that stuff without having to save the file, finding it, and then opening it. Why can’t I just automatically open it directly from the database? Well, it seems you can. Here’s how. External Editors Step 1: Make sure you have the file types and associated editors defined in the preferences. External editors available from the BLOB viewer Based on what’s going on in your OS, you’ll have several of these already defined. If not, it’s pretty simple to add them manually. Now, assuming you’ve got some fun data loaded up, let’s try it out. A PDF As you can see in the screenshot above, PDF is mapped to Adobe Reader. I just happen to have a PDF loaded into a BLOB, let’s send it to the external editor. Click on the hyperlinked text to load the PDF straight to Adobe Here’s it working in action (click on the image to see the animation): If it’s a big file, you will see a dialog where we’re downloading the data. Now if I were to edit said document and save it back to the database via the ‘Load’ mechanism, then we’ve come full circle.

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• Defaults for Exporting Data in Oracle SQL Developer

  - by thatjeffsmith

  I was testing a reported bug in SQL Developer today – so the bug I was looking for wasn’t there (YES!) but I found a different one (NO!) – and I was getting frustrated by having to check the same boxes over and over again. What I wanted was INSERT STATEMENTS to the CLIPBOARD. Not what I want! I’m always doing the same thing, over and over again. And I never go to FILE – that’s too permanent for my type of work. I either want stuff to the clipboard or to the worksheet. Surely there’s a way to tell SQL Developer how to behave? Oh yeah, check the preferences So you can set the defaults for this dialog. Go to: Tools – Preferences – Database – Utilities – Export Now I will always start with ‘INSERT’ and ‘Clipboard’ – woohoo! Now, I can also go INTO the preferences for each of the different formats to save me a few more clicks. I prefer pointy hats (^) for my delimiters, don’t you? So, spend a few minutes and set each of these to what you’re normally doing and save yourself a bunch of time going forward.

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• Copying files to Truecrypt file container hangs

  - by Wagner Maestrelli

  I have a dual boot installation with Windows 7 Ultimate (32-bits, NTFS file sytem) and Ubuntu 10.10 (32-bits, ext4 file system). I have installed the version 7.0a of Truecrypt in both Operating Systems. Located in the Windows 7 HDD I have a 150 GB encrypted file container. It is a standard and dynamic file container, which means it's not hidden and uses a sparse file. This file was created using the Windows version of the Truecrypt program. When I logon in Windows the container is mounted as the drive E: and everything works fine! In Ubuntu the Windows's NTFS file system is automaticaly mounted after I logon. I've configured that using the ntfs-config package. In my ~/.profile I have this line to mount the truecrypt's file container: truecrypt /media/7EDEBCFADEBCABB1/Users/Wagner/hd/hd.tc /media/truecrypt1 The file container is mounted after the logon without any problem. I can access it, copy files to/from it, etc. But when I try do copy relatively large amounts of data (~50 MB) to it via nautilus or cp -R, it starts the copy, copies some data until certain point and then it just hangs! The progress bar does not move anymore and nothing happens. There is no error, it just hangs and that's it. I have to kill the process myself. This problem does not happen in Windows: I can copy very large amounts of data to the container and it works great. But in Ubuntu the problem always happens! I mean, whenever I try to copy a bunch of files together the copy process hangs. Does anyone ever faced this problem? Can anyone help? Thanks!

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• File format for animated scene

  - by stephelton

  I've got a custom OpenGL based rendering engine and I'd like to add support for cinema-type scene animation. The artist that is helping me uses primarily 3DSMax. I'd like a file format for exporting and importing this data. I'm also in need of a file format for skeletal animation data, which may have an impact here. I've been looking at MAXScript to manually export this stuff, which would buy me the most flexibility, but I have virtually no experience with 3DSMax itself, so I get a little lost when it comes to terminology. So I'd like to know what file formats exist for animated scene data, and whether they are appropriate for my use (my fear is that they will be way too broad for my fairly simple needs.) The way I view animated scene data is basically a bunch of references to [animated] models with keyframe-based matrices describing their orientation over time. And probably some special camera stuff to handle perspective. I might also want some event type stuff for adding/removing objects. Is this a sane concept?

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• What is the evidence that an API has exceeded its orthogonality in the context of types?

  - by hawkeye

  Wikipedia defines software orthogonality as: orthogonality in a programming language means that a relatively small set of primitive constructs can be combined in a relatively small number of ways to build the control and data structures of the language. The term is most-frequently used regarding assembly instruction sets, as orthogonal instruction set. Jason Coffin has defined software orthogonality as Highly cohesive components that are loosely coupled to each other produce an orthogonal system. C.Ross has defined software orthogonality as: the property that means "Changing A does not change B". An example of an orthogonal system would be a radio, where changing the station does not change the volume and vice-versa. Now there is a hypothesis published in the the ACM Queue by Tim Bray - that some have called the Bánffy Bray Type System Criteria - which he summarises as: Static typings attractiveness is a direct function (and dynamic typings an inverse function) of API surface size. Dynamic typings attractiveness is a direct function (and static typings an inverse function) of unit testing workability. Now Stuart Halloway has reformulated Banfy Bray as: the more your APIs exceed orthogonality, the better you will like static typing My question is: What is the evidence that an API has exceeded its orthogonality in the context of types? Clarification Tim Bray introduces the idea of orthogonality and APIs. Where you have one API and it is mainly dealing with Strings (ie a web server serving requests and responses), then a uni-typed language (python, ruby) is 'aligned' to that API - because the the type system of these languages isn't sophisticated, but it doesn't matter since you're dealing with Strings anyway. He then moves on to Android programming, which has a whole bunch of sensor APIs, which are all 'different' to the web server API that he was working on previously. Because you're not just dealing with Strings, but with different types, the API is non-orthogonal. Tim's point is that there is a empirical relationship between your 'liking' of types and the API you're programming against. (ie a subjective point is actually objective depending on your context).

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• Low hanging fruit where "a sufficiently smart compiler" is needed to get us back to Moore's Law?

  - by jamie

  Paul Graham argues that: It would be great if a startup could give us something of the old Moore's Law back, by writing software that could make a large number of CPUs look to the developer like one very fast CPU. ... The most ambitious is to try to do it automatically: to write a compiler that will parallelize our code for us. There's a name for this compiler, the sufficiently smart compiler, and it is a byword for impossibility. But is it really impossible? Can someone provide a concrete example where a paralellizing compiler would solve a pain point? Web-apps don't appear to be a problem: just run a bunch of Node processes. Real-time raytracing isn't a problem: the programmers are writing multi-threaded, SIMD assembly language quite happily (indeed, some might complain if we make it easier!). The holy grail is to be able to accelerate any program, be it MySQL, Garage Band, or Quicken. I'm looking for a middle ground: is there a real-world problem that you have experienced where a "smart-enough" compiler would have provided a real benefit, i.e that someone would pay for?

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• The problems with Avoiding Smurf Naming classes with namespaces

  - by Daniel Koverman

  I pulled the term smurf naming from here (number 21). To save anyone not familiar the trouble, Smurf naming is the act of prefixing a bunch of related classes, variables, etc with a common prefix so you end up with "a SmurfAccountView passes a SmurfAccountDTO to the SmurfAccountController", etc. The solution I've generally heard to this is to make a smurf namespace and drop the smurf prefixes. This has generally served me well, but I'm running into two problems. I'm working with a library with a Configuration class. It could have been called WartmongerConfiguration but it's in the Wartmonger namespace, so it's just called Configuration. I likewise have a Configuration class which could be called SmurfConfiguration, but it is in the Smurf namespace so that would be redundant. There are places in my code where Smurf.Configuration appears alongside Wartmonger.Configuration and typing out fully qualified names is clunky and makes the code less readable. It would be nicer to deal with a SmurfConfiguration and (if it was my code and not a library) WartmongerConfiguration. I have a class called Service in my Smurf namespace which could have been called SmurfService. Service is a facade on top of a complex Smurf library which runs Smurf jobs. SmurfService seems like a better name because Service without the Smurf prefix is so incredibly generic. I can accept that SmurfService was already a generic, useless name and taking away smurf merely made this more apparent. But it could have been named Runner, Launcher, etc and it would still "feel better" to me as SmurfLauncher because I don't know what a Launcher does, but I know what a SmurfLauncher does. You could argue that what a Smurf.Launcher does should be just as apparent as a Smurf.SmurfLauncher, but I could see `Smurf.Launcher being some kind of class related to setup rather than a class that launches smurfs. If there is an open and shut way to deal with either of these that would be great. If not, what are some common practices to mitigate their annoyance?

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• Error when restarting computer after successful Ubuntu 12.10 installation

  - by Amy

  I was having a lot of sudden issues with my computer (slow on start up progressing quickly to not being able to start ...even in safe mode). Worked on several different things. Finally tried formatting hd and then installing Windows 7. Got errors so I said screw it and tried Ubuntu. Downloaded it (via my laptop), burned on DVD, and tried a disc boot on my desktop. Went through the whole installation, said it was successful and progressed to the restart. It stopped at a screen with an error (0x1b5a6) from 'hd0' I don't remember the error code verbatim. Now when I try restarting it I get to the initial page, hit 'enter' on Ubuntu..and it just sits at a blank screen. Eventually it runs through this screen with a bunch of code and then just sits there. I can't type anything and enter does nothing. Some things on the screen are: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block (0,0) I don't know what else to do... Restarting does not work. I have been working on fixing my computer for almost 2 days straight...

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