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• Need decent undelete utility for Windows

  - by Michael Chermside

  So I get the phone call from a friend or relative or client: "Looks like I accidentally deleted 4 years worth of accounting data. Oh, and I don't have any backups. Can you help?" What I need is a good Windows tool (for NTFS I think) that scans blocks marked as deleted and attempts to recover the file. And I need one that can be run from a thumb drive or since installing new software has a decent chance of overwriting the data before it can be recovered. Googling for such tools turns up mostly carefully-crafted advertisements for moderately expensive products with a "Free! Demo! Version!" which is not exactly reassuring. Any recommendations for a good tool?

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• Drawing text from update method in XNA

  - by Sigh-AniDe

  I am having a problem drawing the "Game Over!" text once the user is on the last tile. This is what I have: The Update and drawText methods are in a class named turtle: public void Update(float scalingFactor, int[,] map, SpriteBatch batch, SpriteFont font) { if (isMovable(mapX, mapY - 1, map)) { position.Y = position.Y - (int)scalingFactor; angle = 0.0f; Program.form.direction = ""; if (mapX == 17 && mapY == 1)// This is the last tile(Tested) { Program.form.BackColor = System.Drawing.Color.Red; drawText(batch, font); } } } public void drawText(SpriteBatch spritebatch, SpriteFont spriteFont) { textPosition.X = 200; // a vector2 textPosition.Y = 200; spritebatch.Begin(SpriteSortMode.BackToFront, BlendState.AlphaBlend); spritebatch.DrawString(spriteFont, "Game Over!!!", textPosition, Color.Red); spritebatch.End(); } This update is in the Game1 class: protected override void Update(GameTime gameTime) { // Allows the game to exit if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed) this.Exit(); turtle.Update(scalingFactor, map, spriteBatch, font); base.Update(gameTime); } I have also added the font content to LoadContent: font = Content.Load<SpriteFont>("fontType"); What am I doing wrong? Why does the text not want to show on game completion? If I call the turtle.draw() in the main Draw method. The "Game Over" text stays on screen from the beggining. What am I missing? Thanks

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• Should a sysadmin contractor charge overtime for off-peak hours?

  - by Jakobud

  This is not necessarily a server-related question, but more of a system admin question that I think would related to many on SF. I'm doing Sysadmin/IT consulting for a small company. I only work about 3 days a week for them on average. If a server goes down or something like that during off hours (nights, weekends, 3am, etc) and they need it fixed during those time periods, should I be charging overtime for that? I would I not be justified in charging overtime until I've logged 40 hours for the week? Perhaps calling it overtime isn't the best name. I guess maybe its better to call it an off-peak hourly rate. Anyways I just was curious what other consultants did in these circumstances.

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• MyMessageBox for Phone and Store apps

  - by Daniel Moth

  I am sharing a class I use for both my Windows Phone 8 and Windows Store app projects. Background and my requirements For my Windows Phone 7 projects two years ago I wrote an improved custom MessageBox class that preserves the well-known MessageBox interface while offering several advantages. I documented those and shared it for Windows Phone 7 here: Guide.BeginShowMessageBox wrapper. Aside: With Windows Phone 8 we can now use the async/await feature out of the box without taking a dependency on additional/separate pre-release software. As I try to share code between my existing Windows Phone 8 projects and my new Windows Store app projects, I wanted to preserve the calling code, so I decided to wrap the WinRT MessageDialog class in a custom class to present the same MessageBox interface to my codebase. BUT. The MessageDialog class has to be called with the await keyword preceding it (which as we know is viral) which means all my calling code will also have to use await. Which in turn means that I have to change my MessageBox wrapper to present the same interface to the shared codebase and be callable with await… for both Windows Phone projects and Windows Store app projects. Solution The solution is what the requirements above outlined: a single code file with a MessageBox class that you can drop in your project, regardless of whether it targets Windows Phone 8, or Windows 8 Store apps or both. Just call any of its static Show functions using await and dependent on the overload check the return type to see which button the user chose.// example from http://www.danielmoth.com/Blog/GuideBeginShowMessageBox-Wrapper.aspx if (await MyMessageBox.Show("my message", "my caption", "ok, got it", "that sucks") == MyMessageBoxResult.Button1) { // Do something Debug.WriteLine("OK"); } The class can be downloaded from the bottom of my older blog post. Comments about this post by Daniel Moth welcome at the original blog.

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• What's the difference between hardware and software interrupt?

  - by robotrobert

  I'm gonna sketch my understanding of both. I've googled around but i'm not sure about my knowledge. Please correct me! Hardware interrupt is generated by the operation system event scheduler to reassign the cpu time for another process. Is this true? Software interrupt can be generated from a running program who wants for example to read a file, and for that we need to reassign the cpu for the appropriate operation system call. Is this true? Is there other kind of software/hardware interrupts?

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• How to make VLC play a .vlm configuration file in "With no interface mode"?

  - by Ole Jak

  How to make VLC play a VLM configuration file (.vlm) in "With no interface mode" on Windows? So I have a VLM configuration file that should stream audio from mic to localhost so no VLC user interface is needed. If I say to Windows "play VLM file with VLC" it plays correctly, starts the server where I need and streams data. But how to do such a thing manually from the command line (so we suppose we can call vlc.exe by VLC and we are now in folder with the vlc.exe and vlcConfig.vlm files)?

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• geomipmapping using displacement mapping (and glVertexAttribDivisor)

  - by Will

  I wake up with a clear vision, but sadly my laptop card doesn't do displacement mapping nor glVertexAttribDivisor so I can't test it out; I'm left sharing here: With geomipmapping, the grid at any factor is transposable - if you pass in an offset - say as a uniform - you can reuse the same vertex and index array again and again. If you also pass in the offset into the heightmap as a uniform, the vertex shader can do displacement mapping. If the displacement map is mipmapped, you get the advantages of trilinear filtering for distant maps. And, if the scenery is closer, rather than exposing that the you have a world made out of quads, you can use your transposable grid vertex array and indices to do vertex-shader interpolation (fancy splines) to do super-smooth infinite zoom? So I have some questions: does it work? In theory, in practice? does anyone do it? Does this technique have a name? Papers, demos, anything I can look at? does glVertexAttribDivisor mean that you can have a single glMultiDrawElementsEXT or similar approach to draw all your terrain tiles in one call rather than setting up the uniforms and emitting each tile? Would this offer any noticeable gains? does a heightmap that is GL_LUMINANCE take just one byte per pixel(=vertex)? (On mainstream cards, obviously. Does storage vary in practice?) Does going to the effort of reusing the same vertices and indices mean that you can basically fill the GPU RAM with heightmap and not a lot else, giving you either bigger landscapes or more detailed landscapes/meshes for the same bang? is mipmapping the displacement map going to work? On future cards? Is it going to introduce unsurmountable inaccuracies if it is enabled?

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• Raspberry Pi and Java SE: A Platform for the Masses

  - by Jim Connors

  One of the more exciting developments in the embedded systems world has been the announcement and availability of the Raspberry Pi, a very capable computer that is no bigger than a credit card.  At $35 US, initial demand for the device was so significant, that very long back orders quickly ensued. After months of patiently waiting, mine finally arrived.  Those initial growing pains appear to have been fixed, so availability now should be much more reasonable. At a very high level, here are some of the important specs: Broadcom BCM2835 System on a chip (SoC) ARM1176JZFS, with floating point, running at 700MHz Videocore 4 GPU capable of BluRay quality playback 256Mb RAM 2 USB ports and Ethernet Boots from SD card Linux distributions (e.g. Debian) available So what's taking place taking place with respect to the Java platform and Raspberry Pi? A Java SE Embedded binary suitable for the Raspberry Pi is available for download (Arm v6/7) here.  Note, this is based on the armel architecture, a variety of Arm designed to support floating point through a compatibility library that operates on more platforms, but can hamper performance.  In order to use this Java SE binary, select the available Debian distribution for your Raspberry Pi. The more recent Raspbian distribution is based on the armhf (hard float) architecture, which provides for more efficient hardware-based floating point operations.  However armhf is not binary compatible with armel.  As of the writing of this blog, Java SE Embedded binaries are not yet publicly available for the armhf-based Raspbian distro, but as mentioned in Henrik Stahl's blog, an armhf release is in the works. As demonstrated at the just-completed JavaOne 2012 San Francisco event, the graphics processing unit inside the Raspberry Pi is very capable indeed, and makes for an excellent candidate for JavaFX.  As such, plans also call for a Pi-optimized version of JavaFX in a future release too. A thriving community around the Raspberry Pi has developed at light speed, and as evidenced by the packed attendance at Pi-specific sessions at Java One 2012, the interest in Java for this platform is following suit. So stay tuned for more developments...

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• Smart Taskbar Is a Thumb Friendly Android Task Launcher

  - by ETC

  If you frequently use your phone one handed you’ll definitely want to check out Smart Taskbar, an add-on for Android phones that makes it easy to launch apps with the swipe of your thumb. Smart Taskbar tucks an application launcher on the side of your screen, out of sight. Swipe your thumb across the screen and it slides out like a dock, revealing five of your favorite apps in a toolbar across the top and your lesser used apps in the main panel below. It’s much easier to swipe to view your applications than it is to peck at the application icon on the home screen; Smart Taskbar is great for one handed launching. Search for “Smart Taskbar” in the Android Market to download a copy or hit up the link below to read more. Smart Taskbar [AppBrain] Latest Features How-To Geek ETC 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) How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Smart Taskbar Is a Thumb Friendly Android Task Launcher Comix is an Awesome Comics Archive Viewer for Linux Get the MakeUseOf eBook Guide to Speeding Up Windows for Free Need Tech Support? Call the Star Wars Help Desk! [Video Classic] Reclaim Vertical UI Space by Adding a Toolbar to the Left or Right Side of Firefox Androidify Turns You into an Android-style Avatar

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• An adequate message authentication code for REST

  - by Andras Zoltan

  My REST service currently uses SCRAM authentication to issue tokens for callers and users. We have the ability to revoke caller privileges and ban IPs, as well as impose quotas to any type of request. One thing that I haven't implemented, however, is MAC for requests. As I've thought about it more, for some requests I think this is needed, because otherwise tokens can be stolen and before we identify this and deactivate the associated caller account, some damage could be done to our user accounts. In many systems the MAC is generated from the body or query string of the request, however this is difficult to implement as I'm using the ASP.Net Web API and don't want to read the body twice. Equally importantly I want to keep it simple for callers to access the service. So what I'm thinking is to have a MAC calculated on: the url, possibly minus query string the verb the request ip (potentially is a barrier on some mobile devices though) utc date and time when the client issues the request. For the last one I would have the client send that string in a request header, of course - and I can use it to decide whether the request is 'fresh' enough. My thinking is that whilst this doesn't prevent message body tampering it does prevent using a model request to use as a template for different requests later on by a malicious third party. I believe only the most aggressive man in the middle attack would be able to subvert this, and I don't think our services offer any information or ability that is valuable enough to warrant that. The services will use SSL as well, for sensitive stuff. And if I do this, then I'll be using HMAC-SHA-256 and issuing private keys for HMAC appropriately. Does this sound enough? Have I missed anything? I don't think I'm a beginner when it comes to security, but when working on it I always. am shrouded in doubt, so I appreciate having this community to call upon!

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• Draw depth works on WP7 emulator but not device

  - by Luke

  I am making a game on a WP7 device using C# and XNA. I have a system where I always want the object the user is touching to be brought to the top, so every time it is touched I add float.Epsilon to its draw depth (I have it set so that 0 is the back and 1 is the front). On the Emulator that all works fine, but when I run it on my device the draw depths seem to be completely random. I am hoping that anybody knows a way to fix this. I have tried doing a Clean & Rebuild and uninstalling from the device but that is no luck. My call to spritebatch.Begin is: spriteBatch.Begin(SpriteSortMode.FrontToBack, BlendState.AlphaBlend); and to draw I use spriteBatch.Draw(Texture, new Rectangle((int)X, (int)Y, (int)Width, (int)Height), null, Color.White, 0, Vector2.Zero, SpriteEffects.None, mDrawDepth); Where mDrawDepth is a float value of the draw depth (likely to be a very small number; a small multiple of float.Epsilon. Any help much appreciated, thanks!

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• Code Behaviour via Unit Tests

  - by Dewald Galjaard

  Normal 0 false false false EN-ZA X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Some four months ago my car started acting up. Symptoms included a sputtering as my car’s computer switched between gears intermittently. Imagine building up speed, then when you reach 80km/h the car magically and mysteriously decide to switch back to third or even second gear. Clearly it was confused! I managed to track down a technician, an expert in his field to help me out. As he fitted his handheld computer to some hidden port under the dash, he started to explain “These cars are quite intelligent, you know. When they sense something is wrong they run in a restrictive program which probably account for how you managed to drive here in the first place...”  I was surprised and thought this was certainly going to be an interesting test drive. The car ran smoothly down the first couple of stretches as the technician ran through routine checks. Then he said “Ok, all looking good. We need to start testing aspects of the gearbox. Inside the gearbox there are a couple of sensors. One of them is a speed sensor which talks to the computer, which in turn will decide which gear to switch to. The restrictive program avoid these sensors altogether and allow the computer to obtain its input from other [non-affected] sources”. Then, as soon as he forced the speed sensor to come back online the symptoms and ill behaviour re-emerged... What an incredible analogy for getting into a discussion on unit testing software? Besides I should probably put my ill fortune to some good use, right? This example provide a lot of insight into how and why we should conduct unit tests when writing code. More importantly, it captures what is easily and unfortunately often the most overlooked goal of writing unit tests by those new to the art and those who oppose it alike - The goal of writing unit tests is to test the behaviour of our code under predefined conditions. Although it is very possible to test the intrinsic workings of each and every component in your code, writing several tests for each method in practise will soon prove to be an exhausting and ultimately fruitless exercise given the certain and ever changing nature of business requirements. Consequently it is true and quite possible whilst conducting proper unit tests, to call any single method several times as you examine and contemplate different scenarios. Let’s write some code to demonstrate what I mean. In my example I make use of the Moq framework and NUnit to create my tests. Truly you can use whatever you’re comfortable with. First we’ll create an ISpeedSensor interface. This is to represent the speed sensor located in the gearbox.  Then we’ll create a Gearbox class which we’ll pass to a constructor when we instantiate an object of type Computer. All three are described below.   ISpeedSensor.cs namespace AutomaticVehicle {     public interface ISpeedSensor     {         int ReportCurrentSpeed();     } }   Gearbox.cs namespace AutomaticVehicle {      public class Gearbox     {         private ISpeedSensor _speedSensor;           public Gearbox( ISpeedSensor gearboxSpeedSensor )         {             _speedSensor = gearboxSpeedSensor;         }         /// <summary>         /// This method obtain it's reading from the speed sensor.         /// </summary>         /// <returns></returns>         public int ReportCurrentSpeed()         {             return _speedSensor.ReportCurrentSpeed();         }     } } Computer.cs namespace AutomaticVehicle {     public class Computer     {         private Gearbox _gearbox;         public Computer( Gearbox gearbox )         {                     }          public int GetCurrentSpeed()         {             return _gearbox.ReportCurrentSpeed( );         }     } } Since this post is about Unit testing, that is exactly what we’ll create next. Create a second project in your solution. I called mine AutomaticVehicleTests and I immediately referenced the respective nunit, moq and AutomaticVehicle dll’s. We’re going to write a test to examine what happens inside the Computer class. ComputerTests.cs namespace AutomaticVehicleTests {     [TestFixture]     public class ComputerTests     {         [Test]         public void Computer_Gearbox_SpeedSensor_DoesThrow()         {             // Mock ISpeedSensor in gearbox             Mock< ISpeedSensor > speedSensor = new Mock< ISpeedSensor >( );             speedSensor.Setup( n => n.ReportCurrentSpeed() ).Throws<Exception>();             Gearbox gearbox = new Gearbox( speedSensor.Object );               // Create Computer instance to test it's behaviour  towards an exception in gearbox             Computer carComputer = new Computer( gearbox );             // For simplicity let’s assume for now the car only travels at 60 km/h.             Assert.AreEqual( 60, carComputer.GetCurrentSpeed( ) );          }     } }   What is happening in this test? We have created a mocked object using the ISpeedsensor interface which we've passed to our Gearbox object. Notice that I created the mocked object using an interface, not the implementation. I’ll talk more about this in future posts but in short I do this to accentuate the fact that I'm not not really concerned with how SpeedSensor work internally at this particular point in time. Next I’ve gone ahead and created a scenario where I’ve declared the speed sensor in Gearbox to be faulty by forcing it to throw an exception should we ask Gearbox to report on its current speed. Sneaky, sneaky. This test is a simulation of how things may behave in the real world. Inevitability things break, whether it’s caused by mechanical failure, some logical error on your part or a fellow developer which didn’t consult the documentation (or the lack thereof ) - whether you’re calling a speed sensor, making a call to a database, calling a web service or just trying to write a file to disk. It’s a scenario I’ve created and this test is about how the code within the Computer instance will behave towards any such error as I’ve depicted. Now, if you’ve followed closely in my final assert method you would have noticed I did something quite unexpected. I might be getting ahead of myself now but I’m testing to see if the value returned is equal to what I expect it to be under perfect conditions – I’m not testing to see if an error has been thrown! Why is that? Well, in short this is TDD. Test Driven Development is about first writing your test to define the result we want, then to go back and change the implementation within your class to obtain the desired output (I need to make sure I can drive back to the repair shop. Remember? ) So let’s go ahead and run our test as is. It’s fails miserably... Good! Let’s go back to our Computer class and make a small change to the GetCurrentSpeed method.   Computer.cs public int GetCurrentSpeed() {   try   {     return _gearbox.ReportCurrentSpeed( );   }   catch   {     RunRestrictiveProgram( );   } }     This is a simple solution, I know, but it does provide a way to allow for different behaviour. You’re more than welcome to provide an implementation for RunRestrictiveProgram should you feel the need to. It's not within the scope of this post or related to the point I'm trying to make. What is important is to notice how the focus has shifted in our approach from how things can break - to how things behave when broken.   Happy coding!

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• Have you used nDepend?

  - by Nick Harrison

  Have you Used NDepend? I have often wanted to use it, but never spent the money on it.   I have developed many tools that try to do pieces of what NDepend does, but never with as much success as they reach. Put simply, it is a tool that will allow you to udnerstand and monitor the architecture of your software, and it does it in some pretty amazing ways. One of the most impressive features is something that they call Code Query Language.   It allows you to write queries very similar to SQL to track the performance of various software metrics and use this to identify areas that are out of compliance with your standards and architecture. For instance, once you have analyzed your project, you can write queries such as : SELECT METHODS WHERE IsPublic AND CouldBePrivate  You can also set up such queries to provide warnings if there are records returned.    You can incorporae this into your daily build and compare build against build. There are over 82 metrics included to allow you to view your code in a variety of angles. I have often advocated for a "Code Inventory" database to track the state of software and the ROI on software investments.    This tool alone will take you about 90% of the way there. If you are not using it yet,  I strongly recommend that you do!

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• nginx configuration for URL URI paths

  - by hachiari

  I want to switch my webserver from apache to nginx however I have difficulties in converting my current htaccess to nginx configuration the conditions that I need: I want everything to be like apache, it can read file such as js, css, jpg, png ,etc I am currently using CodeIgniter PHP frameword, it uses the URI system thingy... So my htaccess configuration for CodeIgniter URI is: RewriteEngine On RewriteBase / RewriteCond %{REQUEST_URI} ^system.* RewriteRule ^(.*)$ /index.php/$1 [L] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ index.php/$1 [L] RewriteCond %{HTTP_HOST} ^www.domain.tld [NC] RewriteRule ^(.*)$ hxtp://domain.tld/$1 [L,R=301] I am also using minify to compress my css and js files, so the way I call my css and js is like: hxtp://domain.tld/?=css hxtp://domain.tld/?=js I tried some configurations from the net, but I could only solve problem no 2 Thank You

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• How to reset a Fritz!Box DSL router to factory settings?

  - by damluar

  I need to change the setting of router Fritz Box. The setting were set by another person. I can't connect to router using cable, may be standard port or address were changed. So the only option is to switch to factory settings. Usually there is a button which deletes all the settings. I read the documentation and they tell to call the number #991*15901590* on the router. Do I have to connect telephone to router?

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• Software: Launching League of Legends spectator mode from Command Line (Mac)

  - by Alex Popov

  Background: tl;dr at the end League of Legends has a spectator mode, in which you can watch someone else's game (essentially a replay) with a 3 minute delay. Popular LoL website OP.GG has figured out a clever way of hosting these spectator games on their own servers, thereby making them replayable, as opposed to only being available while the game is on (as Riot does it). If you request a replay from OP.GG, it sends a batch file which looks for where the League is situated and then the magic happens: @start "" "League of Legends.exe" "8394" "LoLLauncher.exe" "" "spectator fspectate.op.gg:4081 tjJbtRLQ/HMV7HuAxWV0XsXoRB4OmFBr 1391881421 NA1" This works fine on Windows. I'm trying to get it to work on Mac (which has an official client). First I tried running the same command by hand, (split for convenience) /Applications/ ... /LeagueOfLegends.app/ ... /LeagueofLegends 8393 LoLLauncher \ /Applications/ ... /LolClient spectator fspectate.op.gg:4081 tjJbtRLQ/HMV7HuAxWV0XsXoRB4OmFBr 1391881421 NA1 Running this, however, just starts the LoLLauncher, which closes all the active League processes. The exactly same thing happens if I just call /Applications/ ... /LeagueOfLegends.app/ ... /LeagueofLegends Next I tried seeing what actually happens when Spectator mode is initiated so I ran $ ps -axf | grep -i lol which showed UID PID PPID C STIME TTY TIME CMD 503 3085 1 0 Wed02pm ?? 0:00.00 (LolClient) 503 24607 1 0 9:19am ?? 0:00.98 /Applications/League of Legends.app/Contents/LOL/RADS/system/UserKernel.app/Contents/MacOS/UserKernel updateandrun lol_launcher LoLLauncher.app 503 24610 24607 0 9:19am ?? 1:08.76 /Applications/League of Legends.app/Contents/LoL/RADS/projects/lol_launcher/releases/0.0.0.122/deploy/LoLLauncher.app/Contents/MacOS/LoLLauncher 503 24611 24610 0 9:19am ?? 1:23.02 /Applications/League of Legends.app/Contents/LoL/RADS/projects/lol_air_client/releases/0.0.0.127/deploy/bin/LolClient -runtime .\ -nodebug META-INF\AIR\application.xml .\ -- 8393 503 24927 24610 0 9:44am ?? 0:03.37 /Applications/League of Legends.app/Contents/LoL/RADS/solutions/lol_game_client_sln/releases/0.0.0.117/deploy/LeagueOfLegends.app/Contents/MacOS/LeagueofLegends 8394 LoLLauncher /Applications/League of Legends.app/Contents/LoL/RADS/projects/lol_air_client/releases/0.0.0.127/deploy/bin/LolClient spectator 216.133.234.17:8088 Yn1oMX/n3LpXNebibzUa1i3Z+s2HV0ul 1400781241 NA1 Of Interest: there is (LolClient) which I cannot kill by it's PID. UserKernel updateandrun lol_launcher LoLLauncher.app is launched first. LoLLauncher is launched by the UserKernel (as we can see from the PPID) The very long command (PID: 24927) is how Spectator mode is launched, and is also launched by UserKernel. Spectator mode is launched in exactly the same way that the OP.GG .bat wanted to, with the only difference that Spectator mode connects to Riot instead of OP.GG's spectate server. I tried attaching GDB to the LolClient, but I couldn't get anything meaningful from it since it's an Adobe AIR application (and I've never used GDB with code other than mine own). Next I ran dtruss -a -b 100m -f -p $PID on everything I could think of: the LolClient, the LolLauncher and the UserKernel and skimmed the half a million lines produced. I found stuff like the GET request used to get the information of the game to spectate, but I could not see any launch of the equivalent of League of Legends.exe with spectator options. Finally, I ran lsof | grep -i lol to see if anything else was opened in the process, but didn't find anything that seemed appropriate. Open were UserKernel, LolLauncher, LolClient, Adobe AIR, LeagueofLegends and then Bugsplat, all of which are expected. None of this seemed especially relevant to figuring out how LeagueofLegends was opened into spectator mode. It obviously can be done, since Spectator mode is accessible from within the client. It seems likely that it can be done from the CLI, since Windows can do it and the clients are supposed to equals. Unless I'm missing something in the difference between how UNIX and Windows handle CLI application launches. My question is if there are any other things I can try to figure out how to launch Spectator mode myself. tl;dr: Trying to get into spectator mode from the CLI. It's possible on Windows (see first code block) but it just restarts League on Mac. What else can I try to find what call is made, and how to reproduce it? PS: Please let me know how I can improve this question or its formatting, I'd love to use StackOverflow/SuperUser, but as the guys said on the podcast this week (Ep. 59) it's very intimidating. Sorry for posting this on StackOverflow the first time :(

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• What is the correct and most efficient approach of streaming vertex data?

  - by Martijn Courteaux

  Usually, I do this in my current OpenGL ES project (for iOS): Initialization: Create two VBO's and one IndexBuffer (since I will use the same indices), same size. Create two VAO's and configure them, both bound to the same Index Buffer. Each frame: Choose a VBO/VAO couple. (Different from the previous frame, so I'm alternating.) Bind that VBO Upload new data using glBufferSubData(GL_ARRAY_BUFFER, ...). Bind the VAO Render my stuff using glDrawElements(GL_***, ...); Unbind the VAO However, someone told me to avoid uploading data (step 3) and render immediately the new data (step 5). I should avoid this, because the glDrawElements call will stall until the buffer is effectively uploaded to VRAM. So he suggested to draw all my geometry I uploaded the previous frame and upload in the current frame what will be drawn in the next frame. Thus, everything is rendered with the delay of one frame. Is this true or am I using the good approach to work with streaming vertex data? (I do know that the pipeline will stall the other way around. Ie: when you draw and immediately try to change the buffer data. But I'm not doing that, since I implemented double buffering.)

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• Can connect to Samba, but access denied to homes

  - by user893730

  I can connect to the samba server using both IP address and server name, and I can see the home folder name, but can't connect to it smb.cnf [global] workgroup = WORKGROUP server string = Venus wins support = no read only = no browsable = yes create mode = 0777 directory mode = 0777 case sensitive = no dns proxy = no interfaces = 127.0.0.1/8 eth0 bind interfaces only = yes log file = /var/log/samba/log.%m max log size = 1000 syslog = 0 security = user encrypt passwords = true passdb backend = smbpasswd obey pam restrictions = yes unix password sync = no passwd program = /usr/bin/passwd %u passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* . pam password change = no [homes] comment = User Directories path = /data/localdevs/%u public = no browsable = yes writable = yes the /etc/samba folder has the following files in it lmhosts smb.conf smb.conf.orig smbusers The output of "sudo pdbedit -L" is user1:500: ls -abl /data/localdevs/ drwxr-xr-x. 4 user1 user1 4096 Jul 24 17:35 user1 These are what samba logs are showing when I get the access denied to user1's home directory [2012/07/24 20:27:08.599216, 3] smbd/process.c:1489(process_smb) Transaction 24 of length 90 (0 toread) [2012/07/24 20:27:08.599350, 3] smbd/process.c:1298(switch_message) switch message SMBntcreateX (pid 2440) conn 0x7f6758780c00 [2012/07/24 20:27:08.599373, 4] smbd/uid.c:257(change_to_user) change_to_user: Skipping user change - already user [2012/07/24 20:27:08.599412, 3] smbd/vfs.c:881(check_reduced_name) check_reduced_name [.] [/data/localdevs/user1] [2012/07/24 20:27:08.599485, 3] smbd/vfs.c:1038(check_reduced_name) check_reduced_name: . reduced to /data/localdevs/user1 [2012/07/24 20:27:08.599508, 3] smbd/vfs.c:881(check_reduced_name) check_reduced_name [.] [/data/localdevs/user1] [2012/07/24 20:27:08.599552, 3] smbd/vfs.c:1038(check_reduced_name) check_reduced_name: . reduced to /data/localdevs/user1 [2012/07/24 20:27:08.599581, 3] smbd/dosmode.c:166(unix_mode) unix_mode(.) returning 0766 [2012/07/24 20:27:08.599643, 3] smbd/vfs.c:881(check_reduced_name) check_reduced_name [.] [/data/localdevs/user1] [2012/07/24 20:27:08.599668, 3] smbd/vfs.c:1038(check_reduced_name) check_reduced_name: . reduced to /data/localdevs/user1 [2012/07/24 20:27:08.599707, 4] smbd/open.c:1990(open_file_ntcreate) calling open_file with flags=0x0 flags2=0x0 mode=0766, access_mask = 0x81, open_access_mask = 0x81 [2012/07/24 20:27:08.599806, 3] smbd/open.c:467(open_file) Error opening file . (NT_STATUS_ACCESS_DENIED) (local_flags=0) (flags=0) [2012/07/24 20:27:08.599838, 3] smbd/error.c:80(error_packet_set) error packet at smbd/error.c(160) cmd=162 (SMBntcreateX) NT_STATUS_ACCESS_DENIED [2012/07/24 20:27:08.604075, 3] smbd/process.c:1489(process_smb) Transaction 25 of length 90 (0 toread) [2012/07/24 20:27:08.604193, 3] smbd/process.c:1298(switch_message) switch message SMBntcreateX (pid 2440) conn 0x7f6758780c00 [2012/07/24 20:27:08.604216, 4] smbd/uid.c:257(change_to_user) change_to_user: Skipping user change - already user [2012/07/24 20:27:08.604268, 3] smbd/vfs.c:881(check_reduced_name) check_reduced_name [.] [/data/localdevs/user1] [2012/07/24 20:27:08.604336, 3] smbd/vfs.c:1038(check_reduced_name) check_reduced_name: . reduced to /data/localdevs/user1 [2012/07/24 20:27:08.604395, 3] smbd/vfs.c:881(check_reduced_name) check_reduced_name [.] [/data/localdevs/user1] [2012/07/24 20:27:08.604419, 3] smbd/vfs.c:1038(check_reduced_name) check_reduced_name: . reduced to /data/localdevs/user1 [2012/07/24 20:27:08.604442, 3] smbd/dosmode.c:166(unix_mode) unix_mode(.) returning 0766 [2012/07/24 20:27:08.604532, 3] smbd/vfs.c:881(check_reduced_name) check_reduced_name [.] [/data/localdevs/user1] [2012/07/24 20:27:08.604554, 3] smbd/vfs.c:1038(check_reduced_name) check_reduced_name: . reduced to /data/localdevs/user1 [2012/07/24 20:27:08.604583, 4] smbd/open.c:1990(open_file_ntcreate) calling open_file with flags=0x0 flags2=0x0 mode=0766, access_mask = 0x81, open_access_mask = 0x81 [2012/07/24 20:27:08.604679, 3] smbd/open.c:467(open_file) Error opening file . (NT_STATUS_ACCESS_DENIED) (local_flags=0) (flags=0) [2012/07/24 20:27:08.604705, 3] smbd/error.c:80(error_packet_set) error packet at smbd/error.c(160) cmd=162 (SMBntcreateX) NT_STATUS_ACCESS_DENIED [2012/07/24 20:27:08.606977, 3] smbd/process.c:1489(process_smb) Transaction 26 of length 80 (0 toread) [2012/07/24 20:27:08.607096, 3] smbd/process.c:1298(switch_message) switch message SMBtrans2 (pid 2440) conn 0x7f6758780c00 [2012/07/24 20:27:08.607119, 4] smbd/uid.c:257(change_to_user) change_to_user: Skipping user change - already user [2012/07/24 20:27:08.607139, 3] smbd/trans2.c:5100(call_trans2qfilepathinfo) call_trans2qfilepathinfo: TRANSACT2_QPATHINFO: level = 1004 [2012/07/24 20:27:08.607162, 3] smbd/vfs.c:881(check_reduced_name) check_reduced_name [.] [/data/localdevs/user1] [2012/07/24 20:27:08.607184, 3] smbd/vfs.c:1038(check_reduced_name) check_reduced_name: . reduced to /data/localdevs/user1 [2012/07/24 20:27:08.607208, 3] smbd/trans2.c:5226(call_trans2qfilepathinfo) call_trans2qfilepathinfo . (fnum = -1) level=1004 call=5 total_data=0 [2012/07/24 20:27:08.608306, 3] smbd/process.c:1489(process_smb) Transaction 27 of length 80 (0 toread) [2012/07/24 20:27:08.608362, 3] smbd/process.c:1298(switch_message) switch message SMBtrans2 (pid 2440) conn 0x7f6758780c00 [2012/07/24 20:27:08.608383, 4] smbd/uid.c:257(change_to_user) change_to_user: Skipping user change - already user [2012/07/24 20:27:08.608403, 3] smbd/trans2.c:5100(call_trans2qfilepathinfo) call_trans2qfilepathinfo: TRANSACT2_QPATHINFO: level = 1005 [2012/07/24 20:27:08.608439, 3] smbd/vfs.c:881(check_reduced_name) check_reduced_name [.] [/data/localdevs/user1] [2012/07/24 20:27:08.608461, 3] smbd/vfs.c:1038(check_reduced_name) check_reduced_name: . reduced to /data/localdevs/user1 [2012/07/24 20:27:08.608484, 3] smbd/trans2.c:5226(call_trans2qfilepathinfo) call_trans2qfilepathinfo . (fnum = -1) level=1005 call=5 total_data=0

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• Relationship between Repository and Unit of Work

  - by NullOrEmpty

  I am going to implement a repository, and I would like to use the UOW pattern since the consumer of the repository could do several operations, and I want to commit them at once. After read several articles about the matter, I still don't get how to relate this two elements, depending on the article it is being done in a way u other. Sometimes the UOW is something internal to the repository: public class Repository { UnitOfWork _uow; public Repository() { _uow = IoC.Get<UnitOfWork>(); } public void Save(Entity e) { _uow.Track(e); } public void SubmittChanges() { SaveInStorage(_uow.GetChanges()); } } And sometimes it is external: public class Repository { public void Save(Entity e, UnitOfWork uow) { uow.Track(e); } public void SubmittChanges(UnitOfWork uow) { SaveInStorage(uow.GetChanges()); } } Other times, is the UOW whom references the Repository public class UnitOfWork { Repository _repository; public UnitOfWork(Repository repository) { _repository = repository; } public void Save(Entity e) { this.Track(e); } public void SubmittChanges() { _repository.Save(this.GetChanges()); } } How are these two elements related? UOW tracks the elements that needs be changed, and repository contains the logic to persist those changes, but... who call who? Does the last make more sense? Also, who manages the connection? If several operations have to be done in the repository, I think using the same connection and even transaction is more sound, so maybe put the connection object inside the UOW and this one inside the repository makes sense as well. Cheers

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• How can I fix my WRT54GL's constant crashing?

  - by Aarthi

  I have a Linksys WRT54GL wireless router (the old blue-and-black) whose underside indicates it is Version 2. I've noticed that, on wireless mode, if I am on a Skype call or in a Google Hangout, the wireless aspect will crash completely. In addition, if I am connected via an ethernet cord, my quality (that is, how my voice is received) tanks very quickly. I suspect this is due, in part, to my internet connectivity itself (I'm on Comcast instead of Verizon FiOS, as I'd prefer) but I'd like to stop my wireless router's wireless capability from crashing. I considered a firmware upgrade, but it looks to me as if I am upgraded. Short of manually running ethernet all over my house, I'm not sure what to do. How can I solve my wireless router's issues? If the answer is "buy a new router," then that's valid, as well, in my opinion.

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• Improved Customer Experience, but at what Cost?

  - by Tony Berk

  We can all probably agree that improving your customers' experience is a good thing. But a key question many people are asking is will it help your organization and, in particular, what are the financial benefits?That's a good question, especially when companies ARE experiencing phenomenal return on investment (ROI). Of course, there are many factors that impact ROI or other measures of success, but we'd like to share some success stories as examples of customer experience in action and delivering positive results. If you would like to learn more about the economics of customer experience, see Brian Curran's presentation at the Oracle Customer Experience Summit last month. In this series of blog posts, we'll share actual customer stories. Today's example is Dell, which uses Oracle Real-Time Decisions (RTD) and Siebel CRM as part of their customer experience portfolio to better understand their customers' needs and wants and provide consistent interactions. Regular readers of this blog are probably familiar with Siebel, but RTD may be new to many of you. RTD is a complete decision management solution that delivers real-time decisions and recommendations and automatically renders decisions within a business process to create tailored messaging for every customer interaction.What does that mean? In the video below, Dell describes how customer experience is important not just for one interaction channel, but across all "vehicles." RTD is helping Dell understand customer behavior and communicate with the customer in a more relevant manner, across all communication  or interaction channels including sales and service call centers, email marketing and online. Dell continues to expand use of RTD because the benefits are showing up in sales, service and marketing results including 19% increase in close rates, faster issue resolution and 40% improvement in revenue per click in email marketing. Click here, to learn more about Oracle Customer Experience and stay tuned for more customer spotlights.

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• Perth's ADF Community Event now an open invite

  - by Chris Muir

  Yesterday saw the next ADF Community Event in Perth, and as promised we grew from 15 to 25 attendees (which is going to cause a bit of a problem soon if we keep growing as we're going to run out of powerpoints for laptops). This bimonthly enjoyed presentations from Matthew Carrigy from the Dept of Finance WA on the ADF UI Shell, a small presentation from me about how Fusion Apps uses ADF, and a hands on based on programatically extending ADF BC to call external web services.  For Matt, his first presentation to a user group, with two live demos, all kudos to him for making it look smooth (for the record I hate live demos, I always break something) - thank you Matt! We've already lined up our speakers for the next event in November, and will be inviting yet more customers to this event.  However the event will now move to an open invite, so if you'd like your staff to attend please let me know by emailing chris DOT muir AT oracle DOT com. Alternatively I've had a fair few requests now for an "Intro to ADF" 1 day session so I'll consider this soon.  Certainly if you're interested let me know as this will help organize the event earlier rather than later. 

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• GWB | Comment Spam On The Rise

  - by Geekswithblogs Administrator

  I don’t know a member on Geekswithblogs.net that is not frustrated with the amount of spam they get. It is a major problem that we have been dealing with for 6+ years and trying to come up with new ways to fight. As spammers get smarter, we have to continue to upgrade the tools we use to combat it. Just like any spam filter, sometimes good comments will get caught up. This has been a huge concern for some bloggers causing us to tame what we call spam and not spam. So this post is here just to state we know the spam problem is like a wave, sometimes it is not so bad, other times it gets worse. Right now it is worse. One measure we will take is a requirement for CAPTCHA soon if it continues since most members don’t clean up their spam via the admin tools (which are not the best tools, I know). Also I want to solicit a better approach from the members, what would you like the spam interface on GWB to be like? Be realistic cause we all want “Zero Spam, Good Comment live”. Related Tags: Geekswithblogs.net, Spam

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• Having trouble with projection matrix, need help

  - by Mr.UNOwen

  I'm having trouble with what appears to be the projection matrix. Given a wide enough of a screen, when a cube is on the left and right most edge, the left or right wall will appear stretched to the point that the front face is 1/10 the width of the side. So I do update the screen ratio along with the projection matrix and view port on screen resize, am I safe to assume all the trouble is from the matrix class? Also the cube follows the mouse, but it's only vertically aligned and ahead of the mouse when going left or right from the center of the screen. Perspective function call: * setPerspective * * @param fov: angle in radians * @param aspect: screen ratio w/h * @param near: near distance * @param far: far distance **/ void APCamera::setPerspective(GMFloat_t fov, GMFloat_t aspect, GMFloat_t near, GMFloat_t far) { GMFloat_t difZ = near - far; GMFloat_t *data; mProjection->clear(); //set to identity matrix data = mProjection->getData(); GMFloat_t v = 1.0f / tan(fov / 2.0f); data[_AP_MAA] = v / aspect; data[_AP_MBB] = v; data[_AP_MCC] = (far + near) / difZ; data[_AP_MCD] = -1.0f; data[_AP_MDD] = 0.0f; data[_AP_MDC] = 2.0f * far * near/ difZ; mRatio = aspect; mInvProjOutdated = true; mIsPerspective = true; } and... #define _AP_MAA 0 #define _AP_MAB 1 #define _AP_MAC 2 #define _AP_MAD 3 #define _AP_MBA 4 #define _AP_MBB 5 #define _AP_MBC 6 #define _AP_MBD 7 #define _AP_MCA 8 #define _AP_MCB 9 #define _AP_MCC 10 #define _AP_MCD 11 #define _AP_MDA 12 #define _AP_MDB 13 #define _AP_MDC 14 #define _AP_MDD 15

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• What is the difference between Callback<T> and Java 8's Supplier<T>?

  - by Dan Pantry

  I've been switching over to Java from C# after some recommendations from some over at CodeReview. So, when I was looking into LWJGL, one thing I remembered was that every call to Display must be executed on the same thread that the Display.create() method was invoked on. Remembering this, I whipped up a class that looks a bit like this. public class LwjglDisplayWindow implements DisplayWindow { private final static int TargetFramesPerSecond = 60; private final Scheduler _scheduler; public LwjglDisplayWindow(Scheduler displayScheduler, DisplayMode displayMode) throws LWJGLException { _scheduler = displayScheduler; Display.setDisplayMode(displayMode); Display.create(); } public void dispose() { Display.destroy(); } @Override public int getTargetFramesPerSecond() { return TargetFramesPerSecond; } @Override public Future<Boolean> isClosed() { return _scheduler.schedule(() -> Display.isCloseRequested()); } } While writing this class you'll notice that I created a method called isClosed() that returns a Future<Boolean>. This dispatches a function to my Scheduler interface (which is nothing more than a wrapper around an ScheduledExecutorService. While writing the schedule method on the Scheduler I noticed that I could either use a Supplier<T> argument or a Callable<T> argument to represent the function that is passed in. ScheduledExecutorService didn't contain an override for Supplier<T> but I noticed that the lambda expression () -> Display.isCloseRequested() is actually type compatible with both Callable<bool> and Supplier<bool>. My question is, is there a difference between those two, semantically or otherwise - and if so, what is it, so I can adhere to it?

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