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  • Monogame - Shader parameters missing

    - by Layoric
    I am currently working on a simple game that I am building in Windows 8 using MonoGame (develop3d). I am using some shader code from a tutorial (made by Charles Humphrey) and having an issue populating a 'texture' parameter. I'm not well versed writing shaders, so this might be caused by a more obvious problem. I have debugged through MonoGame's Content processor to see how this shader is being parsed, all the non 'texture' parameters are there and look to be loading correctly. Shader code below #include "PPVertexShader.fxh" float2 lightScreenPosition; float4x4 matVP; float2 halfPixel; float SunSize; texture flare; sampler2D Scene: register(s0){ AddressU = Clamp; AddressV = Clamp; }; sampler Flare = sampler_state { Texture = (flare); AddressU = CLAMP; AddressV = CLAMP; }; float4 LightSourceMaskPS(float2 texCoord : TEXCOORD0 ) : COLOR0 { texCoord -= halfPixel; // Get the scene float4 col = 0; // Find the suns position in the world and map it to the screen space. float2 coord; float size = SunSize / 1; float2 center = lightScreenPosition; coord = .5 - (texCoord - center) / size * .5; col += (pow(tex2D(Flare,coord),2) * 1) * 2; return col * tex2D(Scene,texCoord); } technique LightSourceMask { pass p0 { VertexShader = compile vs_4_0 VertexShaderFunction(); PixelShader = compile ps_4_0 LightSourceMaskPS(); } } I've removed default values as they are currently not support in MonoGame and also changed ps and vs to v4 instead of 2. Could this be causing the issue? As I debug through 'DXConstantBufferData' constructor (from within the MonoGameContentProcessing project) I find that the 'flare' parameter does not exist. All others seem to be getting created fine. Any help would be appreciated.

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  • Technical development decision for my newly established software company

    - by test test
    I have a new software company where I am planning to develop CRM system. So I have settled down on the technological approach I am going to use:- I will use an open source Java-based CRM engine. I will use a third party reporting tool named JasperReports for providing reports capabilities for the CRM. I will develop the interface and any customization which the customer might ask for using asp.net mvc framework since my knowledge and experience are based on asp.net. And I will use the CRM API to integrate my asp.net web application with the Java-based CRM. I have developed a simple demo which integrate these three main components (CRM engine, asp.net application and the reporting tool) and they worked well. But I am afraid of the following risk that I might face if I go with the above approach: I should hire developers with different skills and experience: Developers with Java skills to be able to modify the Java-based CRM and writing plug-ins -when needed- to extend the CRM capabilities. Other developers with asp.net skills to be able to build the application such as application forms, the portal from where users will be able to start the CRM processes, searching capabilities, etc. So might the above point raise some risks when I start hiring a new team and start building the CRM application, OR I am on the right track at this early stage?

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  • How do I make complex SQL queries easier to write?

    - by DragonLord
    I'm finding it very difficult to write complex SQL queries involving joins across many (at least 3-4) tables and involving several nested conditions. The queries I'm being asked to write are easily described by a few sentences, but can require a deceptive amount of code to complete. I'm finding myself often using temporary views to write these queries, which seem like a bit of a crutch. What tips can you provide that I can use to make these complex queries easier? More specifically, how do I break these queries down into the steps I need to use to actually write the SQL code? Note that I'm the SQL I'm being asked to write is part of homework assignments for a database course, so I don't want software that will do the work for me. I want to actually understand the code I'm writing. More technical details: The database is hosted on a PostgreSQL server running on the local machine. The database is very small: there are no more than seven tables and the largest table has less than about 50 rows. The SQL queries are being passed unchanged to the server, via LibreOffice Base.

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  • My first encounter with SmartAssembly

    - by Peter Larsson
    Let me start by writing I am a supreme VB6 programmer, but I have very little experience with VB.Net, so I think I still need some more time learning SmartAssembly. SmartAssembly make obfuscating and merging dll files a piece of cake! With it's simple, straight forward and clean GUI I did make my tests work. With other obfuscators like Xenocode, Salamander etc which lets you (and in some cases forces you) control more advanced settings, you really have to know what you are doing. Especially when it comes to protecting code that uses external dependencies. My most annoying experience is that if you start checking radio buttons and activating different obfuscating features in SmartAssembly, you will end up breaking your working code as well, if you like me is not that experienced and don't know what you’re doing. SmartAssembly have some troubleshooting information on their website which explains why the application will fail in some scenarios. So why not extend these checks in some deeper analyzing stage on the dll's? By doing that I think more people could get fully functional dll's out of the box instead of trying different settings and then test the protected dll and see if it's working or not. //Peter

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  • 2D Side Scrolling game and "walk over ground" collision detection

    - by Fire-Dragon-DoL
    The question is not hard, I'm writing a game engine for 2D side scrolling games, however I'm thinking to my 2D side scrolling game and I always come up with the problem of "how should I do collision with the ground". I think I couldn't handle the collision with ground (ground for me is "where the player walk", so something heavily used) in a per-pixel way, and I can't even do it with simple shape comparison (because the ground can be tilted), so what's the correct way? I'know what tiles are and i've read about it, but how much should be big each tile to not appear like a stairs?Are there any other approach? I watched this game and is very nice how he walks on ground: http://www.youtube.com/watch?v=DmSAQwbbig8&feature=player_embedded If there are "platforms" in mid air, how should I handle them?I can walk over them but I can't pass "inside". Imagine a platform in mid air, it allows you to walk over it but limit you because you can't jump in the area she fits Sorry for my english, it's not my native language and this topic has a lot of keywords I don't know so I have to use workarounds Thanks for any answer Additional informations and suggestions: I'm doing a game course in this period and I asked them how to do this, they suggested me this approach (a QuadTree): -All map is divided into "big nodes" -Each bigger node has sub nodes, to find where the player is -You can find player's node with a ray on player position -When you find the node where the player is, you can do collision check through all pixels (which can be 100-200px nothing more) Here is an example, however i didn't show very well the bigger nodes because i'm not very good with photoshop :P How is this approach?

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  • WPF or WinForms for Game Development and learning resources?

    - by Stephen Lee Parker
    I'm looking to create a game framework for my own personal use... I want to use WPF, but I'm unsure if that is a wise choice... The games I will be writing should not require high performance graphics, so I am hoping to build on native classes... I do not want to rely on external DLL's unless I generate them myself. The games will be for young children, say 4 to 8. Most will be learning puzzles or simple shooters. The most advanced will be a platform game (non-scrolling screen like the old Atari Miner 2049er game). I think I know how to write something like the old Atari Chopper Command (partially written and my 4 year old loves it, but I used WinForms and GDI), Pac-Man, Tetris, Astroids, Space Invaders, Slider Puzzle, but I do not really know how to write the platform game... In my mind, I'm getting caught in collision detection and how to make a character jump and how to make a character walk up a slope or steps... Can anyone point me to information on developing a platform game in C#? Would you suggest WinForms or WPF for game development? I'm not looking for great graphics and speed, just entertaining game play...

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  • Frederick .NET User Group March Meeting

    - by John Blumenauer
    FredNUG is pleased to announce that we have an excellent speaker lined up for March.  On March 16th, we’ll start with pizza and social networking at 6:30 PM.  Then, starting at 7 PM, Roberto Hernandez will present “Ramp up on ASP.NET MVC2!” The scheduled agenda is:   6:30 PM - 7:00 PM - Pizza/Social Networking/Announcements 7:00 PM - 8:30 PM - Main Topic: Ramp up on ASP.NET MVC2! with Roberto Hernandez  Main Topic Description:  Learn about the new features in the ASP.NET MVC2 Beta release. Learn how Areas, Templates, Validation, Model Metadata, and Strongly typed URL Helpers will improve the development experience on the ASP.NET MVC stack. Speaker Bio: Roberto Hernandez is currently a senior consultant for Excella Consulting, who has been designing and writing software using Microsoft technology for the past the 10 years. Originally from the Dominican Republic, Roberto is one of the founders of the NetaWeb community, the leading .NET developers community in the region. You can read more about Roberto at his blog at http://www.overridethis.com.            8:30 PM - 8:45 PM – RAFFLE! Please join us and get involved in our .NET developers community!

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  • Upload to PPA succeeded but packages doesn't appear

    - by lorin
    I'm trying to upload packages to my PPA for the first time. I want to use the PPA for customized versions of the OpenStack Compute (nova) project, so I tried to do a test by uploading packages corresponding to the bexar release of this project (lp:nova/bexar), with a new version number and changelog entry. I signed the source packages using my OpenGPG key, which has been uploaded to the ubuntu keyserver: $ dch -v 2011.1-0ubuntu2-isi1 -D lucid "ISI bexar build #1" $ dpkg-buildpackage -s -rfakeroot -tc -D -k4C8A14AB When I tried to upload the files to the repository, it seemed to work (real email obscured): $ dput ppa:lorinh/ppa nova_2011.2~bzr663-1isi1_source.changes Checking signature on .changes gpg: Signature made Fri 11 Feb 2011 03:52:50 PM EST using RSA key ID 4C8A14AB gpg: Good signature from "Lorin Hochstein <lorin@...>" Good signature on /home/lorin/packaging/nova_2011.2~bzr663-1isi1_source.changes. Checking signature on .dsc gpg: Signature made Fri 11 Feb 2011 03:52:44 PM EST using RSA key ID 4C8A14AB gpg: Good signature from "Lorin Hochstein <lorin@...>" Good signature on /home/lorin/packaging/nova_2011.2~bzr663-1isi1.dsc. Uploading to ppa (via ftp to ppa.launchpad.net): Uploading nova_2011.2~bzr663-1isi1.dsc: done. Uploading nova_2011.2~bzr663-1isi1.tar.gz: done. Uploading nova_2011.2~bzr663-1isi1_source.changes: done. However, the packages aren't listed on my PPA page. If I try to upload again, I get the error: $ dput ppa:lorinh/ppa nova_2011.2~bzr663-1isi1_source.changes Package has already been uploaded to ppa on ppa.launchpad.net Nothing more to do for nova_2011.2~bzr663-1isi1_source.changes Am I supposed to do something next? How do I track down what wrong? As of this writing, it's been a day and a half since I've done the upload.

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  • SQL SERVER – DMV sys.dm_exec_describe_first_result_set_for_object – Describes the First Result Metadata for the Module

    - by pinaldave
    Here is another interesting follow up blog post of SQL SERVER – sp_describe_first_result_set New System Stored Procedure in SQL Server 2012. While I was writing earlier blog post I had come across DMV sys.dm_exec_describe_first_result_set_for_object as well. I found that SQL Server 2012 is providing all this quick and new features which quite often we miss  to learn it and when in future someone demonstrates the same to us, we express our surprise on the subject. DMV sys.dm_exec_describe_first_result_set_for_object returns result set which describes the columns used in the stored procedure. Here is the quick example. Let us first create stored procedure. USE [AdventureWorks] GO ALTER PROCEDURE [dbo].[CompSP] AS SELECT [DepartmentID] id ,[Name] n ,[GroupName] gn FROM [HumanResources].[Department] GO Now let us run following two DMV which gives us meta data description of the stored procedure passed as a parameter. Option1: Pass second parameter @include_browse_information as a 0. SELECT * FROM sys.dm_exec_describe_first_result_set_for_object ( OBJECT_ID('[dbo].[CompSP]'),0) AS Table1 GO Option2: Pass second parameter @include_browse_information as a 1. SELECT * FROM sys.dm_exec_describe_first_result_set_for_object ( OBJECT_ID('[dbo].[CompSP]'),1) AS Table1 GO Here is the result of Option1 and Option2. If you see the result, there is absolutely no difference between the results. Both of the resultset are returning column names which are aliased in the stored procedure. Let us scroll on the right side and you will notice that there is clear difference in some columns. You will see in second resultset source_database, Source_schema as well few other columns are reporting original table instead of NULL values. When @include_browse_information result is set to 1 it will provide the columns details of the underlying table. I have just discovered this DMV, I have yet to use it in production code and find out where exactly I will use this DMV. Do you have any idea? Does any thing comes up to your mind where this DMV can be helpful. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL DMV, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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  • How do I refresh Disk Utility?

    - by detly
    I do a lot of live system building, which eventually involves imaging a USB drive with the built binary image: dd if=binary.img of=/dev/sdX sync ...where /dev/sdX is a USB drive. As part of my workflow, I like to have Ubuntu's Disk Utility open so I can verify the drive letter and unmount anything that gets mounted automatically. I also use it to create extra partitions for persistence. The trouble is, after writing the image to the device — and even after the sync operation — Disk Utility doesn't show the new partition. It just shows free space. GParted sees it and fdisk sees it. Even after closing and opening Disk Utility, it still shows only free space. If I click "Safe Removal" and physically unplug and replug the USB drive, Disk Utility will then see the partition. Why do I need to remove and re-insert the drive for Disk Utility to see the partitions on it? Can I force Disk Utility to update its information without needing to do this? (using Disk Utility 3.0.2 under Ubuntu 11.10.)

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  • Step by Step screencasts to do Behavior Driven Development on WCF and UI using xUnit

    - by oazabir
    I am trying to encourage my team to get into Behavior Driven Development (BDD). So, I made two quick video tutorials to show how BDD can be done from early requirement collection stage to late integration tests. It explains breaking user stories into behaviors, and then developers and test engineers taking the behavior specs and writing a WCF service and unit test for it, in parallel, and then eventually integrating the WCF service and doing the integration tests. It introduces how mocking is done using the Moq library. Moreover, it shows a way how you can write test once and do both unit and integration tests at the flip of a config setting. Watch the screencast here: Doing BDD with xUnit, Subspec and on a WCF Service  Warning: you might hear some noise in the audio in some places. Something wrong with audio bit rate. I suggest you let the video download for a while and then play it. If you still get noise, go back couple of seconds earlier and then resume play. It eliminates the noise.  The next video tutorial is about doing BDD to do automated UI tests. It shows how test engineers can take behaviors and then write tests that tests a prototype UI in isolation (just like Service Contract) in order to ensure the prototype conforms to the expected behaviors, while developers can write the real code and build the real product in parallel. When the real stuff is done, the same test can test the real stuff and ensure the agreed behaviors are satisfied. I have used WatiN to automate UI and test UI for expected behaviors. Doing BDD with xUnit and WatiN on a ASP.NET webform Hope you like it!

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  • Learning Objective-C for iPad/iPhone/iPod Development

    - by Jeff Julian
    I am learning how to write apps for the iPad/iPhone/iPod!  Why, well several reasons.  One reason, I have 5 devices in my house on the platform.  I had an iPad and iPhone, Michelle has an iPhone, and each of the kids have iPod Touches.  They are excellent devices for life management, entertainment, and learning.  I am amazed at how well the kids pick up on it and how much it effects the way they learn.  My two year old knows how to use it better than any other device we own and she is learning new words and letters so quickly. Because of this saturation at home, it would be fun to write some apps my family could use.  Some games to bring the hobby of development back into my life.  Second reason is we want to have a Geekswithblogs app for the iPhone and iPad.  We are not sure if it is purely informational (blog posts and tweets) or if members want to be able to publish from the app.  Creating a blog editor would be tough stuff, but could be just the right challenge. There are so many more reasons, but the last one that really makes me excited is that it is a new domain of development where I get excited when I think about writing apps.  That excitement level where I want to see if there are User Groups and if we are just watching TV, to break out the MBP and start working on it.  That excitement level where I could really read a development book cover to cover and not just use as a reference.  I really do like this feeling. Who knows how long this will last and I am definitely not leaving .NET.  Microsoft software will always be my main focus, but for the time, my hobby is changing and I am getting excited about development again.   Technorati Tags: Apple,iPad Development,Objective-C,New Frontiers Image: Courtesy of Apple

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  • New training on Power Pivot with recorded video courses

    - by Marco Russo (SQLBI)
    I and Alberto Ferrari started delivering training on Power Pivot in 2010, initially in classrooms and then also online. We also recorded videos for Project Botticelli, where you can find content about Microsoft tools and services for Business Intelligence. In the last months, we produced a recorded video course for people that want to learn Power Pivot without attending a scheduled course. We split the entire Power Pivot course training in three editions, offering at a lower price the more introductive modules: Beginner: introduces Power Pivot to any user who knows Excel and want to create reports with more complex and large data structures than a single table. Intermediate: improves skills on Power Pivot for Excel, introducing the DAX language and important features such as CALCULATE and Time Intelligence functions. Advanced: includes a depth coverage of the DAX language, which is required for writing complex calculations, and other advanced features of both Excel and Power Pivot. There are also two bundles, that includes two or three editions at a lower price. Most important, we have a special 40% launch discount on all published video courses using the coupon SQLBI-FRNDS-14 valid until August 31, 2014. Just follow the link to see a more complete description of the editions available and their discounted prices. Regular prices start at $29, which means that you can start a training with less than $18 using the special promotion. P.S.: we recently launched a new responsive version of the SQLBI web site, and now we also have a page dedicated to all videos available about our sessions in conferences around the world. You can find more than 30 hours of free videos here: http://www.sqlbi.com/tv.

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  • My experience working with Teradata SQL Assistant

    - by Kevin Shyr
    Originally posted on: http://geekswithblogs.net/LifeLongTechie/archive/2014/05/28/my-experience-working-with-teradata-sql-assistant.aspx To this date, I still haven't figure out how to "toggle" between my query windows. It seems like unless I click on that "new" button on top, whatever SQL I generate from right-click just overrides the current SQL in the window. I'm probably missing a "generate new sql in new window" setting The default Teradata SQL Assistant doesn't execute just the SQL query I highlighted. There is a setting I have to change first. I'm not really happy that the SQL assistant and SQL admin are different app. Still trying to get used to the fact that I can't quickly look up a table's keys/relationships while writing query. I have to switch between windows. LOVE the execution plan / explanation. I think that part is better done than MS SQL in some ways. The error messages can be better. I feel that Teradata .NET provider sends smaller query command over than others. I don't have any hard data to support my claim. One of my query in SSRS was passing multi-valued parameters to another query, and got error "Teradata 3577 row size or sort key size overflow". The search on this error says the solution is to cast result column into smaller data type, but I found that the problem was that the parameter passed into the where clause could not be too large. I wish Teradata SQL Assistant would remember the window size I just adjusted to. Every time I execute the query, the result set, query, and exec log auto re-adjust back to the default size. In SSMS, if I adjust the result set area to be smaller, it would stay like that if I execute query in the same window.

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  • Where to Perform Authentication in REST API Server?

    - by David V
    I am working on a set of REST APIs that needs to be secured so that only authenticated calls will be performed. There will be multiple web apps to service these APIs. Is there a best-practice approach as to where the authentication should occur? I have thought of two possible places. Have each web app perform the authentication by using a shared authentication service. This seems to be in line with tools like Spring Security, which is configured at the web app level. Protect each web app with a "gateway" for security. In this approach, the web app never receives unauthenticated calls. This seems to be the approach of Apache HTTP Server Authentication. With this approach, would you use Apache or nginx to protect it, or something else in between Apache/nginx and your web app? For additional reference, the authentication is similar to services like AWS that have a non-secret identifier combined with a shared secret key. I am also considering using HMAC. Also, we are writing the web services in Java using Spring. Update: To clarify, each request needs to be authenticated with the identifier and secret key. This is similar to how AWS REST requests work.

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  • I thought everyone did it like this – Training Session Code Management

    - by Fatherjack
    One of an occasional series of blogs about things that I do that perhaps others don’t. From very early on in my dealings with SQL Server Management Studio I started using Solutions and Projects. This means that I started using them when writing sessions and it wasn’t until speaking with someone at PASS Summit 2013 that I found out that this was a process that was unheard of by some people. So, here we go, a run through how I create and manage code and other documents that I use in presentations. For people unsure what solutions and projects are; • Solution – a container for one or more projects. • Project – a container for files, .sql files are grouped as Queries, all other files are stored as Misc. How do I start? Open Management Studio as normal, and then click File | New and select Project This will bring up the New Project dialog box and you can select/add details as necessary in the places indicated. If this is the first project you are creating then be sure to select the Create directory for solution check box (4). If know in advance that you are going to have more than one project in the solution then you may want to edit the Solution name (3) as by default it will take the name of the project that you enter at (2). This will lead you to the following folder structure (depending on the location that you chose in 3) above. In SSMS you need to turn on the Solution Explorer, either via the View menu or pressing Ctrl + Alt + L                   This will bring up a dockable window that will let you quickly access the files that you choose to include in the Solution.                     Can we get to work and write some code yet please? Yes, we can. As with many Microsoft products there are several ways to go about this, let’s look at the easiest way when creating new code. When writing a presentation I usually start from the position we are currently in – a brand new solution and project with no code. Later on we will look at incorporating existing code files into the Project where we need it. Right-click on the Project name and choose Add New Query           As soon as you click this you will be prompted to select the sql server that you want to connect to and once you have done that you will have your new query open in the text editor and the Solution Explorer will now look like this, showing your server connection and your new query.               And the Project folder will look like this         Now once you have written your code don’t press save, choose Save As and give the code a better name than QueryX.sql. SSMS will interpret this as a request to rename Query1 and your Project and the Project folder will show that SQLQuery1.sql no longer exists but there is now a file named as you requested. If you happen to click save in error then right-click the query in the project and choose rename.               You can then alter the name as you like, even when open in the SSMS text editor, and the file will be renamed. When creating a set of scripts for a presentation I name files with a numeric prefix so that when they are sorted by name they are in the order that I need to use them during the session. I love this idea but I’ve got loads of existing scripts I want to put in Projects Excellent, adding existing files to a project is easy, let’s consider that you have query files in your My Documents folder and you want to bring them into the Project we have just created. Right-click on the Project and choose Add | Existing Item           Navigate to the location of your chosen file and select it. The file will open in SSMS text editor and the Project will be updated to show that the selected query is now part of your project. If you look in Windows Explorer you will see that the query file has been copied into the Project folder, the original file still remains in your My Documents (or wherever it existed). I’ll leave it as an exercise for the reader to explore creating further Projects within a solution but will happily answer questions if you get into difficulties. What other advantages do I get from this? Well, as all your code is neatly in one Solution folder and the folder contains only files that are pertinent to the session you are presenting then it makes it very easy to share this code, simply copy the whole folder onto a USB stick, Blog, FTP location, wherever you choose and it’s all there in one self-contained parcel. You don’t have to limit yourself to .sql query files, you can add any sort of document via the Add Existing Item method, just try it out. Right-click on the protect and choose Add | Existing Item           Change the file type filter.                       You can multi select items here using Ctrl as you click each item you want. When you are done, click the Add button and the items will be brought into your project.                 Again, using this process means the files are copied into the project folder, leaving you original files untouched in their original location. Once they are here you can double click them in the SSMS Solution Explorer to open them, for files with a specific file type then the appropriate application will be launched – ie Word, Excel etc. However, if the files are something that the SSMS Text editor can display then they will open in a tab in SSMS. Try it out with a text file or even a PS1 file … This sounds excellent but what do I need to watch out for? One big thing to consider when working like this is the version of SSMS that you are using. There is something fundamentally different between the different versions in the way that the project (.ssmssqlproj) and solution (.sqlsuo and .ssmssln) files are formatted. If you create a solution in an older version of SSMS and then open it in a newer version you will be given the option to upgrade it. Once you do this upgrade then the older version of SSMS will not be able to open the solution any more. Now this ranks as more of an annoyance than disaster as the files within the projects are not affected in any way, you would just have to delete the files mentioned and recreate the solution in the older version again. Summary So, here we have seen how using SSMS Projects and Solutions can help keep related code files (and other document types) together in a neat structure so that they can be quickly navigated during a presentation and it also makes it incredibly simple to distribute your code and share it with others. I hope this is of use to you and helps you bring more order into your sql files, whether you are a person that does technical presentations or not, having your code grouped and managed can make for a lot of advantages as your code library expands.  

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  • wired connection not working in ubuntu 12.04 on lenovo G580 laptop

    - by shravankumar
    I found solution in http://www.zyxware.com/articles/2680/solved-wired-connection-eth0-not-detected-in-ubuntu-12-04 I downloaded compact-wireless-2012-07-03-p.tar.bz2 Here the steps i followed along with output 1. shravankumar@shravankumar-Lenovo-G580:~/Desktop/compat-wireless-2012-07-03-p$ scripts/driver-select alx Output: Processing new driver-select request... Backup exists: Makefile.bk Backup exists: Makefile.bk Backup exists: drivers/net/ethernet/broadcom/Makefile.bk Backup exists: drivers/net/ethernet/atheros/Makefile.bk Backup exists: Makefile.bk Backup exists: Makefile.bk Backup exists: drivers/net/ethernet/broadcom/Makefile.bk 2.shravankumar@shravankumar-Lenovo-G580:~/Desktop/compat-wireless-2012-07-03-p$ make output: make -C /lib/modules/3.2.0-23-generic/build M=/home/shravankumar/Desktop/compat-wireless-2012-07-03-p modules make[1]: Entering directory `/usr/src/linux-headers-3.2.0-23-generic' scripts/Makefile.build:44: /home/shravankumar/Desktop/compat-wireless-2012-07-03-p/drivers/net/ethernet/atheros/alx/Makefile: No such file or directory make[4]: *** No rule to make target `/home/shravankumar/Desktop/compat-wireless-2012-07-03-p/drivers/net/ethernet/atheros/alx/Makefile'. Stop. make[3]: *** [/home/shravankumar/Desktop/compat-wireless-2012-07-03-p/drivers/net/ethernet/atheros/alx] Error 2 make[2]: *** [/home/shravankumar/Desktop/compat-wireless-2012-07-03-p/drivers/net/ethernet/atheros] Error 2 make[1]: *** [_module_/home/shravankumar/Desktop/compat-wireless-2012-07-03-p] Error 2 make[1]: Leaving directory `/usr/src/linux-headers-3.2.0-23-generic' make: *** [modules] Error 2 3. hravankumar@shravankumar-Lenovo-G580:~/Desktop/compat-wireless-2012-07-03-p$ make install output: FATAL: Could not open /lib/modules/3.2.0-23-generic/modules.dep.temp for writing: Permission denied make: *** [uninstall] Error 1 4. shravankumar@shravankumar-Lenovo-G580:~/Desktop/compat-wireless-2012-07-03-p$ modeprobe alx output: No command 'modeprobe' found, did you mean: Command 'modprobe' from package 'module-init-tools' (main) modeprobe: command not found I am new to Ubuntu ,Please help me. Thanks in advance

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  • Sprite and Physics components or sub-components?

    - by ashes999
    I'm taking my first dive into creating a very simple entity framework. The key concepts (classes) are: Entity (has 0+ components, can return components by type) SpriteEntity (everything you need to draw on screen, including lighting info) PhysicsEntity (velocity, acceleration, collision detection) I started out with physics notions in my sprite component, and then later removed them to a sub-component. The separation of concerns makes sense; a sprite is enough information to draw anything (X, Y, width, height, lighting, etc.) and physics piggybacks (uses the parent sprite to get X/Y/W/H) while adding physics notions of velocity and collisions. The problem is that I would like collisions to be on an entity level -- meaning "no matter what your representation is (be it sprites, text, or something else), collide against this entity." So I refactored and redirected collision handling from entities to sprite.physics, while mapping and returning the right entity on physics collisions. The problem is that writing code like this.GetComponent<SpriteComponent>().physics is a violation of abstraction. Which made me think (this is the TLDR): should I keep physics as a separate component from sprites, or a sub-component, or something else? How should I share data and separate concerns?

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  • Why use try … finally without a catch clause?

    - by Nick Rosencrantz
    The classical way to program is with try / catch but when is it appropriate to use try without catch? In Python the following appears legal and can make sense: try: #do work finally: #do something unconditional But we didn't catch anything. Similarly one could think in Java it would be try { //for example try to get a database connection } finally { //closeConnection(connection) } It looks good and suddenly I don't have to worry about exception types etc. But if this is good practice, when is it good practice? Or reasons why this is not good practice or not legal (I didn't compile the source I'm asking about and it could be a syntax error for Java but I checked that the Python surely compiles.) A related problem I've run into is that I continue writing the function / method and at the end I must return something and I'm in a place which should not be reached and it must be a return point so even if I handle the exceptions above I'm still returning null or an empty string at some point in the code which should not be reached, often the end of the method / function. I've always managed to restructure to code so that I don't have to return null since that absolutely appears to look like less than good practice.

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  • DIVIDE vs division operator in #dax

    - by Marco Russo (SQLBI)
    Alberto Ferrari wrote an interesting article about DIVIDE performance in DAX. This new function has been introduced in SQL Server Analysis Services 2012 SP1, so it is available also in Excel 2013 (which still doesn’t have other features/fixes introduced by following Cumulative Updates…). The idea that instead of writing: IF ( Sales[Quantity] <> 0, Sales[Amount] / Sales[Quantity], BLANK () ) you can write: DIVIDE ( Sales[Amount], Sales[Quantity] ) There is a third optional argument in DIVIDE that defines the result in case the denominator (second argument) is zero, and by default its value is BLANK, so I omitted the third argument in my example. Using DIVIDE is very important, especially when you use a measure in MDX (for example in an Excel PivotTable) because it raise the chance that the non empty evaluation for the result is evaluated in bulk mode instead of cell-by-cell. However, from a DAX point of view, you might find it’s better to use the standard division operator removing the IF statement. I suggest you to read Alberto’s article, because you will find that an expression applying a filter using FILTER is faster than using CALCULATE, which is against any rule of thumb you might have read until now! Again, this is not always true, and depends on many conditions – trying to simplify, we might say that for a simple calculation, the query plan generated by FILTER could be more efficient – but, as usual, it depends, and 90% of the times using FILTER instead of CALCULATE produces slower performance. Do not take anything for granted, and always check the query plan when performance are your first issue!

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  • Securing Back End API for Mobile Applications

    - by El Guapo
    I have an application that I am writing for both iOS and Android; this application will be served by a ReSTFUL API running on a cluster of servers on "the internets". I am curious how the rest of the world is going about securing their APIs so only specific applications running on iOS or Android can use these APIs. I could go the same route as other OAuth providers by providing a key/secret combination (2-legged OAuth), however, what do I do if I ever have to change these keys??? Do I create a new key/secret for every person that downloads the app??? The application is a social-based game that will allow the user to interact with other "participants" in the game based on location, achievements, etc. The API will provide the following functions: -Questions, Quests, etc -Profile Management -User Interaction -Possible Social Interaction Once the app gains traction I plan on opening up the API ala Facebook, Twitter, etc. Which is easy enough, I plan on implementing an OAuth Server and whatnot. However, I want to make sure, during this phase, that only people who are using the application can access and use the API.

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  • Computer Science Degrees and Real-World Experience

    - by Steven Elliott Jr
    Recently, at a family reunion-type event I was asked by a high school student how important it is to get a computer science degree in order to get a job as a programmer in lieu of actual programming experience. The kid has been working with Python and the Blender project as he's into making games and the like; it sounds like he has some decent programming chops. Now, as someone that has gone through a computer science degree my initial response to this question is to say, "You absolutely MUST get a computer science degree in order to get a job as a programmer!" However, as I thought about this I was unsure as to whether my initial reaction was due in part to my own suffering as a CS student or because I feel that this is actually the case. Now, for me, I can say that I rarely use anything that I learned in college, in terms of the extremely hard math, algorithms, etc, etc. but I did come away with a decent attitude and the willingness to work through tough problems. I just don't know what to tell this kid; I feel like I should tell him to do the CS degree but I have hired so many programmers that majored in things like English, Philosophy, and other liberal arts-type degrees, even some that never went to college. In fact my best developer, falls into this latter category. He got started writing software for his church or something and then it took off into a passion. So, while I know this is one of those juicy potential down vote questions, I am just curious as to what everyone else thinks about this topic. Would you tell a high school kid about this? Perhaps if he/she already knows a good deal of programming and loves it he doesn't need a CS degree and could expand his horizons with a liberal arts degree. I know one of the creators of the Django web framework was a American Literature major and he is obviously a pretty gifted developer. Anyway, thanks for the consideration.

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  • Ask the Readers: Which Google Services Do You Use?

    - by Asian Angel
    Nearly everyone uses at least one of Google’s services while browsing each day. What we want to know this week is which Google services do you use? Image by adria.richards Google offers a multitude of services such as e-mail, calendar, and docs to help you manage your online life. Some of you may only use a few of the available services while others are power users. A fair number of businesses and schools have also switched over to Google apps and services for their organization. Whether it is at home, work, or both Google has become a part of our daily lives. Being able to access everything in one place can be extremely useful but equally frustrating if Google’s services experience any downtime. Another concern for some people is the issue of privacy over having so much information stored by a single company. Ultimately the final decision lies with you. Which Google services do you use at home or at work? Let us know in the comments! Similar Articles Productive Geek Tips Access Your Favorite Google Services in Chrome the Easy WayFinding RSS Subscriber Counts Through Apache LogsQuick and Easy Access to Your Favorite Google Services with GButtsAsk the Readers: Which Search Engine Do You Use?A Few Things I’ve Learned from Writing at How-To Geek TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips HippoRemote Pro 2.2 Xobni Plus for Outlook All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server Identify Fonts using WhatFontis.com Windows 7’s WordPad is Actually Good Greate Image Viewing and Management with Zoner Photo Studio Free Windows Media Player Plus! – Cool WMP Enhancer Get Your Team’s World Cup Schedule In Google Calendar Backup Drivers With Driver Magician

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  • What are the advantages and disadvantages to using your real name online?

    - by Jon Purdy
    As a programmer, do you see any professional or other advantage in using your real name in online discourse, versus an invented handle? I've always gone by a single username and had my real name displayed whenever possible, for a few reasons: My interests online are almost exclusively professional and aboveboard. It constructs a search-friendly public log of all of my work, everywhere. If someone wants to contact me, there are many ways to do it. My portfolio of work is all tied to me personally. Possible cons to full disclosure include: If you feel like becoming involved in something untoward, it could be harder. The psychopath who inherits your project can more easily find out where you live. You might be spammed by people who are not worth the precious time that could be better spent writing more of the brilliant software you're famous for. Your portfolio of work is all tied to you personally. It seems, anyway, that a vast majority of StackOverflow users go by invented handles rather than real names. Notable exceptions include the best-known users, who are typically well established in the industry. But how could we ever become legendary rockstar programmers if we didn't get our names out there? Discuss.

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  • Syntax Highlighting for Gherkin (Cucumber Language)

    - by Liam McLennan
    SyntaxHighlighter is the de facto standard for syntax highlighting on the web. I am currently working on a tool for publishing BDD specifications on the web and I want syntax highlighting. Unfortunately, SyntaxHighlighter does not support Gherkin, the language Cucumber and SpecFlow use to define BDD specifications. Writing new language parsers for SyntaxHighlighter is very easy, so I implemented one for Gherkin. Here is what a syntax highlighted Gherkin file looks like: # A comment here Feature: Some terse yet descriptive text of what is desired In order to realize a named business value As a explicit system actor I want to gain some beneficial outcome which furthers the goal @secretlabel Scenario: Some determinable business situation Given some precondition And some other precondition When some action by the actor And some other action And yet another action Then some testable outcome is achieved And something else we can check happens too Like all SyntaxHighlighter brushes to use this one you need to install the brush (shBrushGherkin.js). I have also used a custom theme to get it just the way I wanted it (shThemeGherkin.css). If you would like to use my Gherkin brush you may download the code and example page.

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