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• Is there a consolidated API reference for the Firefox browser.xul?

  - by cxw

  I have used Greasemonkey many times and am stepping up to Firefox extension development. Is there a consolidated reference for the variables, functions, and anything else that is available to overlays on browser.xul? Besides gBrowser, I note from the source that there are at least gNavToolbox, gURLBar, and gNavigatorBundle and would like more information about what services they provide. I have looked through the XUL School and XUL Tutorial on MDN, searched MozillaZine, and browsed the Jetpack documentation without finding anything but references to gBrowser. I have also looked at the code snippets referenced elsewhere (e.g.) and found specifics, but nothing that puts all the information together in one place. Is there such a reference?

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• Setting Up and Running Summary Advisor on an Exalytics Machine (Oracle-by-Example)

  - by Saresh

  If you are running Oracle BI on an Exalytics machine, you can use Summary Advisor to identify the aggregates that will increase query performance. Summary Advisor intelligently recommends an optimal list of aggregate tables based on query patterns that will achieve maximum query performance gain while meeting specific resource constraints. Summary Advisor then generates an aggregate creation script that can be run to create the recommended aggregate tables. Aggregate tables reduce query times by storing precomputed results for queries that include rolled-up data. This tutorial covers steps to set up, configure, and run Summary Advisor on an Exalytics machine using TimesTen database as a target for storing aggregates. You can find the Oracle By Example (OBE) in the Oracle Learning Library (OLL). The content in OLL is available to all customers, partners, and employees.

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• Newbie needs to learn basic file management

  - by Leo in NJ

  I have been using Ubuntu for abut 2 weeks and and still frustrated by simple file operations. I want to find a file called 9.jpg. Every internal command 3-rd party program I have tried also gives me 99.jpg, 999.jpg, lovepotion number9.jpg and a zillion other similar ones. How do you search for an EXACT file name WITHOUT wildcards? This is only my most recent frustration. I'm obviously missing something basic. good tutorial anywhere?

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• How to become more productive in design and programming

  - by aurel

  Usually whenever I see tutorial videos (apart from the main subject) I learn a lot from their working habits, for example; they way they have set up their folders, what shotcuts they use. The best example was (long time a go) I say a jquery video, and half way through the author said something like “by the way you could have a code library” – that’s the only thing I remember from that video (but the author said it as something he assumed people know about) So I was wondering if someone knows any tip or any website which goes other how other professionals work, how they have set up their programming habits to help them not waste time in repetitive tasks.

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• Advice: should I focus on PHP + MySQL, or split my time for more JS and CSS? [closed]

  - by fakaff

  I started learning web development about three months ago (in between working my regular job), and I'm finally starting to get some vague, distant notion of understanding. I find the server-side stuff the most interesting; though I've not gone anywhere near Apache quite yet, which I assume will be necessary at some point. As cool as toying around with visuals and UI is, programming and database stuff inspires me with new ideas and possibilities every minute (I've even bought, on a whim, a wonderfully dry bunch of books on database theory and relational algebra). And whatever CSS or Javascript tutorial I'm doing, it often feels like a distraction from the PHP/MySQL stuff I'd rather be playing with. For someone like me who's just starting out, which is the most advisable course of action? (in terms of being marketable as a programmer): To focus on PHP and SQL stuff exclusively, and only once I master those to diversify my skills. To first learn all three (PHP/MySQL, Javascript, CSS and design) and only once I'm fluent in all three focus on PHP and databases?

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• I need advice on creating animal 3D walk cycles in XNA

  - by Zetar

  I want to purchase a number of 3D models from TurboSquid and animate them in an XNA game. I wrote a lot of games from 1985-1999 and have recently become involved with XNA. Now I would like to port one of my old games to the XBOX. I do have a background in 3D animation; but that was years ago. What is the current method for animating a walk cycle with a 3D model and using it inside XNA? Is there a book, software or a tutorial that you can recommend? Thanks in advance and sorry for such a broad and currently naive question.

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• How to attend one off lectures? [closed]

  - by Senthil Kumaran

  Many times, we come across one-off lectures from famous Computer Scientists. Last year, I came across one by Ms. Barbara Liskov, but I could not go because the University Hall was bit far. Tomorrow, there is one by Dr. Knuth! Now the problem I am facing is, "I don't know much about the material he is going to talk", so I am not sure if I should plan and I fear it will be like going for a "temple". :) What is your advise and general strategy that you have followed whenever you wanted to attend a talk or lecture wherein, it may have been worthwhile if it were an introductory tutorial, but instead you were sitting in an advanced 1 hour lecture by a famous scientist.

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• PHP NOT EXECUTING IN PHP-FPM AND NGINX INSTALLATION

  - by nairobicoder

  I am trying to set up nginx server to run a php app in debian. I followed this tutorial among others. Most seems the same. My recent configuration is based on the link above. When I try to run this php script, <?php phpinfo(); ?> I get the same output on the browser instead of php info result. Kindly someone help me figure out where I went wrong. Note: My error logs are clean,contains details on nginx server start only. Thank you.

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• The DotNetNuke Gallery Module - 7 Video Tutorials

  In this video tutorial we cover the Installation of the DotNetNuke Core Gallery Module and show you how to configure it correctly.We walk you through how to use all of the features in the Gallery module including creating albums, uploading files, bulk uploads, the slideshow, media files, watermarks, templates, and more.The videos contain:Video 1 - Introduction to the DNNGallery Module, Installation and Basic ConfigurationVideo 2 -How to Upload Images and Configure Their SettingsVideo 3 -Creating Gallery Albums and Bulk UploadingVideo 4 - How to Add Files and Albums Using FTP, Adding Music and Changing Permissible Upload TypesVideo 5 - How to Add Video Files, How to Rate Files,Gallery Look and FeelVideo 6 - Changing Feature Settings,Adding Watermarks, Gallery Security RolesVideo 7 - Working withPrivate Galleries and Security Roles, Gallery MaintenanceTotal Time Length: 57minsThe DotNetNuke Gallery Module - 7 Video Tutorials Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Lost /boot partition

  - by s3v3n

  Recently I installed Windows XP on my machine where I had only Ubuntu. The problem is that I had my /boot on a separate, 200 Mb partition at beginning of the hard-disk (the leftmost). Installing windows, it said that it can't write MBR because there's an unknown partition, so I formatted that partition as NTFS, and I could finally get windows installed. Now I want to restore that partition so I can use my Linux keeping both systems. Now should I install grub2 there, or it's OK by restoring partition data? If the first is the correct answer then provide me a little tutorial on installing it. Keep in mind that there was my /boot folder.

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• Which database to use for quickly and pygtk

  - by usher

  I'm writing application using quickly Pygtk and glade. this application should have database connection (such as MySQL) for reading and writing data from the local or outsourcing machine \ server. However, in my machine there is MySQL installed, but when releasing the app it sould be installed on another ubuntu machine, which may not have mysql and moreover not the same database with the required database name and structure.... So my questions are: Is it a good choice using mysql as database 1.2 If not what is? Is it posible to embeding mysql or other database program during the installation from ubuntu software center? 2.2 If it's posible: hwo(any tutorial?) Where to store secure data outside the mysql (or whatever) for conecting the database every time a user launch the application

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• How do I implement powerups for my Breakout clone?

  - by Eva

  I'm making a simple Breakout clone in Python that will have very many powerups/powerdowns (so far I came up with 26). Some will affect the paddle (paddle missile, two paddles, short paddle, etc.), some will affect the ball (slow ball, destructo-ball, invisible ball, etc.), some will affect the bricks (brick scramble, move up, bricks indestructible, etc.), and some will affect other game aspects (extra life, more points, less points, etc.). I'm pretty sure I have the code to draw the falling powerups and test for collisions with the paddle down, but I'm confused about how to code the effects of the powerups. Since there are very many powerups, it seemed inefficient to add specific methods to each component as done in this tutorial. However, I can't think of an other ways to implement the powerups. I found a page that hints at some way to design powerup behavior using classes, but I'm at a loss for how to do that. (A short example would help.) Please give me a short code example of another way to implement the effects of the powerups.

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• Is it only possible to display 64k vertices on the monitor with 16bit?

  - by Aufziehvogel

  I did the first 3D tutorial over at riemers.net and stumbled upon that my graphic card only supports Shader 2.0 (Reach profile in XNA) which means I can only use Int16 to store the indices (triangle to vertex). This means that I can only store 2^16 = 65536 vertices. Also I read on the internet that you should prefer 16-bit over 32-bit because not all hardware (like mine) does support 32-bit. Yet, I am wondering: Do really all game scenes get along with only so little vertices? I though already faces of people used a lot of polygons (which are made up of vertices?). It’s not relevant for me yet, but I am interested: Do game scenes use only 65536 vertices? Do you use some trade-off to display more (e.g. 64k in GPU buffer rest on RAM) Is there some method to get more into the GPU buffer? I already read on some other posts that there seems to be a limit of 64k per mesh too, so maybe you can compact stuff to meshes?

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• Rotation, further I go from 0:0, the further the object positions around the origin while rotating

  - by Serguei Fedorov

  For some reason I am having the issue where the following code: global.spriteBatch.Draw(obj.sprite, obj.getPosition(), null, Color.White, obj.rotation, obj.center, 2f, SpriteEffects.None, 1); causes the object to rotate around the origin in such a way, as though there is an offset to the position relative to its location. The calculation for the center it correct and this happens even if I set the pivot to be the location of the object. The further I get from 0:0 the larger the radius or rotation. I am not sure what is going on here because given the following tutorial http://www.riemers.net/eng/Tutorials/XNA/Csharp/Series2D/Rotation.php I have done the code setup correctly. Any ideas? Any help is greatly appreciated!!!

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• Algorithm to increase odds of matching when randomly selecting

  - by Bryan

  I am building a mobile game loosely based on dual n-back http://brainworkshop.sourceforge.net/tutorial.html Now with the game I have 9 squares (numbered 1 through 9) and 9 letters (A through K) In the current code, I randomly select a square (e.g. 3) and a letter (e.g. C), then repeat the random selection for the next turn. For 1-back, I test whether either, neither or both match the previous turn. The problem with my current code is I get very few matches - I can go through many turns without having either match. How can I increase the match frequency, or alternatively decrease the randomness so a match is more likely? I am not looking for specific code (but pseudo-code would be fine) - just more an approach to increase match frequency.

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• Working with Primary Keys and Generators - Quickstart with NHibernate (Part 4)

  - by BobPalmer

  In this NHibernate tutorial, I'll be digging into the ID tag and Generator classes.  I had originally planned on finishing up a series on relationships (parent/child, etc.) but felt this would be an interesting topic for folks, and I also wanted to start integrating some of the current NHibernate reference. Since this article also includes some reference sections (and since I have not had a chance to check for every possible parameter value), I used the current reference as a baseline, and would welcome any feedback or technical updates that I can incorporate. You can find the entire article up on Google Docs at this link: http://docs.google.com/Doc?id=dg3z7qxv_24f3ch2rf7 As always, feedback, suggestions, and technical corrections are greatly appreciated! Enjoy! - Bob

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• Radeon HD4850 card, ubuntu 12.04.1 LTS Installed FGLRX drivers, but still running vesa, how to solve it?

  - by user113416

  I have ati HD4850 card, ubuntu 12.04.1LTS. To begin with, after fresh instll, i installed fglrx drvers from system -- additional drivers, according to fglrxifo everything was alright, but the system was running on vesa:sem. After that, i have reinstalled and installed drivers according to many tutorials, but stille got that problem. one of the tutorial was here: What is the correct way to install ATI Catalyst Video Drivers (fglrx)? of course, i attempted to install 12.6 driver Now i have a fresh install of ubuntu and don't want to touch anything without anyone's support, because my 3 days nightmare didn't give results. what must i do to have an adequate performance of video card? Thanks in advace.

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• MouseEvent.CLICK not working? (AS3)

  - by Jake

  ok so here's my code in AS3, I'd like to know why when i actually click on the picture, nothing happens. And if any of you have great tutorial of what to learn after classes/functions in AS3, let me know =D : package { import flash.display.Bitmap; import flash.display.Sprite; import flash.display.Shape; import flash.events.MouseEvent; public class Main extends Sprite { [Embed(source="../Pics/Picture.png")] private var HeroClass:Class; private var hero:Bitmap = new HeroClass(); public function Main():void { addChild(hero); hero.addEventListener(MouseEvent.CLICK, onClick); function onClick(e:MouseEvent):void { trace("hey"); hero.visible = false; } } } }

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• Secure Web Apps from SQL Injection in ASP.Net

  In the first part of this two-part series you learned how SQL injection works in ASP.NET 3.5 using a MS SQL database. You were also shown with a real web application which was not secure against SQL injection attacks how these attacks can be used by the hacker to delete sensitive information from your website such as database tables. In this part you will learn how to start securing your web applications so they will not be vulnerable to these kinds of exploits. A complete corrected example of the insecure web application will be provided at the end of this tutorial.... ALM Software Solution ? Try it live! Requirements Management, Project Planning, Implementation Tracking & QA Testing.

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• Create ASP.NET 3.5 Sitemap XML for Navigational Web Controls

  It is important to create a user-friendly website. One aspect that defines a user friendly website is having clearly-defined navigation based on a web sitemap. In ASP.NET 3.5 there are called navigational web controls that are used to create and present navigation to website users. These navigational web controls depend on the website XML sitemap. This tutorial will illustrate how a developer can create this XML sitemap which can be used to power the web controls needed to present website navigation.... It?s Better Together Deploy Windows Server 2008 r2 with Windows 7 and get a host of special features.

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• Why do we move the world instead of the camera

  - by sharethis

  I heard that in an OpenGL game what we do to let the player move is not to move the camera but to move the whole world around. For example here is an extract of this tutorial: http://open.gl/transformations In real life you're used to moving the camera to alter the view of a certain scene, in OpenGL it's the other way around. The camera in OpenGL cannot move and is defined to be located at (0,0,0) facing the negative Z direction. That means that instead of moving and rotating the camera, the world is moved and rotated around the camera to construct the appropriate view. Why do we do that?

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• Blender: Having trouble moving vertices

  - by capcom

  I've been using Blender for two days now, and ran into an issue while following a tutorial. Before anything else, I'd like to show you all what my problem precisely is. Here is a short video I uploaded: click here. I thought it may be easier for you all to help me identify and solve my problem more accurately with a visual aid. I would like to emphasize that this issue began to occur after I extruded that trapezoidal region (misstated as a parallelogram in the video). I decided that I did not want the extruded region, and just hit undo. Ever since then, I began to experience the problem you viewed. Thanks.

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• Dual boot windows 8.1 acer V3-571G with Ubuntu 13.10

  - by tara512

  I am trying to dual boot my acer which came with windows 8 pre-installed. I tried using the tutorial here doing it the simple way but when I load Ubuntu from my transcended flash drive it says that there is no other operating system installed. I tried partitioning my hard drive but I seem to have 3 recovery partitions and even though I have 485GB free I can only allocate 100GB to the new partition. I would like to have most of my hard drive allocated to Ubuntu and just use the windows for programs like microsoft office.

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• Inserting Data into a Microsoft SQL 2008 Database in ASP.NET 3.5

  In the previous article Creating an ASP.NET Dynamic Web Page using a MS SQL Server 2 8 Database GridView Display you learned how to create a dynamic web page that can let the user edit and delete database records directly using a web browser. It was demonstrated with a home renovation project where team leaders can update and delete project tasks online. However it does not include features that let users add or insert new records directly into the database using a web browser. This feature will be covered in this tutorial.... Cloud Servers in Demand - GoGrid Start Small and Grow with Your Business. $0.10/hour

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• iOS: game with facebook challenges

  - by nazz_areno

  I created a game for iPad and I want to challenge my facebook friends. I follow the iOS tutorial in "facebook dev docs", with the "Smash game", but it doesn't explain how to challenge a friend directly to a game. I will explain with an example: I want to start a new match and I want challenge a friend on facebook. Then I send him a request to install the app and when I detect that its app is installed I send him a request to play vs me. Then, when I finish the match I sent him my result and my friend do the same thing. But if I and my friend don't finish the match it is not possible to send another challenge. This scenario is not explained by facebook sdk. Is it necessary to use another instrument to do this situation?

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