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  • How to efficiently map tokens to code in a script interpreter?

    - by lithander
    I'm writing an interpreter for a simple scripting language where each line is a complete, executable command. (Like the instructions in assembler) When parsing a line I have to map the requested command to actual code. My current solution looks like this: std::string op, param1, param2; //parse line, identify op, param1, param2 ... //call command specific code if(op == "MOV") ExecuteMov(AsNumber(param1)); else if(op == "ROT") ExecuteRot(AsNumber(param1)); else if(op == "SZE") ExecuteSze(AsNumber(param1)); else if(op == "POS") ExecutePos((AsNumber(param1), AsNumber(param2)); else if(op == "DIR") ExecuteDir((AsNumber(param1), AsNumber(param2)); else if(op == "SET") ExecuteSet(param1, AsNumber(param2)); else if(op == "EVL") ... The more commands are supported the more string comparisions I'll have to do to identify and call the associated method. Can you point me to a more efficient implementation in the described scenario?

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  • This week in the OTN Architect Center

    - by Bob Rhubart
    Updated every Monday, the Oracle Technology Network Architect Center is your one-stop for the latest content drawn from across the architect community. You find the articles and white papers, the latest ArchBeat Podcast, selected blog posts from community leaders, a list of events for architects, along with the latest information on Oracle products. Featured this week: A Fusion Applications Technical Overview A sample chapter from Managing Oracle Fusion Applications by Richard Bingham, new from Oracle Press. Oracle Optimized Solution for Lifecycle Content Management A new white paper from Donna Harland and Nick Kloski. Toronto Architect Day Panel Discussion - Part 2 The second of a four-part program featuring a live recording of the panel discussion from OTN Architect Day in Toronto, featuring Oracle ACE Director Cary Millsap, InfoQ.com editor and co-founder Floyd Marinescu, and members of Oracle's Enterprise Architecture team. Check it out: OTN Architect Center

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  • Rails version not shown post installation

    - by mgj
    Hi all, I had installed rubygems 1.8 and further on I had installed the rails 2.0.2 gem. When I tried to view the rails version installed through the command rails -v It didn't work.. I am unable to figure out why I am getting an "invalid option" on executing the command rails -v ( Please refer the below for the same). mohnish@mohnish-laptop:~/Downloads$ ruby -v ruby 1.8.7 (2010-01-10 patchlevel 249) [i486-linux] mohnish@mohnish-laptop:~/Downloads$ gem list *** LOCAL GEMS *** actionmailer (2.0.2) actionpack (2.0.2) activerecord (2.0.2) activeresource (2.0.2) activesupport (2.0.2) rails (2.0.2) rake (0.8.7) mohnish@mohnish-laptop:~/Downloads$ rails -v getopt: invalid option -- 'v' Terminating... mohnish@mohnish-laptop:~/Downloads$ Could you please help me out on this regard.. Please note I am currently not making use of the ruby version manager(rvm). Please let me know if I could get a solution once I install the rvm. Thanks for your help..

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  • How to copy existing movie files on ipad to watch?

    - by Rob Van Dam
    I have an iPad and a desktop running Ubuntu 12.04 with lots of movie files of various formats (avi, mp4, m4v, etc). Is it possible to transfer those files from within linux directly to the iPad (without using iTunes to sync) over USB and then play those movies on the iPad without reformatting/resizing all of them? I've used iTunes in a Windows XP virtualbox instance with other iOS mobile devices before but I would prefer a pure linux approach if possible. (I'm creating this question so that I can share the solution I found because I failed to find a simple, satisfactory answer elsewhere).

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  • How can I install canon pixma ip100 driver for Ubuntu 12.04LTS 64bit?

    - by kina
    I tried installing the driver by typing the following commands in the terminal: sudo add-apt-repository ppa:michael-gruz/canon - the result was the following: You are about to add the following PPA to your system: More info: https://launchpad.net/~michael-gruz/+archive/canon Press [ENTER] to continue or ctrl-c to cancel adding it Then I typed: sudo apt-get update - the result was the following: Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /tmp/tmp.HDuHmOSJ0l --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyserver hkp://keyserver.ubuntu.com:80/ --recv 84E550CD36EC35430A66AC5A03396E1C3F7B4A1D gpg: requesting key 3F7B4A1D from hkp server keyserver.ubuntu.com gpg: key 3F7B4A1D: "Launchpad Misakovi" not changed gpg: Total number processed: 1 gpg: unchanged: 1 I typed the next command: sudo apt-get install cnijfilter-ip100series The return response was: Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package cnijfilter-ip100series Does anyone know the solution? Kina

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  • Vmware installation over ubuntu sever 12.04 lts

    - by Sandeep
    How to install vmware workstation 7.1.6-744570.i386 on Ubuntu Server 12.04 lts. i installed it but error is coming . Vmware kernel module updater Unable to build kernel module. See log file /tmp/vmware-root/setup-8887.log for details. make[2]: * [/tmp/vmware-root/modules/vmmon-only/linux/driver.o] Error 1 make[1]: * [module/tmp/vmware-root/modules/vmmon-only] Error 2 make[1]: Leaving directory /usr/src/linux-headers-3.2.0-27-generic-pae' make: *** [vmmon.ko] Error 2 make: Leaving directory/tmp/vmware-root/modules/vmmon-only' please provide the solution for this

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  • Simulating Smartphones on PC with Unity

    - by Cengiz Frostclaw
    I want to make a game that depends on the phone orientation (changing shoot direction with tilt), however I need to test this on PC. So is there any tool I can use to simulate the orientation of the phone with mouse or keyboard of my PC? Something like joysticks on the screen. Thanks for any help! Edit : Thanks to @jhocking for his suggestion of Unity Remote. I, however still can accept a solution with using only PC, since I'm afraid of shortening my phone's battery life, for some reason.

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  • Deleting ASP.NET application subdirectories causes application recycle!

    - by geekrutherford
    This may not be news to most people, but was definitely a shock to me!   In the .NET 2.x framework a "feature" was implemented where by an ASP.NET application is automatically recycled if any subdirectory is deleted. This was apparently implemented to prevent stale content from appearing on a site.   The unfortunate side effect of this "feature" is that when using the "InProc" model for session management, all session data is lost if a subdirectory is deleted.   For those who progammatically may be adding/deleting directories within their application as inherent functionality, this causes a rather large problem.   The solution? Create your folder(s) which may be programmatically deleted outside of the root folder for the application. Alernatively, utilize a file based structure vs. folders since deleting files does not result in the same issue.

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  • Make the JavaScript Test Pass

    Add code on the commented line: var f = function () { var value = // ??? return f.sum = (f.sum || 0) + value;} ... to make the following QUnit test pass: test("Running sum", function () { equals(f(3), 3); equals(f(3), 6); equals(f(4), 10); jQuery([1, 2, 3]).each(f); equals(f(0), 16); }); Possible Answer It's a goofy scenario, but one possible solution uses a technique you'll see frequently inside today's JavaScript libraries. First, we'll need to use the implicit arguments parameter inside...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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  • Loss of privileges when enabeling auto log-in to encrypted home folder

    - by reav
    I use Ubuntu 11.10 with Gnome Shell and have an encrypted home folder. I enabled auto log-in through the system settings/users-admin menu, as I expected it didn't work (because of my encrypted home folder/user I suspect). But now I don't have privileges to mount my eksternal hard-drive, and I can no longer disable the auto log-in function, since the un-lock button in users-admin menu is grayed out. It seems like my users privileges has been degraded. Does any one have an solution to how I disable auto log-in and regain my privileges?

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  • Interpolation gives the appearance of collisions

    - by Akroy
    I'm implementing a simple 2D platformer with a constant speed update of the game logic, but with the rendering done as fast as the machine can handle. I interpolate positions between actual game updates by just using the position and velocity of objects at the last update. This makes things look really smooth in general, but when something hits a wall/floor, it appears to go through the wall for a moment before being positioned correctly. This is because the interpolator is not taking walls into account, so it guesses the position into walls until the actual game update fixes it. Are there any particularly elegant solutions for this? Simply increasing the update rate seems like a band-aid solution, and I'm trying to avoid increasing the system reqs. I could also check for collisions in the actual interpolator, but that seems like heavy overhead, and then I'm no longer dividing the drawing and the game updating.

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  • Keeping up with upstream changes while adding small fixes or even major changes

    - by neo
    Often I need to apply some small fixes (to make them run on my environment) or even change some parts of the software (to tailor it to my needs) to software from outside. However this obviously creates problem with updating said software, even when it changes nothing related to my fix. It would be easier when the software provided integration for some kind of plugins but more often than not it doesn't. What would be an ideal workflow regarding that? Most of the projects are git repos I pulled from outside. How should I apply my changes so that I can update painlessly? You can assume that external changes are much more often and larger than my own ones, so reviewing each one of them won't be a solution.

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  • Regarding Lost Administrative Password

    - by Rex Haggard
    I'm working on a Ubuntu 10.04 (Lucid Lynx) system using a Panasonic CF-50 Laptop. My Client has completely forgotten his Administrative Password. He doesn't even remember entering one; however it is there. I've tried the suggestions on the WebSite and I have been unsuccessful in deleting the password so that I can download applets required for running some files. Do you have a solution? I look forward to hearing your response. Thanks for your time and consideration. -- Rex Haggard 1967 North St. Apt. #15 New Orleans, La 70802

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  • IDirect3DDevice9Ex and D3DPOOL_MANAGED?

    - by bluescrn
    So I wanted to switch to IDirect3DDevice9Ex, purely for the SetFrameLatency function, as fullscreen vsynced D3D seemed to produce noticable input lag. But then it tells me 'ha ha ha! now you can't use D3DPOOL_MANAGED!': Direct3D9: (ERROR) :D3DPOOL_MANAGED is not valid with IDirect3DDevice9Ex Is this really as unpleasant as it looks (when you're relying quite heavily on managed resources) - or is there a simple solution? If it really does mean manual management of everything (reloading all static textures, VBs, and IBs on a device reset), is it worth the hassle, will IDirect3DDevice9Ex bring enough benefit to make it worth writing a new resource manager? Starting to think I must be doing something wrong, due to this: Direct3D9: (ERROR) :Lock is not supported for textures allocated with POOL_DEFAULT unless they are marked D3DUSAGE_DYNAMIC. So if I put my (static) textures in POOL_DEFAULT, they need flagging as D3DUSAGE_DYNAMIC, just because I lock them once to load the data in?

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  • SilverlightShow for 20-26 Dec 2010

    - by Dave Campbell
    Check out the Top Five most popular news at SilverlightShow for last week (20 - 26 Dec 2010). The most popular news for last week is Ryan Alford's solution on handling an error in Silverlight 4 when using Entity Framework 4, followed by Jeremy Likness' video on building an RSS Feed Reader in Silverlight. Here is SilverlightShow's weekly top 5: Silverlight 4 - Productivity Power Tools and EF4 A Silverlight MVVM Feed Reader from Scratch in 30 Minutes Resizable Grid Using Thumb Controls A Simplified Grid Markup for Silverlight and WPF Announcing the Winner of Telerik Silverlight controls in SilverlightShow Post-webinar Survey Visit and bookmark SilverlightShow. Stay in the 'Light

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  • Ubuntu doesn't boot after 11.10 upgrade from 11.04

    - by Gio Borje
    Had this problem earlier: Crash after update to 11.10, from 11.04; ran the solution and had everything updated and upgraded. I get the following lines after booting with some of the preceding start, stop an [OK] lines as the other topic. * Checking battery state... [ 21.640534] btusb_intr_complete: hci0 urb ffff88011e948480 failed to resubmit (19) [ 21.640690] btusb_bulk_complete: hci0 urb ffff88011e948cc0 failed to resubmit (19) [ 21.640734] btusb_bulk_complete: hci0 urb ffff88011e9480c0 failed to resubmit (19) I run tty2 and execute startx to start the GUI that I'm using right now but Ubuntu won't boot without it.

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  • Broken links in content reports when tracking subdomains with Google Analytics

    - by Rob Sobers
    I have a tracking code that I use on my main site and my blog, which is on a subdomain: www.example.com blog.example.com I have a single profile in Google Analytics. I use advanced segments to look at traffic to the main site vs. traffic to the blog. Problem 1: When I'm browsing my content reports under Standard Reporting, the "Page" column doesn't show the top-level or sub-domain, so I can't differentiate www.example.com/index.html from blog.example.com/index.html easily. According to the docs, this filter is supposed to make GA prepend the hostname to the page URL in your content reports, but it doesn't seem to work. Problem 2: When I click on the little "Open in new window" icon next to a given page in a content report line, it always assumes the page lives on www.example.com, so I get 404s when the page is actually on blog.example.com. Is there a good solution for these subdomain tracking problems?

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  • FormatDate in Display Item Form Webpart

    - by H(at)Ni
    I've faced an issue that I wanted to display the date in the format of ('MMMM dd') that is retrieved from a sharepoint list in an arabic site collection. So, after googling this issue, I've found out that a possible solution to my poblem is using the function ddwrt:FormatDateTime that can be used as long as you'll include the following namespace xmlns:ddwrt="http://schemas.microsoft.com/WebParts/v2/DataView/runtime" My purpose was solved by writing this line of code in my xsl code behind for the webpart : ddwrt:FormatDateTime(string(@StartDate),3073,'MMMM dd') but that worked only if the webpart is inserted into an English site . After trying to search but in vain, I started to use my guesses that ended up doing something like that: ddwrt:FormatDateTime(ddwrt:FormatDateTime(string(@StartDate),3073,'dd/MM/yyyy'), 3073, 'MMMM dd') And the cause of the problem was that sharepoint parses the date as 'MM/dd/yyyy' which I think could be related to server regional settings, so I had to force it to parse the date in arabic-Egypt format as 'dd/MM/yyyy' in order to get the correct 'Month Day' format as expected.

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  • Website with sections in Drupal?

    - by Matt Hampel
    What is the best way to create a website with sections in Drupal? Users need to be able to add, remove, and nest pages fairly easily. Pages added to a section should have an appropriate URL, like "/[section name]/[page title]". This seems like a straightforward task, but I can't find the right combination of tools to do it. Subsite comes close, but for some odd reason, doesn't set up the correct content paths. The closest I got was creating a book for each subsection, but that feels like I'm using the wrong tool for the job. Edited with my solution: I used organic groups with pathauto. I set pathauto so that pages in groups had URLs that were of the form [group path]/[page title].

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  • Using Robocopy to Backup to a NAS

    - by Your DisplayName here!
    When using Robocopy to backup data to a NAS, I always had the problem that most files were considered “old” on the NAS device (even if they weren’t) – that kind of defeats the purpose of the /MIR switch. Today I finally decided to search for a solution – and it was remarkably easy. Most NAS devices use Samba or something similar to provide “NTFS shares” – but most of them only implement FAT-style file times with a 2-second-granularity. You can force robocopy to use FAT file time as well using the /FFT switch. Now my backup script works again as expected. See also here.

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  • Zookeeper naming service [closed]

    - by kolchanov
    I need a recommendation for naming service implementation. We are ISV and we have a lot of applications (services) with very different protocols such as http (Rest), low level tcp, amqp, diameter, telco protocols Rx, Ry, Ud and many others. We want to simplify configuration, deployment and service discovery procees and it seems that It's time to create central configuration registry. So I have few questions: - is zookeeper suitable for this purpose? - does exists more suitable and more special solution? - best practice for service naming for discoverin. Any standards? - recommendation for service configuration data structure Also we are keeping in mind future tasks For dynamic application distribution in a private cloud. Could you share your real life experience?

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  • OpenGL behaviour depending on the graphics card?

    - by Dan
    This is something that never happened to me before. I have an OpenGL code that uses GLSL shaders to texture a 3D model. The code involves a lot of GPU texture processing, blending, etc... I wanted to check how the performance of my code improves using a faster graphics card (both new and old are NVIDIA, using always the NVIDIA development drivers). But now I have found that once I run the code using the new graphics card, it behaves completely different (the final render looks wrong), probably because some blending effect is not performed correctly. I haven't really look into what has changed, but I am guessing that some OpenGL states are, by default, set different. Is this possible? Have you ever found different OpenGL/GLSL behaviour using different graphics cards? Any "fast" solution? (So far I've thought of plugging back the old one, push all OpenGL default states, and compare with the ones I initially get using the new card..)

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  • Welcome to my first official full time employee!

    - by Vizioz Limited
    The last few months have been pretty manic and Vizioz has been growing successfully into a fully fledged development agency. I have been working with a couple of excellent off shore developers who I would like to publicly thank for all their hard work over the last couple of months!This week has been the start of a new era for Vizioz, I have taken on my first full time developer who is now based in our office in Reading, welcome to Colin. Which means we now have 3 Umbraco developers! Currently one with Level 2 qualification (me) but if business keeps growing I'll be sending the others for training shortly so hopefully by the end of the summer we'll be a certified solution provider.We have lots of plans for the next 6 months, so it should be exciting times, subscribe to my RSS feed to come along for the ride :)

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  • Importing 3d model with multiple skeletons

    - by Sweta Dwivedi
    I have created an animated butterfly in 3ds Max and try to export it in ".fbx" format to use in XNA, however as soon as I compile, i get the following Errors: Warning 1 Multiple skeletons were found in the file. The first skeleton, named "Left.Wing" has been moved to be a child of the scene root. The other, "Right.Wing", will be ignored. Fragment identifier "Right.Wing". Error 2 Vertex is bound to bone "Right.Wing", but this bone is not present in the skeleton. Which is confusing since I have the bone Right.Wing . . and I use it to animate the butterfly I have seen a few possible solution for Blender but none for 3Ds max it would be really helpful if someone could help me out with this

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  • Ubuntu DVR - what are the options?

    - by Alex D
    According to my research, the best solution to use ubuntu server as a DVR system would be ZoneMinder. is there any alternatives to zoneminder out there? I'm not really happy it only has a web interface to control/view my cameras. And it doesn't have an option to record video stream non-stop. Am I missing something in its configuration? And the thing I really disappointed, I cant find a way to control my PTZ camera with it. what do manufacturers sell along with their standalone linux powered dvr systems?

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