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Articles indexed in September 2012

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• Issue in Webscrapping in C# : Downloading and parsing zipped text files

  - by user64094

  I am writing an webscrapper, to do the download content from a website. Traversing to the website/URL, triggers the creation of a temporary URL. This new URL has a zipped text file. This zipped file is to be downloaded and parsed. I have written a scrapper in C# using WebClient and its function - DownloadFileAsync(). The zipped file is read from the designated location on a trapped DownloadFileCompleted event. My issue : The Windows 'Open/Save dialog is triggered". This requires user input and the automation is disrupted. Can you suggest a way to bypass the issue ? I am cool with rewriting the code using any alternate libraries. :) Thanks for reading,

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• What would be a good way to request comments?

  - by WarpEnterprises

  In the project/team I'm working the frequency of comments is a little low. One reason might be that it is not clear to the long-time devs what lines in the code really needs a comment (each part of the project has quite fixed devs). To increase this we plan to let team members review the code and check in "requests for comments", which the main dev of that part should replace with useful comments. Do you think this could work? If "yes": what tags should we use to mark? (e.g. //TODO please comment) Can you think of alternatives for this process? Edit: I appreciate your answers about best practice in commenting and writing code, and I completey agree. But my question targets the cases where refactoring is not an option (not wanting to change working code, not wanting to "accuse" main dev of producing code that needs refactoring,...) - so only more or better comments are an option (at least for this question).

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• Verification of requirements question

  - by user970696

  Doing a lot of reading about V&V, I would need to clarify the following. A lot of definitons (less formal ones found in books) define verification like that: Verification: The software should conform to its specification. But then they speak about requirement verification, design verification etc. If I say that these items are "software" in terms of applying the definitons, what should I checked them against, what specification should requirements, which is the basic information, conform to? And one more thing: shouldnt be requirements also validated? To make sure they meets the customer needs? All texts I have speak only about SW validation on the end of the dev.process..

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• Non-mathematical Project Euler (or similar)?

  - by Juha Untinen

  I checked the post (Where can I find programming puzzles and challenges?) where there's a lot of programming challenges and such, but after checking several of them, they all seem to be about algorithms and mathematics. Is there a similar site for purely logic/functionality-based challenges? For example: - Retrieve data using a web service - Generate output X from a CSV file - Protect this code against SQL injection - Make this code more secure - What is wrong with this code (where the error is in logic, not syntax) - Make this loop more efficient Does a challenge site like that exist? Especially one that provides hints and/or correct solutions. That would be a very helpful learning site.

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• Python as a first language?

  - by user64085

  I have just started working in Information Security World. I want to learn the Python language for creating my own automated tool for Fuzzing, SQL-Injection etc. My question is I don't know much about C language (only basic knowledge) but I want to learn directly Python Language so is it good? I have seen there is lots of difference between Python and C (obviously) and for Information Security field Python = GOD so I want to know learning Python need any experience on C language? If not so can I start learning Python directly?

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• Does Dart have any useful features for web programmers?

  - by marko

  http://www.dartlang.org/ I've checked out the site very briefly, and got curious. Is there any advantages of using Dart? Is it just a replacement for JavaScript? It looks like simpler Java. Writing quite a lot of C# at work, the language feels very much like what I'm used to, so learning the syntax looks like a breeze to learn. Has anybody any opinions or experiences with the language? (Compared to CoffeeScript (= I'm not doing Ruby syntax) the syntax looks more familiar to me).

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• Flexible cloud file storage for a web.py app?

  - by benwad

  I'm creating a web app using web.py (although I may later rewrite it for Tornado) which involves a lot of file manipulation. One example, the app will have a git-style 'commit' operation, in which some files are sent to the server and placed in a new folder along with the unchanged files from the last version. This will involve copying the old folder to the new folder, replacing/adding/deleting the files in the commit to the new folder, then deleting all unchanged files in the old folder (as they are now in the new folder). I've decided on Heroku for the app hosting environment, and I am currently looking at cloud storage options that are built with these kinds of operations in mind. I was thinking of Amazon S3, however I'm not sure if that lets you carry out these kinds of file operations in-place. I was thinking I may have to load these files into the server's RAM and then re-insert them into the bucket, costing me a fortune. I was also thinking of Progstr Filer (http://filer.progstr.com/index.html) but that seems to only integrate with Rails apps. Can anyone help with this? Basically I want file operations to be as cheap as possible.

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• Can Ubuntu create a semi-transparent subtitle player for accessibility?

  - by Tyler

  I've asked this in Reddit.com/r/Ubuntu in here. I've tried to get the Subtitle Player linked here to work and it have failed on Wine. So I'm curious if Ubuntu community would be willing to try and build a simple transparent subtitle player for better accessibility on Flash Player, Netflix, or even in movie theaters? Currently, I'm watching movies/videos with an Android Tablet that runs on a blank black video for 3 hours with a subtitle overlay on it so I can enjoy movie and so forth, but it requires a bit of effort and it definitely isn't for everyone. (People will have to look at the subtitle playing tablet and the movie back and forth at 60 degrees angle, while a transparent subtitle player would reduce it to 5 degrees angle to watch the movie.) Please and thank you.

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• After changing Compiz configuration, I can't use account

  - by Dumitru Cristian

  I think I have made some changes in Compiz and now I can't see anything on the screen when I log in with a user. For the other users everything is OK. Is there any possibility to reset to default compiz? All I can do logged in as the user with problems is pressing ctrl-alt-F2, and then I have to log in a terminal. I'm not at all a power user, so I apologies if my question is not very clear. Thanks in advance

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• Can't boot freshly burned Ubuntu cd

  - by user89004

  So I just burned a Ubuntu 12.04.1 powerpc .iso on a cd for my iMac G5 running Mac OS X 10.4.11 and it won't even recognize the cd. I burned it on my dad's Windows 7 laptop as the process is way easier (just 2 clicks). Mac OS X 10.4.11 gives me an error when it starts and when the CD is in saying "the disk you inserted was not readable by this computer". What's funny is that I burned a Ubuntu Minimal .iso on a CD and it would totally read that and even boot it though it gave me some errors afterwards and I couldn't install. I even tried going into openfirmware and hitting boot cd:,\tbxi but I get the error "Warning sector size mismatch can't OPEN cd:,\tbxi Can't open device or file" Was there something wrong with the .iso I burned? Mac OS X 10.4.11 won't even mount that .iso it tells me that the HFS file system is corrupt or something, but I know the .iso doesn't contain HFS file system. Any help? I downloaded the .iso from http://cdimage.ubuntu.com/releases/precise/release/ubuntu-12.04-desktop-powerpc.iso

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• Can't convert .iso to .img on iMac G5

  - by user89004

  So I'm trying to create a bootable USB stick in order to install Ubuntu 12.04.1 on my iMac G5 running Mac OS X 10.4.11 but whenever I try to convert the downloaded .iso file into a .img, the .img.dmg file that the terminal creates just suddenly dissapears no matter where I select the output file to be. I tried hdiutil convert -format UDRW -o /path/to/target.img /path/to/ubuntu.iso and also hdiutil convert /path/to/ubuntu.iso -format UDRW -o /path/to/target.img but the exact same thing happens. I tried becoming root before I do all of this with sudo su but I still get the same results. The totally weird thing is that it works perfectly with Ubuntu Minimal .iso files. Could it be that the .iso I downloaded is corrupt?

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• How to remove the old driver for Canon MX870 and install a new one?

  - by madjoe

  I am using 12.04. In addition to Canon MX870 printer only shows "Processing" on the status LCD, I'm not sure if I successfully removed the old MX870 driver (I removed it by using Ubuntu Software Center), then I added a new PPA, apt-get update and then: $ sudo add-apt-repository ppa:michael-gruz/canon-trunk $ sudo apt-get update $ sudo apt-get install cnijfilter-mx870series Reading package lists... Done Building dependency tree Reading state information... Done Package cnijfilter-mx870series is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'cnijfilter-mx870series' has no installation candidate How could I resolve this?

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• Can't install wireless driver or get ubuntu to recognize ethernet cable

  - by Catherine

  I'm brand new to Ubuntu and I'm tearing my hair out trying to figure out how to connect to the internet. When I try to activate the Broadcom STA wireless driver, it says "Sorry, installation of this driver failed. Please have a look at the log file for details: /var/log/jockey.log." So I try the steps detailed here http://ubuntuforums.org/showthread.php?t=1967515&highlight=jockey Problem is, I can't connect to the internet via ethernet cable either. I tested the cable with another laptop and it works just fine. I don't know what to do. Any help is greatly appreciated.

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• error: gnutls_handshake() falied

  - by Nyambaa

  When I try to connect any HTTPS server with git, it gives following error: error: gnutls_handshake() failed: A TLS packet with unexpected length was received. while accessing ... fatal: HTTP request failed So I think that maybe some packages that related the gnutls_handshake has been broken. So I want to reinstall that packages, which packages can be related this errors? or how do I fix this kind of error?

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• Monitor not detected after booting without monitor attached (12.04)

  - by cawkie

  I had a stable 12.04 machine running perfectly. The machine was booted without the monitor connected - since then the system always boots to low graphics mode. Onboard graphics (from lspci): VGA compatible controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03) Monitor: AOC e2450Swh Display widget shows monitor as laptop(!?) and system details shows graphics as Gallium 0.4 on llvmpipe (LLVM 0x300) X-server log appears to show correct monitor detected. When I boot from a live CD I get full 3d graphics I've tried the monitor on a different machine - all OK. I've tried a different monitor on this machine - same problem. Between having a working system and a broken one there have been no updates and I have made no configuration changes... EDIT: I have come to the conclusion that the problem is caused by a known issue with lightDM hanging on battery check. I've managed to get 3D graphic working by switching to using GDM - not a solution but acceptable workaround. I would still like to know what is causing the problem and how I managed to get my system into this state!

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• Error creating an .img file from an .ISO (MD5 verified)

  - by Rob

  I was following the instructions on this website to create a bootable USB flash drive on a Mac: http://www.ubuntu.com/download/help/create-a-usb-stick-on-mac-osx The instruction: hdiutil convert -format UDRW -o ~/path/to/target.img ~/path/to/ubuntu.iso does not create a valid file that the disk utility can copy to the USB drive, making installation on a USB drive useless. I've been repeating these instructions for days with no luck. The only thing that does not work is the .ISO to .IMG conversion. Is there a way to download Ubuntu 12.04 LTS 64-but Desktop in a .IMG file already? Unfortunately, my install notebook does not have an optical drive so USB is the only way. Thanks for your help!

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• Ubuntu not detecting second monitor

  - by Julian Le Saux

  I'm running Ubuntu 12.04 on a Lenovo x61s Thinkpad. As the screen's rather small and I want to do some video editing, I thought I'd plug in a monitor and use that. The monitor is Relisys JM777 (quite old). When I plug it into my other computer, which is running Windows 7, it immediately mirrors the display; but when plugged into the Lenovo the monitor screen remains blank. The graphics card on the Lenovo is a "VGA compatible controller" according to SysInfo. Anybody got any suggestions? I'm quite new to Linux, so simple explanations would be greatly appreciated. The contents of my Xorg.0.log file can be seen at http://paste.ubuntu.com/1009855/ .

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• Gracefully terminate a request based service on server

  - by Jatin

  In our web application, for each http-request there is a lot of computation that happens on back end. Output can vary from 10 sec - 1 Hour. In the mean time when it is computed, "Waiting.." is shown on the website for the respective user. But it so happens, that a user might cut down the service in between. So what all can be done on the back end so that the computation can be stopped in between to save resources? What different tactics can be applied here? And if better (instead of killing the thread directly), then a graceful termination policy should make wonders.

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• (Blogger) Map GoDaddy Domain For Blogger Custom Domain

  - by zulhfreelancer

  I just bought a new domain from GoDaddy (nurayka.net) and I want to use it for my .blogspot.com blog now. Here is my Blogger settings. And here is my GoDaddy DNS settings. After more than 24 hours, I still can't view my blog with that custom domain. It seems that it might be something wrong with my DNS settings. Does my DNS settings correct? Does GoDaddy Domain Forwarding should be enabled from 'nurayka.net' to 'www.nurayka.net'? Note: Before this, I have go through the GoDaddy Blogger DNS Setup and CNAME Tutorial. In the GoDaddy Blogger DNS Setup, I entered 'www.nurayka.net' and in the CNAME record (www), I entered 'ghs.google.com'. Thank You!

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• .htaccess two different rules but only one per time

  - by dragon112

  I'm rather new to the whole .htaccess thing and I'm using the following right now to use 'pretty url's': <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^(.*)$ index.php?path=$1 [NS,L] </IfModule> Now i found my website a bit slow and decided to start gzipping my CSS files thru a php script I found somewhere on the web (the website). For this to work I need to rewrite the url to open the correct php file. That would look something like this: RewriteRule ^(.*).css$ /csszip.php?file=$1.css [L] But I only want the first to happen when the second doesn't and vice versa. In other words i'd like something like this: <IfModule mod_rewrite.c> RewriteEngine On if request doesn't contain .css do RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^(.*)$ index.php?path=$1 [NS,L] else do RewriteRule ^(.*).css$ /csszip.php?file=$1.css [L] </IfModule> Can anyone help me with the proper code or a place where i can find a way to use some kind of conditional statement in htaccess files? Thanks in Advance!:)

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• Using subdomains or directories for main categories?

  - by Matthieu

  I have a website which references places to travel to in the world. Those places are (of course) grouped by countries. Here is an example of an actual URL of my website: http://awespot.org/country/105/iceland I am wondering if it would be better, in terms of SEO, to have the countries separated in subdomains: http://iceland.awespot.org/ I know subdomains are considered by Google as different websites, so I am considering the 2 options: separating would mean also separating the pagerank and benefits of links to the website but separating would enable me to create a "web" or related websites (all related to travel and all) that link and benefit to each other I am only asking about SEO here, I know there are other questions raised by this possibility (user experience, administration... even password completion by web browsers)

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• GA UA codes for testing site - set up

  - by Drew

  Anyone know the process for using a GA live UA code to test a site in development. I.e. I have a live site with a GA UA code attached, tracking live traffic data etc e.g. UA-123456. I've been told that there is a way to produce another code associated to the primary code to use on the testing version of my live site e.g. test code could be UA-123457. Can anyone shed some light on this? If not possible should I just set up a completely separate GA account for my testing site?

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• Importance of having EDU backlinks

  - by maisdesign

  I've built a few links on 50 EDU / GOV websites. 1 of them has PR 8, 3 of them have PR 7, 8 of them PR6,7 of them PR5,12 of them PR4,8 of them PR3, 1 of them PR2, 6 of them PR1, 10 of them PR0. My website has PR3 and is on first page of Google/Yahoo/Bing for a few keywords that I like How long will it take to notice a difference in PR or domain authority? (Don't tell me that PR has no value now, I know it but it is a 'fashion' thing). So you say that DOMAIN Authority isn't an important factor?

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• RasterizerState set to null after calling DrawText in Nuclex

  - by ProgrammerAtWork

  I have the following code in XNA: // class members Text t1; Text t2; Text t3; // init // Debugfont is size 24 vectorfont t1 = MM.DebugFont24.Fill("hello"); t1 = MM.DebugFont24.Extrude("hello"); t2 = MM.DebugFont24.Fill("hello"); t2 = MM.DebugFont24.Extrude("hello"); t3 = MM.DebugFont24.Fill("hello"); t3 = MM.DebugFont24.Extrude("hello"); // Draw TextBatch test = new TextBatch(MM.GD); test.DrawText(t1, Color.Red); test.DrawText(t2, Color.Red); test.DrawText(t3, Color.Red); test.End(); //After the second call to the TextBatch, RasterizerState of the GraphicsDevice is set to null //But I don't get any runtime errors or any indication of that something is wrong. Is this supposed to happen? Or am I doing something wrong? I've discovered that this happened because culling was set to None when I was rendering textures

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• Blender to 3ds max to cal3d format

  - by Kaliber64

  There are quite a few questions on cal3d but they are old and don't apply anymore. In Blender(must be 2.49a for python script to work!!!): I have a scene with 7 meshes, 1 armature, 10 bones. I tried going to one mesh to simplify it but doesn't change anything. I found a small blend file that was used for cal3d and it exported just fine. So I tried to copy it's setup with no success. EDIT*8/13/2012 In the last week here is what I have found so far. I made the mesh in the newest blender(2.62?) and exported it to import it in the old one(2.49a). Did an animation in the old one because importing new blend files to old blenders, its just said it would lose keyframe data and all was good. And then you get the last problem of it not exporting meshes. BUT I found that meshes made in the old one export regardless. I can't find any that won't export. So if I used the old blender to remake my model I could get it to export :) At this point I found a modified release of cal3d (because the most core model variable would not initiate as I made a really small test subject in old blender instead of remaking my big one which took 4 hours.) which fixes the morph objects and adds what cal3d left off with. Under their license they have to release the modification but it has no documentation so I have to figure it out on my own. Its mostly the same. But with this lib it came with a 3ds max exporter. My question now is how do I transfer armature and mesh information from blender to 3ds max in order to export into cal3d format. Every time I try the models are see through and small and there are no bones. The formats I have tried to import are .3ds .obj(mesh only) and COLLADA. In all of them the mesh is invisible and no bones. It says the default texture is on so I should be able to see it. All the vertices are present I found a vertex highlighter so I can see those. If any of this is confusing let me know so I can clear it up. Its late .<=sleep.

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