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• Using mozilla plataform to develop desktop applications

  - by RHaguiuda

  Hi everyone. From what It seems mozilla plataform was designed to be used focused in web development (browsers, e-mail clients, instant message...). I want to use Mozilla plataform to develop desktop applications that need most access to computer serial port and some applications that have nothing to do with web. Im considering mozilla because its multi-plataform and easy to extend using themes and extensions. Is it possible to program a serial terminal for example using mozilla? Does mozilla have any class ou framework that do this job or I`ll have to code for windows API? Thank you!

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• the name 'controlname' does not exist in the current context

  - by zohair

  Hi, I have a web application that I'm working on(ASP.NET2.0 with C#)[Using VS2005]. Everything was working fine, and all of a sudden I get the error: Error 1 The name 'Label1' does not exist in the current context and 43 others of the sort for each time that I used a control in my codebehind of the page. This is only happening for 1 page. And it's as if the codebehind isn't recognizing the controls. Another interesting thing is that the intellisense isn't picking up any of the controls either.. I have tried to clean the solution file, delete the obj file, exclude the files from the project then re-add them, close VS and restart it, and even restart my computer, but none of these have worked. Please Help. Thank you

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• Voting software with remote units - architectural questions

  - by David Neale

  I'm looking at designing some software that registers live votes (let's say A,B,C or D). The vote needs to be picked up and processed by a .NET engine. The remote voting units should be as small as possible. What form of data transmission should be used for the voting? The data is obviously very simple but there is a need to make sure each unit can only vote once per question. How would the data be received by the computer running the software?

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• Where to Start with build a personal site and WordPress, CSS and CMS

  - by Simon

  Hey guys im in a very confused state of mind at the moment and need some help with Word Press and generally starting a website. My parents have had a business for 20 years and have finally decided to get a website! As im studying IT and Business i said id get it done for them. Rather than design it from scratch i used a template which i bought from themeforest.net (awesome template!) and yesterday a friend mentioned in passing using word press as a CMS which i had never heard of before, and he left before i could ask any questions. SO basically i have a site working on my computer and i have no idea how to get it live as a .com or .com.au, so far as i can see wordpress is a blog with .wordpress.com which isnt what im looking for. Thanks in advance Simon

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• How to check when Shell32.Folder.CopyHere() is finished

  - by Jelle Capenberghs

  I need to unzip en zip some files in my application using Shell32. Right now, I use srcFolder.CopyHere(destFolder.Items()) to achieve this. However, my next line of code requires the newly made ZIP-file. But since the CopyHere method is Async, how can I check when it in finished? Right now I use a Thread.Sleep for around 500 ms which is enough for my computer to finish creating the ZIP file, but it's not good code imo. Any ideas? More info/code can be provided if necessary.

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• abandon session in asp.net on browser close..kill session cookie

  - by Tuviah

  So I have a website where I use session start and end events to track and limit open instances of our web application, even on the same computer. On page unload i call a session enabled page method which then called session.abandon. This triggers session end event and clears the session variable but unfortunately does not kill the session cookie!! as a result if other browser instances are open there are problems because their session state just disappeared...and much worse than this when I open the site again with the zombie session still not expired, I get multiple session start and session end events on any subsequent postbacks. This happens on all browsers. so how do I truly kill the session (force the cookie to expire)

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• when does a software become "proprietary" ?

  - by wefwgeweg

  say a company is using Open source libraries, or programs, and packaging it into a proprietary solution. or perhaps, the engineers have copy pasted certain section of those open source libraries and have compiled it now, into a very useful "proprietary" software suite. what legal troubles will this company face if any ? are you allowed to do this ? i mean the customer doesn't see the source codes, only runs the binary files on their computer. for example, i find an excellent NLP library in python, and decide to use it in my program that i am selling for $4000 USD (i write like 10 lines of code and let the library do the work). could i get into trouble ? would i need to write the NLP library myself from scratch to be considered "proprietary" ? danke

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• How to see a branch created in master

  - by richard

  Hi, I create a branch in my master repository (192.168.1.2). And in my other computer, I did '$ git pull --rebase ', I see Unpacking objects: 100% (16/16), done. From git+ssh://[email protected]/media/LINUXDATA/mozilla-1.9.1 62d004e..b291703 master -> origin/master * [new branch] improv -> origin/improv But when I do a 'git branch' in my local repository, I see only 1 branch and I did '$ git checkout improv ' $ git branch * master $ git checkout improv error: pathspec 'improv' did not match any file(s) known to git. Did you forget to 'git add'?

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• Update website with a single command (git push) instead of FTP drag and dropping

  - by Wolfr

  Situation: I have a local copy of a website I have a server that I have SSH access to What do I want to do? Commit locally until I'm happy with my code Make branches locally Have one master branch that is the one that should be pushed to the server Update the website using a single command (git push origin master) If I set up a git repo locally using git init, and then push to a folder on the server, it doesn't work. When I FTP to the server to check the files, they're actually there. When I SSH into the server and do git status, it's not clean, even though it should be since I just pushed to the server. Steps I'm doing: Make a new folder on my computer (mkdir folder_x) Go into that folder (cd folder_x) Set up a new git repository there (git init) (git repository sets up successfully) Push the repository to the server using git push origin master (where origin is set up as user:[email protected])

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• Matlab postpones disp calls when doing demanding calculations why is that?

  - by Reed Richards

  I am implementing an algorithm in Matlab. Among other things it calculates shortest paths etc. so its quite demanding for my old computer. I've put out disp calls through out the program to see what's happening all the time. However when starting on a particulary heavy for loop the disp seemes not to be called until the loop is over even though it comes before the loop. Why is that? I though that Matlab was really linear or am I just choking it with to many calculations and the disp calls get the lowest priority?

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• Efficient way to create/unpack large bitfields in C?

  - by drhorrible

  I have one microcontroller sampling from a lot of ADC's, and sending the measurements over a radio at a very low bitrate, and bandwidth is becoming an issue. Right now, each ADC only give us 10 bits of data, and its being stored in a 16-bit integer. Is there an easy way to pack them in a deterministic way so that the first measurement is at bit 0, second at bit 10, third at bit 20, etc? To make matters worse, the microcontroller is little endian, and I have no control over the endianness of the computer on the other side.

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• How do you compile an OpenGL program on Ubuntu?

  - by Steve Johnson

  I'm a Ubuntu user who is interested in learning OpenGL. I found a page with some samples on it: http://www.opengl.org/resources/code/samples/glut_examples/examples/examples.html but when I try to compile the first one using: cc -o abgr abgr.c -lglut -lGLU -lGL -lXmu -lXext -lX11 -lm I get an error message saying: /usr/bin/ld: cannot find -lXmu collect2: ld returned 1 exit status What is "lXmu"? How do I get this to compile? I'm 15 years old and new to computer programming. Thanks!

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• turning on Greasemonkey live editing

  - by Delirium tremens

  On Firefox, I click Tools, Addons, Extensions, Greasemonkey, Options, select my user script, click Edit, change the source code, reload one of the included pages, but the script is the unchanged version. On User Scripts, logged in, I click my username, Script Management, my script's name, Admin, Edit Code Online, change the source code, click save, the link to the install page, install and the script is the changed version. How did you turn on Live Editing? While following Greasemonkey tutorials, this feature is not working... Are you going to use the "works on my computer" excuse? Should this be on the Stack Overflow sister site Super User?

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• flash with recaptcha or any other captcha solution

  - by Katsuke

  Hello there, I have been looking over the internet for a while about this, but it doesn't seem like there is any information available specifically related to captcah and flash. My purpose is to create an image up-loader on flash, and implement "recaptcha" on it, so the upload is controlled. I know that some people will say, "well you can't automatize flash input so you don't need captcha in this situation" even though this is somewhat true, there is still screen macro programs that could potentially make the computer upload hundreds of pictures if there is not something in place to avoid it. I thought of implementing my own captcha but that seems to me like i would be reinventing the wheel, can anyone point me on the right track for this? or suggest another approach to avoid abuse on my image up-loader flash?

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• How to import a macro file (previously exported as .bas file) to Microsoft Word using command line?

  - by Nam Gi VU

  I'm writing a command-line program that has a step in which I need to replace text in a Word file. The replacing task is accomplished using Word macro. What I need to do now is to call this macro from command-line. At the moment we can do this by using the -mMacroName parameter of 'winword.exe', i.e. \winword.exe -mMacroName. But this need the macro to be already available as a global macro. Since I need to run the program on another computer, I need to import the above replacing macro programatically... and I don't know how to do this. Please help.

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• How to completely wipe rubygems along with rails etc

  - by Earlz

  Ok, so I decided I'd be cool and try to use Rails3 that's in beta. Then, things were getting hard to manage so I got rvm. I installed ruby 1.9.2-head in rvm and things were working, and then a computer restart later rails wouldn't start up. So I figured I'd just try running the system ruby and start rails in it. same error. Then, I uninstalled rails3 and got rails: no such file or directory type errors.. So now I'm royally screwed because rails2 is still installed but will not uninstall because of invisible dependencies, along with a lot of other random gems. How do I completely clear out all ruby gems and such so I can start anew?

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• Choosing a plotting library for web/browser application

  - by Goro

  Hello, I am looking for a plotting/graphing library (mostly to do line plots) for my application. I have been looking at JavaScript APIs (like Google's) but I found them to be slowing down things at client side (I am plotting a quite large number of points). I also found that with client-side libraries, the performance was quite varied depending on the user's computer. With moving to a server-side library I would cut down on this variance, and would have more control over data flow (my data is in a MySQL database). I have then looked at some PHP-based plotting libraries, but a lot of them seem to be "forgotten" (no new version for years). I have been eying pChart, but it has not had an update in almost two years. First, what would you recommend: server-side or client-side approach? Second, what library would you recommend. Paid libraries are definitely an option, as I don't mind paying for quality software that would cut down on my development time. Thanks,

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• Tag/Keyword based recommendation

  - by Hellnar

  Hello I am wondering what algorithm would be clever to use for a tag driven e-commerce enviroment: Each item has several tags. IE: Item name: "Metallica - Black Album CD", Tags: "metallica", "black-album", "rock", "music" Each user has several tags and friends(other users) bound to them. IE: Username: "testguy", Interests: "python", "rock", "metal", "computer-science" Friends: "testguy2", "testguy3" I need to generate recommendations to such users by checking their interest tags and generating recommendations in a sophisticated way. Ideas: A Hybrid recommendation algorithm can be used as each user has friends.(mixture of collaborative + context based recommendations). Maybe using user tags, similar users (peers) can be found to generate recommendations. Maybe directly matching tags between users and items via tags. Any suggestion is welcome. Any python based library is also welcome as I will be doing this experimental engine on python language.

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• Presenting MVC to Old C++ Spaghetti Coders?

  - by leeand00

  I wish to present the idea of MVC to a bunch of old C++ spaghetti coders (at my local computer club). One of them that has alot of influence on the rest of the group seems to finally be getting the idea of encapsulation (largely due in part to this website). I was hoping that I could also point him in the right direction by showing him Model View Controller, but I need to do it in a way that makes sense to him, as well as it probably needs to be written in C/C++! I realize that MVC is a very old architectural pattern so it would seem to me that there should be something out there that would do the job. I'm more of a web developer, so I was wondering if anybody out there who is a good C/C++ coder could tell me what it is that made the MVC light switch turn on in your head.

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• How can I easily make a java application invisible to the user?

  - by Pedro Bellora

  Hello! I have developed a Java aplication that is currently being run by double-clicking on a ".bat" file that does something like "java -jar proy.jar". This application just listens on a port and writes to a database, so it does not have any user interface (such as a window). I need this application to run as in background mode, or as it where a service, but I don't really anything more than that. It's enough if the application is run in a way that is not noticeable by the user, so that the user is not bothered and so the application can not be mistakenly closed. By the way, this will be run on an specific computer so it's okay if I have to do any manual configuration ir order to make this work. Also, I need this application to run on startup. Any help/tips regarding this? In advance, thank you very much for your help! Regards, Pedro

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• How do I protect myself?

  - by ved

  I was poking around at my work computer this evening and was looking at my timesheets. I noticed that all my timesheets had variables in the URLs and I could figure out the numbering scheme for the pages. Then I got a little curious about SQL injection and thought of trying out adding simple SQL injections like "OR 1=1" etc. to see how protected we really were with our timesheet info. One of these strings yielded a friendly error page saying that an error email was sent to the developer. I am concerned that my ID, and request will be seen by the developer , immediately recognized as SQL injection and will be reported to network security officer as a malicious attempt by an employee to hack the timesheet dB. what is my defense? I am really worried.

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• Efficiency of while(true) ServerSocket Listen

  - by Submerged

  I am wondering if a typical while(true) ServerSocket listen loop takes an entire core to wait and accept a client connection (Even when implementing runnable and using Thread .start()) I am implementing a type of distributed computing cluster and each computer needs every core it has for computation. A Master node needs to communicate with these computers (invoking static methods that modify the algorithm's functioning). The reason I need to use sockets is due to the cross platform / cross language capabilities. In some cases, PHP will be invoking these java static methods. I used a java profiler (YourKit) and I can see my running ServerSocket listen thread and it never sleeps and it's always running. Is there a better approach to do what I want? Or, will the performance hit be negligible? Please, feel free to offer any suggestion if you can think of a better way (I've tried RMI, but it isn't supported cross-language. Thanks everyone

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• Redundancy algorithm for reading noisy bitstream

  - by Tedd Hansen

  I'm reading a lossy bit stream and I need a way to recover as much usable data as possible. There can be 1's in place of 0's and 0's in palce of 1's, but accuracy is probably over 80%. A bonus would be if the algorithm could compensate for missing/too many bits as well. The source I'm reading from is analogue with noise (microphone via FFT), and the read timing could vary depending on computer speed. I remember reading about algorithms used in CD-ROM's doing this in 3? layers, so I'm guessing using several layers is a good option. I don't remember the details though, so if anyone can share some ideas that would be great! :) Edit: Added sample data Best case data: in: 0000010101000010110100101101100111000000100100101101100111000000100100001100000010000101110101001101100111000101110000001001111011001100110000001001100111011110110101011100111011000100110000001000010111 out: 0010101000010110100101101100111000000100100101101100111000000100100001100000010000101110101001101100111000101110000001001111011001100110000001001100111011110110101011100111011000100110000001000010111011 Bade case (timing is off, samples are missing): out: 00101010000101101001011011001110000001001001011011001110000001001000011000000100001011101010011011001 in: 00111101001011111110010010111111011110000010010000111000011101001101111110000110111011110111111111101 Edit2: I am able to controll the data being sent. Currently attempting to implement simple XOR checking (though it won't be enough).

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• How Can I Automatically Execute A Link In Internet Explorer

  - by Martin

  I am trying to create an application to print documents over the web. I have created my document, and made a web page with a meta refresh tag, along the lines of this: <meta http-equiv="refresh" content="3;http://example.com/download.epl2" /> I specify that the document has a content-type of application/x-epl2, and I have associated .epl2 files on my computer with a program that silently sends them to the printer. I have put the website into my trusted sites zone. Currently Internet Explorer pops up the "Open, Save, Cancel" dialog box with no option to automatically open the file. Is there a setting in IE6/7/8 that I can use to have IE just open the file without prompting?

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• Interested in embedded systems. Where to begin?

  - by Ala ABUDEEB

  Hello, i'm a computer systems engineering student. i'm interested in designing embedded systems but i don't know where to begin learning this, and what topics are essentially needed to proceed in this domain. So can you please tell me what topics do i have to study, and what books are available there in market or online that can help me??? please help me p.s. normally as an engineering student i have basic knowledge of circuit theory and microcontroller realm. thank you in advance.

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