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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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• What are the best programming websites on the web?

  - by lajoo

  Ok,lets have a big list here,write about the best programming websites you have approached and a description of them and they'll be added here.i'll write some websites for now: UVA Online Judge a bunch of useful programming problems are there that you could use to improve your programming. Prgrammers Heven Resources for different programming languages. SourceForge This site Has lots of open source programs available for download,it's a must-go site for a programmer. W3Schools This Websites has all you need to learn about Web-designing Languages like Java Script,Css,PHP,HTML,.... Note:This is not an advertising topic,it's just a guide for programmers to find what they need.

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• Is there a SQL Server error numbers C# wrapper anyone knows of?

  - by Mr Grok

  I really want to do something useful when a PK violation occurs but I hate trapping error numbers... they just don't read right without comments (they're certainly not self documenting). I know I can find all the potential error numbers at SQL Server books online but I really want to be able to pass the error number to some helper class or look it up against a Dictionary of some sort rather than have non-descript err numbers everywhere. Has anyone got / seen any code anywhere that encapsulates the SQL Server Error numbers in this way as I don't want to re-invent the wheel (or I'm lazy maybe).

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• A column insert or update conflicts with a rule imposed by a previous CREATE RULE statement.

  - by Ronnie Chester Lynwood

  hello. im working on a online game. i got some problems with inserting new data to table. im getting 2010-4-8 2:14, *** 37000, 513, [Microsoft][ODBC SQL Server Driver][SQL Server]A column insert or update conflicts with a rule imposed by a previous CREATE RULE statement. The statement was terminated. The conflict occurred in database 'KN_online', table 'ACCOUNT_CHAR', column 'strAccountID'., 261 NationSelect*** this error in logs. what does this means? how can i fix this? i've tried to delete RULE for my DB but I'm unable to delete RULE. im getting the rule 'dbo.unallowedchars' cannot be dropped because it is bounded to one or more clumn. I set all permissions right but its still not working.. thanks..

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• ssh-keygen accepting stdin

  - by Ryan

  I am trying to call ssh-keygen using a variable through bash as an input instead of a file to get a fingerprint of a public key. This method does not work as it says the key file is invalid (it's correct for sure) echo $pubkey | ssh-keygen -lf /dev/stdin This does work ssh-keygen -lf /dev/stdin < alpha.pub This does not work because I get an ambiguous redirect ssh-keygen -lf /dev/stdin < $(echo $pubkey) I would appreciate some insight as to how to get ssh-keygen to read from a variable with a public key and if possible, an explanation as to why the redirects aren't doing what I think they should be doing. I searched online but many of the redirect tutorials didn't seem to answer my questions.

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• How can I make a URL Shortener in Visual Basic that uses and URL Shortener API?

  - by Andrew

  I want to make a URL Shortener that uses and Online URL Shortener API I want to use this api here - http:// cut2.tk/api-about.php So the api code is this http://cut2.tk/api.php?url= LONG URL HERE I want to use an User Form with 2 TextBoxes and two Buttons The first button is to short URL and the second to copy the Short URL from the second textbox The First Textbox is where Im going to paste the long url, and the second textbox is where im going to get the short url after i press the Short URL button Like this: Can anyone pass me the project or the code please? Thanks in advance Im using Microsoft Excel Developer Visual Basic

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• what are the advantages of C# over Python

  - by Matt

  I like Python mostly for the great portability and the ease of coding, but I was wondering, what are some of the advantages that C# has over Python? The reason I ask is that one of my friends runs a private server for an online game (UO), and he offered to make me a dev if I wanted, but the software for the server is all written in C#. I'd love to do this, but I don't really have time to do multiple languages, and I was just after a few more reasons to justify taking C# over Python to myself. I'm doing this all self-taught as a hobby, btw

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• Bind xaml vector images dynamically

  - by Carl

  I'm looking for a way to bind xaml images dynamically in code. There are lots of examples online to show how to bind png or xaml images in the window's xaml, or to load png files in code. But I have found no examples for xaml files with build action=page. XmlReader can't handle them since they are compiled to baml. LoadComponent(new Uri("...filename.xaml") will apparently load the baml but what kind of image class do I load this into? BitmapImage(new Uri("...filename.xaml") does not seem to work, probably because it's not a bitmap. Thanks in advance.

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• microsoft certification in c# 3.5 and its tutorials

  - by user238284

  i am 2010 passed out. i am interested in completing a certification in c#. certifications available are MCTS Exam 70 536 (for framework 3.5 / 2) and MCTS Exam 70 515(for framework 4.0). wer wil i get its proper study material and tutorials. is there any recommendation from u about, from which exam a beginner in c# should start with.. please help me ....... **thanking u** http://www.microsoft.com/learning/en/us/certification/cert-vstudio.aspx#tab2 http://en.csharp-online.net/CSharp_Certification%2C_Development%2C_and_Training

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• PHP Thumbnail image generator works, but consistently awaits 90% of its loadtime! Why?

  - by Sam

  Hi folks, This is the follow-up question from this general page load speed question. This question which will focus only, entirely and specifically on the thumbnail generator PHP code with the question: What's causing the 97% delays on these tiny thumbnails? Measuring only 3 ~ 5 kb each, this is strange indeed! Even after 7 orso bounty-rounds and 100 upvotes, the images are still doing nothing for over 97% of the time. It works allright, but it could be so much faster! ZAM, my pet robot, was so annoyed by not knowing why, he just pulled out some cords! Silly metal box... (I have asked permission from the original author, to put temporarily segments of the code online that I think could be the problem, after which I will remove all code, except the several lines that were the direct cause of this issue here to match the answer. This will be the free opportunity to perfect/speedup his otherwise already to my opinion vert versatile and userfriendly thumbnail generator.)

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• Code to make div appear after a certain amount of time.

  - by user307783

  Hi, I'm looking for code that makes a div appear after a certain amount of time on a site. Here's the sort of thing I'm talking about: <div class="container"> <div class="secretpopout"> This is the div I want to pop out after a couple of minutes. </div> </div> I'm relatively new to javascript and jQuery, but I'm assuming I will need to use the setTimeout or something similar. I've tried finding the answer online, but if someone could explain it in a way a designer (as opposed to a programmer) would get it, that would be great - ANY LIGHT shed on this would be greatly appreciated. Thank you.

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• Clickone + .net client profile framework + sql compact + offline installation

  - by grimmersnee

  am having issues with prerequisites while trying to publish my windows .net 3.5 application using clickonce. I am wanting my application to work offline as well as online, so I want to include the prerequisites in the installation and not make client download them via the internet. My prerequisites are: .Net Framework Client Profile SQL Compact 3.5 I have downloaded the .Net Framework Client Profile Offline Installer. Installed it and put the DotNetFx35Client.exe in this location: C:\Program Files\Microsoft SDKs\Windows\v6.0A\Bootstrapper\Packages\DotNetFx35Client Under the Project - Publish Tab I have checked the "Download prerequisites from the following location" and entered \MachineName\Program Files\Microsoft SDKs\Windows\v6.0A\Bootstrapper\Packages\DotNetFx35Client Following http://stackoverflow.com/questions/1046370?tab=oldest#tab-top I am however still the error: The install location for prerequisites has not been set to 'component vendo's website' file Dotnetfx35client\Dotnetfx35clientSteup.exe' in item .net framework client profile can not be located on disk.

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• is jQuery 1.4.2 compatible with Closure Compiler?

  - by Mohammad

  According to the official release statement version 1.4 has been re-written to be compressed with Closure Compiler yet when I use the online version of closure compiler I get 130 warnings. This is the code I use. // ==ClosureCompiler== // @compilation_level ADVANCED_OPTIMIZATIONS // @output_file_name default.js // @code_url http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.js // ==/ClosureCompiler== And as far as I know you get the real benefit of Closure Compiler if you include the library with your code also, so it removes the unused functions. Yet my testing show that I can't get any further than compressing the library itself.. What am I doing wrong? Any kind of insight will be much appreciated.

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• Good learning resources for JNDI implementation (JBoss 5)

  - by iandisme

  I have been working with JavaEE/EJB3 web apps for about half a year now. Until recently, I haven't had to touch a lot of the behind-the-scenes stuff, just the meat of the code. I have been wrestling with JNDI problems, and though I've solved a couple of them, I'm pretty much just doing the whole cargo cult copy-paste routine. It would really help me to better understand JNDI; my understanding of it right now can be summarized as "it's that thing these classes sometimes do to find other classes." My question is, has anyone had success learning JNDI/EJB3/related topics from a book or online content? I've googled for it but the stuff that comes up is old or specific to a certain framework I'm not using. I'm looking for something that's either JBoss-specific or generic enough to be useful anyway.

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• Facebook - using an external flash application to connect via PHP

  - by Anonymous

  So, I have this application that needs to connect to facebook. It uses php for all of its data access, in older examples of the facebook API, i see people get the UID, and sessionkey from the iframe page, then send them to php and run a function called $facebook-setUser($UID, $sessionKey). This is how the majority of the tutorials online are doing it. That would be great, except the newest facebook API doesn't have any function like that. I have been scouring the web for 2 hours and have found nothing relating to the disappearance of this seemingly critical function. So, I have a flash application that needs to authenticate via a stateless php resource. I would love it if my PHP code could be completely uncaring if the request originated from flash, or iphone, or another application altogether-it should just need userId and and sessionKey. Is this still possible? Thank you in advance for your help! :)

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• send email notifications to entrants of my contest form using php

  - by Zeljko Radic

  I am really stuck with the following issue and your assistance would be appreciated. Here is the deal. I have a contest form at http://www.beogradstore.com/mn/contest/main-contest/. Btw, I use WordPress contest domination plugin. So I want entrants of the contest to receive email notifications whenever they receive reward entries. After they enter the contest, they will receive referral link, which they can share online and whenever someone enters the contest with that referral link, the owner of the referral link will receive 10 new contest entries. What would be the easiest way to accomplish this?

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• Must See Conference Videos for Python/Django Developers

  - by Koobz

  There's lots of good conference videos online regarding Python and Django development. Instead of watching ST:TNG at the computer, I figure it'd more productive to hone my knowledge . Fire away with some of your most inspiring and educational Python, Django, or simply programming related talks. Provide an explanation of why you found the talk useful. Examples: James Bennet on Re-usable Apps - Got me to take a serious look at django apps. Put together a fairly robust site in two days afterwards with django-cms, django-photologue, django-contact-form. Good advice on when your app is crossing boundaries and why it's good to err on the site of 'make it a separate app.'

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• Advice on e-commerce logging strategy

  - by yalestar

  I recently inherited an e-commerce app (Java/Struts) that I'm porting to Rails. The thing is, we frequently have to do forensics on orders by poring through the log files, and with the old app's logs (log4j wall of text) it's pretty hard to make sense of the individual orders when several people are placing orders simultaneously. So I'm soliciting advice on a good strategy for logging of these orders, like maybe logging each individual order to its own MongoDB collection based on unique cart ID? Or maybe group them by IP address? Something different entirely? Essentially, what is the best approach for logging of an online store so that it's easy to backtrace each user's interaction with the site?

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• Using a WinForm as a Windows Installer Custom Action

  - by Serexx

  Hello - I am working on in installer project that needs to gather some info and act on it during the install (mainly online key retreival and registration). The Setup Project UserInterface templates seem inflexible and poorly documented so I am looking at opening a WinForm as a Custom Action. I know this is possible because I see reference to it in many places but this is my first Windows Installer experience and so far it is mired in googled contradictions, partial or outdated information and guesswork... erg.... Does anyone have (even a pointer to) a clear concise description of how one gets this done in a VS 2008 WinForm project... Many thanks for inputs

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• Flashing and closing PyS60 SIS

  - by Matrich

  I created a py script for S60 2nd Edition FP3 with a background image, database, sound files which are stored in a folder on c drive. After several hours, I have managed to convert it into sis which I sent to my mobile phone. First, I installed the sis on the external memory and it failed to work. I read online that it should be on the same drive as python runtime. So I installed it on phone memory but it just flashes and then closes. I made another sis with a database and it worked so I suspect it could be because it cant find the background image and sound files in the folder. How can I know the cause of this? Also, how can I include the background image and sound files with the sis so that they are automatically installed when installing the sis file?

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• Best free site/blog to put video tutorial

  - by nash

  Hi, i am planning to upload a video tutorial on a particular software technology. The size of the videos will be around 600 MB's to say 1 GB. I am putting it for free for anyone to download. Is there any site/blog where i can put it.I am planning to divide the videos in parts and zip them. Does blogger or any other cms allow me to upload to there sites and put download links? Or is buying web space the only option? I am not keen on using youtube as i clearly want the user to download by clicking on links and not watch them online. Also i was thinking of just uploading the videos on rapidshare/megaupload/mediafire... and put just links on a blogger post. Any suggestion from you guys?

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• A realistic and usable (VS2010) MVC2 project template?

  - by pomarc

  Hello. everybody. The default MVC2 web project template which VS2010 creates when you select "ASP.NET MVC2 Web Application" is quite a nice start... but nowhere near a realistic app framework. E.G.: user accounts without such features as password recover easily customizabile (and maybe multilingual) error messages an interface to manage users, such a searcheable user list, user edit and so on which an admin can use and these are just the beginning of the usual, mandatory basic features a web site of any size may use. Searching through the online projects templates doesn't seem to help, ehiter. Are there any project template sites or else that you are aware of, that gives such features? thanks a lot!

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• regex jquery remove all double spaces

  - by michael

  Hi I have this code, I want it to remove all the double spaces from a text area, but it will only remove the first occurrence each time. $(document).ready(function(){ $("#article").blur(function(){ ///alert($(this).val()); $(this).val($(this).val().replace(/\s\s+/, ' ')); }); }); I've also tried removeAll(), but it won't work at all. any help would be great, thanks. I have a live example online at http://jsbin.com/ogasu/2/edit

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• What to know - for building a form with PHP and MySQL

  - by Tal Galili

  Hello all, I have three weeks to perform the following basic task. I wish to create an online form in PHP that will get 5 numbers and with them: save the numbers to a MySQL DB do a simple computation on the numbers and return them as an output to the visitor I already have a domain, hosting and a MySQL database+user. I don't know PHP, or SQL or databases. I do have prior knowledge in C and R (which means I have some of the basics of programming, and I am not intimidated of a new languages). My question are: Am I missing something? is there some other skill I should have for this task that I don't know of? What is a good way to learn the skills needed for the task I described? Hope the question isn't too basic/general. Thanks!

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• Good way to cache data during Android application lifecycle?

  - by sniurkst

  Hello, keeping my question short, I have creating application with 3 activities, where A - list of categories, B - list of items, C - single item. Data displayed in B and C is parsed from online XML. But, if I go trough A - B1 - C, then back to A and then back to B1 I would like to have it's data cached somewhere so I wouldn't have to request XML again. I'm new to Android and Java programming, I've googled a lot and still can't find (or simply do not have an idea where to look) a way to do what I want. Would storing all received data in main activity A (HashMaps? ContentProviders?) and then passing to B and C (if they get same request that was before) be a good idea?

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