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• Can you explain to me git reset in plain english?

  - by e-satis

  I have seen interesting posts explaining subtleties about git reset. Unfortunately, the more I read about it, the more it appear that I don't understand it fully. I come from a SVN background and git is a whole new paradigm. I got mercurial easily, but git is much more technical. I think git reset is close to hg revert, but it seems there are differences. So what exactly does git reset do? Please include detailed explanations about: the options --hard, --soft and --merge; the strange notation you use with HEAD such as HEAD^ and HEAD~1; concrete use cases and workflows; consequences on the working copy, the HEAD and your global stress level. I will put a bounty on this ASAP cause it's really important and I find the git doc cryptic. Holly blessing and tons of chocolate/beer/name_your_stuff to the guy who makes a no-brainer answer :-)

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• VS2010, VSS and post-commit hook?

  - by David Lively

  I'm using Visual Studio 2010 and VSS. Yes, I know VSS sucks. Hard. I'm attempting to force a move to TFS (since SVN integration with Expression and Sharepoint Designer is near impossible without forcing non-technical content managers to use TortoiseSVN), but that will not happen in the short term. I'm working with a local copy of the (classic ASP 3.0) site, and need to publish individual files to a web folder on our dev server whenever I check in a file so that the changes can be seen by other interested parties without having to publish from VSS. Does anyone know of a convenient way to add a post-commit script with VSS? It's acceptable for this script to run on my dev box (as opposed to the server), considering that VSS has no server to execute such actions.

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• .Net friendly, local, key-value pair, replicatable datastore

  - by Brad Mathews

  I am looking for a key/value type datastore with very specific requirements. Anyone know anything that will work? Needs to be a component of some sort. No additional installation needed. The datastore needs to be on the local hard drive. I am using VB.Net for a desktop app running Windows XP through 7 so it needs to callable by that environment. It needs to replicatable. If I have four copies of my app running on the network, each local copy of the datastore needs to replicate with the others. As close to real time as possible. The first three are easy, I can do that with ADO.Net out of the box. The last one, replication, is the one I do not have answer to. Does such an animal exist? Thanks, Brad

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• Can I have a shell alias evaluate a history substitution command?

  - by Brandon

  I'm trying to write an alias for cd !!:1, which takes the 2nd word of the previous command, and changes to the directory of that name. For instance, if I type rails new_project cd !!:1 the second line will cd into the "new_project" directory. Since !!:1 is awkward to type (even though it's short, it requires three SHIFTed keys, on opposite sides of of the keyboard, and then an unSHIFTed version of the key that was typed twice SHIFTed), I want to just type something like cd- but since the !!:1 is evaluated on the command line, I (OBVIOUSLY) can't just do alias cd-=!!:1 or I'd be saving an alias that contained "new_project" hard-coded into it. So I tried alias cd-='!!:1' The problem with this is that the !!:1 is NEVER evaluated, and I get a message that no directory named !!:1 exists. How can I make an alias where the history substitution is evaluated AT THE TIME I ISSUE THE ALIAS COMMAND, not when I define the alias, and not never? (I've tried this in both bash and zsh, and get the same results in both.)

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• XHtml Strict, Float: Center ?

  - by Axel Myers

  Hi everyone. I'm having hard time with Xhtml Strict 1.0 and Css. And I'm almost out of solutions. My Site Url: http://www.pro-turk.net/beta/ I made a jquery multilevel dropdown menu for my site. It looks like OK, but I have used inline-block property of css display attribute on navigation menu which is a part of css 2.1 and isn't supported by some browsers (including ie6 and ie7). I want to make #nav li elements block level elements, but to do this and having all of them in same line, the only way is using float in #nav li. But I want to center them in their parent (the menu bar). So I need something like float:center (I know it's pretty stupid and doesn't exist). But is there a way to include block level elements as children elements without linebreaks (I mean without making a block level element). Regards.

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• Question about spring manning-in-action

  - by Gandalf StormCrow

  I saw people asking about best book for learning spring, and I came across manning.spring in action was recommended most of the time so I decided to give it a go. The thing is the author offers some pretty reasonable explanations, puzzle by puzzle it gets in your head, than you just need to code it and you're done, you get it(this is how I work don't know about the others). When it comes to the code its very disapointing, I went trought the Knight example like 2 or 3 times by now and I see its incorrect in the book, I mean its hard already for people eager to learn and why not a note somewhere in the book like pseudo-code or something. The knight example in the first chapter is missing two classes QuestFailedException and HolyGrail I mean other people must have noticed this, why is everyone recommending this book without saying at least it has some errors(like many others do), was anyone actually been able to compile and this first chapter example?

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• Why aren't double quotes and backslashes allowed in strings in the JSON standard?

  - by Dan Herbert

  If I run this in a JavaScript console in Chrome or Firebug, it works fine. JSON.parse('"\u0027"') // Escaped single-quote But if I run either of these 2 lines in a Javascript console, it throws an error. JSON.parse('"\u0022"') // Escaped double-quote JSON.parse('"\u005C"') // Escaped backslash RFC 4627 section 2.5 seems to imply that \ and " are allowed characters as long as they're properly escaped. The 2 browsers I've tried this in don't seem to allow it, however. Is there something I'm doing wrong here or are they really not allowed in strings? I've also tried using \" and \\ in place of \u0022 and \u005C respectively. I feel like I'm just doing something very wrong, because I find it hard to believe that JSON would not allow these characters in strings, especially since the specification doesn't seem to mention anything that I could find saying they're not allowed.

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• Measuring Web Page Performance on Client vs. Server

  - by Yaakov Ellis

  I am working with a web page (ASP.net 3.5) that is very complicated and in certain circumstances has major performance issues. It uses Ajax (through the Telerik AjaxManager) for most of its functionality. I would like to be able to measure in some way the amounts of time for the following, for each request: On client submitting request to server Client-to-Server On server initializing request On server processing request Server-to-Client Client rendering, JavaScript processing I have monitored the database traffic and cannot find any obvious culprit. On the other hand, I have a suspicion that some of the Ajax interactions are causing performance issues. However, until I have a way to track the times involved, make a baseline measurement, and measure performance as I tweak, it will be hard to work on the issue. So what is the best way to measure all of these? Is there one tool that can do it? Combination of FireBug and logging inserted into different places in the page life-cycle?

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• Single Page Navigation w/ Javascript and Back Button

  - by Khan

  Ok, so I have a "navigation" div and "content" div. When something on the navigation is clicked, I fade in the content div with the new data. Now, I would like to have the old data returned when the user hits the "back" button on his/her browser, but I'm having a hard time doing this. I know I can set the content to be a named anchor, so they stay on the same page with a breadcrumb trail. However, that's as far as I get. Can I listen for a back button click? Can I set content to display when a certain anchor name is reached? Thanks in advance for your help, SO.

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• Screenshot of the Nexus One from adb?

  - by Marcus

  My goal is to be able to type a one word command and get a screenshot from a rooted Nexus One attached by USB. So far, I can get the framebuffer which I believe is a 32bit xRGB888 raw image by pulling it like this: adb pull /dev/graphics/fb0 fb0 From there though, I'm having a hard time getting it converted to a png. I'm trying with ffmpeg like this: ffmpeg -vframes 1 -vcodec rawvideo -f rawvideo -pix_fmt rgb8888 -s 480x800 -i fb0 -f image2 -vcodec png image.png That creates a lovely purple image that has parts that vaguely resemble the screen, but it's by no means a clean screenshot.

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• ASP.NET MVC Authentication Cookie Not Being Retrieved

  - by Jamie Wright

  I am having a hard time implementing "Remember Me" functionality in an MVC application with a custom principal. I have boiled it down to ASP.NET not retrieving the authentication cookie for me. I have included a snaphot below from Google Chrome. Shows the results of Request.Cookies that is set within the controller action and placed in ViewData for the view to read. Notice that it is missing the .ASPXAUTH cookie Shows the results from the Chrome developer tools. You can see that .ASPXAUTH is included here. Does anyone know what the issue may be here? Why does ASP.NET not read this value from the cookie collection?

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• run windows command from bash with output to standard out?

  - by Wayne

  Folks, I'm using git tools such as git bisect run which need to call a command to build and test my project. My command to do is nant which is a windows program. Or a build.cmd script which calls nant. It's easy to get the bash to call the nant build to run. But the hard part is how to get the standard output written to a file? I even installed the Windows PowerShell to try running a command from bash. Again, it works but the standard output fill says "permission denied" when I try to read it while the build is going on.

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• github url style

  - by Alex Le

  Hi all, I wanted to have users within my website to have their own URL like http://mysite.com/username (similar to GitHub, e.g. my account is http:// github. com/sr3d). This would help with SEO since every profile is under the same domain, as apposed to the sub-domain approach. My site is running on Rails and Nginx/Passenger. Currently I have a solution using a bunch of rewrite in the nginx.conf file, and hard-coded controller names (with namespace support as well). I can share include the nginx.conf here if you guys want to take a look. I wanted to know if there's a better way of making the URL pretty like that. (If you suggest a better place to post this question then please let me know) Cheers, Alex

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• Django file uploads - Just can't work it out

  - by phoebebright

  OK I give up - after 5 solid hours trying to get a django form to upload a file, I've checked out all the links in stackoverflow and googled and googled. Why is it so hard, I just want it to work like the admin file upload? So I get that I need code like: if submitForm.is_valid(): handle_uploaded_file(request.FILES['attachment']) obj = submitForm.save() and I can see my file in request.FILES['attachment'] (yes I have enctype set) but what am I supposed to do in handle_uploaded_file? The examples all have a fixed file name but obviously I want to upload the file to the directory I defined in the model, but I can't see where I can find that. def handle_uploaded_file(f): destination = open('fyi.xml', 'wb+') for chunk in f.chunks(): destination.write(chunk) destination.close() Bet I'm going to feel really stupid when someone points out the obvious!

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• Which Programming Language Should I Learn?

  - by Esteban Araya

  I've decided, for educational purposes, I want to learn a new language every 2 years or so. Which language should I learn first? Why? I'm proficient with C, C# and Java. Other than that, I really haven't done much with any other languages. Thanks! Edit: Thanks to all of those that recommended functional languages. Making the mental switch to a functional language seems hard. How did you overcome your instinct to keep doing things in a procedural manner?

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• How Should I Print Documentation from Google Code?

  - by peter.newhook

  Google does a decent job of documenting their API (like Closure http://code.google.com/closure/compiler/docs/overview.html) but I find it hard to read because it's broken into such short pages. I like to leaf through my docs and read it on paper. Has anyone found a good way to print from the documentation on Google Code. It could be a PDF, or even just a long page with lots of content. Please note, I'm not talking about the Wikis in the Open Source side of Google Code. I'm referring to the API docs published by Google.

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• How to do a sample rate conversion in Windows (and OSX)

  - by Paperflyer

  I am about to write an audio file converter for my side job at the university. As part of this I would need sample rate conversion. However, my professor said that it would be pretty hard to write a sample rate converter that was both of good quality and fast. On my research on the subject, I found some functions in the OSX CoreAudio-framework, that could do a sample rate conversion (AudioConverter.h). After all, an OS has to have some facilities to do that for its own audio stack. Do you know a similar method for C/C++ and Windows, that are either part of the OS or open source? I am pretty sure that this function exists within DirectX Audio (XAudio2?), but I seem to be unable to find a reference to it in the MSDN library.

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• Best ways to collaborate with small number of people

  - by Mark Szymanski

  Hi, I am collaborating with someone on a project and currently use Skype for collaboration. I like it because we can be on a call to say things that are hard to say by typing out. We can share our screens so we can help with code writing. And we can use the text chat to copy-paste code between each other. We also use Subversion for version control. I just wanted to know what other people used for collaborating with others so I could see whats out there to use. Thanks!

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• Automating Visual Studio 2010 from a console app

  - by JoelFan

  I am trying to run the following code (which I got from here). The code just creates a new "Output" pane in Visual Studio and writes a few lines to it. Public Sub WriteToMyNewPane() Dim win As Window = _ DTE.Windows.Item(EnvDTE.Constants.vsWindowKindOutput) Dim ow As OutputWindow = win.Object Dim owPane As OutputWindowPane Dim cnt As Integer = ow.OutputWindowPanes.Count owPane = ow.OutputWindowPanes.Add("My New Output Pane") owPane.Activate() owPane.OutputString("My text1" & vbCrLf) owPane.OutputString("My text2" & vbCrLf) owPane.OutputString("My text3" & vbCrLf) End Sub Instead of running it as a Macro, I want to run it as an independent console application that connects to a currently running instance of Visual Studio 2010. I'm having a hard time figuring out how to set the value of DTE. I think I may need to call GetActiveObject, but I'm not sure how. Any pointers?

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• How to check for duplicate files?

  - by miorel

  I have an external hard drive on which I have backed up files several times. Some files were modified between backups, others were not. Some may have been renamed. Now I'm running out of space, and I'd like to clean up duplicate files. My idea was to md5sum every file on the drive, then look for duplicates, and diff the relevant files (just in case, haha). Is this the best way to do this? What are some other methods of checking for duplicate files?

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• Free SWF Obfuscator

  - by Cyclone

  Does anybody know of a free flash obfuscator? All I can find are commercial ones with free trials. I have done numerous google searches, and have been unable to find what I am looking for. I know that obfuscators do not make your swf hack proof, but they make things harder. Things I am looking for in an obfuscator: Unlimited obfuscations No time limit No watermark (or on the left side only! Right side is no good, same with center) Able to publish work (no special player needed other than standard flashplayer) I really was surprised to see how hard it was to find a good obfuscator (tried encoder, protection, etc. instead as well) and how easy it is to find a decompiler.... It is imperative that my code be protected, at least partially, to discourage the hacking of my game.

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• Setting up DomainKeys/DKIM in a PHP-based SMTP client

  - by Alex

  It looks like there are some great libraries out there to do DomainKeys signing of emails on C#/.NET, but I'm having a really hard time finding the same kind of support for PHP. Maybe I'm not looking in the right place? The only one I found is http://php-dkim.sourceforge.net/; it looks incredibly hacky and supports PHP4 only. Considering how popular PHP is, and how critical DomainKeys are for email classification as non-spam, I'd expect better tools; do you know of any? Any other tricks you'd recommend?

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• How can I Convert XML to an Object using Spring 3.0 mvc while making RESTful request

  - by brock

  Hi, I'm using the Spring 3.0 RC1 framework and I'm currently testing out Spring mvc. I wanted to use Spring mvc to handle restful requests. I have set up my controller to handle the URI request. I am passing in xml with the request. So on the controller I have a method like follows: public void request(RequestObject request) { doSomething(); } I am having a hard time converting the xml to the RequestObject. I haven't seen much documentation on this and I was wondering if anyone could point me in the right direction. I'm guess that you would have to annotate the RequestObject using JAXB or something in order to tell Spring to convert the xml file to RequestObject but I'm not sure. Thanks for all of your help!!

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• How to measure sum of collected memory of Young Generation?

  - by Marcel

  Hi, I'd like to measure memory allocation data from my java application, i.e. the sum of the size of all objects that were allocated. Since object allocation is done in young generation this seems to be the right place. I know jconsole and I know the JMX beans but I just can't find the right variable... Right at the moment we are parsing the gc log output file but that's quite hard. Ideally we'd like to measure it via JMX... How can I get this value? Thanks, Marcel

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• ZooKeeper and RabbitMQ/Qpid together - overkill or a good combination?

  - by Chris Sears

  Greetings, I'm evaluating some components for a multi-data center distributed system. We're going to be using message queues (via either RabbitMQ or Qpid) so agents can make asynchronous requests to other agents without worrying about addressing, routing, load balancing or retransmission. In many cases, the agents will be interacting with components that were not designed for highly concurrent access, so locking and cross-agent coordination will be needed to avoid race conditions. Also, we'd like the system to automatically respond to agent or data center failures. With the above use cases in mind, ZooKeeper seemed like it might be a good fit. But I'm wondering if trying to use both ZK and message queuing is overkill. It seems like what Zookeeper does could be accomplished by my own cluster manager using AMQP messaging, but that would be hard to get really right. On the other hand, I've seen some examples where ZooKeeper was used to implement message queuing, but I think RabbitMQ/Qpid are a more natural fit for that. Has anyone out there used a combination like this? Thanks in advance, -Chris

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