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• Can you please explain substitution in RewriteRule

  - by Scott

  I have the following statements in an .htaccess file RewriteCond %{HTTP_HOST} ^myOldDomain\.com$ [NC] RewriteRule ^(.*)$ https://myNewDomaink.com/$1 [R=301,L] It works fine. I basically found some sample code and modified it to my specific purpose. What I don't quite understand is: Why does $1 refer to the the portion of the supplied url after the hostname - where is the documentation for this? There is no backreference in the RewriteCond.

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• Firefox: substitute a font with another in any page

  - by kemp

  I'm using the stylish addon and it works great. However I would like to substitute a specific font - say Arial - with another of my choice every time it is found instead of setting a global font (which I don't like as I just want to substitute Arial) or using a stylish rule for every page. Is it possible to do this? Maybe with a greasemonkey script?

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• Cassandra on heterogeneous servers

  - by happy-coding

  I am currently running 4 cassandra nodes with the following hardware in a Apache Cassandra cluster: AMD Athlon 64 X2 6000+ 8G RAM 750G hard disk It shows not such a good writing performance and a really bad read performance with sometimes also timeouts. I was wondering if it makes sense to add 2 nodes with a different hardware (8 CPUs and more RAM) to improve this. Or does a cassandra cluster works best with the same hardware in every node? Thanks & best regards

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• How to call regular JS function with params within jQuery ?

  - by Kim

  Is there another way to run a regular JS function with params passed than what I use below ? It seems redundant use a on-the-way function to do this. function regularJSfunc(param1,param2) { // do stuff } $(document).ready(function(){ $('#myId').change(function(){ regularJSfunc('data1','data2'); }); } Using a .bind event seems much better, however I am not sure how to access the params. Note: Example below doesnt work. $(document).ready(function(){ $('#myId').bind('change',{'data1','data2'},regularJSfunc); }

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• Suggestions for a mashup application

  - by Raffo

  I have to write a mashup application for an university course and I have to use some APIs, but I need to choose by myself what to use and what the final application should do. Unfortunately I never made an application like this, so I'm not sure what to do... I don't want to code a stupid app which uses google maps' APIs since the web seems to be full of stuff like this. Have you got any suggestion for me? Is there any mashup web app you want that's still not there?? I can use JAVA, GWT (and google app engine of course) or python, but I also accept suggestions for other languages. Thank you in advance!

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• Send Keyboard Events from one Form to another Form

  - by thalm

  Hello, my question is quite simple: Our C# application has one MainForm with a menu and several keyboard shortcuts associated with the menu entries. Now we need to trigger the menu entries from some child forms too. But since the MainForm is inactive when one of the child forms is active, the shortcuts do not work. Is there a simple way to propagate all keyboard events from the child form to the 'Owner' form? Or just to another form in general? Ah, and we cannot use some low level windows stuff, because we need to run the application on Mono/Linux too.

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• Memory Allocation - Arduino

  - by Joey Arnold Andres

  I'm new to this low level stuff. I'm currently learning arduino. I'm currently using an Arduino Mega 2560 and in our course we are practicing memory management. I'm a pro at memory management in pc but somehow I'm having crazy problems here in arduino. For instance: The arduino have 8192B, I'm trying to overflow it with uint_16 so I made an array of 8192/16 which is 512. so I did uint16_t A[512+1]; Well I expected that to cause an overflow. What is wrong with my concept?

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• What should I grab as a development platform, an iPod or an iPad?

  - by mmr

  Hey all, I've recently gotten into the world of contract programming, and two of my clients have indicated that they'd like to do something 'trendy', like ipod touch/iphone/ipad development. I have a mac laptop (first gen macbook pro) that I'll have to upgrade to snow leopard to do the development for any of them, from what I've read. So that's already a bit of a commitment, given all the stuff I have on that laptop I'll have to make sure is recoverable from backup. My budget is limited, but I think I need to learn this skill. Which device should I get to learn this kind of development, an iPod touch or an iPad? I don't have the money for an iPhone. I think that the iPhone/iPad SDK has an emulator mode, but I like to have the device I'm going to roll out on available to make sure that everything works as I'd expect, ie, what's easily readable on a laptop screen is still readable on the touch, etc.

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• In MS SQL Server, is there a way to "atomically" increment a column being used as a counter?

  - by Dan P

  Assuming a Read Committed Snapshot transaction isolation setting, is the following statement "atomic" in the sense that you won't ever "lose" a concurrent increment? update mytable set counter = counter + 1 I would assume that in the general case, where this update statement is part of a larger transaction, that it wouldn't be. For example, I think this scenario is possible: update the counter within transaction #1 do some other stuff in transaction #1 update the counter with transaction #2 commit transaction #2 commit transaction #1 In this situation, wouldn't the counter end up only being incremented by 1? Does it make a difference if that is the only statement in a transaction? How does a site like stackoverflow handle this for its question view counter? Or is the possibility of "losing" some increments just considered acceptable?

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• What fields have job security?

  - by computergeek6

  I can program pretty well, and I'm trying to think of a programming area that I can practice so I have a better chance of getting a job when I finish my education. I'm currently learning game development, but there are a ton of other people trying to get into game dev, so I want to find something a little more secure and sustainable to develop skills in. I've thought of things like financial systems and engineering stuff, but nothing I can think of is accessible to someone in high school. I'm trying to find something that involves physics or networking and isn't as popular a field as game dev. Does anyone have any ideas?

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• Do I need to include the 'this' when using a property name in a closure?

  - by Scott Whitlock

  I'm using a list of Actions to store an undo history for an object. Let's say I have a property of my object called myChildObject and it's being changed, so I want to store the undo action where I would set it back to it's current value: public class Class1 { public Class1() { } private readonly List<Action> m_undoActions = new List<Action>(); private SomeObject myChildObject { get; set; } public void ChangeState(SomeObject newChildObject) { // copies the reference SomeObject existingObject = myChildObject; m_undoActions.Add(() => myChildObject = existingObject); myChildObject = newChildObject; } } Looking at the lambda expression, existingObject is a local variable, so it's using a closure to pass a reference to that variable, but what about the property myChildObject? Do I need to use 'this' to preface it? Do I need to make a copy of the 'this' reference to a local variable first? Thanks for helping me understand this closure stuff.

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• Can Mozilla Thunderbird show sent replies in threaded view?

  - by Colin Dean

  I would like for Thunderbird to show replies to threaded messages in with the received messages. Is this possible, even with an extension? The desired behavior would be something like how Zimbra's threaded email view works.

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• How to sync bookmarks across Google Chrome and Mozilla Firefox bookmarks?

  - by ViliusK

  How to sync bookmarks across Google Chrome and Mozilla Firefox bookmarks? As I, currently, understand, Google Chrome puts bookmarks seperatly from Google Bookmarks, which is accessible in Firefox by using Google Toolbar for Firefox. Right? So how should I synchronize my browsers? I use Google Chrome as my primary browser and it works good and bookmarks are synchronized across number of computers I'm using. Thanks, viliusk

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• 2Wire USB Network Adapter Not Working With Windows 7

  - by Andrew

  I installed Windows 7 on a separate drive, and everything works fine, but I can't get the above network adapter to work properly. It's displayed in Device Manager as a USB device, and I have the driver that makes it function in Vista, but when I run the Driver Wizard and direct it to directory where I have the Vista driver, it almost immediately says "Can't install driver." Is there any work around to this?

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• How am I supposed to deploy an ASP.NET MVC 4.0 website?

  - by Matt Frear

  What's the recommended way to deploy a website created with ASP.NET 4.0 and Visual Studio 2010? I've previously always added a web setup project to my solution, and used that to create an MSI, even for small applications. But when I build a web setup project in VS2010 it kind of works but some stuff still seems broken: 1. I need to turn on IIS 6 Compatibility on a Win 2008 R2 box to get the msi to run. 2. The msi includes web.config, web.debug.config, and web.release.config. I thought VS's web.config transformations was supposed to take care of that. -Matt

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• Cherry-picking from git to svn (or, How to keep a project history in git and releases in svn)

  - by Jawa

  I'm in a position where I'm the only one using git, everybody else is using svn. I've used 'git svn' to connect to the team svn and mostly it works just fine. Lately, I've started a project initially on my own, separate git repo and now I need to merge stuff from it to the svn. However, I still would like to keep tweaking the implementation in my own privacy between releases. So, what would be the most straightforward way to cherry-pick some commits from my private repo to the svn-cloned repo? Requirement is to keep full local history and have only one svn commit for each pick. Or is there some squashing to be done? As a method to achieve this, is there a way to get the private repo as another origin for the svn-cloned repo?

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• Virtual Hard Drive not booting - VMWare

  - by Chloraphil

  I have a .vmdk (VMWare hard disk) file that I cannot use as the lone disk in a new virtual machine. If I attach it to an existing virtual machine then it works fine. It has Windows Server 2003 on it. When I attempt to boot the new VM it attempts a network boot. EDIT: VMWare Workstation 6.5 I could not find a PXE option in the settings, and I did look in the VM config file for "PXE" but did not find one.

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• Good book suggestions for building enterprise software

  - by ncoder

  Enterprise software are built using technologies/softwares/terminologies/APIs such as EJB, JBoss, Seam, Hibernate(JPA), Maven, Eclipse, Spring, JTS, JMS, JNDI etc. I know there are great books out there for each of these individually, however can someone suggest a book or two that covers all (or most of) these topics in lesser detail and gives examples of how these are integrated? I have intentionally left the client side stuff out because its highly unlikely a single book would cover that much. If anyone knows of a book (or books) that cover most of or various combinations (like EJB, Hibernate, Spring and Seam) of these technologies, please do suggest the same. The idea is not to become an expert in all however know about them in reasonable detail and why each one is required.

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• Passing variables to callback functions

  - by mickyjtwin

  I am trying to write a jQuery plugin, that can be applied to a selector. Within this plugin, there are multiple calls to webservices, where callback methods are required. The problem I am having is maintaining the current context item in the each loop of the selector. (function($){ $.fn.myMethod = function(){ return this.each(function(){ var c = $(this); $.api.methodToCall("", CallbackFunction); }); }; function CallbackFunction(data, result){ // do stuff based on c } })(jQuery); Normally, you would provide the callback function straight away, which allows me to access c, however within the callback function, there potentially is another api call, so it would start to get messy. Is there any way to do this?

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• preg_match problem

  - by Biroka

  I'm trying to get some stuff from a string in php. In RegexBuddy and Regular expression tester (firefox addon) it works good, but php gives me the following: Warning: preg_match() [function.preg-match]: Compilation failed: unmatched parentheses at offset 34 in D:\path\example.php on line 62 my pattern is "/.{4}_tmp\\([A-Za-z0-9.\\]*)\(([0-9]*)\) : (.*)/i" an example string: C:\Temp\browseide\projects\32\821C_tmp\SourceFiles\main.c(8) : error C2143: syntax error : missing ';' before 'for' what RegexBuddy gets: 821C_tmp\SourceFiles\main.c(8) : error C2143: syntax error : missing ';' before 'for' Group 1: SourceFiles\main.c Group 2: 8 Group 3: error C2143: syntax error : missing ';' before 'for'

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• Maintaining session across relay domain?

  - by Steffen

  I'm building a payment page in asp.net, however the page where you order your items is run in HTTP (non-secure) on my domain. When redirecting the user to the payment site, I have to go through a different domain (my payment provider, from whom I borrow the SSL certificate), so my payment url ends up like https://www.paymentprovider.com/somescript.cgi/www.mydomain.com/mypaymentpage.aspx Now the problem is my session is lost, but I store the order in session, so I desperately needs it. Can I somehow send the SessionID in querystring, and restore the session from it - or do I need to stuff the entire order into querystring ? (Not too certain it'll fit though, it's rather long) Any help will be highly appreciated :-)

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• Having problems loading Ubuntu on my external Hard Drive

  - by anonymous

  I installed Ubuntu on my external hard drive but it won't boot on my laptop. It works fine on my desktop but not my laptop. It says it can't find root... what do i do?

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• Solution for secure online remote presentation?

  - by Greg Joshner

  Hello, what is your (subscription free) solution to share a presentation with a number of users (below 50) that works without plug-ins in a browser and allows the presentation to be centrally controlled (and thus prevents participating users from "flipping forward")? I won't need print, save as or offline features, just showing and controlling a presentation centrally. Thanks a lot for your help!

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• In terminal, merging multiple folders into one.

  - by Josh Pinter

  I have a backup directory created by WDBackup (western digital external HD backup util) that contains a directory for each day that it backed up and the incremental contents of just what was backed up. So the hierarchy looks like this: 20100101 My Documents Letter1.doc My Music Best Songs Every First Songs.mp3 My song.mp3 # modified 20100101 20100102 My Documents Important Docs Taxes.doc My Music My Song.mp3 # modified 20100102 ...etc... Only what has changed is backed up and the first backup that was ever made contains all the files selected for backup. What I'm trying to do now is incrementally copy, while keeping the folder structure, from oldest to newest, each of these dated folders into a 'merged' folder so that it overrides the older content and keeps the new stuff. As an example, if just using these two example folders, the final merged folder would look like this: Merged My Documents Important Docs Taxes.doc Letter1.doc My Music Best Songs Every First Songs.mp3 My Song.mp3 # modified 20100102 Hope that makes sense. Thanks, Josh

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• Can Airport Extremes handle NTFS external drives?

  - by Electrons_Ahoy

  I've got an Airport Extreme and an external USB Hard Drive formatted with NTFS. (And a LAN of Windows XP Machines.) The drive works perfectly when connected directly to a PC. When it's connected to the AE, however, the Airport Utility sees the drive and lists it in the Disks list, but the drive doesn't appear on the network (as near as I can tell.) Can the AE handle NTFS formatted disks? The documentation is vague on that point.

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