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  • Can a memory page be moved by modifying the page table?

    - by Adam
    Is it possible (on any reasonable OS, preferably Linux) to swap the contents of two memory pages by only modifying the page table and not actually moving any data? The motivation is a dense matrix transpose. If the data were blocked by page size it would be possible to transpose the data within a page (fits in cache) then swap pages to move the blocks into their final place. A large matrix would have many many pages moved, so hopefully flushing the TLB wouldn't cause trouble.

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  • How to preserve &amp; in <pre><code>

    - by Marcy Sutton
    I am having trouble preserving an ampersand in a code example on my blog, because all HTML entities start with &. Any tips? For example: <pre> <code> $pageTitle = str_replace('&', ' &amp;', $page->attributes()->title); </code> </pre> Renders as: $pageTitle = str_replace('&', '&', $page->attributes()->title);

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  • Wordpress Navigation

    - by James Pellerano
    I am working on a Wordpress Theme, I need to work on the navigation, I am having a little trouble creating it. The navigation I am looking for looks like this: www.neu.edu/humanities. I have gotten this far: if (is_front_page()) { wp_list_pages('title_li=&exclude=12&depth=1'); } else { // display the subpages of the current page while // display all of the main pages and all of the // and display the parent pages while on the subpages }

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  • How to manipulate à DataGrid in Silverlight 3

    - by Polo
    Hi I having trouble to manipulate CeLLs content in Silverlight Grids... I can get my DataGrid, the Columns but not the Cell value. How can I get the first Cell wich is an Image in a Button for every row?? I can only achieve my goal by events like the button_click but not in regulare code behind. thanks for help

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  • Grep and Awk in Windows Invalid Char in Expression Error

    - by Nathan
    I am new to grep and awk - using Windows 7 (I downloaded grep and awk for windows from GnuWin). I am have having trouble running this script: grep -Fwf dictionary.txt frequency.txt | awk '{print $2 "," $1}' I get the error: awk: '{print awk: ^ invalid char ''' in expression I believe it might have something to do with having to use double quotes in Windows, but I tried all the combinations I can think of and still it doesn't work. Can anyone help? Thanks

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  • Facebook .net return internal server error when using Multiquery

    - by Simon
    Hello I am having trouble using multiquery in facebook .net. I am trying to create 3 queries: Friends, Like and Photo using multiquery in the toolkit. It returns me with this The remote server returned an error: (500) Internal Server Error. Although, it is not happened all the time but it does occur frequently... I thought about what cause the problem but don't have a luck Please help

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  • How do I configure an extreme feedback device to notify CI build status?

    - by Gishu
    Trying to save the next guy/gal some trouble in finding out what is needed to setup lava lamps or traffic lights or what have you (the term I believe is eXtreme Feedback Devices) as a BIG VISIBLE INDICATOR of your continuous integration build status. Ensure your post includes... (and please don't mess this question up with imaginative responses.. although it may be insanely funny at the point of conception) the XFD what 'helper' hardware is needed software that you managed to hook it up with detailed instructions on how to set it up

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  • jquery performing calculation on dynamically generated elements

    - by user306472
    I have a table made up of a row of 3 input elements: Price, Quanity, and Total. Under that, I have two links I can click to dynamically generate another row in the table. All that is working well, but actually calculating a value for the total element is giving me trouble. I know how to calculate the value of the first total element but I'm having trouble extending this functionality when I add a new row to the table. Here's the html: <table id="table" border="0"> <thead> <th>Price</th><th>Quantity</th><th>Total</th> </thead> <tbody> <tr> <td><input id ="price" type = "text"></input></td> <td><input id ="quantity" type = "text"></input></td> <td><input id ="total" type = "text"></input></td> </tr> </tbody> </table> <a href="#" id="add">Add New</a> <a href="#" id="remove">Remove</a> Here's the jquery I'm using: $(function(){ $('a#add').click(function(){ $('#table > tbody').append('<tr><td><input id ="price" type = "text"></input></td><td><input id ="quantity" type = "text"></input></td><td><input id ="total" type = "text"></input></td></tr>'); }); $('a#remove').click(function(){ $('#table > tbody > tr:last').remove(); }); }); $(function(){ $('a#calc').click(function(){ var q = $('input#quantity').val(); var p = $('input#price').val(); var tot = (q*p); $('input#total').val(tot); }); }); I'm new to jquery so there's probably a simple method I don't know about that selects the relevant fields I want to calculate. Any guidance would be greatly appreciated.

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  • Microsoft SQL Count problem

    - by Matt
    Hey smarties. I'm having trouble with the following SQL statement. I know that I can't do a GROUP BY on the OnlineStatus column, and it makes sense because it's a function call, not an actual column in my table. How would I modify this so that I can get a count of how many users are online? SELECT CASE dbo.fnGetWebUserOnlineStatus(W.Id) WHEN 1 THEN 'Online' WHEN 2 THEN 'Ingame' ELSE 'Offline' END AS OnlineStatus FROM dbo.WebUsers W WHERE W.[Status]=1 GROUP BY OnlineStatus

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  • Heroku and i18n Problems

    - by nvano
    i´m having trouble getting i18n to work on heroku. i set: I18n.default_locale = :de in my environment.rb and the translation is in config/locales/de.yml works perfect on my local machines but not so on heroku. on heroku everything is in english. i don´t think i need a special gem like i18n gem, cause i don´t have it on my local machine either. maybe anyone has a solution to this?

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  • Does iPhone libffi require jailbreak?

    - by Jared P
    Hi, I'd like to write an app-store-approvable app for the iPhone OS which uses libffi. Is this allowed? I am capable of rewriting all of the parts that use it with things like NSInvocation without too much trouble, but would prefer libffi. So my question is: would apps that use libffi be accepted to the app store?

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  • Flash AS 3.0 building a message console approach

    - by vasion
    I am having trouble figuring out how to build a console for my application so i can send msgs to it from any class in the package. i tried to send a generic Event, but I cannot find a way send a msg together with the event, or at least a reference to the object which is dispatching the event. what approach would you suggest?

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  • Escaping escape Characters

    - by Alix Axel
    I'm trying to mimic the json_encode bitmask flags implemented in PHP 5.3.0, here is the string I have: $s = addslashes('O\'Rei"lly'); // O\'Rei\"lly Doing json_encode($str, JSON_HEX_APOS | JSON_HEX_QUOT) outputs the following: "O\\\u0027Rei\\\u0022lly" And I'm currently doing this in PHP versions older than 5.3.0: str_replace(array('\\"', "\\'"), array('\\u0022', '\\\u0027'), json_encode($s)) or str_replace(array('\\"', '\\\''), array('\\u0022', '\\\u0027'), json_encode($s)) Which correctly outputs the same result: "O\\\u0027Rei\\\u0022lly" I'm having trouble understanding why do I need to replace single quotes ('\\\'' or even "\\'" [surrounding quotes excluded]) with '\\\u0027' and not just '\\u0027'.

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  • iPhone Address Book - Actual Addresses

    - by Programasaurus
    I'm trying to retrieve all the addresses from the address book and display them in a tableview, but I am having trouble understanding the structure of the dictionary for which street addresses are returned. Does anyone know of a tutorial or relevant code snippet for extracting the street address(es) of contacts in the AddressBook?

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  • groovyx.net.ws.WSClient is having problems with ''soapenc:Array' Any workaround?

    - by ?????
    I'm trying to call a webservice (implemented with a .NET/ASP system) from groovy/grails using WSClient. I have no trouble accessing this service using the SOAPClient debugger (Todd Ditchendorf's program for OSX), but when i try it via groovy/grails, I get the error undefined simple or complex type 'soapenc:Array' Is there any solution? Looking at it with wireshark: It seems to have thrown this error even before it gets a chance to perform the transaction. The error is thrown right after WSClient has downloaded the second of two schemas referenced in he WSDL.

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  • Getting my head around the practical applications of strong and weak pointers in Objective-C

    - by Chris Wilson
    I've just read the accepted excellent answer to this question that clarifies the conceptual differences between strong and weak pointers in Objective-C, and I'm still trying to understand the practical differences. I come from a C++ background where these concepts don't exist, and I'm having trouble figuring out where I would use one vs the other. Could someone please provide a practical example, using Objective-C code, that illustrates the different uses of strong and weak pointers?

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  • Facebook php client

    - by AlfaTeK
    I'm trying to use facebook connect in my site so users can register/login with it and I'm having a little bit of trouble understanding all the tutorials around the web. My question is simple, does the facebook php client lib work in my use case or only to develop facebook applications that run inside fb ?

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  • Custom keys with NERDComment plugin and remapped Leader?

    - by Paul Wicks
    I'm trying to set up the NERDComment plugin in vim, but I'm having some trouble with the keys. I'd like to set the basic toggle functionality (comment a line if it's uncommented, uncomment if it's commented) to be c. The problem is that I've remapped the Leader to be ,, which is the same key that NERD wants for all of it's hotkeys. Anyone have any idea as to how to set this up?

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  • LaTeX Double Spacing

    - by reprogrammer
    I am using the acm LaTeX template and I have trouble making my paper double spaced. My LaTeX document looks like the following: \documentclass{acm_proc_article-sp} \usepackage{setspace} \doublespacing \begin{document} ... \end{document} When I compile the above document using pdflatex, I get the following error message on the line that I use the command \doublespacing: Missing number, treated as zero \doublespacing

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  • Pitch detection and change java

    - by omegas27
    Hello, I'm french so I'm sorry if you have trouble to understand some of my sentences. Aniways, I saw in some topics that the pitch could be fetected thanks to the Fourier transform but I didn't really understand how to implement it. Moreover, I didn't find how to change the pitch of a wav file and if possibl ,a mp3 file I am listening to music using javaSound for the wav and JLayer for the mp3. Thanks

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  • Managing multiple apps with one Google Analytics account?

    - by Charles S.
    I've just setup a Google Analytics for Mobile Apps account and I've implemented the SDK in my iPhone app with no trouble at all. However, I haven't figured out how to manage multiple apps with one account. It seems fairly easy to setup multiple subdomains when dealing with websites and I've noticed the javascript code has a setSubdomain function that doesn't seem to be present in the iPhone SDK. Is there any way I can have google analytics differentiate my different apps for the same account?

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