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• Fast way to perform addition of 2 LARGE float arrays in Android. Optional JNI or Opengl ES

  - by nathan

  I simply need to add floatArray1 to floatArray2 storing the result in floatArray2.. no third array.. all arrays are one dimensional but are very large... probibly as large as the os will let me get away with. Max i would need is two float arrays with 40,000 floats each... but i could get away with 1/10th that i suppose minimum. Would love to do this in 1/30th or 1/60th of a second but that does not seem possible? Also if the code is JNI,NDK or OpenGL ES thats fine.. does android have an assembly language or like machine code i could use somehow?

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• Interface helpers or delegating interface parent

  - by Craig Peterson

  If I have an existing IInterface descendant implemented by a third party, and I want to add helper routines, does Delphi provide any easy way to do so without redirecting every interface method manually? That is, given an interface like so: IFoo = interface procedure Foo1; procedure Foo2; ... procedure FooN; end; Is anything similar to the following supported? IFooHelper = interface helper for IFoo procedure Bar; end; or IFooBar = interface(IFoo) procedure Bar; end; TFooBar = interface(TInterfacedObject, IFoo, IFooBar) private FFoo: IFoo; public procedure Bar; property Foo: IFoo implements IFoo; end; I'm specifically wondering about ways to that allow me to always refer to IFoo, IFooBar, or TFooBar, without switching between them, and without adding all of IFoo's methods to TFooBar.

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• Codeigniter form action with slashes instead of normal GETs?

  - by Ethan

  Hey, so this is one of those questions that seems obvious, and I'm probably going to feel stupid, but here goes: I'm doing a CodeIgniter site with a search. Think of a Google type input, where you'd search for "white huskies." I have a search results page that takes a URI (MySite.com/dogs/white huskies), and takes the third part, and performs the search on that term. I'd like this to be done in the URI, and no by POST so my users can bookmark results. The problem I'm having is how to get that search button directed to Mysite.com/dogs/WHATEVER IS IN THE INPUT. How do I get the what is in the input part into the anchor href? I know I could do this with javascript, but I've heard it's bad practice to force people to have javascript for things this small. Thanks for the help!

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• Untrusted GPGPU code (OpenCL etc) - is it safe? What risks?

  - by Grzegorz Wierzowiecki

  There are many approaches when it goes about running untrusted code on typical CPU : sandboxes, fake-roots, virtualization... What about untrusted code for GPGPU (OpenCL,cuda or already compiled one) ? Assuming that memory on graphics card is cleared before running such third-party untrusted code, are there any security risks? What kind of risks? Any way to prevent them ? (Possible sandboxing on gpgpu or other technique?) P.S. I am more interested in gpu binary code level security rather than hight-level gpgpu programming language security (But those solutions are welcome as well). What I mean is that references to gpu opcodes (a.k.a machine code) are welcome.

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• Create pdf file dynamically in vb.net for .net 1.1 framework

  - by Urbycoz

  I need to create a pdf file dynamically in vb.net. It needs to contain several images and lines of text. I am using VS 2003, so whatever solution I use will need to be compatible with the .net 1.1 framework. The current method I am using is wpcubed, but this requires that all images be converted to bmp format before adding them to the pdf, which can be extremely slow when dealing with a large number of images. I am aware that there are an awful lot of other 3rd party products that claim to do this, and I have had a search through them. But without registering, downloading, installing and writing code to use each of them in turn, it is very difficult to differentiate between them. So far I have looked into evo pdf and pdfsharp but neither seem to work with .net 1.1. (Although they don't make this abundantly clear.) Has anyone else found a method that works and they would recommend (a free one-if possible)?

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• What is a flexible, hybrid python collection object?

  - by Naveen

  As a way to get used to python, I am trying to translate some of my code to python from Autohotkey_L. I am immediately running into tons of choices for collection objects. Can you help me figure out a built in type or a 3rd party contributed type that has as much as possible, the functionality of the AutoHotkey_L object type and its methods. AutoHotkey_L Objects have features of a python dict, list, and a class instance. I understand that there are tradeoffs for space and speed, but I am just interested in functionality rather than optimization issues.

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• Configuration for log4j to log ERROR level to a DB table

  - by firnnauriel

  Using the default config of a fresh Grails project, how do i change it so that ONLY error level messages will go to 'Message' table? // log4j configuration log4j = { // Example of changing the log pattern for the default console // appender: // //appenders { // console name:'stdout', layout:pattern(conversionPattern: '%c{2} %m%n') //} error 'org.codehaus.groovy.grails.web.servlet', // controllers 'org.codehaus.groovy.grails.web.pages', // GSP 'org.codehaus.groovy.grails.web.sitemesh', // layouts 'org.codehaus.groovy.grails.web.mapping.filter', // URL mapping 'org.codehaus.groovy.grails.web.mapping', // URL mapping 'org.codehaus.groovy.grails.commons', // core / classloading 'org.codehaus.groovy.grails.plugins', // plugins 'org.codehaus.groovy.grails.orm.hibernate', // hibernate integration 'org.springframework', 'org.hibernate', 'net.sf.ehcache.hibernate' warn 'org.mortbay.log' } Thanks for any leads on this.

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• XHTML editor wanted!

  - by stolsvik

  I need an editor that outputs clean HTML, and preferably strict XHTML with CSS, as I am going to display the resulting pages as help pages in a java application using xhmtlrenderer ("Flying Saucer") which apparently very much prefers XHTML with CSS 2.1. Having searched stackoverflow for HTML editor and XHTML editor, I've found several mentioned. Aptana is one, Eclipse's Web Tools is another, and KompoZer is a third. I am going to try these out. With this question, I ask whether there are other good options that would satisfy my requirements, and if there are any one of these mentioned or new ones that you'd recommend in particular, that I should focus a bit extra on?

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• Unit testing custom controls in Silverlight

  - by Hrvoje

  I have several custom controls (some kind of frames for content and layout management, like wrap panel), and would like to write unit tests for them. It's hard to find any good examples except Silverlight control toolkit, which has some helper classes to do unit tests and it's quite complicated. For MVVM classes it's easy to write tests because they don't use SL dependency system and infrastructure. Questions: how to unit test DepedenyProperty, what do I need to test how to test attached property do I test bindings with theme or UserControl, like simple textblock content binding, or command/event binding in MVVM with UserControl what else do I test in my custom controls, beside my business logic any good tutorial to achieve tests like those in control toolkit How do I start? Is SL controls toolkit only option for learning? For testing framework i'm using one from control toolkit, and for continuus integration on TFS build server I planned to use Statlight (from codeplex). Any advice on that?

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• jQuery Tablesorter - disabled headers show progress bar, sortEnd never triggered

  - by McGirl

  I'm combining Tablesorter's 'disable headers using options' function and the 'trigger sortStart / sortEnd' function and have run into an issue. The following code works fine for the most part, BUT: when you click on a disabled header, the progress-indicating #overlay div appears and never goes away. <script type="text/javascript" id="js"> $(document).ready(function() { // call the tablesorter plugin, the magic happens in the markup $("#projectTable").tablesorter({ // pass the headers argument and assing a object headers: { // assign the secound column (we start counting zero) 1: { // disable it by setting the property sorter to false sorter: false }, // assign the third column (we start counting zero) 2: { // disable it by setting the property sorter to false sorter: false } } }); //assign the sortStart event $("#projectTable").bind("sortStart",function() { $("#overlay").show(); }).bind("sortEnd",function() { $("#overlay").hide(); }); }); </script> Any ideas on how I could fix this so that nothing at all happens when the disabled headers are clicked? Thanks!

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• Creating a ListView using Category (Control Panel-Like) View

  - by Andrew Moore

  I currently have an application which uses a regular ListView with groups to show a bunch of modules. I would like to use a Category view. Category view is the new view introduced in Windows Vista for the Control Panel: Is there a third party control or a way (via API) to create a ListView which mimics the behavior of the Windows 7 Control Panel? Categories with icons and action links. Separate events for Category Click and Action Click. One or two column layout Separators between action links or lines

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• What is the maximum number of controls that a VBA form can hold?

  - by Lunatik

  I'm currently building an Excel 2003 app that requires a horribly complex form and am worried about limitations on the number of controls. It currently has 154 controls (counted using Me.Controls.Count - this should be accurate, right?) but is probably only about a third complete. The workflow really fits a single form, but I guess I can split it up if I really have to. I see evidence in a Google search that VB6 (this usually includes VBA) has a hard limit of 254 controls in a form. However, I created a dummy form with well over 1200 controls which still loaded and appeared to work just fine. I did get some 'out of memory' errors when trying to add specific combinations of controls though, say 800 buttons and 150 labels, leading me to think that any limit might be affected by the memory requirements of each type of control. Does anyone have any information that might help ensure that I or, more importantly, other users with differing environments don't run into any memory issues with such a large form?

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• xquery expression to return a link text only if it contains within it a specific string

  - by Arvind

  I want to extract some links from a XML document (links are in same format as on html pages). Now for eg a link is "http://xyz.com/start/tyu/a.html" and another is "http://ert.com/tyu/b.html" while a third link is "http://asdf.com/ghjk/c.html" From the above 3 links (which I have with me using a for clause in a FLWOR expression)...I want only the links which contain within them a string "tyu" to be selected-- I thought of using substring for this, but substring requires start and end positions to be specified- whereas in my scenario, I dont know at which position the desired string will be. How do I do substring matching in such a scenario, i.e. where exact position for occurrence of substring, is not known? I can use XQuery 1.0 for this purpose. Finally, I want to extract the link URL, as well as link text...

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• Windows command line compression/extraction tool?

  - by Will Marcouiller

  I need to write a batch file to unzip files to their current folder from a given root folder. Folder 0 |----- Folder 1 | |----- File1.zip | |----- File2.zip | |----- File3.zip | |----- Folder 2 | |----- File4.zip | |----- Folder 3 |----- File5.zip |----- FileN.zip So, I wish that my batch file is launched like so: ocd.bat /d="Folder 0" Then, make it iterate from within the batch file through all of the subfolders to unzip the files exactly where the .zip files are located. So here's my question: Does the Windows (from XP at least) have a command line for its embedded zip tool? Otherwise, shall I stick to another third-party util?

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• Eliminating matching values in a SQL result set

  - by Burgess Taylor

  I have a table with a list of transactions (invoices and credits) and I need to get a list of all the rows where the invoices and credits don't match up. eg user product value bill ThingA 200 jim ThingA -200 sue ThingB 100 liz ThingC 50 I only want to see the third and fourth rows, as the values of the others match off. I can do this if I select product, sum(value) ... group by product having sum(value) < 0 which works well, but I want to return the user name as well. As soon as I add the user to the select, I need to group by it as well, which messes it up as the amounts don't match up by user AND product. Any ideas ? I am using MS SQL 2000... Cheers

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• Flash upload problems (FileReferenceList, timeouts, #2038 )

  - by binaryLV

  Hello! I'm having problems with timeouts while trying to upload multiple files by using FileReferenceList. upload() is being called in a loop for all selected files on Event.SELECT event of FileReferenceList, but only 2 files are being uploaded simultaneously (I also see 2 opened sockets that are used for uploading by running netstat -aon | find "127.0.0.1:80"). If uploading of any file is not started in 60 seconds, I get a #2038 error. E.g., if I try to upload three large files (like 500MB each), first two uploads are started immediately, third one is not started (because limit is 2 simultaneous uploads) and it fails after 60 seconds with #2038 error (I'm fairly sure that this is because of timeout - tested it). This could be solved by calling upload() only when uploading previous file is completed, but I don't want to "hard-code" the number of possible simultaneous uploads (2 on my PC). Is there any way to get/set this number at runtime?

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• Static source code analysis with LLVM

  - by Phong

  I recently discover the LLVM (low level virtual machine) project, and from what I have heard It can be used to performed static analysis on a source code. I would like to know if it is possible to extract the different function call through function pointer (find the caller function and the callee function) in a program. I could find the kind of information in the website so it would be really helpful if you could tell me if such an library already exist in LLVM or can you point me to the good direction on how to build it myself (existing source code, reference, tutorial, example...). EDIT: With my analysis I actually want to extract caller/callee function call. In the case of a function pointer, I would like to return a set of possible callee. both caller and callee must be define in the source code (this does not include third party function in a library).

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• MySQL import in phpmyadmin (CSV) chokes on quotes

  - by Andrew Swift

  I am trying to import a .csv file into a MySQL table via phpMyAdmin. The .csv file is separated by pipes, formated like this: data|d'ata|d'a"ta|dat"a| data|"da"ta|data|da't'a| dat'a|data|da"ta"|da'ta| The data contains quotes. I have no control over the format in which I recieve the data -- it is generated by a third party. The problem comes when there is a | followed by a double quote. I always get an "invalid field count in CSV input on line N" error. I am uploading the file from the import page, using Latin1, CSV, terminated by |, separated by ". I would like to just change the "enclosed by" character, but I keep getting "Invalid parameter for CSV import: Fields enclosed by". I have tried various characters with no success. How can I tell MySQL to accept this format in phpMyAdmin? Setting up these tables is the first step in writing a program that will use uploaded gzipped .csv files to maintain the catalog of an e-commerce site.

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• Which Maven Glassfish plugin to use?

  - by Nick Klauer

  I've been trying to integrate deploying java .war's in Glassfish V3 through Maven. While I have found a few plugins, none of them look to be very active: Maven Glassfish Plugin Eskato's Wordpress Blog on Maven And I got the most information out of Eskato's Blog, it was written March 2008, so I don't know what the state of Glassfish Maven integration is, nor can I find a suitable plugin to work with. With the Maven Glassfish Plugin I have had some success, but it still doesn't work entirely well for all goals it says it supports, which makes some of the commands ineffective. Has anyone else been able to integrate Glassfish V3 and Maven successfully? If so, what resources did you use to get it done?

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• Best PHP framework for jQuery?

  - by Radagaisus

  I've read all the answers on stackoverflow for similar questions but no one really laid down an explanation: why is zend/symfony/kohana/cakePHP the best for jQuery? what is the difference? I'm writing a snazzy ultra-cool web 2.0 app with google maps and facebook connect integration plus a bunch of other APIs. Almost everything will be AJAX vis JSON. For me PHP is a burden, an unnecessary evil. I need database control, almost always via JSON. I need user authentication. This is all. Nothing fancy. And I need it to scale. Most of all I need it to work effortlessly with jQuery, I need it to be jQuery's BFF, and I need to know why it is so. Thank you very much EDIT: The candidates right now are Yii, CodeIgniter and MongoDB.

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• ASP.net repeater, scroll 3 at a time

  - by Christo Fur

  I have a list of data that I need to display in a web page 3 at a time The first needs to be displayed in a div called "left" , the second in a div called "centre" and the third in a div called "right". And I need to be able to scroll through the data with a pager. And so the next 3 results will be displayed in a similar way, and so on till the end of the data set Obviously the alternating templates in the repeater are not suitable for this. Is there a smarter way to achieve this?

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• Which set(s) of video lectures for computer science?

  - by SebKom

  As most of you know a couple of top universities (MIT, Stanford, etc) around the world are now publishing videos of their lectures online. I am advancing to the third and final year of my computer science degree this September and I was thinking about spending some time during the summer to watch a couple of lectures, in order to improve my understanding of algorithms, complexity, programming, software engineering, etc. Now I don't have infinite time to spend so I can't watch all of the lectures from all of the universities so I was wondering if you could suggest me which sets to watch from each one (something like "Algorithms from MIT", "Programming from Yale", etc).

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• Why avoid pessimistic locking in a version control system?

  - by raven

  Based on a few posts I've read concerning version control, it seems people think pessimistic locking in a version control system is a bad thing. Why? I understand that it prevents one developer from submitting a change while another has the file checked out, but so what? If your code files are so big that you constantly have more than one person working on them at the same time, I submit that you should reorganize your code. Break it up into smaller functional units. Integration of concurrent code changes is a tedious and error-prone process even with the tools a good version control system provides to make it easier. I think it should be avoided if at all possible. So, why is pessimistic locking discouraged?

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• How can I generate a list of words made up of combinations of three word lists in Perl?

  - by Chris Denman

  I have three lists of words. I would like to generate a single list of all the combinations of words from the three lists. List 1: red green blue List 2: one two List 3: apple banana The final list would like like so: red one apple red two apple red one banana red two banana ... and so on Ideally I'd like to pass in three arrays and the routine return one array. I have done a simple loop like so: foreach $word1 (@list1){ foreach $word2 (@list2){ foreach $word3 (@list3){ print "$word1 $word2 $word3\n"; } } } However, this doesn't work if there's nothing in the second or third list (I may only want to iterate between one, two or three lists at a time - in other words, if I only supply two lists it should iterate between those two lists).

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• converting an array of characters to a const gchar*

  - by Mark Roberts

  I've got an array of characters which contains a string: char buf[MAXBUFLEN]; buf[0] = 'f'; buf[1] = 'o'; buf[2] = 'o'; buf[3] = '\0'; I'm looking to pass this string as an argument to the gtk_text_buffer_insert function in order to insert it into a GtkTextBuffer. What I can't figure out is how to convert it to a const gchar *, which is what gtk_text_buffer_insert expects as its third argument. Can anybody help me out?

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