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  • Kohana 3 - Constructor

    - by pigfox
    I attempted to use public function __construct(){} but got the error ErrorException [ Strict ]: Creating default object from empty value. The reason behind this is that I use a controller that is protected for logged in users only, I don't want to have to call $this-protect(); from every action in the controller. Hence my attempt to use a constructor that calls $this-protect();

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  • Matlab N-Queen Problem

    - by Kay
    main.m counter = 1; n = 8; board = zeros(1,n); back(0, board); disp(counter); sol.m function value = sol(board) for ( i = 1:(length(board))) for ( j = (i+1): (length(board)-1)) if (board(i) == board(j)) value = 0; return; end if ((board(i) - board(j)) == (i-j)) value = 0; return; end if ((board(i) - board(j)) == (j-i)) value = 0; return; end end end value = 1; return; back.m function back(depth, board) disp(board); if ( (depth == length(board)) && (sol2(board) == 1)) counter = counter + 1; end if ( depth < length(board)) for ( i = 0:length(board)) board(1,depth+1) = i; depth = depth + 1; solv2(depth, board); end end I'm attempting to find the maximum number of ways n-queen can be placed on an n-by-n board such that those queens aren't attacking eachother. I cannot figure out the problem with the above matlab code, i doubt it's a problem with my logic since i've tested out this logic in java and it seems to work perfectly well there. The code compiles but the issue is that the results it produces are erroneous. Java Code which works: public static int counter=0; public static boolean isSolution(final int[] board){ for (int i = 0; i < board.length; i++) { for (int j = i + 1; j < board.length; j++) { if (board[i] == board[j]) return false; if (board[i]-board[j] == i-j) return false; if (board[i]-board[j] == j-i) return false; } } return true; } public static void solve(int depth, int[] board){ if (depth == board.length && isSolution(board)) { counter++; } if (depth < board.length) { // try all positions of the next row for (int i = 0; i < board.length; i++) { board[depth] = i; solve(depth + 1, board); } } } public static void main(String[] args){ int n = 8; solve(0, new int[n]); System.out.println(counter); }

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  • object array mobile development

    - by mixm
    Im currently creating a tile-based game for android. Using java via dalvik JVM. im fretting over a decision to represent objects in a particular map. should i use an id based map (2 dimensional integer array) and place game logic in a separate function in the game engine, or create an object array (2 dimensional array of game objects) and store game logic within the class methods. i am thinking about the cost of object creation and garbage collection vs extensibility.

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  • does android 1.5 saves fpu regs on context switch

    - by fazo
    i'm asking 1.5 and up or is it dependant on what's in ".config" when compiled for my phone? (and yes, i know that android has to support processors with soft-float, but several libm on different phones do have hard-float libm) (please provide -if possible- any link to/file name of context switching function for msm 7200A/7201A)

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  • Streaming webcam video in Flash using MP4 encoding

    - by Herms
    One of the features of the Flash app I'm working on is to be able to stream a webcam to others. We're just using the built-in webcam support in Flash and sending it through FMS. We've had some people ask for higher quality video, but we're already using the highest quality setting we can in Flash (setting quality to 100%). My understanding is that in the newer flash players they added support for MPEG-4 encoding for the videos. I created a simple test Flex app to try and compare the video quality of the MP4 vs FLV encodings. However, I can't seem to get MP4 to work at all. According to the Flex documentation the only thing I need to do to use MP4 instead of FLV is prepend "mp4:" to the name of the stream when calling publish: Specify the stream name as a string with the prefix mp4: with or without the filename extension. The prefix indicates to the server that the file contains H.264-encoded video and AAC-encoded audio within the MPEG-4 Part 14 container format. When I try this nothing happens. I don't get any events raised on the client side, no exceptions thrown, and my logging on the server side doesn't show any streams starting. Here's the relevant code: // These are all defined and created within the class. private var nc:NetConnection; private var sharing:Boolean; private var pubStream:NetStream; private var format:String; private var streamName:String; private var camera:Camera; // called when the user clicks the start button private function startSharing():void { if (!nc.connected) { return; } if (sharing) { return; } if(pubStream == null) { pubStream = new NetStream(nc); pubStream.attachCamera(camera); } startPublish(); sharing = true; } private function startPublish():void { var name:String; if (this.format == "mp4") { name = "mp4:" + streamName; } else { name = streamName; } //pubStream.publish(name, "live"); pubStream.publish(name, "record"); }

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  • What does this code mean?

    - by joseph
    Hello, I do not know, what is function of code lookups.singleton in code below public class ProjectNode extends AbstractNode { public ProjectNode(MainProject obj, ProjectsChildren children) { super (children, Lookups.singleton(obj)); setDisplayName ( obj.getName()); } }

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  • Is there any limit to recursion in lisp?

    - by Isaiah
    I enjoy using recursion whenever I can, it seems like a much more natural way to loop over something then actual loops. I was wondering if there is any limit to recursion in lisp? Like there is in python where it freaks out after like 1000 loops? Could you use it for say, a game loop? Testing it out now, simple counting recursive function. Now at 7000000! Thanks alot

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  • R: Removing object from parent environment using rm()

    - by user151410
    Hi, I am trying to remove an object from the parent environment. rm_obj <- function(obj){ a <-deparse(substitute(obj)) print (a) print(ls(envir=sys.frame(-1))) rm(a,envir=sys.frame(-1)) } > x<-c(1,2,3) > rm_obj(x) [1] "x" [1] "rm_obj" "x" Warning message: In rm(a, envir = sys.frame(-1)) : object 'a' not found This will help clarify my misunderstanding regarding frames. Thanks in advance, Russ

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  • Count number of arguments to Excel formula in VBA

    - by Abiel
    I need to use VBA to determine the number of arguments passed to an Excel formula. For instance, suppose a cell contains the formula =MyFunc($A$1, "xyz", SUM(1,2,COUNT(C1:C12)), IF(B12,1,0)). Then the counter function should return 4. Does VBA contain any built-in functions for this, or does someone have an example of a regular expression that could calculate this?

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  • Need help with Xpath methods in javascript (selectSingleNode, selectNodes)

    - by Andrija
    I want to optimize my javascript but I ran into a bit of trouble. I'm using XSLT transformation and the basic idea is to get a part of the XML and subquery it so the calls are faster and less expensive. This is a part of the XML: <suite> <table id="spis" runat="client"> <rows> <row id="spis_1"> <dispatch>'2008', '288627'</dispatch> <data col="urGod"> <title>2008</title> <description>Ur. god.</description> </data> <data col="rbr"> <title>288627</title> <description>Rbr.</description> </data> ... </rows> </table> </suite> In the page, this is the javascript that works with this: // this is my global variable for getting the elements so I just get the most // I can in one call elemCollection = iDom3.Table.all["spis"].XML.DOM.selectNodes("/suite/table/rows/row").context; //then I have the method that uses this by getting the subresults from elemCollection //rest of the method isn't interesting, only the selectNodes call _buildResults = function (){ var _RowList = elemCollection.selectNodes("/data[@col = 'urGod']/title"); var tmpResult = ['']; var substringResult=""; for (i=0; i<_RowList.length; i++) { tmpResult.push(_RowList[i].text,iDom3.Global.Delimiter); } ... //this variant works elemCollection = iDom3.Table.all["spis"].XML.DOM _buildResults = function (){ var _RowList = elemCollection.selectNodes("/suite/table/rows/row/data[@col = 'urGod']/title"); var tmpResult = ['']; var substringResult=""; for (i=0; i<_RowList.length; i++) { tmpResult.push(_RowList[i].text,iDom3.Global.Delimiter); } ... The problem is, I can't find a way to use the subresults to get what I need.

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  • Jquery Cycle issue or css issue in Chrome/Safari for Mac

    - by Mark
    Hi i have used the jquery cycle plugin to create multiple simple sliding galleries. In Chrome/Safair on Mac the browser is not loading the images. Here is the link the js i am using is here, although it could be a css issue..? I am struggling to find the real problem. $(document).ready(function() { $('.slides').each(function() { var $this = $(this), $ss = $this.closest('.slideshow'); var prev = $ss.find('a.prev'), next = $ss.find('a.next'); $this.cycle({ prev: prev, next: next, fx: 'scrollLeft', speed: 'fast', timeout: 0 }); }); }); CSS .slideshow { width:476px; height:287px; float:left; margin-right:30px; position:relative; z-index:0; margin-bottom:20px; } .slides { position:absolute; top:0; left:0; z-index:1; } a.prev { display:block; width:23px; height:22px; background:red; position:absolute; z-index:1000; background: url(../images/next_prev.png) no-repeat 0 0; top:133px; left:-11px; } a.next { display:block; width:23px; height:22px; background:red; position:absolute; z-index:1000; background: url(../images/next_prev.png) no-repeat -23px 0; top:133px; right:-11px; } Markup: <div class="slideshow"> <div class="slides"> <img src="images/chief_st_1.jpg" alt="CHIEF stationery + literature" /> <img src="images/chief_st_3.jpg" alt="CHIEF stationery + literature" /> <img src="images/chief_st_2.jpg" alt="CHIEF stationery + literature" /> </div> <a class="prev" href="#"></a> <a class="next" href="#"></a> </div> Any help would be appreciated. thanks

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  • $.ajax post to PHP mail() using jQuery doesn't work

    - by Vian Esterhuizen
    Hey, I looked around on SO and Google, but couldn't really find a solution. Could someone please explain to me why this doesn't work? This is my first time using AJAX to submit a form. $.ajax({ type: "POST", url: "<?php bloginfo('template_url'); ?>/email.php", data: dataString, success: function() { $('#contact_form').html("<div id='message'></div>"); $('#message').html("<h2>Contact Form Submitted!</h2>") .append("<p>We will be in touch soon.</p>") .hide() .fadeIn(1500, function() { $('#message').append("<img id='checkmark' src='images/check.png' />"); }); } }); and <?php $name=$_POST['name']; $email=$_POST['email']; $phone=$_POST['phone']; $subject=$_POST['subject']; $message=$_POST['message']; $quote=$_POST['quote']; $to="[email protected]"; $body="<p>From: ".$name." <".$email."><br />"; $body.="Phone: ".$phone."<br />"; $body.="Project: ".$subject."<br />"; $body.="Quote: ".$quote."</p>"; $body.="<p>Message:<br /> ".$message."</p>"; $headers = "MIME-Version: 1.0" . "\r\n"; $headers .= "Content-type: text/html; charset=iso-8859-1" . "\r\n"; $headers .= "From: ".$name."<".$email.">\r\n"; $headers .= "Reply-To: ".$name."<".$email.">\r\n"; $subject="New message from FloorShop.ca about \"".$subject."\""; @mail($to,$subject,$body,$headers); echo $name,$email,$phone,$subject,$message,$quote; ?

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  • DateTime.Now.Millisecond always return 0 on compact framework

    - by Sachin
    I need some way to find the elapsed time or time taken in milliseconds for a function to execute in compact framework. For the same I tried DateTime.Now.Millisecond. But DateTime.Now.Millisecond always return 0. Also I tried with Now.Tick. But it also returns the value in multiplication of 1,00,00,000 which means it always returns seconds part ignoring the milliseconds. My question is how to determine the time elapsed in millisecond on compact framework.

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  • Release Process Improvements

    - by wallismark
    The process of creating a new build and releasing it to production is a critical step in the SDLC but it is often left as an afterthought and varies greatly from one company to the next. I'm hoping people will share improvements they have made to this process in their organisation so we can all takes steps to 'reduce the pain'. So the question is, specify one painful/time consuming part of your release process and what did you do to improve it? My example: at a previous employer all developers made database changes on one common development database. Then when it came to release time, we used Redgate's SQL Compare to generate a huge script from the differences between the Dev and QA databases. This works reasonably well but the problems with this approach are:- ALL changes in the Dev database are included, some of which may still be 'works in progress'. Sometimes developers made conflicting changes (that were not noticed until the release was in production) It was a time consuming and manual process to create and validate the script (by validate I mean, try to weed out issues like problem 1 and 2). When there were problems with the script (eg the order in which things were run such as creating a record which relies on a foreign key record which is in the script but not yet run) it took time to 'tweak' it so it ran smoothly. It's not an ideal scenario for Continuous Integration. So the solution was:- Enforce a policy of all changes to the database must be scripted. A naming convention was important for ensuring the correct running order of the scripts. Create/Use a tool to run the scripts at release time. Developers had their own copy of the database do develop against (so there was no more 'stepping on each others toes') The next release after we started this process was much faster with fewer problems, indeed the only problems found were due to people 'breaking the rules', eg not creating a script. Once the issues with releasing to QA were fixed, when it came time to release to production it was very smooth. We applied a few other changes (like introducing CI) but this was the most significant, overall we reduced release time from around 3 hours down to a max of 10-15 minutes.

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  • JavaScript: Doing some stuff right before the user exits the page

    - by Mike
    I have seen some questions here regarding what I want to achieve and have based what I have so far on those answer. But there is a slight misbehavior that is still irritating me. What I have is sort of a recovery feature. Whenever you are typing text, the client sends a sync request to the server every 45 seconds. It does 2 things. First, it extends the lease the client has on the record (only one person may edit at one time) for another 60 seconds. Second, it sends the text typed so far to the server in case the server crashes, internet connection fails, etc. In that case, the next time the user enters our application, the user is notified that something has gone wrong and that some text was recovered. Think of Microsoft or OpenOffice recovery whenever they crash! Of course, if the user leaves the page willingly, the user does not need to be notified and as a result, the recovery is deleted. I do that final request via a beforeunload event. Everything went fine until I was asked to make a final adjustment... The same behavior you have here at stack overflow when you exit the editor... a confirm dialogue. This works so far, BUT, the confirm dialogue is shown twice. Here is the code. The event if (local.sync.autosave_textelement) { window.onbeforeunload = exitConfirm; } The function function exitConfirm() { var local = Core; if (confirm('blub?')) { local.sync.autosave_destroy = true; sync(false); return true; } else { return false; } }; Some problem irrelevant clarifications: Core is a global Object that contains a lot of variables that are used everywhere. sync makes an ajax request. The values are based on the values that the Core.sync object contains. The parameter determines if the call should be async (default) or sync.

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  • Get cookie expiration

    - by Ashish Rajan
    Is it possible to read cookie expiration time with php ? When I print_r($_COOKIE) it outputs: Array ( [PHPSESSID] => 0afef6bac83a7db8abd9f87b76838d7f [userId] => 1232 [userEmail] => [email protected] [firstName] => user [lastName] => user ) So I think $_COOKIE don't have the expiration time, is it possible with some other function?

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  • jQuery: How to grab RadioButton selection?

    - by Matt
    I need to grab the value of the radiobutton option selected with jQuery. I am using the following code but "str" is undefined in Firebug: //handling Feed vs. Ingredient RadioButton $('[id$=rdoCheck]').change(function() { str = $("input[name='rdoCheck']:checked").val(); //ingredients if (str == "ing") { $('[id$="lblDescription"]').text("Ingredient") } //finished feed else if (str == "ffc") { $('[id$="lblDescription"]').text("Finished") } });

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  • How to throw an HTTP error with mod_python

    - by Zxaos
    I have a setup where I'm serving simple python pages using the mod_python publisher. At some points I'd like to have the python function raise a standard apache error - for example throwing a 500 error if a required file is missing. How can I throw an apache error from within a mod_python script?

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