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  • effective retrieve for a voting system in PHP and MySQL

    - by Adnan
    Hello, I have a system where registered users can vote up/vote down comment for a picture. Something very similar to SO's voting system. I store the votes in a table with values as such; vote_id | vote_comment_id | vote_user_id | vote_date | vote_type Now I have few a question concerned the speed and efficiency for the following; PROB: Once a user opens the picture page with comments I need, if that user has already voted UP/DOWN a comment to show it like; "you voted up" or "you voted down" next to the comment (in SO it the vote image is highlighted) MY POSSIBLE SOL: Right now when I open a picture page for each comment I loop thru, I loop thru my table of votes as well and check if a user has voted and show the status (I compare the vote_user_id with the user's session). How efficient is this? Anyone have a better approach to tackle this kind of problem?

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  • effective retrieve for a voting system in PHP

    - by Adnan
    Hello, I have a system where registered users can vote up/vote down comment for a picture. Something very similar to SO's voting system. I store the votes in a table with values as such; vote_id | vote_comment_id | vote_user_id | vote_date Now I have few a question concerned the speed and efficiency for the following; PROB: Once a user opens the picture page with comments I need, if that user has already voted UP/DOWN a comment to show it like; "you voted up" or "you voted down" next to the comment (in SO it the vote image is highlighted) MY POSSIBLE SOL: Right now when I open a picture page for each comment I loop thru, I loop thru my table of votes as well and check if a user has voted and show the status (I compare the vote_user_id with the user's session). How efficient is this? Anyone have a better approach to tackle this kind of problem?

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  • How to calculate a RTOS task's time

    - by Adnan
    Hello all, I have written a code in c for Arm7 using RTOS. There are multiple tasks who's priority is set to same level. So the tasks executes on round-robin base. There is an exception that one task (Default) has set to lower priority then the other task in rtos. So that if no task is running, the default or lower priority task runs. Now i want to calculate the exact total timing (time duration) for that default task runs. Can any one give some idea what to do .... and how to do in code.. Regards Dani

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  • iphone sdk 3.0 requirements...

    - by Muhammad Adnan
    I have Mac OS X 10.5.8 and wanted to get its compatible iphone sdk version. i got iphone sdk 3.2 but lllater find out it requires 10.6.2 which i can't get for some reason. i just wanted to know where can i get (exact link if pssible) compatible version of iphone sdk for mac 10.5.8 ... no matter its iphone sdk 3.0 or 3.1 3.2... pls guide.. t hanks

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  • Image Masking Problem

    - by Adnan Sohail
    Hi I am doing image masking. First I was using C*GImageMaskCreate()* function for masking but now I am using your solution which you had posted for masking. My problem is it works fine on simulator but on device it is not transparent and it gives rectangle of mask image at background. The following is my code. Now tell me what I have to do? Thanks. CGContextRef mainViewContentContext; CGColorSpaceRef colorSpace; UIImage *orgImage=[UIImage imageNamed:@"orgimage.png"]; CGImageRef img = [orgImage CGImage]; colorSpace = CGColorSpaceCreateDeviceRGB(); mainViewContentContext = CGBitmapContextCreate (NULL, width, height, 8, 0, colorSpace, kCGImageAlphaPremultipliedLast); CGColorSpaceRelease(colorSpace); if (mainViewContentContext==NULL) return NULL; CGRect subImageRect; CGImageRef tileImage; subImageRect = CGRectMake(xCord,yCord,width,height); tileImage = CGImageCreateWithImageInRect(img,subImageRect); CGImageRef maskImage = mask_image.CGImage; CGContextClipToMask(mainViewContentContext, CGRectMake(0, 0, width, height), maskImage); CGContextDrawImage(mainViewContentContext, CGRectMake(0, 0, width, height), tileImage); CGImageRef mainViewContentBitmapContext = CGBitmapContextCreateImage(mainViewContentContext); CGContextRelease(mainViewContentContext); UIImage *theImage = [UIImage imageWithCGImage:mainViewContentBitmapContext]; CGImageRelease(mainViewContentBitmapContext);

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  • _Painless_ integration of Eclipse with Vim?

    - by Adnan
    Hi, Has anyone managed to get Vim integrated into Eclipse painlessly? I just want to use Vim for the editor while retaining the general Eclipse interface. I have tried using Eclim plugin but the editor seemed to crash more often than work (the site said that the editor replacement functionality is still beta). On the flip side, is there any IDE which matches Eclipse's functionality -- mainly the integration with SVN, ant, etc. -- and is also able to use Vim? I mostly use eclipse for SAS SCL, Java and Javascript programming and find the eclipse editor too "mouse-y". I'd also like, in a perfect world, to use vimdiff as a diff viewer for SVN (we use TortoiseSVN) while checking for diffs or conflicts during merge etc. I admit I havent spent a lot of time trying to get these things to work. I feel guilty about spending too much time on potential wild-goose-chases while my other team members are working away at their code, perfectly content with all that eclipse has to offer. Edit: Just found this while desperately browsing around: Vim plugin.. Any experience using this? Its saturday afternoon in Kiwi land, so I'll try it later and update if no one has an opinion. From the claims on the site, it sounds perfect.

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  • Creating a column of RadioButtons in Adobe Flex

    - by adnan
    I am having an un-predictable behavior of creating radio buttons in advancedDataGrid column using itemRenderer. Similar kind of problem has been reported at http://stackoverflow.com/questions/112036/creating-a-column-of-radiobuttons-in-adobe-flex. I tried to use the same procedure i.e. bind every radio button selectedValue and value attributes with the property specified in the property of the associated bean but still facing the problem. The button change values! The selected button becomes deselected, and unselected ones become selected. Here is the code of my advancedDataGrid: <mx:AdvancedDataGrid id="adDataGrid_rptdata" width="100%" height="100%" dragEnabled="false" sortableColumns="false" treeColumn="{action}" liveScrolling="false" displayItemsExpanded="true" > <mx:dataProvider> <mx:HierarchicalData source="{this.competenceCollection}" childrenField="competenceCriteria"/> </mx:dataProvider> <mx:columns> <mx:AdvancedDataGridColumn headerText="" id="action" dataField="criteriaName" /> <mx:AdvancedDataGridColumn headerText="Periode 1" dataField="" width="200"> <mx:itemRenderer> <mx:Component> <mx:HBox horizontalAlign="center" width="100%" verticalAlign="middle"> <mx:RadioButton name="period1" value="{data}" selected="{data.period1}" group="{data.radioBtnGrpArray[0]}" visible="{data.showRadioButton}" /> </mx:HBox> </mx:Component> </mx:itemRenderer> </mx:AdvancedDataGridColumn> <mx:AdvancedDataGridColumn headerText="Periode 2" dataField="" width="200"> <mx:itemRenderer> <mx:Component> <mx:HBox horizontalAlign="center" width="100%" verticalAlign="middle"> <mx:RadioButton name="period2" value="{data}" selected="{data.period2}" group="{data.radioBtnGrpArray[1]}" visible="{data.showRadioButton}" /> </mx:HBox> </mx:Component> </mx:itemRenderer> </mx:AdvancedDataGridColumn> <mx:AdvancedDataGridColumn headerText="Periode 3" dataField="" width="200"> <mx:itemRenderer> <mx:Component> <mx:HBox horizontalAlign="center" width="100%" verticalAlign="middle"> <mx:RadioButton name="period3" value="{data}" selected="{data.period3}" group="{data.radioBtnGrpArray[2]}" visible="{data.showRadioButton}" /> </mx:HBox> </mx:Component> </mx:itemRenderer> </mx:AdvancedDataGridColumn> </mx:columns> </mx:AdvancedDataGrid> Any work around is highly appreciated in this regard!

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  • Sort by values from hash table - Ruby

    - by Adnan
    Hello, I have the following hash of countries; COUNTRIES = { 'Albania' => 'AL', 'Austria' => 'AT', 'Belgium' => 'BE', 'Bulgaria' => 'BG', ..... } Now when I output the hash the values are not ordered alphabetically AL, AT, BE, BG ....but rather in a nonsense order (at least for me) How can I output the hash having the values ordered alphabetically?

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  • where to start linux kernel programming?

    - by Adnan
    I have been programming in C for a couple of years in Linux. Now I want to work on linux kernel and contribute to kernel, if possible. I have been looking on the internet for the information about a starting point but I couldn't find one. So can any one please tell me where to begin?

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  • Select Table Rows by Grouping them Adjacent to each Other using XPath

    - by Adnan Yaseen
    I am not clear how to express my problem correctly in the question so forgive me if I am not able to properly convey my problem. I have following data. <tr class="header">Random Value 1</tr> <tr class="item">1</tr> <tr class="item">2</tr> <tr class="item">3</tr> <tr class="header">Random Value 2</tr> <tr class="item">4</tr> <tr class="item">5</tr> <tr class="item">6</tr> <tr class="header">Random Value 3</tr> <tr class="item">7</tr> <tr class="item">8</tr> <tr class="item">9</tr> What I want to acheive is that I want to select the with class header. I have achieved this by using the following line of code, HtmlNodeCollection headerNodes = doc.DocumentNode.SelectNodes("//tr[@class='header']"); Now I have all the header rows in the collection. Now I loop through all the header nodes and I want to get the table rows which are adjacent to the respective header rows. foreach (HtmlNode node in headerNodes) { HtmlNodeCollection itemNodes = ??? } My question is that what I should write here so that for header row with text "Random Value 1" I get the item rows 1,2 and 3. Similarly for header row with text "Random Value 2" I get the item row 4,5 and 6 and so on.

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  • Actionscript 3: How to remove all black pixels from BitmapData ?

    - by Adnan Doric
    Hello, Let say I have a BitmapData with different pixels representing an object, and some black pixels around it that I want to remove. I would like to obtain a new BitmapData, with width and height of the object represented by non-black pixels. For example, let say I have a BitmapData 400x400px, but the object represented by non-black pixels occupies the rect: x=100, y=100, width=200, height=200. I want to get new BitmapData representing that rect, all black pixels should be removed. Any idea on how to do this please ?

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  • What is a manhattan database?

    - by Adnan Anwar
    A friend of mine was interviewing for a data warehouse and Business Object role But he was asked about the Manhattan database? I have Googled "Manhattan database" and even searched for it on Bing and Yahoo but have found no relevant information. Any help would be greatly appreciated!

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  • operation specified in binding is not defined for 'Porttype', but it is there, wsdl.. help..

    - by adnan
    Hi guys... this thing is driving me crazy... Whenever I try to validate it.. it gives me error at <wsdl:operation name="ComposedClassOpt"> complete definition is below... that "The operation specified for the 'Binding' binding is not defined for port type 'ComposedClassPortType'. All operations specified in this binding must be defined in port type 'ComposedClassPortType'." But the operation is in the PortType plz thank you. <?xml version="1.0" encoding="UTF-8"?>

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  • wpf datagrid textbox + combobox

    - by Muhammad Adnan
    I have wpf datagrid with number of template columns. some of them have textbox in them in edit mode and some combobox. i need to give cut/copy/paste facility to user from main menu (ribbon) buttons of my application. when i select some text from textbox and press copy button from main menu. copy button becomes active control so i loose textbox as active control by which i could get selected text. (any solution for this) and second thing i wanted to ask... is there any event get fired when we select textbox's contents? or solution would be appreciated. Thanks in advance...

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  • work with rescue in Rails

    - by Adnan
    Hi, I am working with the following piece; def index @user = User.find(params[:id]) rescue flash[:notice] = "ERROR" redirect_to(:action => 'index') else flash[:notice] = "OK" redirect_to(:action => 'index') end Now I either case whether I have a correct ID or not, I am always getting "OK" in my view, what am I doing wrong? I need that when I have no ID in the DB to show "ERROR". I have also tried to use rescue ActiveRecord::RecordNotFound but same happens. All help is appreciated.

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  • combobox in Flex

    - by Adnan
    I have combo-box; <mx:VBox xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" > <fx:Script> <![CDATA[ public var cbSelected:String; ]]> </fx:Script> <mx:ComboBox id="CustomBox" updateComplete="cbSelected=CustomBox.selectedLabel;" dataProvider="{parentDocument.getAllResult4.lastResult}" labelField="name"/> </mx:VBox> And I display the combo-box in a data-grid. My problem is that I need a key to be send back. My table is as below: KEY | NAME ON | ONE TW | TWO So I display the name in combobox by using labelField="name" But how to have the return value of key? so ONE is displayed in the combo-box and ON is returned back.

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  • How to add datasource to a report in VS2010?

    - by Adnan Badar
    In VS2008 we have menu Report-Data Sources... which opens "Report Data Sources" from here we can see Project data sources & we can add them into our report by pressing "Add to Report". but in VS2010 RC there is no such thing like this (no Data Sources... option inside Report menu) any help?

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  • namespace extension.. galaxy file system toolkit...gmail shell drive like utility...

    - by Muhammad Adnan
    i was looking for some namespace extention to extend using c# (.net) but didn't find much help online except Galaxy Filesystem tooklkit. which are vc++ based but comes with c# and java wrapper classes... which helps me alot to start and i did. i have extended that enough now and made installer to install. it get installed successfully but don't know why, when i open it, system get stuck... :( i thought my modified version might have some problem so i tried to run Galaxy filesystem toolkit's author original version and it responded in same way as mine do :D :( now feeling bit helpless as even author is not responding my queries regarding my queries for some reason... any help would be really appreciated.... FYI: i need to have Gmail drive like stuff...

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  • Conversion from string to type 'Double' is not valid.

    - by Adnan Badar
    Hi, I am getting the following error while running a select statement (using OleDbCommand). My query is SELECT CME FROM Personnel WHERE CME = '11349D' If objOleDbCom.ExecuteScalar() 0 Then When i execute the above statement i got this error Conversion from string "11349D" to type 'Double' is not valid. My field CME data type is Text My database is Access 2007 I tried by running my query directly inside database and it is running fine. Please suggest. Thanks.

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  • is this a secure approach in ActiveRecords in Rails?

    - by Adnan
    Hello, I am using the following for my customers to unsubscribe from my mailing list; def index @user = User.find_by_salt(params[:subscribe_code]) if @user.nil? flash[:notice] = "the link is not valid...." render :action => 'index' else Notification.delete_all(:user_id => @user.id) flash[:notice] = "you have been unsubscribed....." redirect_to :controller => 'home' end end my link looks like; http://site.com/unsubscribe/32hj5h2j33j3h333 so the above compares the random string to a field in my user table and accordingly deletes data from the notification table. My question; is this approach secure? is there a better/more efficient way for doing this? All suggestions are welcome.

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  • EXPLAIN PLAN FOR in ORACLE

    - by Adnan
    I am making a test. I have all tests in rows, so my rows looks like this; ID | TEST ---------------------------------- 1 | 'select sysdate from dual' 2 | 'select sysdatesss from dual' Now I read it row by row and I need to test it with EXPLAIN PLAN FOR so the for the first row it would be EXPLAIN PLAN FOR select sysdate from dual but I have problem converting the TEST field. Right now I use; EXPLAIN PLAN FOR testing.TEST but it does not work. Any ideas?

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  • replace values in a String from a Hashtable in Java

    - by Adnan
    My string looks like; String values = "I am from UK, and you are from FR"; and my hashtable; Hashtable countries = new Hashtable(); countries.put("United Kingdom", new String("UK")); countries.put("France", new String("FR")); What would be the most effective way to change the values in my string with the values from the hashtable accordingly. These are just 2 values to change, but in my case I will have 100+

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