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  • How come $(this) is undefined after ajax call

    - by JohnnyQ
    I am doing an ajax request when an anchor tag is clicked with an ID set to href. Btw, this anchor tag is dynamically created. <a href="983" class="commentDeleteLink">delete</a> When the anchor tag is clicked the following code is executed: $('.commentDeleteLink').live('click', function(event) { event.preventDefault(); var result = confirm('Proceed?'); if ( result ) { $.ajax({ url: window.config.AJAX_REQUEST, type: "POST", data: { action : 'DELCOMMENT', comment : $('#commentText').val(), comment_id : $(this).attr('href') }, success: function(result) { alert($(this).attr('href')); //$(this).fadeOut(slow); } }); } }); When I tried to display $(this).attr('href') it says it's "undefined". What I really want to do is fadeOut the anchor tag but when I investigated the value of $(this) it is "undefined". What could be wrong with the snippet above?

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  • Block call in Ruby on Rails

    - by Mattias
    Hi, I'm trying to clean up my code and get rid of a lot of ugly hashes. In my views I define several actions like this: @actions = { :interest => {'Show interest', link_to(..), :disabled => true}, :follow => {'Follow this case', link_to(..)} ... } As these hashes grow, the maintainability decreases. I want to convert the above format to something like: actions do item :interest, 'Show interest', link_to(..), :disabled => true item :follow, 'Follow', link_to(..) ... end How do I structure my helper methods to allow this? Preferably the 'item'-method should only be available in the 'actions' block and not in the global scope. Thanks!

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  • Message box does not work in release mode

    - by Bi
    I have the following code in a C# windows form application. if (myGrid.Rows.Count != 0) { // do something } else { MessageBox.Show("Test"); } The message box shows up in Debug mode but not in release mode. Any idea why? I am having similar issues with other code as well For instance if (!myParameter) this.mycheckBox.Enabled = false; else this.mycheckBox.Enabled = true; The above code works in debug mode not in release. Not sure why. Thanks

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  • onPerformSync() is not triggered after ContentResolver.requestSync() call

    - by mark
    I am trying to implement sync adaptor, I have followed This guide. But onPerformSync() is not triggered after ContentResolver.requestSync() call . I have also tried some other tutorials and tried to run their code, but still same issue. Please tell me does I need to do some extra configuration for this. My code of triggering sync operation is as folows : Account newAccount = new Account(GlobalInfo.ACCOUNT, GlobalInfo.ACCOUNT_TYPE); AccountManager accountManager = (AccountManager) this.getSystemService(ACCOUNT_SERVICE); accountManager.addAccountExplicitly(newAccount, null, null); ContentResolver.requestSync(newAccount,GlobalInfo.AUTHORITY, Bundle.EMPTY); Please guide me to solve this issue. EDIT : Accounted created (in Settings - Accounts and Sync settings) by above code showing sync is off

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  • Set the thumbImage and watch the slider-bar disappear?

    - by Roberta
    [sld1 setThumbImage:[UIImage imageNamed:@"Blue.png"] forState:UIControlStateHighlighted]; [sld1 setThumbImage:[UIImage imageNamed:@"Blue.png"] forState:UIControlStateNormal ]; Would that cause the slider-bar image to disappear? Mine are all gone. (The thumb-image displays just fine.) Apple's docs make it sounds like I can use any ONE of above 2 lines of code. (But I guess I really need both.) And I can't find anything about "you must always do all 4": Set the normal-state image. Set the highlighted-state image. Set the setMinimumTrackImage. Set the setMaximumTrackImage.

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  • click event being fired twice - jquery

    - by maxp
    I have the following simplified html: <div class="foo" style="width:200px; height:200px;"> <input type="checkbox" /> </div> <script type="text/javascript"> $('.foo').click(function(){$(this).find('input:checkbox')[0].click();}); </script> Clicking the 200x200 div 'foo' works well, and raises the click event for the checkbox inside it. However when I exactly click the checkbox itself, it fires its 'normal' event, plus the jquery bound event above, meaning the checkbox checks itself, then unchecks itself again. Is there a tidy way to prevent this from happening?

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  • Generate multiple attribute?

    - by acidzombie24
    ATM i cant quiet imagine how this will work. I'm sure it can be done. I notice a pattern use in my attribute where i always use 3 specific attributes together. Take the below as an example [MyAttr(4, @"a"), MyAttr(41, "b"), MyAttr(45, "ab")] Mine is much more complicated but i would like to define one attribute with more params to generate the data above. How might i do that? Lets say my one attribute will look like this MyAttr2(4, 41, "a", "b"); //4+41=45, "a"+"b" = "ab" How might i generate the 3 MyAttr to apply to a class using MyAttr2?

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  • Button height rendering inconsistency in Firefox - why are input elements taller?

    - by George Edison
    Consider the following two elements: <button type="submit" class="button">Test</button> <a href="#" class="button">Test 2</a> ...which use the following style definition: .button { background-color: yellow; color: white; border: 1px solid orange; display: inline-block; font-size: 24pt; padding: 2px 16px; text-decoration: none; } This produces two buttons beside each other with an equal height in Chrome. However, Firefox renders the button on the left with a height 1px greater than the button on the right (the <a>): (I've enlarged the image above by 2x.) What do I need to do to get the two buttons to have the same height? It seems like the font-size is causing the problem - but I need that attribute. Fiddle: http://jsfiddle.net/FfRPY/

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  • How to re-open a closed file descriptor

    - by chaitu
    I have a scenario where i created pipe for communication between two child and parent. Parent writes (using write function)data to the pipe and closes the respective file descriptor. The problem is when i want to write data again to the pipe, the write function is returning error code -1. I think its because writing end has been closed in previous iteration. Then how to open the corresponding file descriptor after it has been closed once. I tried using open() function which requires path to some file as arguement. But i am not using any files in my application. I have simple file descriptors (int arr[2]). Is it possible to achieve above scenario with pipes????

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  • Ignoring files and folders in an svn-controlled folder?

    - by user246114
    Hi, I'm using svn on a mac. I'm trying to add an eclipse project to a repo. I want to ignore all .class files, and a few subfolders. I tried the following: svn propset svn:ignore *.class . property 'svn:ignore' set on '.' svn propset svn:ignore eclipse/.metadata/ . property 'svn:ignore' set on '.' so I think it's working, but then I do: svn add toplevelfolder and it still adds all .class files and folders I tried to ignore above. What's the right way to do this? Thanks

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  • SQLite issues, escaping certain characters...

    - by CODe
    I'm working on my first database application. It is a WinForms application written in C# using a SQLite database. I've come across some problems, when a apostrophe is used, my SQLite query fails. Here is the structure of my queries. string SQL = "UPDATE SUBCONTRACTOR SET JobSite = NULL WHERE JobSite = '" + jobSite + "'"; For instance, if an apostrophe is used in the jobSite var, it offsets the other apostrophes in the command, and fails. So my questions are: 1. How do I escape characters like the apostrophe and semicolon in the above query example? 2. What characters do I need to escape? I know I should escape the apostrophe, what else is dangerous? Thanks for your help!

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  • removing image tag from memory

    - by Chapsterj
    I have seen some code to check if a background image on a div is loaded. What they are doing is adding a img tag to memory but storing it in a variable and using that to see if the image is loaded with the load event. My question is does the $img tag stay in memory and how would I be able to remove that tag when the load event has been called. var $div = $('div'), bg = $div.css('background-image'); if (bg) { var src = bg.replace(/(^url\()|(\)$|[\"\'])/g, ''), $img = $('<img>').attr('src', src).on('load', function() { // do something, maybe: $div.fadeIn(); }); } }); I got this code above from this post

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  • Dealing with video (DVDs, .avi .mkv) in Java

    - by berry120
    After looking around for a decent library for playing videos in Java, I've come unstuck. Everyone around is screaming not to use JMF because it's outdated, old and requires the user to install it, other alternatives such as VLCJ seem good if they work but are still relatively unstable and rely on hefty amounts of native code, and as for dealing with DVDs, I haven't found a single option available! Weighing up my options at the moment, it seems like realistically it's either JMF (despite its disadvantages) or waiting until JavaFX 2.0 comes out and then using that. VLCJ just seems too unstable which isn't really something I can live with. Are there any sensible options other than the ones I've listed above, and what would you go for? I'm not against native code per-se, but it has to be reliable and work on Windows, Mac and Linux.

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  • Select <a> which is the second <a> on a page that contains some href text?

    - by Alex
    Hello there, I'm working with a page that has several links that contain the same href text, and I need to select the second anchor element on the page that contains said href text. Here's a simplified version of the link structure of the page: <a href="same/link/to/stuff/">same link</a> <a href="same/link/to/stuff/">same link</a> How do I fashion my selector so that it only selects the second anchor in the above example? Thanks!!

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  • Downloading image from server without file extension (NSData to UIImage)

    - by Msencenb
    From my server I'm pulling down a url that is supposed to simply be a profile image. The relevant code for pulling down the image from the urls is this: NSString *urlString = [NSString stringWithFormat:@"%@%@",kBaseURL,profile_image_url]; profilePic = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:urlString]]]; My url is in the format (note no file extension on the end since its dynamically rendered) localhost:8000/people/1/profile_image If I load the url in my browser the image displays; however the code above for pulling down the UIImage does not work. I've verified that the code does pull an image from a random site on the interwebs. Any thoughts on why this is happening?

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  • Matplotlib Contour Clabel Location

    - by jotimaz
    I would like to control the location of matplotlib clabels on a contour plot, but without utilizing the manual=True flag in clabel. For example, I would like to specify an x-coordinate, and have labels created at the points that pass through this line. I see that you can get the location of the individual labels using get_position(), but I am stuck at that. Any help would be greatly appreciated. Thanks! EDIT: The above image is an example plot that I would like to apply this method to. The default label positions are inconvenient -- the flat areas between Day 2 and Day 4 would be more visually appealing.

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  • Very simple mod_rewrite questions

    - by Camran
    1- Does mod_rewrite means that if I make this url: domain.com/ad.php?id=8498292 INTO domain.com/8498292 that all links on my website will have to be changed to the later above? example the link: domain.com/ad.php?id=8498292 wont work now, unless I replace it with domain.com/8498292 ? Or will the server know that they are the same still? 2- Will the rewritten link appear rewritten in the browsers adress bars also, so if I enter domain.com/ad.php?id=8498292 it will actually appear as domain.com/8498292 in the adress bar itself? 3- Will images and all other related links and material on the page whose link is rewritten remain intact? ie will pictures and links still work FROM that page which are relative? Thanks

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  • change the value of the input element

    - by Lina
    Hi, the following code is costing me a lot of precious time, can anybody help me on this?? <div id="i"> <input id="Text1" type="text" value="hello" onClick="hello();"/> </div> <script> function hello() { var x = $("#i").html(); var y = $(x).val(); alert(y); } </script> in the case above the word "hello" is alerted each and every time, what if i want to alert the user input??? i.e. how do i change the "value" attribute of the input field???? thanks a trillion

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  • singleton pattern in java- lazy Intialization

    - by flash
    public static MySingleton getInstance() { if (_instance==null) { synchronized (MySingleton.class) { _instance = new MySingleton(); } } return _instance; } 1.is there a flaw with the above implementation of the getInstance method? 2.What is the difference between the two implementations.? public static synchronized MySingleton getInstance() { if (_instance==null) { _instance = new MySingleton(); } return _instance; } I have seen a lot of answers on the singleton pattern in stackoverflow but the question I have posted is to know mainly difference of 'synchronize' at method and block level in this particular case.

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  • ruby regex links not already in anchor tag

    - by dorelal
    I am using ruby 1.8.7. I am not using rails. How do I find all the links which are not already in anchor tag. s = %Q{ <a href='www.a.com'><b>www.a.com</b></a> www.b.com <div>www.c.com</div> } The output of above string should be www.b.com www.c.com I know "b" tag before www.a.com complicates the case but that's what I have to work with.

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  • Using preg_match as boolean AND array

    - by silow
    I have this code where preg_match is used to break up a string into $pmarr array. Index 1 of that array is then being used to set a value $val = $pmarr[1]. $pmarr = array(); if (preg_match($expression, $orig, $pmarr)) { $val = $pmarr[1]; } What I'm wondering about is why the preg_match itself is being used as a boolean. If the expression doesn't match, does the array stay empty and therefore equate to false? Is the above code the same as saying preg_match($expression, $orig, $pmarr); if(isset($pmarr[1]) AND !empty($pmarr[1])){ $val = $pmarr[1]; }

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  • How to choose programaticaly the column to be queried by Linq using PropertyInfo???

    - by Richard77
    Hello, I would like to control how linq querries my database programaticaly. For instance, I'd like to query the column X, column Y, or column Z, depending on some conditions. First of all, I've created an array of all the properties inside my class called myPropertyInfo. Type MyType = (typeOf(MyClass)); PropertyInfo[] myPropertyInfo = myType.GetProperties( BindingFlags.Public|BindingFlags.Instance); The myPropertyInfo array allows me to access each property details (Name, propertyType, etc) through the index*[i]* Now, how can I use the above information to control how linq queries my DB? Here's a sample of a querry I'd like to exploit. var myVar = from tp in db.MyClass select tp.{expression}; Expression using myPropertyInfo[i] to choose which property(column) to query. I'm not sure if that's the way of doing it, but if there's another way to do so, I'll be glad to learn. Thanks for helping.

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  • Is it possible to block a certain character or group of characters from entering into text box or an

    - by Param-Ganak
    Hello friends! I have a text input field like text box or text area. I want to prevent the user from entering certain character or a group of characters. That is for example if I dont want # * @ and numbers from 0-9 these characters. So Whenever user press any of the above character key then that character should not appear in to an input field. It means directly blocking that character. Is this possible in Jquery? Please give me some guidelines to achive it. Thank You

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  • Casting in mixed type calculations in C?

    - by yCalleecharan
    Hi, If I define these variables: double x0, xn, h; int n; and I have this mathematical expression: h = (xn - x0)/n; Is it necessary that I cast n into double prior doing the division for maximum accuracy like in h = (xn - x0)/ (double) n; I wrote a program to check the above but both expressions give the same answers. I understand that C will promote the integer to double type as variables xn and x0 are of type double but strangely enough in a book, the second expression with casting was emphasized. Thanks a lot...

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  • How can i add column name in list generic?

    - by Phsika
    class MyExcelSheets { public List MyColumnNames { get; set; } } how can i add Excel data's column name in "List MyColumnNames ". it returns to me Object reference not set to an instance of an object. i want to use above class in: myexcelSheet = new MyExcelSheets(); myexcelSheet.MyColumnNames = new MyExcelSheets().MyColumnNames; foreach (DataColumn col in dTable.Columns) myexcelSheet.MyColumnNames.Add(col.ColumnName.ToString()); How can i solve it? Error: NullReferenceException

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