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  • jQuery: Scroll the window then addClass() - how to callback

    - by carillonator
    Inside a jQuery event handler, I would like to scroll the window and then add a class to something. This is my code: $('#foo').click(function() { window.scrollTo(y); $('#bar').addClass('active'); }); $(window).scroll(function() { $('#bar').removeClass('active'); }); Notice I have another handler to remove that same class whenever the window is scrolled. The scrolling part works fine, but seems to run asynchronously, so removeClass() happens after addClass() but before the scrolling is finished. I don't know how to do this in plain javascript. I know there is a jQuery scrollTop() function that does the same thing (but seems to have cross-browser issues), but it doesn't accept a callback. What I really need is a callback to add the class after the scrolling is finished. thanks!

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  • is the + in += on a Map a prefix operator of =?

    - by Steve
    In the book "Programming in Scala" from Martin Odersky there is a simple example in the first chapter: var capital = Map("US" -> "Washington", "France" -> "Paris") capital += ("Japan" -> "Tokyo") The second line can also be written as capital = capital + ("Japan" -> "Tokyo") I am curious about the += notation. In the class Map, I didn't found a += method. I was able to the same behaviour in an own example like class Foo() { def +(value:String) = { println(value) this } } object Main { def main(args: Array[String]) = { var foo = new Foo() foo = foo + "bar" foo += "bar" } } I am questioning myself, why the += notation is possible. It doesn't work if the method in the class Foo is called test for example. This lead me to the prefix notation. Is the + a prefix notation for the assignment sign (=)? Can somebody explain this behaviour?

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  • <button type="submit"> compatibility?

    - by Mark
    I'd like to have a submit button that submits a different value than is displayed on the button. With <input type="submit"> you can't seem to do this. With <button type="submit"> however, these can be two different values. The question is, will it work in all browsers? Trying this test code here: <form method="get" action=""> <input type="text" name="txt"/> <button type="submit" name="btn" value="val">text</button> </form> In FF 3.6 it updates my address bar with both values appropriately (and responds to me pressing enter in the text box). In IE 8, it also accepts pressing enter, displays the text value in the address bar, but it show the button's value as a GET param at all... does that mean it's not submitting it?

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  • : for displaying all elements in a multidimensional array in python 3.1.

    - by Leif Andersen
    I have a multidimensional array in python like: arr = [['foo', 1], ['bar',2]] Now, if I want to print out everything in the array, I could do: print(arr[:][:]) Or I could also just do print(arr). However, If I only wanted to print out the first element of each box (for arr, that would be 'foo', 'bar'), I would imagine I would do something like: print(arr[:][0]) however, that just prints out the first data blog (['foo', 1]), also, I tried reversing it (just in case): print(arr[0][:]) and I got the same thing. So, is there anyway that I can get it to print the first element in each tuple (other than: for tuple in arr: print(tuple[0]) )? Thanks.

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  • UISearchBarDisplayController - Fixed SearchBar

    - by slik
    I've been trying to get UISearchBarDisplayController to not animate, and stay fixed below the navigation bar. Is this even possible, I've been getting some weird results. This is all configured through a storyboard. I am just trying to figure out If I should just create my own implementation of UISearchBarDisplayController since it kinda seems a little impossible to customize it to my need. Clicking the search box When I start searching the top has extra paddding (20pt). It's assuming its on top of the origin y: 0 to prevent overlapping of status bar. I can't click outside or the cancel, x buttons. What happens If I click cancel, before searching

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  • Symfony on virtual host (document root problem)

    - by Martin Sikora
    Hello, I'm developing an application in Symfony and on localhost (XAMPP) I want to simulate the same conditions as on the webserver. The web server is configured as follows: /www => mydomain.com /foo => foo.mydomain.com /bar => bar.mydomain.com ... I'm going to put my Symfony application into /www direcotry so there'll be: /www /www/apps /www/apps/frontend /www/apps/frontend/... /www/apps/backend /www/apps/backend/... /www/cache /www/config ... and so on... /www/web The thing is that the document root is still set to the /www directory but Symfony expects it in the /www/web. Of course it will work if I call http://mydomain.com/web but I guess you understand this is quiet stupid solution. So my question is: Is there any way how can I change/bypass the default document root setting using .htaccess or whatever?

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  • INSERT INTO ... SELECT ... vs dumping/loading a file in MySQL

    - by Daniel Huckstep
    What are the implications of using a INSERT INTO foo ... SELECT FROM bar JOIN baz ... style insert statement versus using the same SELECT statement to dump (bar, baz) to a file, and then insert into foo by loading the file? In my messing around, I haven't seen a huge difference. I would assume the former would use more memory, but the machine that this runs on has 8GB of RAM, and I never even see it go past half used. Are there any huge (or long term) performance implications that I'm not seeing? Advantages/disadvantages of either?

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  • How to make the first invocation of a macro different from all the next ones ?

    - by LB
    Hi, that may be really simple but i'm unable to find a good answer. How can I make a macro representing first a certain value and then a different one ? I know that's nasty but i need it to implicitly declare a variable the first time and then do nothing. This variable is required by other macros that i'm implementing. Should i leverage "argument prescan" ? thanks for the answers. EDIT To make things clearer. Suppose i have a macro FOO, and I do something like FOO FOO FOO I would like the result to be foo bar bar I don't want the actual code to be cluttered by ifndef. The programmer should only have to write macro invocations.

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  • Process requires redirected input

    - by initialZero
    I have a UNIX native executable that requires the arguments to be fed in like this prog.exe < foo.txt. foo.txt has two lines: bar baz I am using java.lang.ProcessBuilder to execute this command. Unfortunately, prog.exe will only work using the redirect from a file. Is there some way I can mimic this behavior in Java? Of course, ProcessBuilder pb = new ProcessBuilder("prog.exe", "bar", "baz"); does not work. Thanks!

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  • Problem in to navigate on UITableView on the UIButtonClick which is present in UITabBarController sc

    - by Rajendra Bhole
    Hi, I develop an application in which i want to on UIButton Click the application navigate on UITableViewcontroller class.The UIButton is already on UITabBarController during the navigation the tab bar should be visible.The calling method in first tab bar controller class is, [appDelegate.nvcHome pushViewController:itemMenuTable animated:YES]; [itemMenuTable release]; itemMenuTable = nil; But it given me the following problem in GDB, Application tried to push a nil view controller on target . Also i want to display the icon and title of UITabBarController in programmatically, the code is, homeViewControllerLink = [[homeViewController alloc]initWithNibName:@"homeViewController" bundle:nil]; nvcHome = [[UINavigationController alloc]initWithRootViewController:homeViewControllerLink]; nvcHome.navigationBar.barStyle = UIStatusBarStyleBlackOpaque; UIImage *imgHomeTab = [UIImage imageNamed:@"home"]; [nvcHome.tabBarItem initWithTitle:@"Home" image:imgHomeTab tag:101]; [homeViewControllerLink release]; But it does not display when i running my app on iphone simulator.

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  • In the context of an asp.net website, what's the most efficient way to check whether a User has acce

    - by scaramouch
    I have a webpage that you pass in an id parameter (via a querystring), which it then uses to fetch data from a database. Typically, a user would navigate to this page from another page that lists only those records that the user has access to. However, if they go directly to the page by typing in the URL in the Address Bar, they can effectively view any record they like. Eg. If they were to type something like http://localhost/TestSite/ClientAdmin/ManageLocation.aspx?LocationID=5 into their Address Bar, they can access the database record with the LocationID equal to five - even though they shouldn't have access to it. Now, I could solve this by doing a database check every time the page is loaded to see whether the current user has access to the record they're trying to view. However this doesn't seem very efficient given that in most cases a user won't be trying to access a record that isn't theirs. Does anyone have a better suggestion? Thanks.

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  • How to test that invalid arguments raise an ArgumentError exception using RSpec?

    - by John Topley
    I'm writing a RubyGem that can raise an ArgumentError if the arguments supplied to its single method are invalid. How can I write a test for this using RSpec? The example below shows the sort of implementation I have in mind. The bar method expects a single boolean argument (:baz), the type of which is checked to make sure that it actually is a boolean: module Foo def self.bar(options = {}) baz = options.fetch(:baz, true) validate_arguments(baz) end def self.validate_arguments(baz) raise(ArgumentError, ":baz must be a boolean") unless valid_baz?(baz) end def self.valid_baz?(baz) baz.is_a?(TrueClass) || baz.is_a?(FalseClass) end end

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  • Enable vertical scrolling on textarea

    - by Hozefa
    I have a textarea that I want to enable vertical scrolling. When I exceed the height of the textarea, it increases in size. The scroll bar does not appear. I want that a vertical scroll bar appears and the users are not able to resize the text area as well. I searched online and tried solutions posted, but none seem to work. Demo: http://jsfiddle.net/hozefa/8fv6e/ CSS: #imageURLId{ font-size: 14px; font-weight: normal; resize: none; overflow-y: scroll; } HTML: <label for="aboutDescription" id="aboutHeading">About</label> <textarea rows="15" cols="50" id="aboutDescription" style="resize: none;"></textarea> <a id="imageURLId" target="_blank">Go to HomePage</a>

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  • An array of structures in C...

    - by 00010000
    For the life of me I can't figure out the proper syntax for creating an array of structures in C. I tried this: struct foo { int x; int y; } foo[][] = { { { 1, 2 }, { 4, 5 }, { -1, -1 } }, { { 55, 44 } { 100, 200 }, } }; So for example foo[1][0].x == 100, foo[0][1].y == 5, etc. But GCC spits out a lot of errors. If anyone could provide the proper syntax that'd be great. EDIT: Okay, I tried this: struct foo { const char *x; int y; }; struct foo bar[2][] = { { { "A", 1 }, { "B", 2 }, { NULL, -1 }, }, { { "AA", 11 }, { "BB", 22 }, { NULL, -1 }, }, { { "ZZ", 11 }, { "YY", 22 }, { NULL, -1 }, }, { { "XX", 11 }, { "UU", 22 }, { NULL, -1 }, }, }; But GCC gives me "elements of array bar have incomplete type" and "excess elements in array initializer".

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  • scala coalesces multiple function call parameters into a Tuple -- can this be disabled?

    - by landon9720
    This is a troublesome violation of type safety in my project, so I'm looking for a way to disable it. It seems that if a function takes an AnyRef (or a java.lang.Object), you can call the function with any combination of parameters, and Scala will coalesce the parameters into a Tuple object and invoke the function. In my case the function isn't expecting a Tuple, and fails at runtime. I would expect this situation to be caught at compile time. object WhyTuple { def main(args: Array[String]): Unit = { fooIt("foo", "bar") } def fooIt(o: AnyRef) { println(o.toString) } } Output: (foo,bar)

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  • Capture variable assignments in a Perl eval

    - by Bruce
    I would like to be able to capture variable assignments from a Perl eval. That is, to determine what variable names have been assigned to within the code and extract their value. For example if I run: eval '$foo=42; $bar=3.14;' The result of the eval is 3.14 (the last value evaluated), but I would also like to be able to determine the names "$foo" and "$bar" and their values (without knowing the names in advance). I have read up on a couple of ways of inserting variables into the eval block, through Safe and Eval::Context, but not yet any way of extracting them. I am more familiar with Python's eval/exec which have built in support for this.

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  • Creating a row of Three Boxes Seperated

    - by Frank G.
    I am new to css and I have a menu bar that I am working on however I am having a problem with one of the menu ("LINKS") items. If you roll over the Links menu item your notice I have three boxes there that I am trying to separate into there own area. Right now they are over lapping each other. Could you please tell me what I am doing wrong? I have tried margin-left and padding-left and I find that they either move the box further to the right or widen the box more. But they don't space them out. You can find the menu bar here: http://jsfiddle.net/vtjPR/

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  • Problem with Initializing Consts

    - by UdiM
    This code, when compiled in xlC 8.0 (on AIX 6.1), produces the wrong result. It should print 12345, but instead prints 804399880. Removing the const in front of result makes the code work correctly. Where is the bug? #include <stdio.h> #include <stdlib.h> #include <string> long int foo(std::string input) { return strtol(input.c_str(), NULL, 0); } void bar() { const long int result = foo("12345"); printf("%u\n", result); } int main() { bar(); return 0; } Compilation command: /usr/vacpp/bin/xlC example.cpp -g

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  • Making application menus on top of gnome shell

    - by GAP
    Is there a way to put gnome shell components (panel, message tray) to be appear below the popup menu's of other applications such as Java and Gtk Apps. The problem is when there are gtk apps which has tray icons the popup menu tends to appear below the message tray, this was bit ok now in 3.6 because the message tray hides soon as the icon is clicked. But the top bar is still a problem for large menus. When running eclipse with lot of options in the context menu the top most items including the scroll button are under top bar. Is there any thing i can change in the main.js or panel.js to get things below the popup menus ?

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  • python array.array with strings as data type

    - by Gladius
    Is there an object that acts like array.array, yet can handle strings (or character arrays) as its data type? It should be able to convert the string array to binary and back again, preferably with null terminated strings, however fixed length strings would be acceptable. >>> my_array = stringarray(['foo', 'bar']) >>> my_array.tostring() 'foo\0bar\0' >>> re_read = stringarray('foo\0bar\0') >>> re_read[:] ['foo', 'bar'] I will be using it with arrays that contain a couple million strings.

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  • Layout with divs... can you have too many?

    - by user1066982
    What is the best practice for developing a layout? Is better to limit divs? I was looking through the html/css of some popular sites and they all seem to have divs within divs. For instance, a div for the entire page, a div for the topbar, a div within the top bar for the logo, search bar, etc. Is this a good practice? I suppose it's easier to position all the divs correctly and than place the necessary elements within the divs. It's what I've been doing this far but want to make sure I'm learning the correct approach. Any help on this is appreciated. Thanks!

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  • How to make a call to an executable from Python script?

    - by fx
    I need to execute this script from my Python script. Is it possible? The script generate some outputs with some files being written. How do I access these files? I have tried with subprocess call function but without success. fx@fx-ubuntu:~/Documents/projects/foo$ bin/bar -c somefile.xml -d text.txt -r aString -f anotherString >output The application "bar" also references to some libraries, it also creates some files besides the output. How do I get access to these files? Just by using open()? Thank you,

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  • Updating table from async task android

    - by CantChooseUsernames
    I'm following this tutorial: http://huuah.com/android-progress-bar-and-thread-updating/ to learn how to make progress bars. I'm trying to show the progress bar on top of my activity and have it update the activity's table view in the background. So I created an async task for the dialog that takes a callback: package com.lib.bookworm; import android.app.ProgressDialog; import android.content.Context; import android.os.AsyncTask; public class UIThreadProgress extends AsyncTask<Void, Void, Void> { private UIThreadCallback callback = null; private ProgressDialog dialog = null; private int maxValue = 100, incAmount = 1; private Context context = null; public UIThreadProgress(Context context, UIThreadCallback callback) { this.context = context; this.callback = callback; } @Override protected Void doInBackground(Void... args) { while(this.callback.condition()) { this.callback.run(); this.publishProgress(); } return null; } @Override protected void onProgressUpdate(Void... values) { super.onProgressUpdate(values); dialog.incrementProgressBy(incAmount); }; @Override protected void onPreExecute() { super.onPreExecute(); dialog = new ProgressDialog(context); dialog.setCancelable(true); dialog.setMessage("Loading..."); dialog.setProgress(0); dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); dialog.setMax(maxValue); dialog.show(); } @Override protected void onPostExecute(Void result) { super.onPostExecute(result); if (this.dialog.isShowing()) { this.dialog.dismiss(); } this.callback.onThreadFinish(); } } And in my activity, I do: final String page = htmlPage.substring(start, end).trim(); //Create new instance of the AsyncTask.. new UIThreadProgress(this, new UIThreadCallback() { @Override public void run() { row_id = makeTableRow(row_id, layout, params, matcher); //ADD a row to the table layout. } @Override public void onThreadFinish() { System.out.println("FINISHED!!"); } @Override public boolean condition() { return matcher.find(); } }).execute(); So the above creates an async task to run to update a table layout activity while showing the progress bar that displays how much work has been done.. However, I get an error saying that only the thread that started the activity can update its views. I tried doing: MainActivity.this.runOnUiThread(new Runnable() { @Override public void run() { row_id = makeTableRow(row_id, layout, params, matcher); //ADD a row to the table layout. } } But this gives me synchronization errors.. Any ideas how I can display progress and at the same time update my table in the background? Currently my UI looks like:

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  • How to access constant defined in child class from parent class functions?

    - by kavoir.com
    I saw this example from php.net: <?php class MyClass { const MY_CONST = "yonder"; public function __construct() { $c = get_class( $this ); echo $c::MY_CONST; } } class ChildClass extends MyClass { const MY_CONST = "bar"; } $x = new ChildClass(); // prints 'bar' $y = new MyClass(); // prints 'yonder' ?> But $c::MY_CONST is only recognized in version 5.3.0 or later. The class I'm writing may be distributed a lot. Basically, I have defined a constant in ChildClass and one of the functions in MyClass (father class) needs to use the constant. Any idea?

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  • Can I dynamically adjust the height of a css set div border?

    - by Jeff
    Ok so I have a div that contains a few forms that have dynamically generated content. There are categories, that if you click on, slide/toggle down to reveal that categories sub-contents, or projects. Right now, I have it setup so that if the height of the div expands to exceed a set amount, a scroll bar shows up at the side, and the user can scroll down and see the content. NOW I am being asked to get rid of the scroll bar, and just have the div's border (which is just 1px set in the css) height adjust dynamically with the height of the div's content...can I even do that? Is there some sort of jquery animation that would allow that? A point in the right direction would be greatly appreciated!! Thanks

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