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• Micro sound breaks/interrupts on Windows 7

  - by cand

  Hello all, I've been experiencing strange behavior recently. When listening to mp3 or watching movie or whatever that uses sound, I get micro breaks in sound. It's like it hangs or cuts a fragment for about 0.5s. When I start OS, it's ok, but as time passes it gets worse, to the extent that music is unlistenable being interrupted every 2 seconds. I haven't found any relevance between this behavior and hardware usage, I don't think it's directly related to HDD (or it might be but with significant delay). I have updated soundcard drivers and it didn't help a lot. My system is Windows 7, computer is simple HP laptop, nx7300-Ru374ES with WD Caviar Scorpio Blue hard drive inside and integrated soundcard on it (I can check the model later if it's important). Did anybody encounter such problem ? Maybe it's a common thing on Windows 7 or someone knows how to solve it? Thanks in advance.

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• Why does virtual assignment behave differently than other virtual functions of the same signature?

  - by David Rodríguez - dribeas

  While playing with implementing a virtual assignment operator I have ended with a funny behavior. It is not a compiler glitch, since g++ 4.1, 4.3 and VS 2005 share the same behavior. Basically, the virtual operator= behaves differently than any other virtual function with respect to the code that is actually being executed. struct Base { virtual Base& f( Base const & ) { std::cout << "Base::f(Base const &)" << std::endl; return *this; } virtual Base& operator=( Base const & ) { std::cout << "Base::operator=(Base const &)" << std::endl; return *this; } }; struct Derived : public Base { virtual Base& f( Base const & ) { std::cout << "Derived::f(Base const &)" << std::endl; return *this; } virtual Base& operator=( Base const & ) { std::cout << "Derived::operator=( Base const & )" << std::endl; return *this; } }; int main() { Derived a, b; a.f( b ); // [0] outputs: Derived::f(Base const &) (expected result) a = b; // [1] outputs: Base::operator=(Base const &) Base & ba = a; Base & bb = b; ba = bb; // [2] outputs: Derived::operator=(Base const &) Derived & da = a; Derived & db = b; da = db; // [3] outputs: Base::operator=(Base const &) ba = da; // [4] outputs: Derived::operator=(Base const &) da = ba; // [5] outputs: Derived::operator=(Base const &) } The effect is that the virtual operator= has a different behavior than any other virtual function with the same signature ([0] compared to [1]), by calling the Base version of the operator when called through real Derived objects ([1]) or Derived references ([3]) while it does perform as a regular virtual function when called through Base references ([2]), or when either the lvalue or rvalue are Base references and the other a Derived reference ([4],[5]). Is there any sensible explanation to this odd behavior?

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• Synergy client drops and reconnects at UAC dialog

  - by sidran32

  I've been using Synergy for a while at work to connect my XP machine (the host) to my Win 7 laptop (the client). I previously was having issues with using Synergy and the UAC prompt, as described in this question, and have had no issues since, until recently. I upgraded to Synergy 1.4.10 and now am seeing odd behavior whenever a UAC prompt appears on my laptop. When the UAC prompt appears on my laptop, Synergy momentarily drops its connection to my laptop, causing my mouse and keyboard focus to revert to my host machine (the XP machine). After about a second or so, though, the connection gets re-established and I am able to type and use the mouse buttons in the UAC prompt. Once the prompt clears, the connection drops again for a second, and then gets re-established again. Is this something to do with configuration or perhaps should I just chalk it up to a change in behavior in version 1.4.10?

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• Context menu on Intellj IDEA

  - by Otavio Macedo

  I have installed Intellij IDEA 10 on Linux (Ubuntu 8.04) and the way the context menu works is annoying me. The context menu is visible as long as I keep the right button pressed (if I release the button, the menu disappears). To click on a menu item, I have to position the cursor upon the item with the right button pressed and then release it. I've also figured out two alternative ways to keep the menu visible with the right button released: To right-click, drag, and release the button outside the context menu. Ctrl + Right-click or Shift + Right-click But I would expect the "normal" behavior: that when I right-click and release, the menu keeps visible until the next click (on an item or outside the menu). Is there a way to change this behavior? Thanks in advance.

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• My helper methods in controller

  - by FancyDancy

  My app should render html, to answer when a user clicks ajax-link. My controller: def create_user @user = User.new(params) if @user.save status = 'success' link = link_to_profile(@user) #it's my custom helper in Application_Helper.rb else status = 'error' link = nil end render :json => {:status => status, :link => link} end My helper: def link_to_profile(user) link = link_to(user.login, {:controller => "users", :action => "profile", :id => user.login}, :class => "profile-link") return(image_tag("/images/users/profile.png") + " " + link) end I have tried such methods: ApplicationController.helpers.link_to_profile(@user) # It raises: NoMethodError (undefined method `url_for' for nil:NilClass) and: class Helper include Singleton include ApplicationHelper include ActionView::Helpers::TextHelper include ActionView::Helpers::UrlHelper include ApplicationHelper end def help Helper.instance end help.link_to_profile(@user) # It also raises: NoMethodError (undefined method `url_for' for nil:NilClass) In addition, yes, I KNOW about :helper_method, and it works, but i don't want to overload my ApplicationController with a plenty of that methods

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• Accessing HTML 5 Video Progress Event with jQuery

  - by jnolte

  Hello All, The below is for an HTML5 video player event. My partner and I have been stumped for a very large portion of the day on this issue and hope someone can lend some insight on the issue. We have been able to access the progress event with plain js as seen below but when trying to access this with jQuery we get undefined in console. Any help/ recommendations are greatly appreciated. //JS - Works like a charm document.addEventListener("DOMContentLoaded", init, false); function init() { var v = document.getElementById('test-vid'); console.log(v) v.addEventListener('progress', progress, false); } function progress(e) { console.log(e.lengthComputable + ' ' + e.total + ' ' + e.loaded); } // jQuery - NO BUENO - Undefined rendered in console var vid = $('#test-vid'); $(vid).bind("progress", function(e){ console.log(e.total + ' ' + e.loaded + ' ' + e.lengthComputable ); }); Thanks in advance, JN

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• convert xml.documentElement.getElementsByTagName("marker")[index].getAttribute(temp) to string in ja

  - by user324884

  I am parsing xml file in javascript and after that want to cancatenate all the the data into string. but failing to do the same and it is returning undefined. GDownloadUrl("./include/dataemp2.xml", function(data) { var xml = GXml.parse(data); markers = xml.documentElement.getElementsByTagName("marker"); for(var t=0;t<18;t++) { var temp= markers[index].getAttribute("address"); html = html + temp; } }); it is returning as undefined because temp is not concatenating in "html"; whereas when i do this like html = html +markers[index].getAttribute("address"); it is giving me expected output;

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• Using Rails 3 and Haml 3, how do I configure Haml?

  - by dpogg1

  I'm using Rails 3.0.0.beta3 and Haml 3.0.0.rc.2, and I can't find where I need to place the configuration lines for Haml (nor what they are in the new version, for that matter). Using Rails 2.3.5 and Haml 2, I would do Haml::Template.options[:format] = :html5 in environment.rb. Or, in Sinatra, set :haml, {:format => :html5} in my main file. But in Rails 3 everything's been changed around, and no matter where I put that configuration line, I get an undefined method or undefined object error.

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• How disable Apple iCal from popping up with every email invite/update?

  - by Sean

  My iCal has new behavior (since upgrading to SL). Every time I get an ical attachment in Mail, the iCal app flies up in my face. I don't see any way to turn off this behavior and it's amazingly disruptive when I'm busy with other activities. Help? EDIT: I want iCal to add the invitations, so when I cmd-tab to the app those items are in the queue awaiting approval. What I am hoping to learn is how to stop the popup action forcing the application to become the top-level window.

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• How can I make XOR work for logical matrix in MATLAB?

  - by Runner

  >> XOR(X,X) ??? Undefined function or method 'XOR' for input arguments of type 'logical'. Why XOR can't be used for logical matrix? And I tried a more simple example: >> A=[1 0;1 0]; >> B=[1 1;0 0]; >> XOR(A,B) ??? Undefined function or method 'XOR' for input arguments of type 'double'. How can I properly use XOR?

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• Difficulty with MooTools Class.extend

  - by Erin Drummond

  Consider the following code: var Widget = new Class({ Implements: [Options], options: { "name" : "BaseWidget" }, initialize: function(options) { alert("Options are: " + JSON.stringify(options)); //alerts "Options are: undefined" this.setOptions(options); alert("My options are: " + JSON.stringify(this.options)); //alerts "My options are: { 'name' : 'BaseWidget' }" }, getName: function() { return this.options.name; } }); var LayoutWidget = Widget.extend({ initialize: function() { this.parent({ "name" : "Layout" }); } }); alert(new LayoutWidget().getName()); //alerts "BaseWidget" I am having difficulty in determining why the argument passed in the "this.parent()" call in "initialize" function of LayoutWidget is coming through as "undefined" in the initialize function of Widget. I am using MooTools 1.2.2. Would somebody be able to point me in the right direction?

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• How do I keep the URL in the address bar when stopping page load in Firefox

  - by Peter Jaric

  Suppose I am visiting a page in Firefox and decide to go somewhere else and type the new URL manually into the address field, but the page fails to load, either because it times out, or because I hit Escape. Then Firefox removes my laboriously entered URL and replaces it with the URL of the current page. This is outrageous! I am pretty sure Firefox has changed this behavior lately, because this was one of the reasons I chose Firefox over IE back in the day. How can I turn off this annoying behavior? OS: Windows 7 Firefox version: 22

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• Isn't the C++ standard library backward-compatible?

  - by Chris Metzler

  Hi. I'm working on a 64-bit Linux system, trying to build some code that depends on third-party libraries for which I have binaries. During linking, I get a stream of undefined reference errors for one of the libraries, indicating that the linker couldn't resolve references to standard C++ functions/classes, e.g.: librxio.a(EphReader.o): In function `gpstk::EphReader::read_fic_data(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)': EphReader.cpp:(.text+0x27c): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::__ostream_insert<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*, long)' EphReader.cpp:(.text+0x4e8): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::__ostream_insert<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*, long)' I'm not really a C++ programmer, but this looks to me like it can't find the standard library. Doing some more research, I got the following when I looked at librxio's dependency for the standard library: $ ldd librxio.so.16.0 ./librxio.so.16.0: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.9' not found (required by ./librxio.so.16.0) libm.so.6 => /lib64/libm.so.6 (0x00002aaaaad45000) libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00002aaaaafc8000) libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00002aaaab2c8000) libc.so.6 => /lib64/libc.so.6 (0x00002aaaab4d7000) /lib64/ld-linux-x86-64.so.2 (0x0000555555554000) So I read that as saying that librxio (one of the third-party libraries) requires at least v3.4.9 of the standard library. But the version I have installed is 4.1.2: $ rpm -qa | grep libstdc compat-libstdc++-33-3.2.3-61.x86_64 libstdc++-devel-4.1.2-14.el5.i386 libstdc++-devel-4.1.2-14.el5.x86_64 libstdc++-4.1.2-14.el5.x86_64 libstdc++-4.1.2-14.el5.i386 Shouldn't this work? The shared object major number is 6, same as for v3.4.9. At this level, shouldn't this be backward compatible? It seems like the third-party library is looking for an earlier version of the standard library than what I have installed; but isn't there backward compatibility between versions with the same major number for the shared library? Again, I'm not really a C++ programmer; but I don't see what the problem is. Any advice greatly appreciated. Thanks.

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• In Applescript, why do local variables in handlers capture "with" labeled parameters?

  - by outis

  In Applescript, if you declare a handler using "with" labeled parameters, local variables get the values of the arguments and the parameters themselves are undefined. For example: on bam of thing with frst and scnd local eat_frst return {thing: thing, frst:frst, scnd:scnd} -- this line throws an error end bam bam of "bug-AWWK!" with frst without scnd results in an error message that "scnd" isn't defined in the second line of bam. thing and frst are both defined, getting the arguments passed in the call to bam. Why is this happening? Why is scnd undefined? Note: I know that declaring variables as "local" within a handler is unnecessary. It's done in the examples for illustrative purposes.

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• How to force a "do you really want to shutdown?" dialog in Windows 7?

  - by Vokuhila-Oliba

  Sometimes I want to choose "Logout current user", but then I hit "Shutdown" by accident. Nearly everywhere else Windows 7 is asking "do you really want to do this? Yes/No" - but that's not the case when I hit the "Shutdown" button. Windows 7 shuts down immediately without giving me the chance to correct my mistake. So I am wondering - why does Windows shut down immediately without asking "really do that?" in this case? Is there a way to change this behavior? For example, could I force Windows to display a dialog asking "Do you really want to shutdown?"? I tried to change this behavior with the policy editor. It seems to be very easy to completely remove the Shutdown button from the Start menu, but I couldn't find an entry to turn on such a Yes/No dialog.

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• Cannot move Google Chrome tabs to different monitor in ubuntu

  - by Moses

  When I use Chrome in Windows, I can grab a tab and drag it over to my second monitor and it will automatically maximize. In ubuntu, when I try to do the same, the tab will snap back to my primary monitor and maximize there. There is a related bug report for Chromium that is labeled "fixed" here, but when I try using Chromium instead of Chrome, I get the same behavior (not what I called fixed). So far the only other thing I've tried is changing themes, resetting Chrome's settings to default and tested Chromium as I pointed out above. I've also tried installing Chrome from a live Linux disc, and the behavior is still the same. The issue does not occur with Firefox, but I need to use Chrome for work-related reasons, so simply switching isn't really an option personally (though it is a viable workaround). I'm using Chrome 30 and ubuntu 13.04. Does anyone have any solutions?

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• Slideshow screensaver in Win-7 vs. XP

  - by daveh551

  Since I skipped Vista, this may be an old question, I don't know. In XP, the built-in SlideShow (Photos) screensaver would randomly rotate among images not just in the directory specified in the settings, but also in any sub-directories (and on down) of that directory. When I use the Photos screensaver in Win-7, it seems to use only images in the directory I specify, ignoring the rest of the tree below that. Is there a way to get the XP behavior? Alternatively, is there some other public domain/open source Screen Saver with that or similar behavior that I can install?

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• Call JavaScript function from Silverlight 4.0 application

  - by Raha

  I am trying to call a function from a Silverlight application. It should be a very simple task to do but so far I am not getting the result that I am looking for. This is my Silverlight code: private void button2_Click(object sender, RoutedEventArgs e) { HtmlPage.Window.Invoke("SayHello", new string[] { "Salut!" }); } And this is the JavaScript code : function SayHello(theid) { alert(eval(theid)); var divStatusDiv = document.getElementById("divStatus"); divStatusDiv.style.backgroundColor = "Red"; } The alert message always show "undefined" but when I press "OK" the colour of that DIV gets changed to Red as it should be. Why am I getting "Undefined" all the time ?

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• Fix YAML syntax highlighting in VIM

  - by Kevin Burke

  The YAML syntax highlighting in Vim 7.3 isn't great. Putting an apostrophe in a line of text triggers quote highlighting even when there's no quote. The same thing happens in other files sometimes too. I've posted a screenshot below. Is there any way to fix this behavior, or is there a different YAML syntax file I can use that won't trigger this behavior? This occurs in both MacVim and Vim in the Terminal. I'm running v7.3. Thanks for your help, Kevin

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• how do I assign a variable to a returned response in jQuery

  - by netrox

  I wanted to assign a returned value (just text) to a variable in jQuery. I wrote this: var hm=22; $.ajax({ type: "GET", url: "ajax_check_match.php", dataType: "text", success:callback }); function callback(data, status) { // assign ajaxed value to cm variable cm=data; if (hm != cm) { dosomething(); } } But it fails every time. Why is that the cm variable keeps getting undefined when it sends request. I set the php file to return 1 and it still says undefined. I opened ajax_check_match.php in browser and I see "1". I didn't see the point of using XML or JSON since a simple number would suffice. Or do I have to use XML/JSON?

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• Website: Requested filename being rewritten

  - by horatio

  I have been unable to find an answer via search. I have a website (I do not administer the servers) where the server will serve a different file than the one requested. I first noticed this when using a filename of the following form: _foo.php (single underscore) If I request foo.php (does not exist), the server returns _foo.php. By "returns" I mean that the server decides I meant _foo.php, processes the php file, and serves the output. If I request afoo.php, zfoo.php, or even __foo.php (two underscores) (these files do not exist) the server returns _foo.php. If I request aafoo.php, the server returns 404. To sum up: the server seems to be doing a partial filename match. My question is: what is happening and is this accepted behavior for a web server (or standard behavior of a common mod/package/etc)?

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• MacBook Pro Trackpad freeze / holds click on its own

  - by lajuette

  My MacBook Pro's Trackpad shows an annoying behavior in the last few days. I think the only relevant thing that changed is the firmware for the Trackpad. An update has been distributed via Software Update a few days ago. Sometimes when i click somewhere the Trackpad won't recognize the mouseup, i.e. hold the click on its own. Clicking again seems to stop the holding and issue a new mousedown, but then again, no mouseup I.e. when i click on a file on the desktop the file will be dragged. But i can't stop dragging! Clicking in a browser or text document will select the text/images. Did anyone notice similar behavior? Any ideas or fixes?

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• JScript JSON Object Check

  - by George

  I'm trying to check if json[0]['DATA']['name'][0]['DATA']['first_0'] exists or not when in some instances json[0]['DATA']['name'] contains nothing. I can check json[0]['DATA']['name'] using if (json[0]['DATA']['name'] == '') { // DOES NOT EXIST } however if (json[0]['DATA']['name'][0]['DATA']['first_0'] == '' || json[0]['DATA']['name'][0]['DATA']['first_0'] == 'undefined') { // DOES NOT EXIST } returns json[0]['DATA']['name'][0]['DATA'] is null or not an object. I understand this is because the array 'name' doesn't contain anything in this case, but in other cases first_0 does exist and json[0]['DATA']['name'] does return a value. Is there a way that I can check json[0]['DATA']['name'][0]['DATA']['first_0'] directly without having to do the following? if (json[0]['DATA']['name'] == '') { if (json[0]['DATA']['name'][0]['DATA']['first_0'] != 'undefined') { // OBJECT EXISTS } }

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• How do I stop track changes from turning on automatically in Word 2007

  - by Benj

  Whenever I open an existing document in Word 2007 (on Windows XP), word turns on track changes, and changes the display mode to "Final" (that is, not "Final Showing Markup" -- so I often don't even notice track changes is on if I don't remember to pay attention. This happens for ALL existing documents, and doesn't happen for new documents. I can't find any option in the configuration that would control this behavior. I would like to restore the original/default behavior where documents are opening with Track Changes off, and in "Final showing markup" display. Steps to Reproduce Open Word 2007. Create a new document. Verify that track changes is off. Save the document and close Word. Open the document (either directly or through Word). Track changes is now on. Any ideas?

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• How disable Apple iCal from popping up with every email invite/update?

  - by Sean

  My iCal has new behavior (since upgrading to SL). Every time I get an ical attachment in Mail, the iCal app flies up in my face. I don't see any way to turn off this behavior and it's amazingly disruptive when I'm busy with other activities. Help? EDIT: I want iCal to add the invitations, so when I cmd-tab to the app those items are in the queue awaiting approval. What I am hoping to learn is how to stop the popup action forcing the application to become the top-level window.

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