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Articles indexed Friday March 26 2010

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  • Are binary protocols dead?

    - by Earlz
    It seemed like there use to be way more binary protocols because of the very slow internet speeds of the time (dialup). I've been seeing everything being replaced by HTTP and SOAP/REST/XML. Why is this? Are binary protocols really dead or are they just less popular? Why would they be dead or less popular?

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  • How can I find file system concurrency issues ?

    - by krosenvold
    I have an application running on Linux, and I find myself wanting windows (!). The problem is that every 1000 times or so I run into concurrency problems that are consistent with concurrent reading/writing of files. I am fairly sure that this behavior would be prohibited by file locking under Windows, but I don't have any sufficiently fast windows box to check. There is simply too much file access (too much data) to expect strace to work reliably - the sheer volume of output is likely to change the problem too. It also happens on different files every time. Ideally I would like to change/reconfigure the linux file system to be more restrictive (as in fail-fast) wrt concurrent access. Are there any tools/settings I can use to achieve this ?

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  • How to join a table in symfony (Propel) and retrieve object from both table with one query

    - by Jean-Philippe
    Hi, I'm trying to get an easy way to fetch data from two joined Mysql table using Propel (inside Symfony) but in one query. Let's say I do this simple thing: $comment = CommentPeer::RetrieveByPk(1); print $comment->getArticle()->getTitle(); //Assuming the Article table is joined to the Comment table Symfony will call 2 queries to get that done. The first one to get the Comment row and the next one to get the Article row linked to the comment one. Now, I am trying to find a way to make all that within one query. I've tried to join them using $c = new Criteria(); $c->addJoin(CommentPeer::ARTICLE_ID, ArticlePeer::ID); $c->add(CommentPeer::ID, 1); $comment = CommentPeer::doSelectOne($c); But when I try to get the Article object using $comment->getArticle() It will still issue the query to get the Article row. I could easily clear all the selected columns and select the columns I need but that would not give me the Propel object I'd like, just an array of the query's raw result. So how can I get a populated propel object of two (or more) joined table with only one query? Thanks, JP

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  • CADisplayLink stops updating when UIScrollView scrolled

    - by Tricky
    Title is quite self explanatory, but I have some animation being done in a loop triggered by CADisplayLink. However, as soon as I scroll a UIScrollView I have added to my view hierarchy, the animation stops immediately, only to return again when scrolling has completely stopped and come to a standstill.... Anyway to cancel this behaviour?

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  • Alert Box Running First?

    - by corymathews
    I have some jQuery/JS below. The first thing to run is the alert box at the end. $(document).ready(function() { $("#id1 img , .msg").stop().animate( { width: '300px', height: '300px'}, { duration: 'slow', easing: 'easeInSine' }).pause(3000); $(".msg").animate( { width: '50px', height: '50px' }, { duration: 498, easing: 'easeOutSine' }); $("#id1 img").animate( { width: '50px', height: '50px' }, { duration: 500, easing: 'easeOutSine' }); $("#id1 img , .msg").animate( { width: '300px',height: '300px'}, { duration: 'slow', easing: 'easeInSine' }).pause(3000); alert('eh?'); }); I do have a easing plugin. If I run this the alert will show, and then the first animate will happen in the background but not be shown. It will just appear at the final size. Shouldn't the alert run at the end of all the animation? Can anyone explain why this is happening?

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  • jQuery width() returns 0 for a span element created on the fly?

    - by Lyon
    Hi, I'm trying to determine the width of a string. I'm using the following code but it always return 0. It seems to be that as the span element is created and not already present in the page body, jQuery width() returns 0. Is there a way such that I can get the width of the text without resorting to creating dummy html code in the page? Thanks :) $('<span>test</span>').width(); // width = 0 $('span.width').width(); // returns a width value <body><span class="width">test</span></body>

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  • GQL select by UserProperty

    - by fmsf
    Hey I have this code but it doesn't work because it is expecting a string. How can I make it work? class Atable(BaseModel): owner = db.UserProperty() (...) --------- // -------------- query = "SELECT * FROM Atable WHERE owner=", users.get_current_user() results = db.GqlQuery(query) How can I fix that search? Thanks :) I've started with the appengine database yesterday so be gentle :)

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  • Should programmers do Pro Bono work? where are the code public defenders?

    - by Tj Kellie
    How many projects are people doing based on the Bro Bono publico ideals versus working for the highest wage or potential for a cash-in-buy-out payday? For years lawyers have been called out for excessive gathering of wealth from high bill rates and huge settlement deals, hiring out their knowledge and skills to the highest bidders. People call for them to do more for free, use the laws and their time to defend or further some cause thats in the public's best interest. Is professional software development that different? So many bright people and so much knowledge of complex systems. Do you think that there is enough of a "Pro Bono" movement to solve the social and public problems in the industry right now? If so what are the examples to point to? OLPC? NOTE: Saying that open source software is the same as pro bono misses the point completely. I was looking for specific projects with a social context, not just group-sourcing for free software. Just because your not making anyone pay for your software does not mean its doing anyone any good. I'm not calling out manual enforcement of pro bono work for programmers, really just want some objective opinions and concrete examples of social-minded software/tech development projects like the One Laptop Per Child project. I'm sure open source would be a natural tie-in for some.

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  • What is the best practice for writing bookmarklets

    - by Ritesh M Nayak
    I am writing some bookmarklets for a project that I am currently working on and I was wondering what the best practice for writing a bookmarklet was. I did some looking around and this is what I came up with javascript:void((function() { var%20e=document.createElement('script'); e.setAttribute('type','text/javascript'); e.setAttribute('src','http://someserver.com/bookmarkletcode.js'); document.body.appendChild(e) })()) I felt this is nice because the code can always be changed (since its requested every time) and still it acts like a bookmarklet. Are there are any problems to this approach ? Browser incompatibility etc? What is the best practice for this?

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  • Setting a session variable in Global.asax causes AJAX errors

    - by Fly_Trap
    I'm getting a very peculiar problem with my asp.net application, it took me an age to track down but I still don't know what is causing this behaviour. If I set a session variable in the Application_PreRequestHandlerExecute event, then my external JavaScript files are ignored, and therfore causing a raft of errors. I have simplified the problem below. E.g. I have file called JScript.js containing the code: function myAlert() { alert("Hi World"); } And in my Default.aspx file I reference the js with the code: <script src="JScript.js" type="text/javascript"></script> And in the body onload event I call the myAlert() function: <body onload="myAlert()"> And finally in the Global.asax file: Private Sub Application_PreRequestHandlerExecute(ByVal sender As Object, ByVal e As EventArgs) HttpContext.Current.Session("myVar") = "MyValue" End Sub If you run the Default.aspx file you will see the js function isnt called, however, if you comment out the line of code Global.asax then the external js is called and the function executed when the page loads. Why is this?

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  • diskspace in ubuntu

    - by Omkant
    I have installed windows and ubuntu side by side .and given the diskspace of 10GB in an another drive partition.after using two moths i have installed some software to it no it's not starting and writing on the screen that there is no diskspace so could not be started . what can i do now?but at starting time only balckscreen terminal is shown with $ sign . please give me some command to uninstall some program and start using ubuntu or any other way to get rid of it

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  • links for 2010-03-26

    - by Bob Rhubart
    @rluttikhuizen: Logging messages in Oracle SOA Suite 11g using OWSM Oracle ACE Ronald van Luttikhuizen answers questions about logging, inspecting, and analyzing the contents of SOAP request and response messages in Oracle SOA Suite 11g. (tags: oracle otn soa soap soasuite)

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  • Run javascript function after Server-Side validation is complete.

    - by Ed Woodcock
    Ok, I've got a lightbox with a small form (2 fields) in it, inside an UpdatePanel, and I want to close this lightbox (must be done via javascript) when the 'Save' button is pressed. However, there is a need to have a server-side CustomValidator on the page, and I only want to close the lightbox if this returns as valid. Does anyone know a way to trigger javascript (or jQuery) code from a server-side validator?

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  • I can't generate migrations - "illegal route the controller must be specified" - where am I going wr

    - by ro
    Background: i'm using InstantRails 2.0 I'm wanted to add a new column to an existing table using the following syntax: ruby script/generate migration add_fieldname_to_tablename fieldname:string So I tried ruby script/generate migration add_invites_to_user invites:integer ruby script/generate migration add_invites_to_users invites:integer And to test it further ruby script/generate migration AddInvites ruby script/generate migration AddInvites invites:integer All of the above give me builder.rb:175 in 'build': Illegal route: the :controller must be specified! (ArgumentError)

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  • Why "menus" unit is finalized too early?

    - by Harriv
    I tested my application with FastMM and FullDebugMode turned on, since I had some shutdown problems. After solving bunch of my own problems FastMM started to complain about calling virtual method on a freed object in TPopupList. I tried to move the menus unit as early as possible in uses so that it would be finalized last, but it didn't help. Is this real problem, a bug in vcl or false alarm from FastMM? Here's the full report from FastMM: FastMM has detected an attempt to call a virtual method on a freed object. An access violation will now be raised in order to abort the current operation. Freed object class: TPopupList Virtual method: Offset +16 Virtual method address: 4714E4 The allocation number was: 220 The object was allocated by thread 0x1CC0, and the stack trace (return addresses) at the time was: 403216 [sys\system.pas][System][System.@GetMem][2654] 404A4F [sys\system.pas][System][System.TObject.NewInstance][8807] 404E16 [sys\system.pas][System][System.@ClassCreate][9472] 404A84 [sys\system.pas][System][System.TObject.Create][8822] 7F2602 [Menus.pas][Menus][Menus.Menus][4223] 40570F [sys\system.pas][System][System.InitUnits][11397] 405777 [sys\system.pas][System][System.@StartExe][11462] 40844F [SysInit.pas][SysInit][SysInit.@InitExe][663] 7F6368 [PCCSServer.dpr][PCCSServer][PCCSServer.PCCSServer][148] 7C90DCBA [ZwSetInformationThread] 7C817077 [Unknown function at RegisterWaitForInputIdle] The object was subsequently freed by thread 0x1CC0, and the stack trace (return addresses) at the time was: 403232 [sys\system.pas][System][System.@FreeMem][2699] 404A6D [sys\system.pas][System][System.TObject.FreeInstance][8813] 404E61 [sys\system.pas][System][System.@ClassDestroy][9513] 428D15 [common\Classes.pas][Classes][Classes.TList.Destroy][2914] 404AB3 [sys\system.pas][System][System.TObject.Free][8832] 472091 [Menus.pas][Menus][Menus.Finalization][4228] 4056A7 [sys\system.pas][System][System.FinalizeUnits][11256] 4056BF [sys\system.pas][System][System.FinalizeUnits][11261] 7C9032A8 [RtlConvertUlongToLargeInteger] 7C90327A [RtlConvertUlongToLargeInteger] 7C92AA0F [Unknown function at towlower] The current thread ID is 0x1CC0, and the stack trace (return addresses) leading to this error is: 4714B8 [Menus.pas][Menus][Menus.TPopupList.MainWndProc][3779] 435BB2 [common\Classes.pas][Classes][Classes.StdWndProc][11583] 7E418734 [Unknown function at GetDC] 7E418816 [Unknown function at GetDC] 7E428EA0 [Unknown function at DefWindowProcW] 7E428EEC [Unknown function at DefWindowProcW] 7C90E473 [KiUserCallbackDispatcher] 7E42B1A8 [DestroyWindow] 47CE31 [Controls.pas][Controls][Controls.TWinControl.DestroyWindowHandle][6857] 493BE4 [Forms.pas][Forms][Forms.TCustomForm.DestroyWindowHandle][4564] 4906D9 [Forms.pas][Forms][Forms.TCustomForm.Destroy][2929] Current memory dump of 256 bytes starting at pointer address 7FF9CFF0: 2C FE 82 00 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 C4 A3 2D 0C 00 00 00 00 B1 D0 F9 7F 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 C0 00 00 00 16 32 40 00 9D 5B 40 00 C8 5B 40 00 CE 82 40 00 3C 40 91 7C B0 B1 94 7C 0A 77 92 7C 84 77 92 7C 7C F0 96 7C 94 B3 94 7C 84 77 92 7C C0 1C 00 00 32 32 40 00 12 5B 40 00 EF 69 40 00 BA 20 47 00 A7 56 40 00 BF 56 40 00 A8 32 90 7C 7A 32 90 7C 0F AA 92 7C 0A 77 92 7C 84 77 92 7C C0 1C 00 00 0E 00 00 00 00 00 00 00 C7 35 65 59 2C FE 82 00 80 80 80 80 80 80 80 80 80 80 38 CA 9A A6 80 80 80 80 80 80 00 00 00 00 51 D1 F9 7F 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 C1 00 00 00 16 32 40 00 9D 5B 40 00 C8 5B 40 00 CE 82 40 00 3C 40 91 7C B0 B1 94 7C 0A 77 92 7C 84 77 92 7C 7C F0 96 7C 94 B3 94 7C 84 77 92 7C , þ ‚ . € € € € € € € € € € € € € € € € Ä £ - . . . . . ± Ð ù . . . . . . . . . . . . . . . . À . . . . 2 @ . [ @ . È [ @ . Î ‚ @ . < @ ‘ | ° ± ” | . w ’ | „ w ’ | | ð – | ” ³ ” | „ w ’ | À . . . 2 2 @ . . [ @ . ï i @ . º G . § V @ . ¿ V @ . ¨ 2 | z 2 | . ª ’ | . w ’ | „ w ’ | À . . . . . . . . . . . Ç 5 e Y , þ ‚ . € € € € € € € € € € 8 Ê š ¦ € € € € € € . . . . Q Ñ ù . . . . . . . . . . . . . . . . Á . . . . 2 @ . [ @ . È [ @ . Î ‚ @ . < @ ‘ | ° ± ” | . w ’ | „ w ’ | | ð – | ” ³ ” | „ w ’ | I'm using Delphi 2007 and FastMM 4.97.

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  • tools for quick php development

    - by YsoL8
    I'm a PHP developer looking to speed up my production time, and add a new ability to my CV. I'm after a package that provides the basic CMS features that I can build on for a wide range of purposes. I've heard of PHPcake, Drupal ect but I don't know enough about these to make an informed decision. What alternatives are there? Are they OO, MVC, producedual? If you could point me to some comparisons or give your option of which actually work.

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  • VB FFT - stuck understanding relationship of results to frequency

    - by WaveyDavey
    Trying to understand an fft (Fast Fourier Transform) routine I'm using (stealing)(recycling) Input is an array of 512 data points which are a sample waveform. Test data is generated into this array. fft transforms this array into frequency domain. Trying to understand relationship between freq, period, sample rate and position in fft array. I'll illustrate with examples: ======================================== Sample rate is 1000 samples/s. Generate a set of samples at 10Hz. Input array has peak values at arr(28), arr(128), arr(228) ... period = 100 sample points peak value in fft array is at index 6 (excluding a huge value at 0) ======================================== Sample rate is 8000 samples/s Generate set of samples at 440Hz Input array peak values include arr(7), arr(25), arr(43), arr(61) ... period = 18 sample points peak value in fft array is at index 29 (excluding a huge value at 0) ======================================== How do I relate the index of the peak in the fft array to frequency ?

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  • Java Folder Location for Image NetBeans 6.8

    - by ikurtz
    greetings, today i have started to learn java using netbeans ide. i would like my jframe to display an icon as stated in the following: setIconImage(Toolkit.getDefaultToolkit().getImage("SartreIcon.jpg")); the questin is under netbeans ide.. exactly in which folder do i place the graphic in question in order to load it? thanks.

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  • Import and render the contents of a XAML file inline in another XAML file?

    - by spoon16
    I have a XAML file that I exported from Expression Design. I would like to render that XAML content inline in one of my user controls. Can I reference the external XAML file that I want to include as a Resource on the UserControl I want to render it in? Or is there some other markup that I can use to identify the XAML object in my project that I want rendered in the current location? I am using Silverlight 4.

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