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• Retrieve Table Row Index of Current Row

  - by Jon

  Hi Everyone, I am trying to validate a text input when it loses focus. I would like to know which row of the table it is in. This is what I have so far and it keeps coming back as undefined. Any ideas? $("div#step-2 fieldset table tbody tr td input").blur(function() { var tableRow = $(this).parent().parent(); if ($.trim($(this).val()) == "") { $(this).addClass("invalid"); alert(tableRow.rowIndex); $(this).val(""); } else { $(this).removeClass("invalid"); checkTextChanges(); } });

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• How do i redirect to a GET request from a POST request on GAE

  - by user259349

  Hello everyone, i am writing an FBML app on facebook hosted in GAE. Facebook will talk to your hosted app only vai POST (im sure this is the cause, but please do correct me if i'm wrong). So im faced with the issue that inside of my POST method, i need to redirect to facebook OAuth authroize URL. But i can only send a GET request. How can i do that? At the moment i'm doing class OauthHandler(webapp.RequestHandler): def post(self): # blablablab request.redirect(oauth_uri) Which is wrong since the oauth_uri is only responding to GET. Further more, OAuth will redirect back to my redirect handler through GET, but i cant! i can only do post. So i'm confused. ideas? Thanks in advance

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• remove ViewController from memory

  - by user262325

  hello everyone I hope to load an ViewController and do something then unload it from memory. if (self.vViewController5.view.superview==nil) { ViewController5 *blueController = [[ViewController5 alloc] initWithNibName:@"View5" bundle:nil]; self.vViewController5 = blueController; [self.vViewController5 setDelegate:self]; [blueController release]; } [self presentModalViewController:vViewController5 animated:YES]; later, call [self dismissModalViewControllerAnimated:YES]; but I found that dismissModalViewControllerAnimated does not trigger the event viewDidUnload of Viewcontroller5. I try function release but it caused program collapse. I also try removeFromSuperView but it does not trigger the event ViewDidUnload neither. Welcome any comment Thanks interdev

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• Rails show latest entry

  - by Danny McClelland

  Hi Everyone, I have a working Rails application on version 2.3.5 - I am using many to many model relations and have got almost everything working. What I would like to do is on my new kase page show the most recent kase job ref at the top. So for example, if I created a new kase with a job ref of "001", if I then went to create a new kase it would show at the top "Your previous kases reference was 001". I have the field of jobref in the new kase form, so I am trying to workout what I need to do to output only the last jobref. If that makes sense! Thanks, Danny

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• How can I refactor this to use an inline function or template instead of a macro?

  - by BillyONeal

  Hello, everyone :) I have a useful macro here: #define PATH_PREFIX_RESOLVE(path, prefix, environment) \ if (boost::algorithm::istarts_with(path, prefix)) { \ ExpandEnvironmentStringsW(environment, buffer, MAX_PATH); \ path.replace(0, (sizeof(prefix)/sizeof(wchar_t)) - 1, buffer); \ if (Exists(path)) return path; \ } It's used about 6 times within the scope of a single function (that's it), but macros seem to have "bad karma" :P Anyway, the problem here is the sizeof(prefix) part of the macro. If I just replace this with a function taking a const wchar_t[], then the sizeof() will fail to deliver expected results. Simply adding a size member doesn't really solve the problem either. Making the user supply the size of the constant literal also results in a mess of duplicated constants at the call site. Any ideas on this one?

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• SetSel on EN_SETFOCUS or WM_SETFOCUS doesn't work

  - by Coder

  I've ran into next mystic thing in Winapi/MFC, I have an edit box, contents of which I have to select on Tab, Lclick, Rclick, Mclick and so on. The sort of obvious path is to handle the SETFOCUS message and call SetSel(0, -1), which should select all text. But it doesn't work! What's wrong? I tried googling, everyone seems to override Lclilks or handle SetSel in parent windows, but this is wrong from encapsulation point of view, also multiple clicks (user wants to insert something in the middle of the text) will break, and so on. Why isn't my approach working, I tried like 10 different ways, tried to trap all possible focus messages, looked up info on MSDN, but nothing works as expected. Also, I need to recreate the carret on focus, which also doesn't seem to work. SETFOCUS message gets trapped alright. If I add __asm int 3, it breaks every time. It's the create carret and setsel that gets swallowed it seems.

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• begin...end VS braces {...} VS indentation grouping

  - by Halst

  Hi, everyone. I don't want to fuel any holy-wars here, but I need to ask your opinion. Right now I'm in process of designing a Hardware Description Language as a project in my university. I decided to take VHDL language and just add some syntax-sugar 'coz VHDL is rather obese in syntax. I decided to use indentation to group blocks of code (like in Python), and I'm strongly criticized for that. Originally Begin...End; grouping is used in VHDL language. I have no clue what are cons and pros of these 3 types of grouping, the only thing I know is that I like Python style and I don't understand if it's usage could be erroneous or something? What do you think? What do you like? (hope that I can get some feedback from people who extensively used different languages with different code-grouping syntax, like Pasca, Ada, Delphi, C, C++, C#, Java, Python)

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• Find longest initial substring which renders in a limited width

  - by Lu Lu

  Hello everyone, I have a long string, ex: "Please help me to solve this problem." This string is so long to fit in a width of 100 pixels. I need to get a substring of this string and substring will fit in 100 pixels. Ex: substring "Please help me to sol" is fit in 100 pixels. Please help me how to estimate a substring like this. Thanks. My application is Win Forms and C#.

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• Rails: Polymorphic User Table a good idea with AuthLogic?

  - by sscirrus

  Hi everyone, I have a system where I need to login three user types: customers, companies, and vendors from one login form on the home page. I have created one User table that works according to AuthLogic's example app at http://github.com/binarylogic/authlogic_example. I have added a field called "User Type" that currently contains either 'Customer', 'Company', or 'Vendor'. Note: each user type contains many disparate fields so I'm not sure if Single Table Inheritance is the best way to go (would welcome corrections if this conclusion is invalid). Is this a polymorphic association where each of the three types is 'tagged' with a User record? How should my models look so I have the right relationships between my User table and my user types Customer, Company, Vendor? Thanks very much!

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• CSS : overflow : auto will not work under FireFox 3.6.2

  - by Michael Mao

  Hello everyone: This is a CSS related question, I got one good answer from my previous question, which suggested to use some CSS code like overflow:auto together with a fixed height container. And here is my actual implementation : on uni server Please follow the instructions on screen and buy more than 4 kinds of tickets. If you are using IE8, Opera, Safari, Chrome, you would notice that the lower right corner of the page now has a vertical scroll bar, which scrolls the content inside it and prevent it from overflowing. That's what I want to have in this section. Now the problem is, this would not do in FireFox 3.6.2. Am I doing something not compliant to the CSS standard or FireFox has its own way of overflow control? You can inspect the elements on screen, and all controlling functions are done in one javascript using jQuery. All CSS code are kept in a separated file as well. According to the professor, FireFox would be the target browser, although the version was set to 2.0...

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• Get a substring of a long string which fits in a width

  - by Lu Lu

  Hello everyone, I have a long string, ex: "Please help me to solve this problem." This string is so long to fit in a width of 100 pixels. I need to get a substring of this string and substring will fit in 100 pixels. Ex: substring "Please help me to sol" is fit in 100 pixels. Please help me how to estimate a substring like this. Thanks. My application is Win Forms and C#.

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• Web Crawling Sites with Javascripts or web forms

  - by Jojo

  Hello everyone, I have a webcrawler application. It successfully crawled most common and simple sites. Now i ran into some types of websites wherein HTML documents are dynamically generated through FORMS or javascripts. I believe they can be crawled and I just don't know how. Now, these websites do not show the actual HTML page. I mean if I browse that page in IE or firefox, the HTML code does not match what's actually in the IE or firefox. These sites contain textboxes, checkboxes, etc... so I believe they are what they call "Web Forms". Actually I am not much familiar with web development so correct me if I'm wrong. My question is, does anyone in similar situation as I am now and have successfully solved these types of "challenges"? Does anyone know of a certain book or article regarding web crawling? Those that pertains to these advanced type of websites? Thanks.

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• How to make an existing socket fail?

  - by Huckphin

  OK. So, this is exactly the opposite of what everyone asks about in network programming. Usually, people ask how to make a broken socket work. I, on the other hand am looking for the opposite. I currently have sockets working fine, and want them to break to re-create this problem we are seeing. I am not sure how to go about intentionally making the socket fail by having a bad read. The trick is this: The socket needs to be a working, established connection, and then it must fail for whatever reason. I'm writing this in C and the drivers are running on a Linux system. The sockets are handled by a non-IP Level 3 protocol in Linux by a Linux Device Driver. I have full access to all of the code-base, I just need to find a way to tease it out so that it can fail. Any ideas?

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• Good error flagging

  - by Wayne

  For everyone that was thinking of the error_reporting() function, then it isn't, what I need is whenever a MySQL query has been done, and the statement has like if($result) { echo "Yes, it was fine... bla bla"; } else { echo "Obviously, the echo'ing will show in a white page with the text ONLY..."; } Whenever statements have been true or false, I want the error to be appeared when redirected with the header() function and echo the error reporting in a div somewhere on the page. Basically something like this: $error = ''; This part appears inside the div tags <div><?php echo $error; ?></div> So the error part will be echoed when redirected with the header() if($result) { $error = "Yes, it was fine... bla bla"; header("Location: url"); } else { $error = "Something wrong happened..."; header("Location: url"); } But that just doesn't work :(

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• Calling a protected Windows executable with Perl

  - by Jake

  I'm trying to write a perl script that determines which users are currently logged into Windows by using query.exe (c:\Windows\system32\query.exe). Perl is unable to access this file, unable to execute it, even unable to see that it exists, as I've found with the following code: print `dir c:\\windows\\system32\\query*`; This produces the following output: 07/13/2009 05:16 PM 1,363,456 Query.dll 1 File(s) 1,363,456 bytes 0 Dir(s) 183,987,658,752 bytes free I've checked the user executing the script using perl's getlogin function, and it returns the name of a member of the local Administrators group (specifically, me). I've also tried adding read/execute permissions for "Everyone", but windows keeps giving me access denied errors when I try to modify this file's permissions. Finally, I've tried running perl.exe as an administrator but that doesn't fix the problem either. Is this something I can solve by changing some settings in Windows? Do I need to add something to my perl script? Or is there just no way to grant perl access to some of these processes?

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• Intersection of line with cube and knowing the point of intersection.

  - by Raj

  Hello everyone, description 1.lines are originating from origin(0,0,0). 2.lines are at some random angle to the Normal of Top face of teh cube. 3.if the lines are intersecting cube , calculate the intersection point. 4.mainly i wan to know how much distance ,line traveled inside the cube. I dont know exactly which approach should i take , i will be pleased and thankful if someone could guied me to the right direction, to use OpenGL, DirectX or some other library, for C# . some example or sample will be appriciated.

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• Are Inherited Forms And/Or Inherited Controls possible in Managed C++

  - by Ali Akdurak

  Hello everyone The question is actually pretty self explanatory but I will further clarify it. I am building a simple application to show a load [file] for 5 different types of [files]. So all these 5 forms will have similar GUI elements such as a listbox and a load button with a small textbox/label to show the summary of the [file]'s information. My desired effect is something like visual studio's C# template for Inherited User controls or Inherited forms. I already heavily googled the concept to look for a C++ visual studio template to the trick but I couldn't find it. The word [file] is in brackets because open file dialogue will not the trick as this list of files to select form comes form an SQL server. Thanks a lot!

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• "The breakpoint will not currently be hit. The source code is different from the original version."

  - by David

  Hi everyone I'm really hoping someone can help me out with this one. When debugging in Visual Studio, sometimes I add a breakpoint but it's hollow and VS says "The breakpoint will not currently be hit. The source code is different from the original version." Obviously this prevents me being able to debug. What on earth does the message mean? What original version? If I've just opened up the solution and not made any changes whatsoever to the code, how can there be an 'original version'? The appearance of this problem just seems totally arbitrary. It's just Visual Studio going 'Na na na na na, I'm not going to debug for you today'. Can anyone give any advice? Ta David

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• setting UAC settings of a file in C#

  - by Inam Jameel

  Hi guys. i want to give a file(already present on the client computer .exe) permissions to always execute with administrative permissions. please note that the file i wants to give permissions is already on target machine. and i want to change permissions of that file through another program written in c# and it has administrative permissions to do everything. kindly let me know how to do it i am using this code System.Security.AccessControl.FileSecurity fs = File.GetAccessControl(@"c:\inam.exe"); FileSystemAccessRule fsar = new FileSystemAccessRule("Everyone", FileSystemRights.FullControl, AccessControlType.Allow); fs.AddAccessRule(fsar); File.SetAccessControl(@"c:\inam.exe", fs); this code will change the permissions correctly but still when i execute inam.exe after executing this code the UAC not appeared and also the inam.exe cant perform administrative operations. actually i have already deployed an application on more than 10,000 clients so wants to release a patch to resolve the administrative rights issue.

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• Logging which is the best way

  - by Tony

  Hi People who talk about loggers here never talke about EventLog, I think this is good for windows system. Is it reliable, or I found it dead in some bad morning? Why not logging everything at SQLServer, I am creating E-Commerce website, if SQL server down the website will be down anyway. but I am worry about temporally connection failure, what do u think? Why everyone like files, it can be in great size, too big to handle, or maybe I will create another file when a file is too big, and I can create a file with a date. Some one tried MS Enterprise library? talk to me about it. Thanks

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• Reporting Services SQL Server 2005 File Share Error

  - by NicholasM

  Hi, I have a problem with Reporting Services, on an XP box, trying to save subscription reports onto a Windows 7 box over the network. No matter the permissions or accounts used by reporting services it always comes back with "A logon error occurred when attempting to access the file share. The user account or password is not valid." Since this is saving reports over the network and both admin accounts and open network/file permissions to everyone were both tried so I'm left wondering if this is an issue with Reporting Services 2005 has troubles with Windows 7 over the network. Any help would be appreciated, Thanks.

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• ruby on rails params injection

  - by Julien P.

  Hello everyone, I have a question about ruby on rails and the process of assigning variables using the params variable passed through a form class User attr_accessible :available_to_admins, :name end Let's say that I have a field that is only available to my admins. Assuming that you are not an admin, I am going to not display the available_to_admins input in your form. After that, when I want to save your data I'll just do a: User.update_attributes(params[:user]) If you are an admin, then no problem, the params[:user] is going to contain name and available_tu_admins and if you're not then only your name. Since the available_to_admins is an attr_accessible parameter, how should I prevent non admin users from being able to inject a variable containing the available_to_admins input with their new value?

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• Bookmarklet to perform multiple tasks

  - by Emil Hajric

  Hi everyone. I've been tinkering around this application all day long and have had a few difficulties. So basically the bookmarklet needs to allow the user to use a lot of functions from multiple JavaScript files, although all of the functions that the user will use are called from one file. Basically it includes all of the necessary files in order to perform a certain function. It uses jQuery, and I've found that it's really hard to have jQuery running on your bookmarklet. My question is: How can I load multiple javascript code files into your Bookmarklet? Yours truly, Emil Hajric.

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• Java - Google App Engine - InvalidClassException when I change a class that was stored in session sc

  - by Spines

  I updated my User class, and now whenever someone that had the old version of the User class stored in their session scope accesses my site, I get an InvalidClassException. javax.servlet.ServletException: java.lang.RuntimeException: java.io.InvalidClassException: User; local class incompatible: stream classdesc serialVersionUID = 4949038118012519093, local class serialVersionUID = -971500502189813151 How do I stop this error from happening for those users? I could probably invalidate everyone's sessions every time I want to update a class that gets stored in session scope, but is there a better way, so that my user's don't have to login again?

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• Use SendMessage in C# to perform a CTRL-C operation on a given handle

  - by gtaborga

  Hello everyone, I'm trying to perform a (CTRL-C) copy on a window. I've already managed to do this using SendInput but unfortunately that could fail if the window doesn't have focus. I'm trying to perform the same (CTRL-C) operation using SendMessage in C#. So far I haven't been successful in getting the WPARAM and LPARAM combination for this to work. I have also tried using SendMessage with the WM_COPY message but that didn't work for my needs. Please if anyone has done this before successfully using SendMessage I would greatly appreciate your help.

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