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• scrollTop issue on constant moving div

  - by joe

  I have a FLASH object that I mouse over which in turn calls the following function to scroll a div. It works but due to the constant high speed scrolling it would throw up NULLS. This in turn caused IE to open a new page through my FLASH ActionScript 2.0 I found that by creating the SC variable and throwing in the condition "if it exists" keeps FLASH from causing IE to open a new page. However, it still creates an error behind the scenes of "Object Required". Although my application works I do not want load up memory with errors. Any thoughts? var SC; function pP(PT){ SC=document.getElementById('P'+PT).offsetTop; if(SC){document.getElementById('CBOX').scrollTop=SC;} }

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• g++ library search failure

  - by Frederick

  I have a directory structure as below: / | +--- /lib | libsomething.a | libsomething.so | +----/obj anObjFile.o When I run the following command from within the obj directory: g++ -L../lib -lsomething anObjFile.o I get undefined reference errors. Apparently gcc is failing to locate libsomething.a. But now if I delete libsomething.so and then rerun the command, linking succeeds. As per gcc documentation -lsomething should expand to libsomething.a. Then why is presence of libsomething.so causing the library search to fail? Also, how can I resolve this problem? I'm on Linux Mint 12 with gcc version 4.6.1.

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• C++ array of classes

  - by nickik

  I working on a game but I have a problem with the initialization of the level. (feld is just field in german) class level{ private: feld spielfeld[10][10]; public: /* other staff */ void init_feld(); }; void level::init_feld() { for(int i=0;i!=10;i++){ for(int n=0;n!=10;n++){ spielfeld[i][n] = new feld(land, i, n); } } } The Error: Error: no match for »operator=« in »((level*)this)-level::spielfeld[i][n] = (operator new(24u), (, ((feld*))))« /home/nick/stratego/feld.h:18:11: Remark: candidate is: feld& feld::operator=(const feld&) Process terminated with status 1 (0 minutes, 0 seconds) 2 errors, 0 warnings

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• Internet Explorer 8 doesn't finish downloading the page!

  - by Eric the Red

  I'm currently finishing up testing a new Ruby on Rails app. Just recently, some of the pages do not seem to finish downloading in IE8. In FireFox, Chrome and Safari, everything works perfectly. The pages all validate successfully using the W3C validator. When I view the page source in IE8, the page has been chopped off around 75% of the size it should be. IE8 claims the page is finished loading, and doesn't give any errors, but of course the page isn't rendering properly. Has anyone seen this before? I'd really appreciate any help.

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• Are there any alternative to the header(); function ?

  - by Simon

  The thing is, I have a log-in page. And, when user enters Username & Password, they must be re-directed to success/failure page. Now, I have placed a "header('location:welcome.php');" after mysql rows are returned. But, it is giving me Header already sent errors, and I don't know much about PHP to do anything about it, let alone understand why it is happening. So, how to you transfer a user to another page after log-in data is verified? Same problem is happening with register, post, comment and search functions in my site.

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• Applescript - Get status of windows ( Visible or in the dock )

  - by user1329172

  I need some help for my appleScript. For all open windows, I want to know which one is hidden (in the dock), which one is visible and which one is focused? To list windows I use : tell application "System Events" set procs to processes set windowName to {} repeat with proc in procs try if exists (window 1 of proc) then repeat with w in windows of proc copy w's name to the end of windowName end repeat end if end try -- ignore errors end repeat end tell return windowName I tried focused property: copy w's focused to the end of windowName and selected property: copy w's selected to the end of windowName But this doesn't work! Thanks for help!

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• Does 'throw' or 'try...catch' hinder performance?

  - by Richard

  I've been reading all over the place (including here) about when exception should / shouldn't be used. I now want to change my code that would throw to make the method return false and handle it like that, but my question is: Is it the throwing or try..catch-ing that can hinder performance...? What I mean is, would this be acceptable: bool method someMmethod() { try { // ...Do something catch (Exception ex) // Don't care too much what at the moment... { // Output error // Return false } return true // No errors Or would there be a better way to do it? (I'm bloody sick of seeing "Unhandled exception..." LOL!)

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• Datepicker (1.8rc3) not transferring date in IE6

  - by brianjcohen

  Using jquery-1.4.2 and jquery-UI 1.8rc3, I instantiated a datepicker on a text input with showOn: 'focus'. The datepicker appears correctly. However when I click on a date, the datepicker doesn't disappear and the dateStr doesn't get transferred to the text input. I tried adding an onClose: handler that calls alert(dateStr). The event fires but no dateStr has been set. Everything works fine in Firefox. I have Microsoft Script Debugger installed but no script errors were detected. I did report this as a potential problem at the jQuery UI forums but my message has been sitting there awaiting moderation for hours and I figured someone here might have a suggestion. $().ready(function() { $(".date").datepicker({ showOn: 'focus', onClose: function(dateText) { alert(dateText); } }); });

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• Why does var evaluate to System.Object in "foreach (var row in table.Rows)"?

  - by DanM

  When I enter this foreach statement... foreach (var row in table.Rows) ...the tooltip for var says class System.Object I'm confused why it's not class System.Data.DataRow. (In case you're wondering, yes, I have using System.Data at the top of my code file.) If I declare the type explicitly, as in... foreach (DataRow row in table.Rows) ...it works fine with no errors. Also if I do... var numbers = new int[] { 1, 2, 3 }; foreach (var number in numbers) ...var evaluates to struct System.Int32. So, the problem is not that var doesn't work in a foreach clause. So, there's something strange about DataRowCollection where the items don't automatically evaluate to DataRow. But I can't figure out what it is. Does anyone have an explanation?

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• C#: Resource file refactoring

  - by Svish

  Does anyone know of a good tool for refactoring resources in a visual studio 2008 solution? We have a number of resource files with translated text in an assembly used for localizing our application. But they have gotten a bit messy... I would like to rename some of the keys, and move some of them into other resource files. And I would like those changes be done in my code, and the translated versions of the resource files as well. Maybe a some analysis on what strings are missing in the translated versions, and what strings have been removed from the original as well... Does anyone know of a good visual studio extension or ReSharper plugin that can help me with this? Right now it is kind of a pain, because I have to first rename the key in the base resource file, then in the localized versions. And then compile to get all the compile errors resulting from the key which now have a different name, and then go through and fix them all... very annoying =/

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• EF Linq Product Sum when no records returned

  - by user1622713

  I’ve seen variations of this question all over the place but none of the answers work for me. Most of them are just trying to sum a single column too – nothing more complex such as the sum of a product as below: public double Total { get { return _Context.Sales.Where(t => t.Quantity > 0) .DefaultIfEmpty() .Sum(t => t.Quantity * t.Price); } } If no rows are returned I want to return zero. However if no rows are returned the .Sum() fails. There are various options of trying to insert Convert.ToDouble and using null coalesce operators, but they all still gave me errors. I’m sure I am missing a simple way to do this – any help greatly appreciated after too long banging head against google brick wall!

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• Subversion repo upgrade makes repository unusable.

  - by Mike C.

  Hi, I recently upgraded my subversion server from 1.4.6 to 1.6.11. The repos all seem to work correctly after this. I then try to upgrade a repo by issuing the svnadmin update command, and it produces no errors and says the update is complete. However, I am unable to open the repository after this. I get the following error when trying to open the repo: Could not open the requested SVN filesystem. I am using Apache, not SVNServe. Any help would be appreciated!

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• Eclipse C++ on WinXP - Type `::iterator' has not been declared

  - by redwolfe

  I'm new to C++/Eclipse. I'm trying to get it working to get a new perspective on a problem with a program I wrote in DevCPP. The program is simple and builds fine in DevCPP. In Eclipse, I get hundreds of errors like the one above. I assume the compiler can't see my include files. I've checked that the project settings - GCC C++ compiler - directories contains the location for my include files (D:\MinGW\include\c++\3.4.5). I've prowled around and tried to change 'Discovery Options' to 'GCC C++ Compiler' from 'GCC C Compiler' but it keeps changing back. I guess this is not the problem. Any help would be very welcome. I'm on a tight deadline with many interruptions and this is cracking me up.

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• How do I go about getting the Ajax Queue plugin working in jQuery 1.3?

  - by jonyamo

  I have an app that sends multiple Ajax requests simultaneously. I was originally running into race conditions until I discovered the jQuery Ajax Queue plugin, which works great with jQuery 1.2, but fails with jQuery 1.3. There are actually two different versions of the plugin; I am currently using this one which is the same as the first but just adds a bit more functionality. Anyway, I am using Firebug on Firefox 3.0.10 and when I run my code I don't receive any explicit errors, the call is just never returned. I could obviously continue using v1.2 but would really like to learn why this plugin fails with the latest release and what I can do to get it working. Thanks in advance.

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• xcode 4 creating a 2d grid (range and domain)

  - by user1706978

  I'm learning how to program c and i'm trying to make a program the finds the range (using an equation with x as the domain) of a 2d grid...ive already attempted it, but it's giving me all these errors on Xcode, any help?(As you can see, I'm quite stuck!) #include <stdio.h> #include <stdlib.h> float domain; float domain = 2.0; float domainsol(float x ) { domain = x; float func = 1.25 * x + 5.0; return func; } int main(int argc, const char * argv[]) { }

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• (Rails) How do I reference resources from non-restful views...?

  - by humble_coder

  Hi All, How do you ensure that your javascript includes get included properly for all files everywhere using a particular layout? Basically I have some non-restful actions that I've added. I haven't added any ROUTES for them, however, using normal text rendering works fine. It's when I start requiring different "swf" and "js" files (files which are properly placed in PUBLIC) that things get hairy. I start receiving "406 Not Acceptable" errors telling me that it's looking for the files in a subdirectory of the current controller. As it stands I'm in including the JS in "application" layout file. It works for the INDEX action, but doesn't seem to work for any of the non-restful actions. Thoughts?

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• Error including errno.h

  - by TechWiz

  Every time I try to compile a project that includes errno.h in linux, I get issues using the error codes. GCC spits out errors saying the error codes aren't declared and I get the same issue with 3rd party projects that are, of course, known to compile. I have the Linux headers for my kernel installed. Any suggestions as to what else it could be? edit: Snippet at error code: if ((res != 0) && (errno == EEXIST)) Snippet of includes: ... #include <dirent.h> #include <errno.h> #include <stdarg.h> ... as is with no ifdef edit: Well I'm convinced my system's Linux headers are hosed somehow... that, or I'm missing some environment vars.

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• You have an error in your SQL syntax; check the manual that corresponds to your MySQL

  - by LuisEValencia

  I am trying to run a mysql query to find all occurences of a text. I have a syntax error but dont know where or how to fix it I am using sqlyog to execute this script DECLARE @url VARCHAR(255) SET @url = '1720' SELECT 'select * from ' + RTRIM(tbl.name) + ' where ' + RTRIM(col.name) + ' like %' + RTRIM(@url) + '%' FROM sysobjects tbl INNER JOIN syscolumns col ON tbl.id = col.id AND col.xtype IN (167, 175, 231, 239) -- (n)char and (n)varchar, there may be others to include AND col.length > 30 -- arbitrary min length into which you might store a URL WHERE tbl.type = 'U' -- user defined table 1 queries executed, 0 success, 1 errors, 0 warnings Query: declare @url varchar(255) set @url = '1720' select 'select * from ' + rtrim(tbl.name) + ' where ' + rtrim(col.name) + ' like %' ... Error Code: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'declare @url varchar(255)

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• Strings in ASP?

  - by TSL

  Hi All, I have some APSX code that I am trying to modify for a programmer that is out on medicaly leave. I am not an ASP guy, but rather C++ So what I want to do is delare a string, check the first 4 characters and if it is 'http' do something, if not, something else. Here is what I have: string strYT= Left(objFile, 4); if (strYT=="http") { pnlYT.Visible = true; pnlIntro.Visible = false; pnlVideo.Visible = false; } else { pnlYT.Visible = false; pnlIntro.Visible = false; pnlVideo.Visible = true; PrintText(objFile); } But I get errors like: Compiler Error Message: CS0103: The name 'Left' does not exist in the class or namespace 'ASP.zen_aspx' My googling turns up many examples of doing it just like this.....

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• C# method contents validation

  - by user258651

  I need to validate the contents of a C# method. I do not care about syntax errors that do not affect the method's scope. I do care about characters that will invalidate parsing of the rest of the code. For example: method() { /* valid comment */ /* <-- bad for (i..) { } for (i..) { <-- bad } I need to validate/fix any non-paired characters. This includeds /* */, { }, and maybe others. How should I go about this? My first thought was Regex, but that clearly isn't going to get the job done.

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• Use of 'standalone parentheses'

  - by zaf

  I just answered a question where I advised removing parentheses around a statement and was asked why, to which I had no answer when I realised that it caused no errors/warnings. I could only cite bad practice. But maybe I'm the one missing something... I did my own tests: (print('!')); // Outputs '!' ((print('!!'))); // Outputs '!!' (1); // No output (qwerty); // No output (1==2); // No output (1=2); // Syntax error // etc... Can someone shed some light on whats going on and of what use are 'standalone parentheses'?

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• JavaScript: filter() for Objects

  - by AgileMeansDoAsLittleAsPossible

  ECMAScript 5 has the filter() prototype for Array types, but not Object types, if I understand correctly. How would I implement a filter() for Objects in JavaScript? Let's say I have this object: var foo = { bar: "Yes" }; And I want to write a filter() that works on Objects: Object.prototype.filter = function(predicate) { var result = {}; for (key in this) { if (this.hasOwnProperty(key) && !predicate(this[key])) { result[key] = this[key]; } } return result; }; This works when I use it in jsfiddle (http://jsfiddle.net/MPUnL/4/), but when I add it to my site that uses jQuery 1.5 and jQuery UI 1.8.9, I get JavaScript errors in FireBug.

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• how to create 2 controllers with same actionresult 2 views but one implementation

  - by amalatsliit

  I got a controller in my mvc application like below. public class BaseController: Controller { protected void LogInfo() { logger.InfoFormat("[SessionID: {0}, RemoteIP: {1}]", Session.SessionID, Request.UserHostAddress); } } public class FirstController : BaseController { public ActionResult Index(string name) { LogInfo(); getQueryString(); if(IsValidRec()) { if(Errors())) { return View("Error"); } var viewname = getViewName(name); return view(viewname); } else return view("NotFound"); } } I need to create another controller(SecondController ) with same ActionResult method that FirstController has but without any implementation. Because I dont wont to repeat same code in 2 ActionResult methods. what is the best way to do that. I tried in following way but I m getting error when I initialize my protected method 'LogInfo()' public class SecondController : BaseController { public ActionResult Index(string name) { var firstcontroller = new FirstController(); return firstcontroller.Index(name); } }

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• including a std::map within a struct? Is it ok?

  - by user553514

  class X_class{ public: struct extra {int extra1; int extra2; int extra3; }; enum a { n,m}; struct x_struct{ char b; char c; int d; int e; std::map <int, extra> myExtraMap; }; }; in my code I define : x_struct myStruct; why do I get compile errors compiling the above class? The error either says: 1) expected ; before < on the line --- where I defined the map (above) if I eliminate std:: or 2) error: invalid use of ::; error: expected ; before < token

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• mysql_close(): supplied argument is not a valid MySQL-Link resource

  - by maxedison

  I'm trying to get the hang of using custom session handlers to store session data in a MySQL database. However, I keep getting the following warning: mysql_close(): supplied argument is not a valid MySQL-Link resource Here's the code I'm using, which I got from here: function _open(){ global $_sess_db; $_sess_db = mysql_connect("localhost", "root", "******"); if ($_sess_db) { return mysql_select_db('style', $_sess_db); } return false; } function _close(){ global $_sess_db; return mysql_close($_sess_db); //error happens here } The full text of the error message ultimately points to the final "return mysql_close($_sess_db);" line. I can confirm that the mysql_connect info does in fact work, and I do have the rest of the session handler functions defined as well. And in case it helps, I get these errors immediately upon page load, without actually calling any of the session handler functions, and without having any current sessions open.

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