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Articles indexed Tuesday April 6 2010

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• Visual Studio 2008 compiles anything in C++ file?

  - by Brad Pepers

  I noticed today that a source code file in a project was compiling even though it had junk at the top of it. It got me wondering what all would pass without error through the compiler. Here is an example of code that will not generate any error messages: what kind of weird behaviour is this??? #include "stdafx.h" // what is up? int foo(int bar) { bla bla bla????? return bar; } and more junk??? What in the world is the compiler doing to allow this code to compile without giving any error messages? I'm using Visual Studio 2008 and this is unmanaged C++ code. The foo function isn't actually generated in the object file so it can't be used but why no errors???

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• IE 8 and jquery problem

  - by Hellnar

  I have such div: <div class="box"> <div id="myid" style="display:hidden;"> <p>some stuff here</p></div> </div> when I do $("myid").slideToggle("slow"); , if the content of has bigger height over box, my content overflows from the bottom of the "box" class, weirdly this doesn't happen with other browsers but IE8 How can I fix this issue so that when "myid" starts to display content, height of the .box resizes itself to fit the inner div.

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• Can this be considered Clean Code / Best Practice?

  - by MRFerocius

  Guys, How are you doing today? I have the following question because I will follow this strategy for all my helpers (to deal with the DB entities) Is this considered a good practice or is it going to be unmaintainable later? public class HelperArea : AbstractHelper { event OperationPerformed<Area> OnAreaInserting; event OperationPerformed<Area> OnAreaInserted; event OperationPerformed<Area> OnExceptionOccured; public void Insert(Area element) { try { if (OnAreaInserting != null) OnAreaInserting(element); DBase.Context.Areas.InsertOnSubmit(new AtlasWFM_Mapping.Mapping.Area { areaDescripcion = element.Description, areaNegocioID = element.BusinessID, areaGUID = Guid.NewGuid(), areaEstado = element.Status, }); DBase.Context.SubmitChanges(); if (OnAreaInserted != null) OnAreaInserted(element); } catch (Exception ex) { LogManager.ChangeStrategy(LogginStrategies.EVENT_VIEWER); LogManager.LogError(new LogInformation { logErrorType = ErrorType.CRITICAL, logException = ex, logMensaje = "Error inserting Area" }); if (OnExceptionOccured != null) OnExceptionOccured(elemento); } } I want to know if it is a good way to handle the event on the Exception to let subscribers know that there has been an exception inserting that Area. And the way to log the Exception, is is OK to do it this way? Any suggestion to make it better?

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• jQuery cycle floats on top of other content

  - by Angie Dubis

  I tried to replace my Flash video with a jQuery cycle. The cycle works, but the images will not stay in the editable region I placed them in. Instead they are floating on top of other content. Any ideas? This is happening on the home page of massageeducator.com There are 2 cycles on the page. “Slideshow1” and “slideshow2”. “slideshow1” works perfectly. The only thing I did differently was set up “slideshow2” as a library item since it will appear on every page, but added function code manually. I tried adding code and images via the template and had the same issue. I also tried adding both the function code and slideshow to each page instead of library item - same problem. I have both slide shows pointing to the same jquery.cycle.lite.1.0.js. Should I rename this .js file and have each cycle point to a different file? I am new to jQuery so any help is appreciated. I can't seem to post my code due to the spam filters in here!

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• Attach an HREF and a class to an img link generated by the PhotoSlider script?

  - by Frank Bailey

  Hi folks, I'm using the very nice PhotoSlider script from http://opiefoto.com/articles/photoslider to create a slide show of images for one of my clients. This script replaces a previous hand-coded Javascript solution that allowed for the large image to be clicked resulting in a lightbox modal popup showing the full-size version of the clicked picture. Of course the client insists that this functionality remain intact, but the HTML code for the large image is generated on-the-fly by the PhotoSlider script itself. This means I'll need to modify the script slightly to attach a class ("lightbox") and an href (or just a click event, whichever makes more sense), but I'm not quite sure how best to accomplish this. I figure the event and class will have to be attached each time a thumbnail is clicked, but if this isn't the best way to do it any advice will be appreciated. The script is implemented into my page as can be seen here, without the click or class. I'd really appreciate any assistance stackoverflowites can offer. Thanks in advance!

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• Avoid Browser Pop-up Blockers

  - by Pablo Fernandez

  Is there a set of best-practices or advice to avoid pop up windows being blocked by the different browsers pop-up blockers? By pop-up I mean windows created by either window.open or window.showModalDialog methods. Thanks a lot

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• How to browse (no text editor) .rst files ?

  - by Eric

  In many django projects, in the docs directory I can see *.rst files : What is the best way to browse them (without using a text editor of course) ? Is that possible to generate HTML ?

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• Accress Parent Page's Viewstate in ASP.NET

  - by rachmos

  OK, I guess I'm missing something obvious here, but I still can't make it work... I have a page in ASP.NET. I have a nested class inside the page. I have a property in this nested class. How can I access the page's viewstate from the property's Set statement? Thanks!

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• how to retrieve informatin from deleted row

  - by JM

  How can I retrie infromation from delete rows. I delete some rows from table in dataset, then I use method GetChanges(DataRowState.Deleted) to get deleted rows. I try delete rows in original table on server side, but it finished with this errors. System.Data.DeletedRowInaccessibleException: Deleted row information cannot be accessed through the row. What is correct way? Here is my code, any advice? Thank you everybody Dataset ds = //get dataset from client side //get changes DataTable delRows = ds.Tables[0].GetChanges(DataRowState.Deleted); //try delete rows in table in DB if (delRows != null) { string connStr = WebConfigurationManager.ConnectionStrings["Employees"].ConnectionString; conn = new SqlConnection(connStr); conn.Open(); for (int i = 0; i < delRows.Rows.Count; i++) { string cmdText = string.Format("DELETE Tab1 WHERE Surname=@Surname"); cmd = new SqlCommand() { Connection = conn, CommandText = cmdText }; //here is problem, I need get surnames from rows which was deleted var sqlParam = new SqlParameter(@"Surname", SqlDbType.VarChar) { Value = delRows.Rows[i][1].ToString() }; cmd.Parameters.Add(sqlParam); cmd.CommandText = cmdText; cmd.Connection = conn; cmd.ExecuteNonQuery(); } }

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• When opening a file in perl, how can I automatically use STDIN/OUT if the file name is "-"?

  - by Ryan Thompson

  I have a perl program that takes input and output file arguments, and I'd like to support the convention of using "-" to specify standard input/output. The problem is that I can't just open the file name, because open(my $input, '<', '-') opens a file called -, not standard input. So I have to do something like this: my $input_fh; if ($input_filename eq '-') { # Special case: get the stdin handle $input_fh = *STDIN{IO}; } else { # Standard case: open the file open($input_fh, '<', $input_filename); } And similarly for the output file. Is there any way to do this without testing for the special case myself? I know I could hack the ARGV filehandle to do this for input, but that won't work for output.

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• CSS :after pseudo element on INPUT field

  - by matra

  Hi, I am trying to use :after CSS pseudo element on INPUT field, but it does not work. If I use it with SPAN, it works OK. <style type="text/css"> .mystyle:after {content:url(smiley.gif);} .mystyle {color:red;} </style> This works (puts the smily after "buu!" and berfore "some more") <span class="mystyle">buuu!</span>a some more This does not work - it only color someValue in red, but there is no smiley. <input class="mystyle" type="text" value="someValue"> What am I doing wrong? should I use another pseudo selector. Note: I can not add SPAN sround my INPUT; because it is being generated by a third party control. Matraj

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• Is there a way to do something like LVM over NFS?

  - by warren

  I realize that since NFS is not block-level, LVM can't be used directly. However: is there a way to combine multiple NFS exports (from, say, 3 servers) into one mount point on a different server? Specifically, I'd like to be able to do this on RHEL 4 (or 5, and re-export the combined mount to my RHEL 4 server). expansion The reason I pegged lvm is that I want a bunch of exported mounts (servera:/mnt/export, serverb:/mnt/export, serverc:/mnt/export, etc) to all mount at /mnt/space so that my /mnt/space on this server (serverx) as one large filesystem. Yes, I know that re-exporting is generally a Bad Thing™ but thought it might work, if there was a way to accomplish this on a newer release as opposed to an older one From reading the unionfs docs, it appears that I can't use it over a remote connection - have I misread it? More accurately, since Union FS merges the contents of multiple branches, but makes them appear as one, it doesn't seem to go in reverse: I'm trying to mount a bunch of NFS points in a merged fashion, then write to them - not caring where data goes, a la LVM .

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• Where does Windows Vista's Notes gadget store your notes?

  - by D Connors

  I like to use the default notes gadget in Windows Vista, and I want to synchronize my notes between my PC and my laptop. I'm going to use Dropbox, so I just need to know where does the gadget store my notes. I looked inside the Appdata folder and couldn't find the actual notes (only configuration files). Where are they? They have to be stored somewhere, since they are saved even if you close the sidebar.

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• Something to add to your library...

  - by werner.de.gruyter

  There is a new book in town: The Grid Control Handbook. Featuring an in-depth discussion of what Grid Control is and what Grid Control can do for your IT environment. It starts right at the beginning, and guides you through the all steps of a typical deployment: From the planning phase, to installing, to the strengthening of the environment and finally (most importantly) the maintenance and daily-use of the product. And there are quite a few tips, tricks, workshops and best practices along the way to help you with some very practical day-to-day challenges. For all those using Grid Control, something definitely worth checking out!

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• How to Use SEO Services to Have a Successful Website

  Essentially the optimization of web pages in a site is required because search engines are software programs based on a specific algorithm that is used at the time of its crawling into your website. Each website has numerous web pages and it is practically difficult to index and crawl each and every web page. No search engine can perform this function.

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• SEO Marketing Guide

  SEO marketing is something that you should know as much about as possible if you have a website. You will find that the more that you know about this topic, the better off your website will be in terms of success.

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• The Best Internet Marketing Tool is a Search Engine

  Two of the best internet marketing tools that you can get a hold of today is a keyword tool, and a search engine. Thankfully, both are free. A keyword tool that you might like to use is the excellent Google keyword tool which the search engine giant provides to anyone who wants to use it.

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• SEO Optimization

  With so many websites being uploaded to the internet every day, one might find it difficult to get his or her website marketed on the internet. Many people have been turning to SEO optimization for help with internet marketing and advertising.

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• What Exactly is CSS and Can it Better Your Website?

  Cascading Style Sheets or CSS are the design side of HTML. In other words Style Sheets are the clothing you put over a web pages HTML to design fonts, colors, layouts, and the arrangement and separation of elements on the page.

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• Nice Web Site, Now What?

  So you got someone or several people to your web site maybe through organic search or from a referring site, you might have just met someone and they went to your site to check out your company. Great job. Now what?

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• An algorithm to find bounding box of closed bezier curves?

  - by Sorush Rabiee

  I'm looking for an algorithm to find bounding box (max/min points) of a closed quadratic bezier curve in Cartesian axis: input: C (a closed bezier curve) output: A B C D points

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• SQL to delete duplicate records in a table [closed]

  - by oo

  Possible Duplicate: Delete duplicate records from a SQL table without a primary key I have a table with the columns person_ID firstname lastname and I somehow ended up with a bunch of duplicates. Is there any way to look at all columns where firstname and lastname are the same and delete all except one of them (it doesn't matter which one is left as they are all the same.) EDIT: I just found a duplicate question and perfect answer: http://stackoverflow.com/questions/985384/delete-duplicate-records-from-a-sql-table-without-a-primary-key

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• Getting page status history in Sharepoint

  - by user307852

  Hi, I need to get all dates and people modifications to currenlty displayed page, all changes which have been published and end user can see difference between them. My page is aspx connected to pageLayout in which is richhtmlfield with article. How to do that? Is it possible to do that ?

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• Am I deleting this properly?

  - by atch

  I have some struct: struct A { const char* name_; A* left_; A* right_; A(const char* name):name_(name), left_(nullptr), right_(nullptr){} A(const A&); //A(const A*);//ToDo A& operator=(const A&); ~A() { /*ToDo*/ }; }; /*Just to compile*/ A& A::operator=(const A& pattern) { //check for self-assignment if (this != &pattern) { void* p = new char[sizeof(A)]; } return *this; } A::A(const A& pat) { void* p = new char[sizeof(A)]; A* tmp = new (p) A("tmp"); tmp->~A(); delete tmp;//I WONDER IF HERE I SHOULD USE DIFFERENT delete[]? } int _tmain(int argc, _TCHAR* argv[]) { A a("a"); A b = a; cin.get(); return 0; } Guys I know this is far from ideal and far from finished. But please don't tell me the answer how to do it properly. I'm trying to figure it out myself. The only think I would like to know if I'm deleting my memory in proper way. Thanks.

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• What is the best way to implement a callback scenario using WCF and ASP.NET MVC?

  - by Mark Struzinski

  I am new to WCF. I just finished reading Learning WCF and I think I've got a pretty good grasp of the fundamentals. I am adding functionality to a line of business app that runs on ASP.NET MVC entirely inside the corporate LAN. I am calling into a service that will also send me events as they occur (and not as responses to service calls). These events can occur at any point during the user's session. I have the service written, and it is able to pick up these events. What would be the best way to deliver these events to the user? My initial thought is to run the WCF service in duplex mode over net TCP and implement the events as callbacks. Using this scenario, the best way I can think up to deliver the events to the user is a dictionary object stored in the session. The dictionary would be populated by the callbacks and polled on a set frequency for delivery via AJAX calls. Has anyone dealt with this scenario? Is there a more efficient way to implement this?

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