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• Returning a local object from a function

  - by pocoa

  Is this the right way to return an object from a function? Car getCar(string model, int year) { Car c(model, year); return c; } void displayCar(Car &car) { cout << car.getModel() << ", " << car.getYear() << endl; } displayCar(getCar("Honda", 1999)); I'm getting an error, "taking address of temporary". Should I use this way: Car &getCar(string model, int year) { Car c(model, year); return c; }

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• How to use javascript to include struts html tag?

  - by Dj

  I have a check box and a text box. I have used struts tags and Now i need to validate that if the check box is checked, i should gray out (disable) the text box. If it is unchecked the text box shold take phone numbers. I did lik this, i called a java script on click of check box and did a innerHtml based on wheather checkbox ix checked or not. var status_check=document.getElementById("line1Checked").checked; if(status_check==true){ text=""; } else{ text=""; } alert(text); document.getElementById("line1").innerHTML=text; this works but if i use, var status_check=document.getElementById("line1Checked").checked; if(status_check==true){ "; } else{ "; } alert(text); document.getElementById("line1").innerHTML=text; It doesn work. All i know is struts tags execute at server. is there any possiblity to achieve this? Please help me.

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• How do I debug JavaScript .onlick event?

  - by user3700824

  I'm learning JavaScript but seem to be having a problem. I have a piece of code that is executed when the page is fully loaded. The function then gathers all the button elements on my HTML page. From here I loop through getting each button's title attribute and then assign an onclick event to the button that is equal to a function that writes to the console.log with the title. I have tried various ways of doing this but it is not working. Here is the JavaScript code that I'm working with. Currently all it does is loop through calling the function and logging the tile to the console.log, but this is not supposed to happen. Each time I click the button it should call the function with its title and log that. window.onload = myPageIsReady; function myPageIsReady(){ var myList = document.getElementsByTagName("button"); var myTitle = []; for(var i = 0; i < myList.length; i++){ myTitle[i] = myList[i].getAttribute("title"); myList[i].onclick = getMyTitle(myTitle[i]); }; function getMyTitle(myTitle){ console.log(myTitle); }; };

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• Android - Where to store generated bitmaps?

  - by Josh

  I've got an app which dynamically generates anywhere from 6 to 100 small bitmaps for the user to move around the screen in a given session. I currently generate them in onCreate and store them to the sd card, so that after an orientation change I can grab them out of external storage and display them again. However, this takes time (the loading) and I'd like to keep the bitmap references around between lifecyle changes for quicker access. My question is, is there a better place to store my generated bitmaps? I was thinking about creating a static storage library in my base activity, something that would only need to be reloaded when the app is completely removed from memory (shutdown, other apps need resources, 30 minute restart, etc). Ideally, I'd like the user to be able to back out to the title screen, click a "Resume" button, and in onCreate I just have access to those resident bitmap references instead of having to load them from storage again. For this reason I don't think Activity.onRetainNonConfigurationInstance is what I need. Alternatively, is there a better way to handle multiple generated bitmaps than what I'm doing or the plan I described?

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• How to detect page redirect with PHP?

  - by blabus

  I'm trying to detect whether an image exists on a remote server. However, I've tried several methods and can't get any of them to work. Right now I'm trying to use this: if (!CheckImageExists("http://img2.netcarshow.com/ABT-Audi_R8_2008_1024x768_wallpaper_01.jpg")) { print_r("DOES NOT EXIST"); } else { print_r("DOES EXIST"); }; function CheckImageExists($imgUrl) { if (fopen($imgUrl, "r")) { return true; } else { return false; }; }; But it returns 'true' whether the image actually exists or not (the above image should, but change it to gibberish and it still will return 'true'). I have a feeling it could be because if the URL does not exist, it redirects to the homepage of the site. But I don't know how to detect that. Thanks for any help!

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• Get the image file path

  - by Googler

  HI, I am trying to retrive the filname of the image file from a file path in my code. My filepath: c:\mydocuments\pictures\image.jpg which method can i use in c# to get he filename of the above mentioned path. Like String file = image.jpg I have used the system.drawing to get he path, but it returns null. my code: string file = System.drawing.image.fromfile(filepath,true); Is this the right way to get the image file name or is there any other inbuilt method in c#. Pls help me on this?

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• iPhone - how to be notified of call completion

  - by ecodan

  Hi- I'm developing an application that needs to take action on completed phone calls, preferably right after the call ends but minimally once per day. I've read up on the new CoreTelphony framework, and it seems I can get call events if my app is active, but I don't see how to launch/wake my app when a call ends if my app is not the foreground app. I also don't see how any of the new pseudo-background "modes" would allow my app to listen for these events in the background. Do any of you know how this might be done? If post-call processing isn't possible, then I'd like to figure out a way to automatically wake my app up once per day, pull all of the call events since the last wakeup, and process them. I know how I might do this with Push or Local notifications, but my understanding is that those require user action to continue; in this case, I just want the processing to happen automatically. Is there a mechanism that would enable this? Thanks, Dan

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• Filter records based on Date Range + ASP.NET + Regex + Javascript

  - by ASIF

  Hi I need to filter data based on a date range. My table has a field Process date. I need to filter the records and display those in the range FromDate to ToDate. How do I write a function in VB.NET which can help me filter the data. Protected Shared Function ObjectInRange(ByRef obj As Object, ByVal str1 As String, ByVal str2 As String) As Boolean Dim inRange = False For Each prop As PropertyInfo In obj.GetType().GetProperties() Dim propVal = prop.GetValue(obj, Nothing) If propVal Is Nothing Then Continue For End If Dim propValString = Convert.ToString(propVal) If Regex....WHAT GOES HERE? Then inRange = True Exit For End If Next Return inRange End Function Am I on the right track??

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• posting a variable with jquery and receiving it on other page

  - by Billa

  I want to post a varible "id" to a page. I'm trying following code, but I cant get the id value, it says "undefined". function box(){ var id=$(this).attr("id"); $("#votebox").slideDown("slow"); $("#flash").fadeIn("slow"); $.ajax({ type: "POST", //I want to post the "id" to the rating page. data: "id="+$(this).attr("id"), url: "rating.php", success: function(html){ $("#flash").fadeOut("slow"); $("#content").html(html); } }); } This function is called in following code. In the following code too, the id is posted to the page "votes.php", and it works fine, but in the above code when I'm trying to post the id to the rating.php page, it does not send. $(function(){ $("a.vote_up").click(function(){ the_id = $(this).attr('id'); $("span#votes_count"+the_id).fadeOut("fast"); $.ajax({ type: "POST", data: "action=vote_up&id="+$(this).attr("id"), url: "votes.php", success: function(msg) { $("span#votes_up"+the_id).fadeOut(); $("span#votes_up"+the_id).html(msg); $("span#votes_up"+the_id).fadeIn(); var that = this; box.call(that); } }); }); }); rating.php <? $id = $_POST['id']; echo $id; ?> The html part is: <a href='javascript:;' class='vote_up' id='<?php echo $row['id']; ?>'>Vote Up!</a> I'll appriciate any help.

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• Visual Studio 2008\Backup Files folder created when every new VS instance is opened.

  - by Lukasz Podolak

  Hi, I think I have something broken with the path that VS 2008 saves the backup files. Since few days, it creates a new "Visual Studio 2008" directory in the same folder that my .sln file exists. Then, after the time of the first auto-save expires, the backup files are being saved to this folder. I browsed the tools-options dialog but I haven't found a way to set the directory to by static: C:\documents and setings\\My Documents\Visual Studio 2008\Backup Files. Can anybody point me with the right solution to this problem (probably the correct registry entry - I guess) ? thanks

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• keyboard in UIWebView shows and then hides itself on input focus

  - by Jake

  I have a page that's loading into a UIWebView (which takes 100% of the screen) on an iPad. When I touch a text field, the page positions the text field to the right place and the keyboard starts to come up, but then it turns around and goes back down and blur is called on the input field. When I try this same page in mobile Safari, the keyboard is able to deploy successfully. I can't figure out what the rules are for the keyboard to show successfully and stay up = and why this is different for uiwebview than safari. All my research on the subject has yielded no answers.

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• Getting my webapp to be database agnostic with Hibernate...

  - by JellyHead

  So the ultimate in scope-creep came in the other day: since we're using Hibernate, could we make our webapp run on Oracle as well as MySQL, interchangably? I thought this would be a simple case of changing hibernate.cfg.xml so that instead of explicity stating MySQL-specific options, it would reference a JNDI datasource, allowing the application to build regardless of the database we intend to deploy to. Then changing to a different database would simply mean changing the separate datasource configuration in JBoss, Jetty, WebLogic etc. Is this realistic? Well, I got as far as setting that up in Jetty, but What's tripping me up right now is error about the hibernate.dialect not having been set in hibernate.cfg.xml. But If I set the dialect there, then my app is still going to be built in either MySQL or Oracle flavours, which is not really what I want. Either I'm trying to attempt the impossible or I've missed something fundamentally obvious... anyone else had a similar problem (and subsequent solution/workaround)?

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• Opinions regarding C++ programming practice

  - by Sagar

  I have a program that I am writing, not too big. Apart from the main function, it has about 15 other functions that called for various tasks at various times. The code works just fine all in one file, and as it is right now. However, I was wondering if anyone had any advice on whether it is smarter/more efficient/better programming to put those functions in a separate file different from where main is, or whether it even matters at all. If yes, why? If no, why not? I am not new at C++, but definitely not an expert either, so if you think this question is stupid, feel free to tell me so. Thanks for your time!

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• Is it possible to give a python dict an initial capacity (and is it usefull)

  - by Peter Smit

  I am filling a python dict with around 10,000,000 items. My understanding of dict (or hashtables) is that when too much elements get in them, the need to resize, an operation that cost quite some time. Is there a way to say to a python dict that you will be storing at least n items in it, so that it can allocate memory from the start? Or will this optimization not do any good to my running speed? (And no, I have not checked that the slowness of my small script is because of this, I actually wouldn't now how to do that. This is however something I would do in Java, set the initial capacity of the HashSet right)

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• Creating C# form fields with events based off of a text file

  - by evolve

  I need to generate windows form fields based off of a text file that I am parsing. I also want to automatically generate validation event handlers which all will be basically the same only the form field and the regular expression which is used to validate the field will change. I'm having a difficult time figuring out the quickest and easiest method to go about doing this. Any pointers in the right direction would really be great, maybe even some keywords that I'm missing. I can only imagine this type of question has been covered before, I just don't know what I'm searching for really.

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• ASP.NET - Update Dataset directly to DB

  - by karthik

  Hi, Description: I wanted to update dataset to database in Asp.NET. Instead of retrieving the entire table, I am retrieving only one record using the following statement :- select * from Products where ProductID=3 Now I wanted to update dataset directly in to DB by using following statements (DAP 4.1) db.UpdateDataSet(ds, ds.Tables[0].TableName, null, cmdupdate, null, UpdateBehavior.Standard); Questions Can I Retrieve only one row from DB while a lot of other records are there and update back using Adapter update? ( In other words, I am not selecting all records from table) I am using Data Application Block 4.1? It will work there right? If anyone can give example for update will be great ( with Procedures). Thanks Ka

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• Can any function be a deleted-function?

  - by Caspin

  The working draft explicitly calls out that defaulted-functions must be special member functions (eg copy-constructor, default-constructor, etc). Which makes perfect sense. However, I don't see any such restriction on deleted-functions. Is that right? Or in other words are these three examples valid c++0? struct Foo { // 1 int bar( int ) = delete; }; // 2 int baz( int ) = delete; template< typename T > int boo( T t ); // 3 template<> int boo<int>(int t) = delete;

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• Google App Engine datastore encoding?

  - by sernaferna

  I'm using the GAE datastore for a Java application, and storing some text that will be in numerous languages. In my servlet, I'm first checking to see if there's any data in the data store, and, if not, I'm creating some, similar to the following: ArrayList<Lang> list = new ArrayList<Lang>(); list.add(new Lang("EN", "English", 1)); list.add(new Lang("ES", "Español", 0)); //more languages here... PersistenceManager pm = PMF.get().getPersistenceManager(); for(Lang l : list) { pm.makePersistent(l); } Since this is using JDO, I guess I should include the relevent parts of the Lang class too: @PersistenceCapable public class Lang { @PrimaryKey private String code; @Persistent private String name; @Persistent private int popularity; // getters & setters & constructors... } However, the non-ASCII characters are giving me grief. I've set my Eclipse project to use the UTF-8 encoding instead of the default Cp1252, so I think I'm okay from that perspective, but when I use the App Engine Data Viewer to look at my data, that Español entry becomes Español, and when I click on it to view it, I get a 500 Server Error. (There are some other entries with right-to-left text that don't even show up in the Data Viewer at all, but one problem at a time...) Is there anything special I can do in my code to set the character encoding, or specify to GAE that the data I'm storing is UTF-8? Or is the problem on the Eclipse side, and is there something I should be doing with my Java code?

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• Error on SQL insert statement

  - by Ashley Stewart

  I exported a recordset from one database into a csv file, and when I try to import it into another using mysql workbench I keep this this error message: Executing SQL script in server ERROR: Error 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 ' 'Lord it Over', 'Ben', '1993-03-01', 'TRC', NULL, 1983, '1999-09-01', 'NULL', '' at line 1 INSERT INTO `TRC`.`horse` (`horse_id`, `registered_name`, `stable_name`, `arrival_date`, `last_known_location`, `is_ex_racer`, `birth_year`, `death_date`, `horse_comments`, `sex`, `referral_date`, `horse_height`, `arrival_weight`, `passport_no`, `microchip_no`, `is_on_waiting_list`) VALUES (, 'Lord it Over', 'Ben', '1993-03-01', 'TRC', NULL, 1983, '1999-09-01', 'NULL', 'NULL', 'NULL', NULL, NULL, 'NULL', 'NULL', 0) SQL script execution finished: statements: 29 succeeded, 1 failed Fetching back view definitions in final form. Nothing to fetch Any help would be appreciated as their appears to be no errors as far as I can see.

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• Textmate, open file at Caret

  - by amjags

  I bet this is really obvious but I can't find how to open the linked file that the Caret is currently on in Textmate. For example in the likes of Dreamweaver you can click in the index.html portion of <a href"index.html" hit cmd-D and it opens this file in a new tab. Is this possible? Would also be good to do this with <img src="image.jpg" to open the file directly into Photoshop. Solved! Solution for Patrick below. I used a modified version of Daustin777's example above to create a Command called OpenatCaret. The command is: open "$TM_PROJECT_DIRECTORY"/"$TM_SELECTED_TEXT" I then extended this by installing a macro which allowed you to select a path between double quotes but not including the quotes. I got this from the macromates board here. http://lists.macromates.com/textmate/2009-June/028965.html To wrap them both together I put my cursor in a path and recorded a new macro where I run the "Select within double quotes" macro and then the OpenatCaret command. I then named this OpenProjectFileAtCaret and bound this macro to cmd-D. Works a treat and is used all the time. Just make sure you have the correct default apps setup for each file type you are opening eg. Textmate for php, asp, html and it will open them in a new tab.

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• Replacing TCP/IP pipe with WCF

  - by msarchet

  So currently my company is using a TCP/IP connection to talk between server and client programs, right now we are building this connection using System.RunTime.Remoting, which is clunky and not that reliable. It was built about 5 years ago and the model keeps getting reused and it's starting to propagate some issues, ports used, refused connections, etc. I'm trying to find some resources on how to change this over to WCF but I'm not really sure what I am looking for or what I should be searching. If you want some more information on what were actually doing with it I can go into some detail, but I'll need to pull up the code and make sure I explain it completely. thanks!

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• jQuery replaceWith(data) is not correctly doing his job

  - by Tristan

  Hello, i did a small ajax div refresh, but instead of replacing the values with the new ones, jquery adds the new data before the old ones. What possibily causes that please ? <script type="text/javascript"> $(document).ready(function(){ $('#AJAX').click(function(e){ e.preventDefault(); var hebergeur = $('#hebergeurJQUERY').val(); $.post("/statistiques/maj-bloc-commentaires.php", { hebergeur : hebergeur }, function(data){ // déclenchée seulement si succès $("#TOREPLACE").replaceWith(data).val( ); }); }); }); </script> The HTML : print '<div id="a_remplacer"> <div class="detail_commentaires"> <table class="tableau_detail_commentaires"> <tr> <td class="tab_space">Serveur <strong>'.$row['type'].'</strong></td> <td>Qualite</td> <td style="color:'.$c_vote.'">'.htmlentities($row['vote']).'</td> </tr> </div> </div> The PHP ajax echo : print '<div id="a_remplacer"><div class="detail_commentaires" > <table class="tableau_detail_commentaires"> <tr> <td class="tab_space">Serveur <strong>'.$row['type'].'</strong></td> <td>Qualite</td> <td style="color:'.$c_vote.'">'.htmlentities($row['vote']).'</td> </tr></div></div> Thanks

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• Some questions about the .NET Entity Framework and Stored Procedures

  - by Bara

  Hey everyone, I had a couple of questions relating to the .NET Entity Framework and using stored procedures. Here goes: I know that we can right click a stored procedure and choose Function Import to be able to use with code. Is there a way to do this for many stored procedures at once? When doing a Function Import, I can create a new Complex type or use an existing Complex type. Well, how can I access Complex types/objects that are outside of the edmx file? That is, if I have a class in my project, is it possible to access it while doing a Function Import? When calling the stored procedure from code, it returns an IEnumerable of the Complex type I set it as. However, sometimes these complex types do not have all of the properties that I need, so I create a new class in my project that inherits from the complex type used in the stored procedure. Problem is, I can't seem to cast the complex type returned from the stored procedure to the new class I created. Any reason why I can't do this? What I ended up doing is looping through the IEnumerable and adding each item to a new list of the class that I created. But this feels and looks messy. Bara

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• Write a dll that is accessable from VS 2003 VC++ code

  - by John

  I need to be able to write a DLL in either C# or VC++ that is accessible from code that is written in Visual Studio 2003 VC++. It looks like the code is unmanaged (uses * for pointers) VC++ and this DLL needs to be able to drop right in and be accessed by the current code. The DLL is an RS232 driver that needs to be able to return an int for an error code and pass back, by reference, some measured values, to the calling program. Will I even be able to write this in C#? If not, I only have access to Visual Studio 2005 or 2008. Will I be able to write my code in either, and will that DLL be able to be called from the current code base? Or do I have to go looking on ebay for a copy of VS 2003?

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• PHP/MySQL Database Issues

  - by queryne

  PHP/MySQL newbie question. I have a database I've imported into my local phpmyadmin. However it seems I can't access it from my a php application. The connection string seems right and when I try to authenticate user credentials to access database information, no problems. However authenticate everyone and knows when I put in fake credentials. Still it won't pull any other information from the database. For instance, once a users login they should see something like, "Hello username", that kind of thing. At this point I see "Hello" without the username. Any ideas what i might be missing?

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