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  • Using operator+ without leaking memory?

    - by xokmzxoo
    So the code in question is this: const String String::operator+ (const String& rhs) { String tmp; tmp.Set(this->mString); tmp.Append(rhs.mString); return tmp; } This of course places the String on the stack and it gets removed and returns garbage. And placing it on the heap would leak memory. So how should I do this?

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  • How to Compile C++ code using C# application

    - by Kasun
    Hi all, I need to compile C++ code in windows application and append the results (Output or execution errors) on rich text box. I use CodeDomProvider Class but I unable to compile the code using C++ language. Please Help.......... Need Proper answer in easy way....

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  • Command Not working in separate thread in J2me.

    - by RishiPatel
    I am creating a bluetooth application. I created a simple midlet with a exit command and i create a thread for finding the service and discovering the device. While doing so it displays a animated screen on which i added the parent commandListener for exit command. After successful connection both user is represented with greetings(Current screen calls the parent Display method setCurrent for displaying itself). This screen also have CommandListener set to the parent. Now i want to add few more commands. I Implemented the CommandLIstener Interface in this class, added few commands but the commands are not working. I dont whats wen wrong. I am giving u Code snippets to fully describle my issue : - package name Imports here public class MyMidlet extends MIDlet implements CommandListener { public CommandListener theListener; public Display theDisplay; public Command exitCommand; public MyMidlet() { // Retrieve the display for this MIDlet //Create the initial screen } public void startApp() throws MIDletStateChangeException { } public void pauseApp() { } public void destroyApp(boolean unconditional) { } public void commandAction(Command c, Displayable d) { // Determine if the exit command was selected if (c == exitCommand) { //End application here notifyDestroyed(); } else { //Start the new thread here } } } Now here is the code for the class which is invoked by the above midlet in a separate thread; package here; imports here public class MyService implements Runnable, CommandListener { private MyMidlet parent; private StreamConnection conn; private OutputStream output; private InputStream input; public Command sendCommand; private TextField messageToSend Form form; public BChatService(boolean isServer, BChatMidlet parent) { //some stuff here this.parent = parent; } public void run() { //functino for showing animation here try { input = conn.openInputStream(); output = conn.openOutputStream(); } catch (IOException e) { displayError("IO Error", "An error occurred while opening " + "the input and output streams" + "(IOException: " + e.getMessage() + ")"); try { conn.close(); } catch (Exception ex) { } return; } // Create the Form here when service is discoverd and greets the users Command sendCommand = new Command("Send", Command.ITEM, 2); exitCommand = new Command("Exit", Command.EXIT, 1); form.addCommand(exitCommand); form.addCommand(sendCommand); parent.theDisplay.setCurrent(form); form.setCommandListener(this); public void commandAction(Command c, Displayable d) { if (c == exitCommand) { // End the game parent.destroyApp(true); parent.notifyDestroyed(); } if(c == sendCommand) { form.append("SOme text here"); } } } When i select the Send command, the string doesnt append in form neither exit command works. What can be the possible cause for it?? I need to implement this functionality...Is there any other way to achieve this??

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  • GreaseMonkey + Ajax + Remember page?

    - by acidzombie24
    I load jquery into my greasemonkey script and when the user clicks the start button the script makes a bunch of ajax calls. I then empty body and append data. When i click on something and hit back instead of getting the page post script i lose all the data and need to run the ajax calls again (it can take seconds to run). How do i make it not lose the changes?

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  • how to make a part of the textbox as readonly

    - by vakas
    i have a tagtextbox on my page when a user selects a category that category name goes to tagtextbox now i want that this category name user cant change but he can append some more tags means first tag becomes readonly and further he can add too in same text box

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  • Writing to an xml file with xmllite?

    - by Chris
    I have an xml file which holds a set of "game" nodes (which contain details about saved gameplay, as you'd save your game on any console game). All of this is contained within a "games" root node. I'm implementing save functionality to this xml file and wish to be able to append or overwrite a "game" node and its child nodes within the "games" root node. How can this be accomplished with xmllite.dll?

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  • How do I open a file in such a way that if the file doesn't exist it will be created and opened automatically?

    - by snakile
    Here's how I open a file for writing+ : if( fopen_s( &f, fileName, "w+" ) !=0 ) { printf("Open file failed\n"); return; } fprintf_s(f, "content"); If the file doesn't exist the open operation fails. What's the right way to fopen if I want to create the file automatically if the file doesn't already exist? EDIT: If the file does exist, I would like fprintf to overwrite the file, not to append to it.

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  • JQuery performance issue (Or just bad CODING!)

    - by ferronrsmith
    function getItemDialogContent(planItemType) { var oDialogContent = $('<div/>').append($('#cardDialogHelper').html()).addClass("card"); if (planItemType) { oDialogContent.find('#cardDialogHeader').addClass(planItemType).find('#dialogTitle').html(planItemType); oDialogContent.find('#cardDialogCustomFields').html($('#' + planItemType + 'DialogFields').html()); if (planItemType == 'announcement' || planItemType == 'question') { oDialogContent.find("#dialogPin").remove(); } } return oDialogContent; } I am doing some code cleanup for a web application I am working on. The above method lags in IE and most of our user base use IE. Can someone help me. I figure the find() method is very expensive because of the DOM traversal and I am thinking of optimizing. Any ideas anyone? Thanks in advance :D Been doing some profiling on the application and the following line seems to be causing alot of problems. help me please. is there any way I can optimize ? $('').append($('#cardDialogHelper').html()).addClass("card"); This is the ajax call that does the work. Is there a way to do some of this after the call. Please help me. (Added some functions I thought would be helpful in the diagnosis) GetAllPlansTemp = function() { $.getJSON("/SAMPLE/GetAllPlanItems",processData); } processData = function(data) { _throbber = showThrobber(); var sortedPlanItems = $(data.d).sort("Sequence", "asc"); // hideThrobber(_throbber); $(sortedPlanItems).each(createCardSkipTimelime); doCardStacks(); doTimelineFormat(); if (boolViewAblePlans == 'false') { $("p").show(); } hideThrobber(_throbber); } function createCardSkipTimelime() { boolViewAblePlans = 'false'; if (this.__Deleted == 'true' || IsPastPlanItem(this)) { return; } boolViewAblePlans = 'true'; fixer += "\n" + this.TempKey; // fixes what looks like a js threading issue. var value = CreatePlanCard2(this, GetPlanCardStackContainer(this.__type)); UpdatePlanCardNoTimeLine(value, this); } function CreatePlanCard2(carddata, sContainer) { var sCardclass = GetPlanCardClass(carddata.__type); var editdialog = getItemDialogContent(sCardclass); return $('<div/>').attr('id', carddata.TempKey).card({ 'container': $(sContainer), 'cardclass': sCardclass, 'editdialog': editdialog, 'readonly': GetCardMode(carddata) }); }

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  • Program to change/obfuscate all hashes (MD5/SHA1) in a directory tree?

    - by anon
    Hi fellas, A) Are there any FOSS programs out there that can manage to hashchange all files in a directory tree? B) Failing that, what methods could be used to develop this capability in a (crappy) self-written program without requiring the program to be sophisticated and content-aware? Is there any (roughly) universally safe location within a file (for example, around EOF?) where on could one simply append/add psuedorandom data so the resulting hash is different? Is there a better/more elegant solution? Muchos gracias

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  • In python, what does len(list) do?

    - by nsharish
    My doubt is that if the len(list) calculates the length of the list everytime it is called or it returns the value of the builtin counter.I have a context where i need to check the length of list everytime in a loop, likelistData = [] for value in ioread(): if len(listData)=25: processlistdata() clearlistdata() listData.append(value) Should I check len(listData) every iteration, or can I have a counter for the length of the list.

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  • Why is the content of slice not changed in GO?

    - by Kid
    I thought that in GO language, slices are passed by reference. But why the following code doesn't change the content of slice c? Am I missing something? Thank you. package main import ( "fmt" ) func call(c []int) { c = append(c, 1) fmt.Println(c) } func main() { c := make([]int, 1, 5) fmt.Println(c) call(c) fmt.Println(c) } The result printed is: [0] [0 1] [0] while I was expecting [0] [0 1] [0 1]

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  • Add characters (',') every time a certain character ( , )is encountered ? Python 2.7.3

    - by draconisthe0ry
    Let's say you had a string test = 'wow, hello, how, are, you, doing' and you wanted full_list = ['wow','hello','how','are','you','doing'] i know you would start out with an empty list: empty_list = [] and would create a for loop to append the items into a list i'm just confused on how to go about this, I was trying something along the lines of: for i in test: if i == ',': then I get stuck . . .

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  • Is O_LARGEFILE needed just to write a large file?

    - by Daniel Trebbien
    Is the O_LARGEFILE flag needed if all that I want to do is write a large file (O_WRONLY) or append to a large file (O_APPEND | O_WRONLY)? From a thread that I read titled "Cannot write 2gb index file" on the CLucene-dev mailing list, it appears that O_LARGEFILE might be needed to write large files, but participants in that discussion are using O_RDWR, not O_WRONLY, so I am not sure.

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  • add html to div with jQuery

    - by mtwallet
    Hi. I am trying to add some additional html to a div with id slideshow using jQuery. My code: $("#slideshow").append("<a id="prev" title="Previous Slide">Previous Slide</a><a id="next" title="Next Slide">Next Slide</a>"); This isn't working, can anyone tell me what I am doing wrong?

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  • Access multiple objects/arrays in JSON in jQuery $.each

    - by user2880254
    I am trying to build a simple page to view messages saved in a mysql db via JSON and jQuery. My JSON IS {"unread_msgs":[{"id":"6","title":"33333","user1":"19","timestamp":"1383747146","client_id":"Generic"},{"id":"5","title":"42142","user1":"19","timestamp":"1383740864","client_id":"Generic"}],"read_msgs":[{"id":"4","title":"test to addnrow","user1":"19","timestamp":"1383676647","client_id":"Generic"},{"id":"2","title":"kll","user1":"19","timestamp":"1383675548","client_id":"Generic"},{"id":"1","title":"jkjljklj","user1":"19","timestamp":"1382539982","client_id":"Generic"}],"urm_t":2,"rm_t":3} My JS <script type="text/javascript"> function GetClientMsgs () { $.post("assets/server/client_msgs.php",{ client_id:local_client_id } ,function(data) { var MsgData = $.parseJSON(data); console.log("Msg json data parsed"); $.each(MsgData, function(key, value) { console.log(value); $('#unread_row').append('<td><a href="#read_pm" onClick="ReadMsg('+value.unread_msgs.id+'); return false;">'+value.unread_msgs.title+'</a></td><td><a href="#profile">'+value.unread_msgs.studioname+'</a></td><td>'+value.unread_msgs.timestamp+'</td><td><a href="#delete_msg" onClick="DeleteMsg('value.unread_msgs.id+'); return false;">X</a></td>'); $('#read_row').append('<td><a href="#read_pm" onClick="ReadMsg('+value.read_msgs.id+'); return false;">'+value.read_msgs.title+'</a></td><td><a href="#profile">'+value.read_msgs.studioname+'</a></td><td>'+value.read_msgs.timestamp+'</td><td><a href="#delete_msg" onClick="DeleteMsg('+value.read_msgs.id+'); return false;">X</a></td>'); }); }); } </script> PHP $msgs = array('unread_msgs' => $dn1s, 'read_msgs' => $dn2s, 'urm_t' => $unread_msgs, 'rm_t' => $read_msgs); $json = json_encode($msgs); I am trying to post values returned such as unread_msgs.title or .id and am not able to access any of the objects. I have searched on here and could not find something specific to my structure. Thanks alot.

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  • Stringbuilder ignores last space

    - by chead23
    I am initialising a StringBuilder as follows: StringBuilder builder = new StringBuilder("Symptoms are "); After this I loop through a list and add each string item to the end using foreach(var item in list) { builder.Append(item); } An example item would be something like "headache" but once i've appended it to "Symptoms are " and called builder.ToString() it shows: "Symptoms areHeadache...etc" as opposed to "Symptoms are Headache...etc" Why is it ignoring the space?

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  • Select options not showing in IE

    - by donkapone
    I have a dynamically generated select with some options and it shows the options fine in normal browsers, but its empty options in IE. Here's the generated HTML: <select name="0" id="custom_0" style="border-bottom: #c0cedb 1px solid; border-left: #c0cedb 1px solid; background-color: #ededed; width: 280px; font-size: 0.87em; border-top: #c0cedb 1px solid; border-right: #c0cedb 1px solid"> <option id="1000" value="0" name="00">1x2GB ECC DDRIII 2GB ECC DDRIII</option> <option id="1001" value="10" name="01">2x2GB ECC DDRIII 4GB ECC DDRIII (+10.00 €)</option> </select> I can't really show you the javascript, since there's so much of it and I would be able to make it simple just for a demo. Maybe you had some of you would've had a similar experience and could figure this one out. Thanks I've added some javascript: $('#custom_order').append('<tr id="custom_'+category+'_row"><td'+padding+'>'+header+'<select id="custom_'+category+'" name="'+category+'" style="background-color:#EDEDED;border:1px solid #C0CEDB;width:280px;font-size:0.87em"></select>'+plusspan+'</td></tr>'); for (var i=0;i<components[category]['value'].length;i++){ $('#custom_'+category).append('<option id="'+components[category]['value'][i]['id']+'" value="'+components[category]['value'][i]['price']+'"></option>'); removals(category,i); dependencies(category,i); selectInput(category); } getDiff(category); getDiff() function adds the values to the options with html() function. The weird thing is, if I alert the html of the option just after the getDiff() function, it shows the value filled out. And it I put the getDiff() function in the for loop where the options are generated, it fills the values and shows them in IE, just not the last one. I'm calling getDiff() outside the loop for optimization, and since I can add the values later after all the options are generated. Well at least I thought I could, since it works on Firefox and Chrome.

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  • How to use Split with jQuery?

    - by Matt
    I need to break apart a string that always looks like this: something -- something_else. I need to put "something_else" in another input field. Currently, this string example is being added to an HTML table row on the fly like this: tRow.append($('<td>').text($('[id$=txtEntry2]').val())); I figure "split" is the way to go but there is very little documentation that I can find yet.

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  • Concatenation of many lists in Python

    - by Space_C0wb0y
    Suppose i have a function like this: def getNeighbors(vertex) which returns a list of vertices that are neighbors of the given vertex. Now i want to create a list with all the neighbors of the neighbors. I do that like this: listOfNeighborsNeighbors = [] for neighborVertex in getNeighbors(vertex): listOfNeighborsNeighbors.append(getNeighbors(neighborsVertex)) Is there a more pythonic way to do that?

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  • Save JSON outputed from a URL to a file

    - by Aidan
    Hey Guys, How would I save JSON outputed by an URL to a file? e.g from the Twitter search API (this http://search.twitter.com/search.json?q=hi) Language isn't important. Thanks! edit // How would I then append further updates to EOF?

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  • How to refactor logging in C#?

    - by Jader Dias
    In my services all exposed methods have: try { // the method core is written here } catch(Exception ex) { Log.Append(ex); } It's boring and ugly to repeat it over and over again. There is any way to avoid that? There is better way to keep the service working even if exceptions occurs and keep sending the exception details to the Log class?

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