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  • Perform selector on paren NSOperation

    - by user326943
    I extend NSOperation (call it A) which contains NSOperationQueue for other NSOperations (which is another extended class different from A, call these operations B). When operation A is running (executing B operations) how do i call a specific function/method on operation A when certain event takes place on B operations? For example every operation B that finishes it calls a function on operation A returning itself? *Nested NSOperation and NSOperationQueue(s) Thanks

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  • Replace Infinite loop in Flex

    - by H P
    Hello, I want to access a webservice:getMonitorData() , on creationcomplete and returns an array, in an infinite loop so that the getIndex0.text is updated each time. Flex is not able to handle an infinite loop and gives a timeout error 1502. If I run the for loop until i<2000 or so it works fine. How can replace the loop so that my webservice is accessed continiously and the result is shown in getIndex0.text. This is how my application looks like: <?xml version="1.0" encoding="utf-8"?> <s:Group xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" width="400" height="300" xmlns:plcservicebean="server.services.plcservicebean.*" creationComplete="clientMonitor1()"> <fx:Script> <![CDATA[ import mx.collections.ArrayCollection; import mx.controls.Alert; import mx.rpc.CallResponder; import mx.rpc.events.FaultEvent; import mx.rpc.events.ResultEvent; [Bindable] public var dbl0:Number; //-----------Infinite Loop, Works fine if condition = i<2000------------------------ public function clientMonitor1():void{ for(var i:int = 0; ; i++){ clientMonitor(); } } public function clientMonitor():void{ var callResp:CallResponder = new CallResponder(); callResp.addEventListener(ResultEvent.RESULT, monitorResult); callResp.addEventListener(FaultEvent.FAULT, monitorFault); callResp.token = plcServiceBean.getMonitorData(); } public function monitorResult(event:ResultEvent):void{ var arr:ArrayCollection = event.result as ArrayCollection; dbl0 = arr[0].value as Number; } protected function monitorFault(event:FaultEvent):void{ Alert.show(event.fault.faultString, "Error while monitoring Data "); } ]]> </fx:Script> <fx:Declarations> <plcservicebean:PlcServiceBean id = "plcServiceBean" showBusyCursor="true" fault="Alert.show(event.fault.faultString + '\n' + event.fault.faultDetail)" /> </fx:Declarations> <mx:Form x="52" y="97" label="Double"> <mx:FormItem label = "getMonitorValue"> <s:TextInput id = "getIndex0" text = "{dbl0}"/> </mx:FormItem> </mx:Form> </s:Group>

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  • How to get this JavaScript class member to return a value?

    - by George Edison
    I have a JavaScript class that has a method: function someClass() { this.someMethod = someClass_someMethod; } function someClass_someMethod() { // make an AJAX request } The problem is that someClass_someMethod() needs to return the value of the AJAX request. I'm using jQuery's $.getJSON() method to fetch the data. The data needs to be returned but it seems the only way to get the data is through a callback. How can this be done?

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  • Passing enums to functions in C++

    - by rocknroll
    Hi all, I have a header file with all the enums listed (#ifndef #define #endif construct has been used to avoid multiple inclusion of the file) that I use in multiple cpp files in my application.One of the enums in the files is enum StatusSubsystem {ENABLED,INCORRECT_FRAME,INVALID_DATA,DISABLED}; There are functions in the application delcared as ShowStatus(const StatusSubsystem&); Earlier in the application when I made calls to the above function like ShowStatus(INCORRECT_FRAME); my application used to compile perfectly. But after some code was added The compilation halts giving the following error: File.cpp:71: error: invalid conversion from `int' to `StatusSubsystem' File.cpp:71: error: initializing argument 1 of `void Class::ShowStatus(const StatusSubsystem&) I checked the code for any conflicting enums in the new code and it looked fine. My Question is what is wrong with the function call that compiler shows as erroneous? For your reference the function definition is: void Class::ShowStatus(const StatusSubsystem& eStatus) { QPalette palette; mStatus=eStatus;//store current Communication status of system if(eStatus==DISABLED) { //select red color for label, if it is to be shown disabled palette.setColor(QPalette::Window,QColor(Qt::red)); mLabel->setText("SYSTEM"); } else if(eStatus==ENABLED) { //select green color for label,if it is to be shown enabled palette.setColor(QPalette::Window,QColor(Qt::green)); mLabel->setText("SYSTEM"); } else if(eStatus==INCORRECT_FRAME) { //select yellow color for label,to show that it is sending incorrect frames palette.setColor(QPalette::Window,QColor(Qt::yellow)); mLabel->setText("SYSTEM(I)"); } //Set the color on the Label mLabel->setPalette(palette); } A strange side effect of this situation is it compiles when I cast all the calls to ShowStatus() as ShowStatus((StatusSubsystem)INCORRECT_FRAME); Though this removes any compilation error, but a strange thing happens. Though I make call to INCORRECT_FRAME above but in function definition it matches with ENABLED. How on earth is that possible? Its like while passing INCORRECT_FRAME by reference, it magically converts to ENABLED, which should be impossible. This is driving me nuts. Can you find any flaw in what I am doing? or is it something else? The application is made using C++,Qt-4.2.1 on RHEL4. Thanks.

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  • Onmousemove event not working in chrome

    - by user1316760
    I have coding for onmousemove event working well in firefox and IE......but not in chrome var mouse; function storeMouse(e) { if (!e) e = window.event; mouse = { clientX: e.clientX, clientX: e.clientY }; } function test(e) { alert(mouse.clientX); if (mouse.clientX < 150) { var agree = confirm("Are you sure to leave this page"); if (!agree) { return false; } else { } } } Can anyone help me.

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  • how to organize all JQuery scripts

    - by Abu Hamzah
    i am using half dozen jquery plugins and plus my own jquery scripts and in every script i have this code: $(document).ready(function() { .... } what is the best way of organizing all the scripts in one centeralized location and instead of having multiple times $(document).ready(function() everywhere in the script. thoughts?

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  • onchange of FilteringSelect do not work

    - by vusan
    Same code I'm using of dojo documentation just downloaded code work fine but onchange event do not fire on my project. I have make it to work by firing onblur onBlur: function(){alert(3)} What thing may cause onchange event not fire? var filteringSelect = new FilteringSelect({ id: "stateSelect", name: "state", value: "CA", store: stateStore, searchAttr: "name", onChange: function(){alert(3)} }, "stateSelect");

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  • Quick question about jQuery selector content efficiency

    - by serg
    I am loading HTML page through ajax and then doing a bunch of searches using selectors: $.ajax({ ... dataType: "html", success: function(html) { $("#id1", html); $(".class", html); //... } } Should I extract $(html) into a variable and use it as a content, or it doesn't matter (from performance point)? success: function(html) { $html = $(html); $("#id1", $html); $(".class", $html); //... }

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  • Publishing/subscribing multiple subsets of the same server collection

    - by matb33
    How does one go about publishing different subsets (or "views") of a single collection on the server as multiple collections on the client? Here is some pseudo-code to help illustrate my question: items collection on the server Assume that I have an items collection on the server with millions of records. Let's also assume that: 50 records have the enabled property set to true, and; 100 records have the processed property set to true. All others are set to false. items: { "_id": "uniqueid1", "title": "item #1", "enabled": false, "processed": false }, { "_id": "uniqueid2", "title": "item #2", "enabled": false, "processed": true }, ... { "_id": "uniqueid458734958", "title": "item #458734958", "enabled": true, "processed": true } Server code Let's publish two "views" of the same server collection. One will send down a cursor with 50 records, and the other will send down a cursor with 100 records. There are over 458 million records in this fictitious server-side database, and the client does not need to know about all of those (in fact, sending them all down would probably take several hours in this example): var Items = new Meteor.Collection("items"); Meteor.publish("enabled_items", function () { // Only 50 "Items" have enabled set to true return Items.find({enabled: true}); }); Meteor.publish("processed_items", function () { // Only 100 "Items" have processed set to true return Items.find({processed: true}); }); Client code In order to support the latency compensation technique, we are forced to declare a single collection Items on the client. It should become apparent where the flaw is: how does one differentiate between Items for enabled_items and Items for processed_items? var Items = new Meteor.Collection("items"); Meteor.subscribe("enabled_items", function () { // This will output 50, fine console.log(Items.find().count()); }); Meteor.subscribe("processed_items", function () { // This will also output 50, since we have no choice but to use // the same "Items" collection. console.log(Items.find().count()); }); My current solution involves monkey-patching _publishCursor to allow the subscription name to be used instead of the collection name. But that won't do any latency compensation. Every write has to round-trip to the server: // On the client: var EnabledItems = new Meteor.Collection("enabled_items"); var ProcessedItems = new Meteor.Collection("processed_items"); With the monkey-patch in place, this will work. But go into Offline mode and changes won't appear on the client right away -- we'll need to be connected to the server to see changes. What's the correct approach?

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  • Jquery ajax POST label/value pair

    - by aus_fas
    I want to pass label/value pair in Ajax .POST but cannot find any solution. Any help please. $.ajax({ url:"allfields.php", type:"POST", // dataType:"json", data: $("#frmRequest").serialize(), success: function(msg){ alert("Form Submitted: "+ msg); return msg; }, error: function() { alert('Error occured'); } });

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  • C++ compile time purity checks?

    - by anon
    Is it possible to specify compile time "purity" checks in C++? I.e.: this function does not read from anything other than it's arguments this function does not write to anything; it only returns the return value

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  • Google map "zoomend" event issue

    - by ebae
    On my html page, I have a google map with a few markers. I want all the markers to be cleared once the zoom is changed on the map with the following code. GEvent.addListener(map, "zoomend", function() { map.clearOverlays(); } But what happens is actually the markers are removed by the "clearOverlays()" function, but then they appear again. Any idea why? Where is it going after the event is handled?

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  • event .split() no response

    - by klox
    i've been modified the code like below function addtext() { var barCode = this.(text); $("#model").change(function() { barCode = $this.val(); var data = barCode.split(""); $("#model").val(data[0]); $("#serial").val(data[1]); }); }; but..still not separate..please help.

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  • jQuery - Form input return confirm to delete

    - by bruno
    hello guys. I struggled a lot before posting here :) now, I want to replace my default javascript confirmation for deleting a file. I saw a lot of examples here, but no example with form input. Now I have his form: <form action="delete.php" method="post"> <input type="hidden" name="id" value="<{$pid}>" /> <input type="hidden" name="picture" value="<{$lang_del_pic}>" /> <input type="image" src="<{xoImgUrl}>img/del-icon.gif" width="16" height="16" align="bottom" border="0" alt="Delete media" name="pictured" value="<{$lang_del_pic}>" onclick="javascript: return confirm('<{$lang_confirm_del}>');" /> </form> Now, I did everything, I have this div: <div id="dialog-confirm" title="Empty the recycle bin?"> <p><span class="ui-icon ui-icon-alert" style="float:left; margin:0 7px 20px 0;"></span>These items will be permanently deleted and cannot be recovered. Are you sure?</p> </div> this javascript: <script type="text/javascript"> $(document).ready(function() { $("#dialog").dialog({ autoOpen: false, modal: true }); }); $(".confirmLink").click(function(e) { e.preventDefault(); var targetUrl = $(this).attr("href"); $("#dialog").dialog({ buttons : { "Confirm" : function() { window.location.href = targetUrl; }, "Cancel" : function() { $(this).dialog("close"); } } }); $("#dialog").dialog("open"); }); </script> and this new form: <form name="dialog-confirm" id="dialog-confirm" method="post"> <input type="hidden" name="id" value="<{$pid}>" /> <input type="hidden" name="picture" value="<{$lang_del_pic}>" /> <input type="image" src="<{xoImgUrl}>img/del-icon.gif" width="16" height="16" align="bottom" border="0" alt="Delete media" name="pictured" value="" id="opener" /> </form> On press, I call successfuly the jQuery modal diolog, and everything works, but somehow, when I press 'delete all' the script tells me - "the script is called without the necessary parameters" Now I guess I am failig to send the pic ID to be deleted with the jQuery, .. but do not know how to fix it. Any ideas ?

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  • Search backward through a string using a regex (in Python)?

    - by John Mulder
    I'm parsing some code and want to match the doxygen comments before a function. However, because I want to match for a specific function name, getting only the immediately previous comment is giving me problems. Is there a way to search backward through a string using the Python Regex library? Is there a better (easier) approach that I'm missing?

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  • localStorage not working in IE9 and Firefox

    - by maha
    I am working with localStorage. My code is perfectly working in Chrome, but not in IE9 and Firefox. Here is the code: document.addEventListener("DOMContentLoaded", restoreContents, false); document.getElementsByTagName("body")[0].onclick=function(){saveContents('myList','contentMain', event, this);}; function amIclicked(e, eleObject) { alert("amIClicked"); e = e || event; var target = e.target || e.srcElement; alert("target = " + target.id); if(target.id=='pageBody' || target.id=='Save') return true; else return false; } function saveContents(e, d, eveObj, eleObject) { //alert("saveContents"); if (amIclicked(eveObj, eleObject)) { var cacheValue = document.getElementById(e).innerHTML; var cacheKey = "key_" + selectedKey; var storage = window.localStorage; //alert ("cacheKey = " + cacheKey + " ,cacheValue = " + cacheValue); if(typeof(Storage)!=="undifined"){ localStorage.setItem("cacheKey","cacheValue"); } //alert ("Saved!!"); var dd = document.getElementById(d); //document.getElementById("contentMain").style.display == "none"; dd.style.display = "none"; } } function restoreContents(e,k) { //alert("test"); if(k.length < 1) { return; } var mySavedList = localStorage["key_" + k]; if (mySavedList != undefined) { document.getElementById(e).innerHTML = mySavedList; } } <a onclick="ShowContent('contentMain','myList','Sample_1'); return true;" href="#" >Sample 1</a><br/><br/> <a onclick="ShowContent('contentMain','myList','Sample_2'); return true;" href="#" >Sample 2</a><br/><br/> <div style="display:none;display:none;position:absolute;border-style: solid;background-color: white;padding: 5px;"id="contentMain"> <ol id="myList" contenteditable="true"> <li>Enter Content here</li> </ol> <!--<input id="editToggleButton" type="button" value="Edit"/>--> </div> When I debugging in Iexplore Iam getting the error as SCRIPT5007: Unable to get value of the property 'length': object is null or undefined sample_1.html, line 157 character 3 Thanks

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  • How to open file and Directory in QT

    - by sijith
    Hi, I want to open Directory and file using the same function. Is it possible to do the same in QT. I used QString directory = QFileDialog::getExistingDirectory(this, tr("Open Directory"), "", QFileDialog::ShowDirsOnly | QFileDialog::DontResolveSymlinks); Here i can open only directory. How to open both file and directory using single function

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  • 'EXC_BAD_ACCESS' When trying to access a variable?

    - by Nick Brooks
    I get an 'EXC_BAD_ACCESS' error when trying to access variable in a function other than the one it was set in: NSLog(@"Commening search (%@)",sessionID); // This causes it The variable is set in the 'awakeFromNib' function: //Retrieve Session-ID sessionID = [self getSessionID]; The variable itself is defined in the header: NSString *sessionID;

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