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  • Using WebSockets in a C# Web Application?

    - by sixones
    I know its possible to use WebSockets within C# using a console application running along side the web application but Im wondering if its possible to use the requests on the C# web application to create the WebSockets. I've been looking through ASP.Net and Im starting to think it wont be possible unless I use straight up C# and create my own HTTP server and then use the same socket object to generate Web Sockets (similar to the way Node.js and Socket.IO work). Any thoughts on ways to include WebSockets on a C# web application without having multiple servers / projects?

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  • How can i edit OSGi bundles manifest file in Netbeans 6.9?

    - by Deniz Acay
    I'm using Netbeans 6.9 RC2 and Maven OSGi Bundle project template. Actually i dont want to test my bundles in Netbeans environment so i copy the jar file to the OSGi container directory and install it from command line. But when i want to see its headers from OSGi console, i see a lot of Netbeans related unnecessary stuff. Is it possible to edit the contents of the manifest file in Netbeans?

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  • What are the limitations of a STA thread in compare to MTA threads ?

    - by Xaqron
    If we make a thread STA like this: Thread.SetApartmentState(STA); then it cannot run code marked with [MTAThread] attribute. We have seen [STAThread] in windows and console applications but I have never seen code with [MTAThread] attribute and don't know which .NET libraries use this attribute. My question is what are the limitations of a thread with apartment state set to STA, in compare to threads with MTA apartment state (natural .NET threads) ?

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  • Virtual member call in a constructor when assigning value to property

    - by comecme
    I have an Abstract class and a Derived class. The abstract class defines an abstract property named Message. In the derived class, the property is implemented by overriding the abstract property. The constructor of the derived class takes a string argument and assigns it to its Message property. In Resharper, this assignment leads to a warning "Virtual member call in constructor". The AbstractClass has this definition: public abstract class AbstractClass { public abstract string Message { get; set; } protected AbstractClass() { } public abstract void PrintMessage(); } And the DerivedClass is as follows: using System; public class DerivedClass : AbstractClass { private string _message; public override string Message { get { return _message; } set { _message = value; } } public DerivedClass(string message) { Message = message; // Warning: Virtual member call in a constructor } public DerivedClass() : this("Default DerivedClass message") {} public override void PrintMessage() { Console.WriteLine("DerivedClass PrintMessage(): " + Message); } } I did find some other questions about this warning, but in those situations there is an actual call to a method. For instance, in this question, the answer by Matt Howels contains some sample code. I'll repeat it here for easy reference. class Parent { public Parent() { DoSomething(); } protected virtual void DoSomething() {}; } class Child : Parent { private string foo; public Child() { foo = "HELLO"; } protected override void DoSomething() { Console.WriteLine(foo.ToLower()); } } Matt doesn't describe on what error the warning would appear, but I'm assuming it will be on the call to DoSomething in the Parent constructor. In this example, I understand what is meant by a virtual member being called. The member call occurs in the base class, in which only a virtual method exists. In my situation however, I don't see why assigning a value to Message would be calling a virtual member. Both the call to and the implementation of the Message property are defined in the derived class. Although I can get rid of the error by making my Derived Class sealed, I would like to understand why this situation is resulting in the warning.

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  • Which OS should I chose for my VPS?

    - by Camran
    I am about to order a virtual private server now, and have no experience in any Linux OS whatsoever. I am a fast learner however... My VPS provider provides these OS: Ubuntu 8.04 LTS Ubuntu 8.04 LTS 64-bit Ubuntu 9.10 Ubuntu 9.10 64-bit Debian 5.0 Gentoo Gentoo 64-bit Ubuntu 8.04 LTS + Ruby on rails I don't know what these are, however I have heard about Ubuntu alot, and know there is alot of information about it on the Internet. Will it make any difference which one I chose? I plan on running a classifieds website, which uses PHP, MySql, Java (for Solr) and the usual standard stuff (HTML, javascript...). Which should I chose? And what is the next step after chosing one? Thanks

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  • How can I test potentially browser crashing javascript

    - by yaya3
    I've been having a crack at some of the problems over at http://projecteuler.net/ with JavaScript. I've been using a simple html page and running my code in script tags so I can log my results in the browsers' console. When experimenting with loops I sometimes cause the browser to crash. Is there a better environment for me to do this kind of development?

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  • Memory is free, but still swapping?

    - by japancheese
    Hello, I'm sure this is a pretty basic question, but I'm just trying to get a grasp of what's going on with my Ubuntu (Hardy Herron) server (running a Rails-based site). It seems that I have free memory available, yet the system is reporting that it is still swapping memory (unless I'm reading this incorrectly?). Here is the "free -m" output total used free shared buffers cached Mem: 1024 905 118 0 33 409 -/+ buffers/cache: 462 561 Swap: 2047 95 1952 Could anyone explain to me some possible reasons that it is maintaining 95mb of swap at all times (it is never less)? I'm just looking for some leads on things I could check out that would explain to me exactly how memory is utilized in Linux.

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  • logging in ad-hoc build

    - by Nava Carmon
    Hi, I have a problem with NSURLConnection in my ad-hoc build I'd like to log the problematic url. In debug version i can just output it to console. The question is how do i track it in ad-hoc? It's not about crashing, so crash logs will not help. Any ideas? TIA

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  • Powershell profile "on exit" event?

    - by poke
    I'm looking for a way to automatically do some clean up tasks when the PowerShell session quits. So for example in my profile file I start a process which needs to run in the background for quite a lot of tasks and I would like to automatically close that process when I close the console. Is there some function the PowerShell automatically calls when closing the session as it does with prompt when displaying the prompt?

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  • problem in saving drag&drop object in database

    - by Mac Taylor
    hey guys i made a script inspired by wordpress widgets'page to drag&drop blocks of my sites but problem is in saving the position after droping this is jquery code , i used to do the above target : <script type="text/javascript" >$(function(){ $('.widget') .each(function(){ $(this).hover(function(){ $(this).find('h4').addClass('collapse'); }, function(){ $(this).find('h4').removeClass('collapse'); }) .find('h4').hover(function(){ $(this).find('.in-widget-title').css('visibility', 'visible'); }, function(){ $(this).find('.in-widget-title').css('visibility', 'hidden'); }) .click(function(){ $(this).siblings('.widget-inside').toggle(); //Save state on change of collapse state of panel updateWidgetData(); }) .end() .find('.in-widget-title').css('visibility', 'hidden'); }); $('.column').sortable({ connectWith: '.column', handle: 'h4', cursor: 'move', placeholder: 'placeholder', forcePlaceholderSize: true, opacity: 0.4, start: function(event, ui){ //Firefox, Safari/Chrome fire click event after drag is complete, fix for that if($.browser.mozilla || $.browser.safari) $(ui.item).find('.widget-inside').toggle(); }, stop: function(event, ui){ ui.item.css({'top':'0','left':'0'}); //Opera fix if(!$.browser.mozilla && !$.browser.safari) updateWidgetData(); } }) .disableSelection(); }); function updateWidgetData(){ var items=[]; $('.column').each(function(){ var columnId=$(this).attr('id'); $('.widget', this).each(function(i){ var collapsed=0; if($(this).find('.widget-inside').css('display')=="none") collapsed=1; //Create Item object for current panel var item={ id: $(this).attr('id'), collapsed: collapsed, order : i, column: columnId }; //Push item object into items array items.push(item); }); }); //Assign items array to sortorder JSON variable var sortorder={ items: items }; //Pass sortorder variable to server using ajax to save state $.post('updatePanels.php', 'data='+$.toJSON(sortorder), function(response){ if(response=="success") $("#console").html('<div class="success">Saved</div>').hide().fadeIn(1000); setTimeout(function(){ $('#console').fadeOut(1000); }, 2000); }); } </script> and a simple php file but problem is its not sending data to target php file is there anything wrong with my code ?

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  • Chrome extension: sendMessage doesn't work

    - by user3334776
    I've already read the documentation from Google on 'message passing' a few times and have probably looked at over 10 other questions with the same problem and already tried quiet a few variations of most of their "solutions" and of what I have below... This is black magic, right? Either way, here it goes. Manifest File: { "manifest_version" : 2, "name" : "Message Test", "version" : "1.0", "browser_action": { "default_popup": "popup.html" }, "background": { "scripts": ["background.js"] }, "content_scripts": [ { "matches" : ["<all_urls>"], "js": ["message-test.js"] } ] } I'm aware extensions aren't suppose to use inline JS, but I'm leaving this in so the original question can be left as it was since I still can't get the message to send from the background page, When I switch from the popup to the background, I removed the appropriate lines from the manifest.json popup.html file: <html> <head> <script> chrome.tabs.query({active: true, currentWindow: true}, function(tabs) { chrome.tabs.sendMessage(tabs[0].id, {greeting: "hello", theMessage: "Why isn\'t this working?"}, function(response) { console.log(response.farewell); }); }); </script> </head> <body> </body> </html> OR background.js file: chrome.tabs.query({active: true, currentWindow: true}, function(tabs) { chrome.tabs.sendMessage(tabs[0].id, {greeting: "hello", theMessage: "Why isn\'t this working?"}, function(response) { console.log(response.farewell); }); }); message-test.js file: var Mymessage; chrome.runtime.onMessage.addListener(function(message, sender, sendResponse) { if (message.greeting == "hello"){ Mymessage = message.theMessage; alert(Mymessage); } else{ sendResponse({}); } }); No alert(Mymessage) goes off. I'm also trying to execute this after pressing a button from a popup and having a window at a specified url, but that's a later issue. The other files can be found here except with the background.js content wrapped in an addEventListener("click"....: http://pastebin.com/KhqxLx5y AND http://pastebin.com/JaGcp6tj

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  • Applying attribute to SVG using JS prompts 'this.textBox.style is undefined'. Why?

    - by Jack Roscoe
    Hi, I'm using the following code to draw an SVG text box, and then change its text anchor attribute to 'left' as it defaults to center and that's nasty. The text generates correctly, but when I add this second line I get the error 'this.textBox.style is undefined' in my error console. Here's my code: RenderTextBox:function() { // Render Text this.textBox = paper.text(this.x, this.y, this.htmlText); this.textBox.style.textAnchor="left"; } Any ideas?

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  • Programming a callback function within a jQuery plugin

    - by ILMV
    I'm writing a jQuery plug-in so I can reuse this code in many places as it is a very well used piece of code, the code itself adds a new line to a table which has been cloned from a hidden row, it continues to perform a load of manipulations on the new row. I'm currently referencing it like this: $(".abc .grid").grid(); But I want to include a callback so each area the plug-in is called from can do something a bit more unique when the row has been added. I've used the jQuery AJAX plug-in before, so have used the success callback function, but cannot understand how the code works in the background. Here's what I want to achieve: $(".abc .grid").grid({ row_added: function() { // do something a bit more specific here } }); Here's my plug-in code (function($){ $.fn.extend({ //pass the options variable to the function grid: function() { return this.each(function() { grid_table=$(this).find('.grid-table > tbody'); grid_hidden_row=$(this).find('.grid-hidden-row'); //console.debug(grid_hidden_row); $(this).find('.grid-add-row').click(function(event) { /* * clone row takes a hidden dummy row, clones it and appends a unique row * identifier to the id. Clone maintains our jQuery binds */ // get the last id last_row=$(grid_table).find('tr:last').attr('id'); if(last_row===undefined) { new_row=1; } else { new_row=parseInt(last_row.replace('row',''),10)+1; } // append element to target, changes it's id and shows it $(grid_table).append($(grid_hidden_row).clone(true).attr('id','row'+new_row).removeClass('grid-hidden-row').show()); // append unique row identifier on id and name attribute of seledct, input and a $('#row'+new_row).find('select, input, a').each(function(id) { $(this).appendAttr('id','_row'+new_row); $(this).replaceAttr('name','_REPLACE_',new_row); }); // disable all the readonly_if_lines options if this is the first row if(new_row==1) { $('.readonly_if_lines :not(:selected)').attr('disabled','disabled'); } }); $(this).find('.grid-remove-row').click(function(event) { /* * Remove row does what it says on the tin, as well as a few other house * keeping bits and pieces */ // remove the parent tr $(this).parents('tr').remove(); // recalculate the order value5 //calcTotal('.net_value ','#gridform','#gridform_total'); // if we've removed the last row remove readonly locks row_count=grid_table.find('tr').size(); console.info(row_count); if(row_count===0) { $('.readonly_if_lines :disabled').removeAttr('disabled'); } }); }); } }); })(jQuery); I've done the usually searching on elgooG... but I seem to be getting a lot of noise with little result, any help would be greatly appreciated. Thanks!

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  • Counting words in a collection using LINQ

    - by icemanind
    Guys, I have a StringCollection object with 5 words in them. 3 of them are duplicate words. I am trying to create a LINQ query that will count how many unique words are in the collection and output them to to the console. So, for example, if my StringCollection has 'House', 'Car,'House','Dog', 'Cat', then it should output like this: House -- 2 Car -- 1 Dog -- 1 Cat -- 1 any ideas on how to create a LINQ query to do this?

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  • Problem with a call button - doesn't open tel:// URL

    - by Christophe Konig
    I am trying to make a call button that will call 18 which is Fire Dept in France. So my code is : [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://18"]]; It doesn't work and I get this message in the console : < warning Ignoring unsafe request to open URL tel://18 But I saw other application that have the same button fully working ! I am trying this on the device of course. What am I missing ?

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  • JavaScript method to write to Microsoft Visual Web Developer Debugger?

    - by Josh
    I generally test my web apps with Firefox and use Firebug. I love Firebug. But when I'm testing JavaScript code in IE I use the debugger in Microsoft's Visual Web Developer 2008 Express Edition. I would love to have an equivalent to Firebug's console.log methods which would allow me to log messages to Visual Web Developer. Any way to log messages to the error list/messages list/output pane using JavaScript?

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  • delete last character UITextField

    - by Pierre
    Hi ! I have an UITextField and I just would like that every tap on a character, the first character is deleted. So just have one character in my textField every time. Moreover I would to to display every tap in the console log. Have you got an idea? Thanks!

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  • shell_exec & clamav

    - by David
    When i call this: exec("clamscan --no-summary file.php", $out, $int); with good parameters, the script doen't finish. The file is too small and in console it comand duration is 2 seconds. If i put incorrect parameter the script finished and return correcte errorcode. With shell_exec it does the same.

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  • How to properly use the .animate() function -- top

    - by sadmicrowave
    Is this the proper way to use the .animate(top) function? Positive number (animate down)-- $("div#container div#history-menu").animate({top:'180px'}, 600); Negative number (animate up)-- $("div#container div#history-menu").animate({top:'-180px'}, 600); Because I'm getting a java error in my error console that says: "error in parsing value for property 'top'. Declaration Dropped."

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  • C++ Input Stream

    - by Ilian
    I have a program that work with data which is paste to console. For example when the program is run and I paste delete 54545 add 4324 the program call delete function with parameter 54545, but wait for enter after 4324 to call second function. And I have no idea how to call it without press enter.

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  • Cannot get xmlhttprequest.responseText from JQuery

    - by Felix Guerrero
    Hi. I got this function function verify_at_bd(){ var u = "foo"; var p = "bar"; return $.post('auth.php', { name: u, password: p, mobile: '' }, function(result){ return result; },'json'); } If I do a console.log(verify_at_bd()) I'm getting an xmlhttprequest but cannot access to responseText property. I'm using header("Content-Type: application/json") into my PHP. I'm using firefox 3.6 on OS X.

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  • Computer cables explained

    - by Robert English
    I've noticed lately that places to learn about both power supply cables and also peripherals and fans aren't that easy to find. There's very little information available that gives detailed explanations of what cables are used inside a computer. What I found was very dated and often lacked detailed explanations. For someone planning out their first build it would be great way for this to be explained all in one place, like here! Important things to know about cables and connections in a computer? What are their names? Where do they connect to and why? What typical Voltages do they output? Changing Voltages for Overclocking? Please refernce PSU cables(Full modular, Modular and Non-Modular,24-pin, 20+4-pin etc), SATA(I, II, III), Molex etc. EDIT: Forgot to mention any information about PSU rails would also be appreciated :)

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  • Assigning document.getElementById to another function

    - by Andreas Grech
    I am trying to do the following in JavaScript: var gete = document.getElementById; But I am getting the following error (From FireBug's Console): uncaught exception: [Exception... "Illegal operation on WrappedNative prototype object" nsresult: "0x8057000c (NS_ERROR_XPC_BAD_OP_ON_WN_PROTO)" location: "JS frame :: http://localhost:8080/im_ass1/ :: anonymous :: line 15" data: no] Now obviously I can wrap the function as follows: var gete = function (id) { return document.getElementById(id); }; But what is the reason I'm getting the above exception when assigning the function to another name?

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