This is my code... var _before = function () { for (var i = 0; i <= 10000; i++) { console.log(i); } }; var _appear = function () { console.log('i am in the middle of it'); }; var _after = function () { console.log('all done!'); }; jQuery.fn.doSomething = function() { this.click(function() { _before(); ...
In Parallel Python it has something in the submit function called a callback (documentation) however it doesn't seem to explain it too well. I've posted on their forum a couple days ago and I've not received a response. Would someone explain what a callback is and what it's used for? Thank you. ...
I have a publish/subscribe scenario in WCF using net.tcp and Duplex callbacks. I have a number of clients that subscribe to the service, and this works fine. However, sometimes a client will close without unsubsribing (Client computer goes to sleep, computer crashes, network connection is aborted, etc..), this causes an exception to be...
I've been playing around with PHP Streams and have been experimenting by beginning to write the class shown here. The PHP docs are bit lean in this area to say the least. I'm having a difficult time with getting my stream context to invoke the callback method specified. If I use a function like file_get_contents or fopen to connect to a...
Hi All, I would like to call @records.collect{|r| r.set_some_virtual_attribute(@context)} before rendering an activescaffold index view, but if I do this : controller FooController < ApplicationController before_filter :change_things, :only => :index active_scaffold :foos protected def change_things @records.collect...
Update: The code below does indeed work as expected, and accomplishes the code I wanted. My confusion was in understanding what I had in my markup when writing the code below - after giving my markup a second look, I realized my code worked perfectly. I've provided my answer below for all who are interested in the more thorough explana...
So I am new to .net and c++ and am in need of a "library" of functions that can be called and also events that are raised in the main application that is using the library. I have a C++ library (.lib) that I want to add another layer (wrapper) on top of it and only expose a few functions and events for the main application. I don't kno...
I get confused with some terms while reading MSDN documents and code samples. What are callbacks in C#? In particular, what are synchronous and asynchronous callbacks ? Please explain these from a layman's point of view. Also, please explain the IAsyncResult interface. How can we implement it? (with very simple example) Thanks in adv...
Hi I've written a simple callback function which isn't working. My other callbacks (which are in the same library file) work fine so I guess the problem has to do with my code. The parameter passed in the callback function takes the form of a chunk of PHP which is eval()'ed to form part of an 'if()' statement in the function itself. H...
Hi, I'm using jquery validate to validate my forms. I want to show a text field that is hidden when my This field is valid. That is i want call a method when a text field is valid(on text field change, before clicking submit). Any ideas? ...
Hi All, I have some submit buttons that are defined in the following manner: <input id="add_200,231" type="submit" onclick="updatePage(401,27371,200,231)" value="Add"/> The corresponding javascript function referenced in "onclick" looks like this : function updatePage(slac,sci,tlac,tci) { var url = '/neighbouring?.state=add_cell&so...
Hello. Today I have a WCF question, though it probably pertains to other Networking models in .NET as well. I have a WCF service that exposes a Send(Message) OperationContract, which is OneWay = true. Now this service has a callback channel to return Messages to the client. Anyway I am trying (successfully) to call this Send method fr...
I have a custom Menu class written in C++. To seperate the code into easy-to-read functions I am using Callbacks. Since I don't want to use Singletons for the Host of the Menu I provide another parameter (target) which will be given to the callback as the first parameter (some kind of workaround for the missing "this" reference). Regis...
I currently have a simple form that when you click the "save" button will persist it to the database. I would like to use JQuery to do the callback for me and popup a "Save completed" div window/div of some sort. My only problem is how do I call the btnSave_Click() event from JQuery? If I use PageMethods the method would have to be st...
Hi Guys, I have buttons defined in the following manner: <input id="405,23272-200,233" class="addbutton" type="submit" value="Add"/> and some javascript to update parts of the page on a button being clicked: document.observe('dom:loaded', function () { $$('.addbutton').each(function(item) { Event.observe(item, 'click'...
I'm migrating my old blog posts into my new Rails blog, and I want their updated_at attribute to match the corresponding value on my old blog (not the date they were migrated into my new Rails blog). How can I do this? When I set updated_at manually it gets overridden by the before_save callback. ...
here is the code ob_start(array(&$dispatcher, 'outputCallback')); include($file); ob_end_flush(); function outputCallback($string) { if(ob_get_level() == 1) { $static =& ParserStatic::getInstance(); return $static->insertToppings($string); } return false; } the problem is when i return $string it b...
We are using a WCF service with a Callback contract. Communication is Asynchronous. The service contract is defined as: [ServiceContract(Namespace = "Silverlight", CallbackContract = typeof(ISessionClient),SessionMode = SessionMode.Allowed)] public interface ISessionService With a method: [OperationContract(IsOneWay = true)] vo...
I have some javascript code that creates an img tag with a mouseover callback, and adds the img tag to the page. The problem is that a javascript syntax error happens (in the Firefox Console) whenever the callback is invoked. This code demonstrates the problem... var imgUrl = 'http://sstatic.net/so/img/logo.png'; var ...
Hey guys, I'am really confused and don't know how to get on, probably you can help me :) I'e made an html-page with an menu which loads external content into an div(all done with jquery and ajax-load). If i want to add a second function nothing happens and i'am not sure about the nesting, wheather it's right or not. Here are two func...