tagged [callback]
Determine what attributes were changed in Rails after_save callback?
Determine what attributes were changed in Rails after_save callback? I'm setting up an after_save callback in my model observer to send a notification only if the model's attribute was changed from fa...
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- 12 Aug at 05:52
Observable for a callback in Rx
Observable for a callback in Rx I'm looking for an elegant way to create an `Observable` from a plain callback delegate with Rx, something similar to [Observable.FromEventPattern](http://msdn.microsof...
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- 10 Jul at 11:42
WCF Callback Channel gets disposed prematurely?
WCF Callback Channel gets disposed prematurely? My application is using the net.tcp WCF service with a callback channel. For some reason I'm not able to send callbacks on event. Here's what I'm doing ...
How to Define Callbacks in Android?
How to Define Callbacks in Android? During the most recent Google IO, there was a presentation about implementing restful client applications. Unfortunately, it was only a high level discussion with n...
nodejs - first argument must be a string or Buffer - when using response.write with http.request
nodejs - first argument must be a string or Buffer - when using response.write with http.request I'm simply trying to create a node server that outputs the HTTP status of a given URL. When I try to fl...
Defining TypeScript callback type
Defining TypeScript callback type I've got the following class in TypeScript: I am using the class like this: The code works, so it
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- 30 Oct at 10:46
How should I call 3 functions in order to execute them one after the other?
How should I call 3 functions in order to execute them one after the other? If I need call this functions one after other, I know in jQuery I could do something like: ``` $('#art1').animate({'width':'...
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- 27 Aug at 08:8
(How) is it possible to bind/rebind a method to work with a delegate of a different signature?
(How) is it possible to bind/rebind a method to work with a delegate of a different signature? I'm a c++ developer having used signals & slots in c++ which to me seems to be analogous to delegates in ...
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- 26 Jan at 18:48
Rails: #update_attribute vs #update_attributes
Rails: #update_attribute vs #update_attributes Both of these will update an object without having to explicitly tell ActiveRecord to update. Rails API says: > update_attributeUpdates a single attribut...
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- 16 Apr at 09:51
Stopping timer in its callback method
Stopping timer in its callback method I have a System.Threading.Timer that calls its appropriate event handler (callback) every . The method itself is and can sometimes take . Thus, I want to stop the...
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- 9 Nov at 07:31
WCF Windows Service - Long operations/Callback to calling module
WCF Windows Service - Long operations/Callback to calling module I have a Windows Service that takes the name of a bunch of files and do operations on them (zip/unzip, updating db etc). The operations...
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- 8 Mar at 09:16
How to refactor Node.js code that uses fs.readFileSync() into using fs.readFile()?
How to refactor Node.js code that uses fs.readFileSync() into using fs.readFile()? I'm trying to get my head around synchronous versus asynchronous in Node.js, in particular for reading an HTML file. ...
Passing a C# callback function through Interop/pinvoke
Passing a C# callback function through Interop/pinvoke I am writing a C# application which uses Interop services to access functions in a native C++ DLL. I am already using about 10 different function...
Java executors: how to be notified, without blocking, when a task completes?
Java executors: how to be notified, without blocking, when a task completes? Say I have a queue full of tasks which I need to submit to an executor service. I want them processed one at a time. The si...
Bypass popup blocker on window.open when JQuery event.preventDefault() is set
Bypass popup blocker on window.open when JQuery event.preventDefault() is set I want to show a JQuery dialog conditionally on click event of an hyperlink . I have a requirement like on condition1 open...
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- 1 Mar at 10:49
Multithreading for callback function in C++
Multithreading for callback function in C++ Im implementing a chat application using Jabber/XMPP and gloox framework which should send and receive messages concurrently in Ubuntu Linux. My current cod...
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- 4 Jan at 14:55
Where to define callback for Task based asynchronous method
Where to define callback for Task based asynchronous method Following [this question](https://stackoverflow.com/questions/8240316/advantages-of-using-standard-net-async-patterns), I am trying to imple...
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- 23 May at 12:17
How to force Sequential Javascript Execution?
How to force Sequential Javascript Execution? I've only found rather complicated answers involving classes, event handlers and callbacks (which seem to me to be a somewhat sledgehammer approach). I th...
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- 23 Jun at 22:3
Callback to update GUI after asynchronous ServiceStack web service call
Callback to update GUI after asynchronous ServiceStack web service call I need to refresh a `ListBox` in my GUI once the asynchronous call to a web service has successfully returned. It is not so simp...
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- 15 Nov at 21:44
C++ callback using class member
C++ callback using class member I know this has been asked so many times, and because of that it's difficult to dig through the cruft and find a simple example of what works. I've got this, it's simpl...
Executing async code on update of state with react-hooks
Executing async code on update of state with react-hooks I have something like: ``` const [loading, setLoading] = useState(false); ... setLoading(true); doSomething(); //
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- 20 Jul at 18:22
How to reference an event in C#
How to reference an event in C# I have the following class, which has one public event called `LengthChanged`: ``` class Dimension { public int Length { get { return this.length; ...
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- 25 Feb at 20:22
Pass variable to function in jquery AJAX success callback
Pass variable to function in jquery AJAX success callback I am trying to preload some images with a jQuery AJAX call, but am having real problems passing a (url) string into a function within the succ...