Callback is facility to save a piece of code so that it may be invoked later in the current environment (Typically in response to an event)

learn more… | top users | synonyms

-1
votes
0answers
15 views

Return a list of data made from an Ajax/HTTP in the order they were called [migrated]

Is there a way to get your data back in the order in which you called your AJAX requests, without using promises, also no synchronous code or jQuery, but simply pure javascript? I'm quite familiar ...
2
votes
0answers
80 views

C++ UDP server for a game

I broke my server into two classes, a general server class and a client session class. I know the code isn't documented in the header, but I am more interested in the design of the server/session ...
2
votes
1answer
22 views

Parallel computation to be merged, depending on single call

Steps: Get AMOUNT from a call to API endpoint /a, e.g. AMOUNT == 5 (in the code it is set ...
4
votes
1answer
113 views

PHP Route class

I was trying to keep it SRP. I'm new into PHP OOP and I'm wondering how I can make it better. Route.php ...
0
votes
0answers
23 views

Generic Timeout Handler

In a frontend Javascript project I have to implement a generic timeout mechanism for a set of asynchronous tasks that the program needs to perform. These are the conditions: The tasks are functions ...
6
votes
1answer
198 views

C++14 Event System

I've created a simplified event system for C++14. The code is commented, so it shouldn't be hard to read. There's also a simple usage scenario below. It is still a work in progress and uses some ...
4
votes
2answers
59 views

C++ EventHandler class, invoking & arguments

This is my EventHandler class, which is extremely simple and can be used on lambdas and similar: ...
6
votes
1answer
73 views

Rate limiting function calls

I wanted to write a function that when applied to another would rate limit it, but permit all calls to eventually make it through. Comments and criticism welcome. ...
2
votes
1answer
43 views

Handling success and failure when retrieving product information

I've got an Angular controller where I have two functions that are repeated inside two functions: ...
0
votes
1answer
150 views

Operating on a list of files using recursion

I'm starting just now with CoffeeScript and I found out that I can't solve problems like looping and recursives with just one line. I would like to improve the code that I just wrote using built-in ...
5
votes
1answer
49 views

Process chain approach

I've been researching about JavaScript and jQuery function chaining and different callback techniques. I am trying to create a very generic code that allows chaining, and in a way that I may create ...
11
votes
1answer
200 views

Callback in Linux kernel driver in order to hide device's low-level protocol

I'm am writing a Linux kernel driver for HD44780 LCDs connected via I2C bus. In my last change I tried to decouple low-level code (which talks to the device via I2C) from device's logic (printing ...
1
vote
1answer
82 views

Taking and saving pictures using promises

I have the following 4 functions that work, however, I am sure that utilising promises will improve my code. I just find them so confusing. ...
11
votes
2answers
2k views

C++ Observer design pattern implementation

I'm using the Observer design pattern in order to manage events in the game I'm currently developing. I based myself on the implementation demonstrated here but improved it in order to ease its use. ...
5
votes
1answer
360 views

Avoiding callback chaining in authenticator

I'm developing an iOS Application in Swift that uses Google Cloud Endpoints as its backend. For now, I've just written the code for the user to login with his Gmail account and I've refactored it as ...
1
vote
1answer
163 views

Handling callbacks when doing async programming and dealing with scope

I'm using HapiJS to create a little backend for my side-project. In grabbing RSS feeds, I want to loop through my list of website URLs, grab the correct RSS links in the ...
5
votes
2answers
481 views

Synchronization in an event manager

I'm working on an event manager, and I am wanting it to be a tool developers use. It is lightweight and it uses annotations to register events. I've tried to set up ...
4
votes
4answers
51 views

Indenting a function to recursively find filenames

I wrote this function that recursively traverses a given directory resolves the relative file-names to absolute file-names and yields the resolved file-name if it matches a given pattern. You can ...
2
votes
1answer
100 views

Conditional callback for asynchronous file copy

I'm trying to figure out the most elegant solution to do the following asynchronously using JavaScript (specifically node): Given a destination file name, check if it is a directory If it is a ...
7
votes
2answers
2k views

C-ifying a capturing lambda

What do you think of this code? ...
2
votes
1answer
368 views

Inactivity Timeout

I made this piece of code to detect inactivity on different aspects of my app. It is part of a set of pieces to analyze user behavior. Not saying it's ugly, but good looking constructive criticism to ...
1
vote
0answers
55 views

Using an asynchronous function without directly using its callback

I hate functions and re-writing callbacks by "intercepting" them and passing the original along. This is simple: it uses an existing function, exec, and doesn't ...
5
votes
1answer
594 views

Callback functions to select the tab to the left in Google Chrome

I'm a JavaScript rookie, but I wrote a JavaScript function as part of a Chrome extension that will activate the tab to the left of the currently active tab. The function is pretty ugly, but I couldn't ...
5
votes
1answer
56 views

Organize JavaScript for video player controls

I have a small piece of code, and the problem is that I don't know how to organize it. There are tons of tutorials about JS code organization but I feel that those are for large scale apps. Also, I'm ...
2
votes
1answer
43 views

The best way to place callback definition [closed]

In JavaScript we can write callback definition in many different ways: Definition after usage: ...
1
vote
3answers
72 views

Type determined return values

I have the following js code: ...
2
votes
1answer
460 views

Angular callback scope.apply

Usually the socket.io's on method is like this: socket.on('/msg', function(data){}); But in Angular that callback has to be ...
1
vote
1answer
3k views

Using callbacks in a Restangular service

I have a project built with AngularJS and using Restangular in my services to handle API requests. The problem is I haven't found a good way to test the services which I think has turned into a bit of ...
2
votes
1answer
108 views

Observable storage - revised

Previous question: JavascriptObservable Storage The idea is to have some storage interface that exists of different buckets - known as Eagles: ...
8
votes
2answers
219 views

Concurrent Task Waiter 2

This is an iteration of my previous question: Concurrent Task Waiter Summary from before: I have some code designed to simplify managing multiple asynchronous operations. The code creates ...
1
vote
1answer
121 views

Concurrent Task Waiter

I have some code designed to simplify managing multiple asynchronous operations. The code creates callback actions that, when executed by the asynchronous operation, track which asynchronous methods ...
1
vote
1answer
40 views

JavaScript and callback: apply an action on each element of a callback input

I'm quite new to js. I even don't know how to call this problem: apply an action on each element of a callback input, but the elements are actually an output.. I crash a lot on this situation: I have ...
1
vote
1answer
55 views

Is this a proper callback implementation in Java?

I have a code which I believe is callback implementation. Can you please provide your more experienced opinions on whether this is a good way to ...
6
votes
1answer
528 views

MVC Model validation callback

I have made a simple MVC framework of my own for my personal website to learn a thing or two about how this whole thing even works. I think I've got the idea, but there's one thing I'm not sure about. ...
3
votes
1answer
124 views

Notify Property Changed

Inspired by a SO post, just as an exercise, I tried to implement a way of notifying a consumer of a class about whether a property on an object has changed or not. I'm not attempting to use this in ...
4
votes
1answer
172 views

A method for events callback with the correct “this”

What do you think of the following "utility" : ...
2
votes
1answer
357 views

Module pattern callback implementation

I'm rewriting a simple app using HTML/CSS/JavaScript that creates animations with images using intervals, and there's a bunch of buttons that controls these animations. It's scaling and becoming ...
3
votes
2answers
1k views

Load images, manipulate DOM, store/retrieve data using localStorage

I wrote a little code sample which: load images manipulate DOM (replace images) store/retrieve related data using localStorage ...
3
votes
1answer
144 views

Three implementations of observable objects

I wonder, what might be the best (most pythonic) way of implementing multiple observerables in Python. There are multiple objects, which should be able to register themselves at one or multiple ...
2
votes
1answer
137 views

Can this code utilizing promises be written more succinctly?

I've written the following code to get all .txt files in a directory and read+delete them, repeating every 15 seconds. ...
1
vote
2answers
510 views

JavaScript parameters - best practices for settings object/callback

I have the following function which runs as expected and is defined in the window object: ...
6
votes
2answers
4k views

Callback on AlertDialog

I am using an AlertDialog in Android, asking the user for some input. I would like do run some code when the user has finished entering her input. Since an ...
10
votes
1answer
234 views

Pledge: Promise-like entities design goals experiment

Background I was writing a promises/a+ implementation, just for fun. About halfway through I decided it wasn't that fun after all, so I decided to do something a little different. Thinking of ...
4
votes
2answers
4k views

Generic callback object, but I need the type parameter inside methods

Inside my android app, I currently have methods that look like below code. Since they all need a callback object that basically does the same thing and I would like to try to eliminate the duplicated ...
6
votes
4answers
348 views

Identify Java Callback

I have this common design in my application: ...
6
votes
2answers
65 views

Alternate way for comparison call back function?

I'm doing a programming practice problem and was wondering if someone can suggest a better to create/setup the call back for the comparison function. I have the following classes: ...
7
votes
1answer
119 views

Requesting Resources Until Exhaustion

When an API has a 'next' feature, I use the following pattern to obtain all the results: ...
3
votes
1answer
129 views

Using jquery Callbacks.fire method as a event handler

So I've got a jquery project where I'm using an external class that has callback style events. Meaning, it has an "onSave" property that takes one function. However, I need to more than one other ...
4
votes
0answers
588 views

Aysnc call back to UI Thread

My main DLL is a .Net one that has an async running method and fires an event when it's done: ...
5
votes
1answer
523 views

Hooking with Python3 Decorators

I wrote this prototype after reading the Wikipedia article on hooking. I didn't bother to read any of the code examples listed there because, well, I just didn't. I don't have a good excuse. The ...