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)

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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 ...
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58 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 ...
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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. ...
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JavaScript parameters - best practices for settings object/callback

I have the following function which runs as expected and is defined in the window object: ...
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52 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 ...
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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 ...
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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 ...
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278 views

Identify Java Callback

I have this common design in my application: ...
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60 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: ...
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116 views

Requesting Resources Until Exhaustion

When an API has a 'next' feature, I use the following pattern to obtain all the results: ...
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54 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 ...
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232 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: ...
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76 views

Conditional functions or multiple similar definitions?

In my program(C++), I'm going to use callback functions to process input from the keyboard and mouse and constantly draw a scene. How these functions process information will change depending on the ...
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2answers
78 views

Is this the right way to work with callbacks and the EventEmitter?

I'm creating a small online multiplayer game in NodeJS and I'm wondering if I'm "doing it right". Here is a bit of my code: ...
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Using Callback in Codenameone native code using Java [closed]

I would like to use Callbacks in my StateMachine to fetch values from Callback class, that is set in the native Android code. Is this a right approach to create one? Do you see any issues with the ...
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Node.js Async Callback Hell

Attempting to create a final array with data pulled from 3 functions. The first two functions have all the data but then the 3rd function needs to run looping through one of the fields from function 2 ...
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96 views

Python model for a “snake”-like game

I wrote a python model for the game "snake" that I'm not really satisfied with. My intention was to separate the game logic from the drawing and input handling (which worked quite well) but I've got ...
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1answer
555 views

Node.js DynamoDB callback

I am writing an API which gets results from a DynamoDB table and puts the JSON back into the browser. The code below works and returns the desired results. However, after reading about async and ...
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3k views

Time of day based timer - run function at certain time, daily

I need to call a function exactly at certain hour, daily, my programs runs 24/7. I wrote the following timer mechanism, which generally works that way: Calculate time until hour and generate timer ...
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2answers
155 views

Please review my fast templated call back implementation

Below is the code for my templated callback implementation. Currently it works for a single parameter. One thing I was going to try and do next was increase the argument to the function from 1..N ...
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53 views

My yld NPM - callbacks/promises alternative

I'd like feedback on my callbacks/promises alternative, please. The yld repository ...
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1answer
390 views

Best practice on implementing Java Swing Callback

I guess I am at the design stage and as such dont have actual code to review so this might be the wrong place to ask this in which case let me know and happy to close/move the question I am trying to ...
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804 views

Javascript Queue for async functions

Based on the answer to my previous question on Stack Overflow, I put together the following Queue class. I realize there are already libraries out there to do this. However, I wanted to actually ...
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220 views

Prime Numbers Store

Let's say we need to create a store for selling prime numbers. Users enter the store and ask to buy a number. If the number asked is a prime number, 1.1. then it's either available for sale 1.2. ...
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1answer
108 views

my first jquery/json

This is my first use of jquery and json so would be grateful for any feedback please. Background - this is on a job listing site and it has a Linkedin apply button plugin - this provides for a ...
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2answers
259 views

Passing Context in CoffeeScript

I'm trying to migrate from JavaScript to CoffeeScript. However I'm not sure about the best way to optimize the code generated by js2coffee. Below is the original JavaScript source : ...
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1answer
223 views

Collection of Actions

I am trying to create a class to queue up a series of commands. (Not really a queue as events happen based on time). Each command has a callback (Action) that get's called. However, each Action has a ...
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635 views

Calling a function when all asynchronous calls complete

Below is a simplified version of some code I am using to execute a function after all asynchronous calls complete. Is this a reasonable piece of code? It seems to work. Nothing would break if ...
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305 views

Improve on an after_create callback with database queries - Ruby on Rails

First, some background. I have a Payment model that has_many :subscriptions. When a user pays (creates a new payment), I have an ...
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442 views

How to fix retrieval of receive data - very basic socket library in C

I am trying to learn C and have written a very basic socket library listed below. I would be interested in any general design and coding comments. Note that at this stage I am not bothered about ...
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297 views

“Piping” from a callback to an Iterator

My project has a central concept of a Callback<T> which is defined very simply: ...
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156 views

Ruby Callback System

Version 1 I need a way to store and retrieve callbacks in Ruby. So I made a Callbacks class. Any suggestions would be greatly appreciated, thank you! ...
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Efficient implemetation of AlertDialog callback in Android

One day I realised that my Android project utilizes AlertDialogs here and there in very ineffective way. The heavily duplicated portion of code looked like this (actually, copied and pasted from some ...
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Asynchronous network callback code

I did not get the job after submitting this piece of work in an interview, but I have no feedback to know what "BAD" things are inside this block of code. The requirements are: Connect to the ...
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1answer
143 views

jQuery callbacks optimization

I have a lot of repeatable blocks of code and want to optimize/simplify them: ...
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233 views

Do nothing lamda…

$privilegeStrings = array_filter($privileges, function ($s) { return is_string($s); } ); Is there a better way to specify that I want just the string values in ...