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)
1
vote
1answer
23 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:
...
5
votes
1answer
43 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
81 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
70 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
726 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
262 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
107 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
267 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
46 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
86 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
1k views
2
votes
1answer
183 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
49 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
417 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
39 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
69 views
2
votes
1answer
158 views
Node.js API route for POSTing a resource. Getting rid of callback pyramid
I'm writing an API for simple GET and POST routes. The app is a shared to-do-list. Users and lists are stored separately. A list can belong to many users, and a user can have many lists.
...
1
vote
1answer
2k 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
107 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
215 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
100 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
38 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
51 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
433 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
90 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
167 views
A method for events callback with the correct “this”
What do you think of the following "utility" :
...
2
votes
1answer
278 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
98 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
124 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.
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1
vote
2answers
380 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
3k 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
220 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
3k 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
335 views
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
118 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
114 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
533 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:
...
2
votes
2answers
115 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 ...
6
votes
2answers
158 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:
...
3
votes
1answer
2k views
Node.js async callback hell
I'm 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 ...
4
votes
1answer
189 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 ...
1
vote
1answer
3k 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 ...
1
vote
2answers
10k 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 ...
3
votes
1answer
227 views
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 ...
2
votes
1answer
89 views
My yld NPM - callbacks/promises alternative
I'd like feedback on my callbacks/promises alternative, please.
The yld repository
...
2
votes
1answer
2k 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 ...
6
votes
1answer
135 views
replaceWithCallback() UDF
As explained in my blog article…
I was looking up the docs for Javascript's String replace()
function the other day (because, no, I could not remember the vagaries
of its syntax!). And whilst ...
