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| OF | q | |
|---|---|---|
| 0 | 9 | |
| 14 | 14,956 | |
| - | - | |
| 0.0 | 0.0 | |
| over 2 years ago | 5 months ago | |
| JavaScript | JavaScript | |
| MIT License | MIT License |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
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q
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es6-cheatsheet
Prior to ES6, we used bluebird or Q. Now we have Promises natively:
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Resolved Promises and Promise Fates
Before promises arrived natively in JS, there were(and still are) many separate independent promise implementations in the form of third-party libraries for example Q, RSVP, etc. Even jQuery has its own custom implementation that they call deferreds. The name and the implementation might differ from library to library but the intention is the same, making asynchronous code behave like synchronous code.
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Introduction to Asynchronous JavaScript
Promises are a popular way of getting rid of callback hell. Originally it was a type of construct introduced by JavaScript libraries like Q and when.js, but these types of libraries became popular enough that promises are now provided natively in ECMAScript 6.
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7 tips for a Node.js developer
Another great library is Q https://github.com/kriskowal/q. This library is exposes the concept of promises. A promise is basically an object that is returned from a method with the “promise” that it will eventually provide a return value. This ties is very neatly with the asynchronous nature of javascript and node.js.
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How to Return multiple functions and values while working with REST APIs (Part 1)
q : This module is used for creating custom promises. Check it out here
What are some alternatives?
async - Async utilities for node and the browser
Bluebird - :bird: :zap: Bluebird is a full featured promise library with unmatched performance.
angular-async-loader - Load modules and components asynchronously for angular 1.x application.
when - A solid, fast Promises/A+ and when() implementation, plus other async goodies.
ObjectEventTarget - A same behaviour EventTarget prototype, that can work with any object from JavaScript
contra - :surfer: Asynchronous flow control with a functional taste to it
step - An async control-flow library that makes stepping through logic easy.
Javascript State Machine - A javascript finite state machine library
modern-async - A modern JavaScript tooling library for asynchronous operations using async/await, promises and async generators