async
htmx
async | htmx | |
---|---|---|
16 | 567 | |
28,077 | 32,837 | |
- | 3.6% | |
8.1 | 9.6 | |
4 days ago | 6 days ago | |
JavaScript | JavaScript | |
MIT License | GNU General Public License v3.0 or later |
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async
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Avoid the Promise.all pitfall
Well you could just install the async package which has lots of useful functions like mapLimit which will reduce the burden and only run a number in parallel.
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What is this callback in async.parallel function?
Have you checked out the docs for the async library they are using?
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How to limit concurrency with Python asyncio?
Edit:2. What's a good library that takes care of common async patterns? (Something like async)
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I Avoid Async/Await
Async/await is certainly not promises. In fact it would be much better implemented without promises as I proposed here: https://es.discourse.group/t/callback-based-simplified-async...
I would even say that async/await is anti-promise, it takes the main functionality of promises, a caching layer for results and errors that allows you to add the code continuation later and elsewhere (which is a major footgun imo) and coerces the execution flow back to going on the next line and provided immediately at compile time which results in a cleaner flow but not as clean, stateless, efficient or functional as if you were to remove the promises completely. Having an additional caching layer and state machine around every asynchronous function call is quite inefficient.
The essence of async/await is not promises, it's the underlying javascript generator (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...) functionality combined with asynchronous code to stop and start the generator. It's the ability to pause and resume function execution based on asynchronous operations.
The promise functionality, the caching layer and state machine for results is basically sanitized away with async/await, it becomes dead-weight computation. The only benefit of promises in async/await code is being able to more easily interface with other promise laden code which you don't need once you have async/await and a library like https://www.npmjs.com/package/async for more complex cases.
Note that promises based async/await is also a mess of an implementation that breaks stack traces and needs to support tons of odd statement corner cases (basically anything that can return an object that could be a promise) whereas a continuation passing style async/await would be a much simpler implementation that would only apply to function calls and maintain stack traces. We get that stack trace support automatically because of the great work of whoever implemented javascript generators which seem to already carry stack traces across paused/resumed functions (if you don't wrap in promises).
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What is the difference between async.waterfall and async.series
The nodejs async module: https://github.com/caolan/async provides 2 similar methods, async.waterfall and async.series.
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JavaScript ES6 promise for loop [duplicate]
With async I'd simply use async.series().
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Some questions about events and promises
I don't understand. Sure you could spawn a ton of processes, but things might be bogged down. There are utilities out there for doing work queues.... so only N workers are running at any one time. The async library has some utilities for that. https://github.com/caolan/async
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Caolan Asyncjs vs Async/Await: Which One to Use for Async Operations in NodeJS
The documentation of asyncjs is quite straightforward and easy to read. As we've only seen a couple of use cases in this article, I'd recommend to go the asyncjs documentation and check out other possibilities with the library. You can also try to replicate the same using async/await to solidify your understanding of where the library might still make sense.
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[AskJS] How were asynchronous functions written before Promises?
It basically was tons and tons of callbacks. They'd nest weirdly deep and be a pain to work with. If you're curious, here's a link to one of my favorite JavaScript libraries from those days - it gave you a bunch of neat utilities for dealing with async code.
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Aren't promises just callbacks?
api(function(result){ api2(function(result2){ api3(function(result3){ // do work }); });}); Which I could use a library like async for anyway, with something like:
htmx
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Migrating Next.js App to GO + Templ & HTMX
Recently, I just rewrite one of my application Stashbin from Next.js to GO. Though my main motivation of this migration was to learn GO and experimenting with HTMX. I also aiming to reduce the resource usage of my application and simplify the deployment process. Initially, Stashbin codebase are split into two seperate repository, one for the frontend that uses Next.js and another for the backend that already uses GO. The backend repository is just a REST API responsible for storing and retreiving data from the database.
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🕸️ Web development trends we will see in 2024 👀
HTMX is another library that gained popularity due to its server-first approach to rendering data, although seeking a much simpler way of appealing to developers.
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Reusable Input Datalist
When I work with HTMX I need isolated component that can be reusable a form. So I create a PHP Function that generate the Input Datalist.
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HTMZ inspired form subission
I was inspired by htmz (which was in turn inspired by htmx) and how the author got pretty close to a basic htmx-like experience just using an iframe. I wanted to push it a little further so whipped this demo together. My submission demonstrates progressive enhancement for the form - with js enabled the request targets an iframe that is inserted into the dom, meaning the page doesn't actually navigate (similar to event.preventDefault()). The iframe receives the html response from the request and on load triggers a function to swap out it's contents into the main page.
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Example Java Application with Embedded Jetty and a htmx Website
As described on htmx.org: "htmx gives you access to AJAX, CSS Transitions, WebSockets and Server Sent Events directly in HTML, using attributes, so you can build modern user interfaces with the simplicity and power of hypertext"
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Show HN: ZakuChess, an open source web game built with Django, Htmx and Tailwind
Apart from the source code itself, the repo's README also gives a bit more details about the various packages I used.
1. htmx: https://htmx.org/
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Show HN: Alpine Ajax – If Htmx and Alpine.js Had a Baby
Also, there’s some response header juggling you have to do when submitting forms that have a validation step before redirecting: https://github.com/bigskysoftware/htmx/issues/369
I’ve tried to iron out any footguns or server requirements I’ve bumped into while using HTMX & Hotwire in my projects.
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🤓 My top 3 Go packages that I wish I'd known about earlier
✨ In recent months, I have been developing web projects using GOTTHA stack: Go + Templ + Tailwind CSS + htmx + Alpine.js. As soon as I'm ready to talk about all the subtleties and pitfalls, I'll post it on my social networks.
- FLaNK Stack 26 February 2024
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Go + Hypermedia - A Learning Journey (Part 1)
I've been digging into HTMX lately (using Python web frameworks) and find the concepts and approach to be interesting and promising. The idea of hypermedia driven systems over the current practice of JavaScript based frameworks (I never really got into React, played with Vue, and enjoy Svelte/SvelteKit) and the ability to chose your language/framework for the backend while primarily leveraging HTML/CSS on the frontend just seems refreshing.
What are some alternatives?
Bluebird - :bird: :zap: Bluebird is a full featured promise library with unmatched performance.
Alpine.js - A rugged, minimal framework for composing JavaScript behavior in your markup.
moment - Parse, validate, manipulate, and display dates in javascript.
Vue.js - This is the repo for Vue 2. For Vue 3, go to https://github.com/vuejs/core
q - A promise library for JavaScript
astro - The web framework for content-driven websites. ⭐️ Star to support our work!
contra - :surfer: Asynchronous flow control with a functional taste to it
unpoly - Progressive enhancement for HTML
neo-async - Neo-Async is thought to be used as a drop-in replacement for Async, it almost fully covers its functionality and runs faster
react-snap - 👻 Zero-configuration framework-agnostic static prerendering for SPAs
Simple-Series-Parallel - A minimalist utility module for running async functions in series or parallel
django-unicorn - The magical reactive component framework for Django ✨