malli
kit
malli | kit | |
---|---|---|
33 | 34 | |
1,416 | 447 | |
0.6% | 1.1% | |
9.3 | 8.0 | |
10 days ago | 7 days ago | |
Clojure | Clojure | |
Eclipse Public License 2.0 | MIT License |
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malli
- A History of Clojure (2020) [pdf]
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Critique of Lazy Sequences in Clojure
Clojure's lazy sequences by default are wonderful ergonomically, but it provides many ways to use strict evaluation if you want to. They aren't really a hassle either. I've been doing Clojure for the last few years and have a few grievances, but overall it's the most coherent, well thought out language I've used and I can't recommend it enough.
There is the issue of startup time with the JVM, but you can also do AOT compilation now so that really isn't a problem. Here are some other cool projects to look at if you're interested:
Malli: https://github.com/metosin/malli
Babashka: https://github.com/babashka/babashka
Clerk: https://github.com/nextjournal/clerk
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[ANN] Malli 0.11.0 is out - a data-driven data specification library for Clojure/Script
BREAKING: walking a :schema passes children instead of [id] to the walker function #884
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Generic functions, a newbie question
When you get to larger, more complex validations, I'd recommend checking out Malli or Spec.
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Any resources for "current best practices and learnings?"
for specs, you can try malli - feels pretty well supported and full featured: https://github.com/metosin/malli (i'm not 100% sure how popular it is for others, but I use it on my personal projects)
- Single-file scripts that download their dependencies
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Clojure Turns 15 round table video
Have you tried malli: Data-driven Schemas for Clojure/Script?
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Clojure from a Schemer's perspective
All that being said, I particularly use malli and I don't find anything to complain about. There is a very nice and sound ecosystem being built around it (malli-ts is one of my contributions to it, but still in early development stages). I highly recommend reading its README, very informative stuff.
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Clojure 15th Anniversary: A Retrospective
Any large codebase can be broken up into small isolated components that can be reasoned about independently. This is how you structure Clojure projects if you want them to be maintainable. Clojure inherently encourages doing this by defaulting to immutability. The contract between components is the data being passed to the component and returned by it. Using Malli schemas at the edges of the components is a typical approach to documenting their APIs https://github.com/metosin/malli
I see the fact that people often end up creating large and tightly coupled monolithic codebases in static languages as a negative aspect of static typing. Such codebases are difficult to reason about even if you have guarantees that the types align. Ultimately, you need to understand the relationships in code, and how they relate to business logic. The more coupling an application has the harder it becomes to reason about it as a whole.
Ideally, I think applications should be structured as a bunch of Lego blocks that can be composed together. Each component should encapsulate some functionality, and then the flow of the business logic should bubble up to the top and expressed in how these components are chained together.
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Worrying comment from HN on Building a Startup on Clojure
Uhhh spec has existed for a long time and before that, schema Nowadays we also have the excellent malli. If his codebase is full of functions where the shape of the data isn’t obvious, isn’t documented and isn’t specified in a specific/schema, that’s on him and his bad coding practices and really no different from passing data in other dynamic languages. A class by itself (without additional effort) only gives you field names.
kit
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Ask HN: What is your go-to stack for the web?
Clojure using for the server side https://github.com/kit-clj/kit
htmx for frontend, using the built-in kit htmx module.
- Kit – Clojure Web Development
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Why Is Jepsen Written in Clojure?
I am not sure what a web framework is, to be honest. The choices for many parts of a web application are really domain-specific and I'm not sure a single "framework" would work for everyone.
As far as web-related components go, my app uses Rum (as an interface to React), ring, http-kit, pushy (for history manipulation), sente (for websockets), buddy (for authentication tools).
If you are looking for a batteries-included "I want to have some sort of webapp right away" thing, I think https://kit-clj.github.io would fit the bill, but the general feeling in the Clojure community is that unlike Python with Django or Ruby with Rails, the choice of app components is not predetermined by the language.
- A History of Clojure (2020) [pdf]
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Most commonly used libraries/frameworks in Clojure
Luminus has, in theory, been superseded by Kit: https://kit-clj.github.io/ but even so it is still "an opinionated bundle of libraries" rather than a framework.
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Is there an open source project focused on ClojureScript, React, Reagent?
I learned by using https://luminusweb.com/docs/clojurescript.html to get me started. It gives you a plethora of sane starting points, and you can just work on switching it to your own business logic. Troubleshooting and adding functionality will usually lead you to understand how things work. The authors of luminus have moved on to build kit: https://kit-clj.github.io/ which is probably another good starting point.
- Help finding a webdev framework that works out of the box
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Clojure Turns 15 panel discussion video
The cljs stack I hear about a lot (and use) is ShadowCLJS with reagent (https://reagent-project.github.io/) and re-frame (https://day8.github.io/re-frame/). ShadowCLJS is more of a build tool, but is really well documented and easy to use. Reagent is basically react but a simpler API, and re-frame is a layer on top of that provides data subscriptions and event-handlers to manage app state. It's overkill for some apps but I find it's actually super easy to work with and not as much complexity as I thought.
For backend there is luminus (https://luminusweb.com/) or Kit (https://kit-clj.github.io/). They are basically project templates that wire together a ton of popular solutions for various things - database access, migrations, security, html templating, etc. Also includes frontend frameworks like re-frame if you want.
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your thoughts on the kit framework?
The component itself is just a thin wrapper for conman, you can see it here.
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Ask HN: Share Your Personal Site
Here’s me: https://luciano.laratel.li/
I was happy I could get the domain! Pretty simple hand-rolled server-rendered site using the kit-clj[0] and neat-css[1]. Main backbone of the site is here[2]. I used to use a CLJS SPA but it was overkill and not as nice to use (load times particularly.)
[0]: https://kit-clj.github.io/
What are some alternatives?
clojure - The Clojure programming language
biff - A Clojure web framework for solo developers.
schema - Clojure(Script) library for declarative data description and validation
duct - Server-side application framework for Clojure
babashka - Native, fast starting Clojure interpreter for scripting
re-frame-template - A Leiningen template for creating a re-frame application (client only) with a shadow-cljs build.
reitit - A fast data-driven routing library for Clojure/Script
react-query - 🤖 Powerful asynchronous state management, server-state utilities and data fetching for TS/JS, React, Solid, Svelte and Vue. [Moved to: https://github.com/TanStack/query]
honeysql - Turn Clojure data structures into SQL
clojure-inertia-pingcrm-demo - PingCRM on Clojure - A Clojure/Script fullstack demo application to illustrate how Inertia.js works.
fulcro - A library for development of single-page full-stack web applications in clj/cljs
usermanager-reitit-integrant-example - A little demo web app in Clojure, using Integrant, Ring, Reitit, Selmer (and a database)