missionary
malli
missionary | malli | |
---|---|---|
24 | 33 | |
605 | 1,416 | |
- | 0.6% | |
7.8 | 9.3 | |
10 days ago | 10 days ago | |
Clojure | Clojure | |
Eclipse Public License 2.0 | Eclipse Public License 2.0 |
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missionary
- Humble Chronicles: Managing State with Signals
- Is there a reframe/cljfx-like subscription/memoization-context library available?
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[Blog] The Web Before Teatime
I think the reactive query problem is more of a spectrum of tradeoffs, there's a middle ground between "full page refresh on nav" and "refresh all query subscriptions per user per tx". Truly realtime things like chat come from a streaming event source (not a database) and even in a chat app, most of the information coordinates on a page is slow moving. So really this is about regaining control over concurrent data flow so we can sample different views at different speeds. See technologies like https://github.com/leonoel/missionary.
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Comparison of manifold and clojure.core.async
I wonder if anyone can compare these to missionary?
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Is there a general IO library built to work with core.async?
related: https://github.com/leonoel/missionary
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Structuring Clojure Applications
- https://github.com/leonoel/missionary
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IO/async monad without the indirect monadic style: Possible? needed?
https://github.com/leonoel/missionary has excellent syntax, it uses a macro to extend regular clojure syntax with monadic join operator – basically turning clojure sexprs into do-notation
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What are the essential libraries to learn for web dev
I recommend having a look at missionary - it is probably the most essential library in our application. But it depends on what type of application you are building.
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UIs are streaming DAGs
Process supervision is what Missionary implements: https://github.com/leonoel/missionary
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Questions about Rich Hickey's comments on static types
Agree - mostly the opinions are just dated, in 2005-2012 the pure FP world (especially Scala) was in rough shape but then in 2018 Maybe Not (the really controversial talk about "Maybe Sheep") it didn't seem like he had taken the time to understand haskell. I would love to see how his opinions have evolved since then, in the 2017 interview with fogus he said "If I had more free time, I’d spend it with Haskell". Haskell has especially come a long way in 2018-2022 with the popularization of functional effect systems which are extraordinarily powerful; for example https://github.com/leonoel/missionary (2020-2022) is the best Clojure effect system and is a leap forward over core.async (2013), but that 9 year difference is a lifetime in CS
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.
What are some alternatives?
awesome-clojure - A curated list of awesome Clojure libraries and resources. Inspired by awesome-... stuff
clojure - The Clojure programming language
honeysql - Turn Clojure data structures into SQL
schema - Clojure(Script) library for declarative data description and validation
react-grid-layout - A draggable and resizable grid layout with responsive breakpoints, for React.
babashka - Native, fast starting Clojure interpreter for scripting
reitit - A fast data-driven routing library for Clojure/Script
manifold - A compatibility layer for event-driven abstractions
typedclojure - An optional type system for Clojure
fulcro - A library for development of single-page full-stack web applications in clj/cljs