injest
malli
injest | malli | |
---|---|---|
7 | 33 | |
164 | 1,416 | |
- | 0.6% | |
0.0 | 9.3 | |
about 2 years ago | 8 days ago | |
Clojure | Clojure | |
Eclipse Public License 1.0 | Eclipse Public License 2.0 |
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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.
injest
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My mental model of Clojure transducers
joinr pointed out this lib to me and it seems to make using them more ergonomic (if you're into pipelining)
https://github.com/johnmn3/injest
However writing your own indeed doesn't sound fun :))
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Critique of Lazy Sequences in Clojure
As I posted on Reddit:
It might also be good to mention Injest
https://github.com/johnmn3/injest
Which makes transducers more ergonomic to use if you are like me and use threading macros everywhere
Would be curious to hear how others feel about it
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Understanding transducers
If you don't know how to use transducers, I recommend trying: https://github.com/johnmn3/injest it automatically converts your normal sequence operations to make-use of transducers.
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Some code examples in Clojure, how to avoid complexity
You can use https://github.com/johnmn3/injest to get threading macros that use transducers.
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Workshop video: Wrangling Sequences with Injest by John Newman (2021-11-22)
In this 2021-11-22 workshop, John Newman introduced Injest.
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Workshop: Structure and Interpretation of Clojure Transducers
The transducers workshop by Ben Sless is recommended as background for John Newman's workshop about Injest, which will take place a week later. https://github.com/johnmn3/injest
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Grokking Clojure transducers
profile and test. sometimes the lazy path is fine, but in general, transducers should be more efficient. there's a recent library that tries to make it somewhat seamless to go between the threading functions with lazy seqs or transducers, called injest.
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?
xforms - Extra transducers and reducing fns for Clojure(script)
clojure - The Clojure programming language
schema - Clojure(Script) library for declarative data description and validation
babashka - Native, fast starting Clojure interpreter for scripting
reitit - A fast data-driven routing library for Clojure/Script
honeysql - Turn Clojure data structures into SQL
fulcro - A library for development of single-page full-stack web applications in clj/cljs
clojure-graph-resources - A curated list of Clojure resources for dealing with graph-like data.
meander - Tools for transparent data transformation
specter - Clojure(Script)'s missing piece
awesome-lisp-companies - Awesome Lisp Companies
clojure-dsl-resources - A curated list of Clojure resources for dealing with domain-specific languages.