malli
specter
malli | specter | |
---|---|---|
33 | 18 | |
1,416 | 2,479 | |
0.6% | 0.0% | |
9.3 | 0.0 | |
10 days ago | about 1 year ago | |
Clojure | Clojure | |
Eclipse Public License 2.0 | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
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.
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.
specter
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Rama is a testament to the power of Clojure
> Another example is Specter. Specter is a generically useful library for querying and manipulating data structures
> https://github.com/redplanetlabs/specter/tree/master/src
> MutableCell.Java. 8 years ago
package com.rpl.specter;
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Why your F# evangelism isn't working
If you are truly interested in understanding my point of view -- a great way to do it would be to learn how to use this Clojure DSL: https://github.com/redplanetlabs/specter
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Digging into deeply nested sequence in Clojure
For deeply nested data, use specter https://github.com/redplanetlabs/specter
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Advent of Code inside the REPL
Yes :), I needed a fast dijkstra implementation to solve a puzzle in 2021. A pure clojure implementation was too slow so i built one on top of this https://github.com/redplanetlabs/specter
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Lisp feature - domain specific language
https://github.com/redplanetlabs/specter (very powerful way to express modifications to nested data)
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Working with large maps
Don't forget about specter which is efficient and compact due to its DSL.
- How to modify a nested element of a list
- Making a small change to a big data structure in Clojure
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Nested mapping?
Learn and use specter for nested data manipulation, will take some studying but is a more general solution (https://github.com/redplanetlabs/specter)
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-🎄- 2021 Day 16 Solutions -🎄-
For part 1, the version (and other things) are attached to the metadata of each sexp, and a Specter recursive path is used to extract all of the versions.
What are some alternatives?
clojure - The Clojure programming language
meander - Tools for transparent data transformation
schema - Clojure(Script) library for declarative data description and validation
clojure-graph-resources - A curated list of Clojure resources for dealing with graph-like data.
babashka - Native, fast starting Clojure interpreter for scripting
crux - General purpose bitemporal database for SQL, Datalog & graph queries. Backed by @juxt [Moved to: https://github.com/xtdb/xtdb]
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-dsl-resources - A curated list of Clojure resources for dealing with domain-specific languages.