Announcing: defn-spec

Hi folks

I’ve created a new library called defn-spec. It lets you define Clojure specs inline with your function definitions. It reuses the design (and much of the implementation) of Schema, so if you’re familiar with that then this should be easy to learn.

I deliberately tried to keep defn-spec minimal and not add new concepts on top of vanilla Spec. The one exception to this is automatically creating the s/cat form. Keeping defn-spec minimal should make it safe and easy to adopt in a wide variety of projects and libraries.

I wrote more about this at I hope you enjoy it!


Hello, Daniel!

Totally hijacking this topic to say that The REPL is fantastic – you ask good questions, not too many or too few, and you really pay attention to the answer. I’ve enjoyed every episode, and learned a lot!



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