Tool Profile

Clojure 1.13 adds support for checked keys

Clojure 1.13 adds checked keys for clearer map contracts.

At a glance:

First seen:2026-07-06

Last seen:2026-07-06

Sightings:1

Source:clojure.org

What it is

Clojure 1.13 adds checked keys for clearer map contracts.

Why developers recommend it

The feature prompted practical discussion about safer data boundaries and ergonomics.

Hacker News evidence

2026-07-06

Replies focused on required versus optional checked keys, runtime guarantees, and how they fit with spec’ed maps.

Clojure 1.13 adds support for checked keys