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A keyword starts with a colon, like :name. Keywords are interned, compare fast, and evaluate to themselves.

A keyword is also a function: (:name user) looks itself up in a map — the most common way to read a value.

Destructuring binds parts of a collection to names in one step, killing repetitive lookups and making intent obvious.

With vector destructuring you bind positions directly inside a let form.

Use & to capture the rest of a sequence into a single binding.

Map destructuring with the :keys shorthand pulls named keys straight out of a map.

Provide fallbacks for absent keys with :or, so missing values get a sensible default.

Destructure right in the parameter list to write clean, declarative functions.

You can nest destructuring, pulling values out of structures inside structures in one binding form.

Namespaced keywords like :user/id avoid collisions across domains — standard practice in specs and larger systems.

Destructuring can get cryptic, so keep it shallow; fall back to explicit lookups when deep nesting hurts readability.

Test your destructuring knowledge.

Recap: keywords as fast keys and functions, vector and map destructuring, defaults with :or, nesting and namespaces, and knowing when to keep it simple.