A collection is a group of values

Example collections:

  • your library of music on Spotify (or other music streaming service)
  • clothes in your wardrobe or shoe collection
  • co-ordinates on a map for a hiking route, including height & type of terrain and weather over time

Clojure has four collections that are built into the language.

Clojure Collections


Vectors and Maps are the most common data structures used in Clojure for defining and working with values.

Data structures in Clojure are used instead of defining your own types (which you would do in a language like Java, C++, Scala, etc.)

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