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Lookup by key
It is a very useful access pattern to look up a value given another key. We use HashMaps, Vectors, and Sets to implement this pattern. Each data type has its own semantics.
Code is available: lispcast/clojure-collections
You can checkout the code in your local repo with this command:
$CMD git clone https://github.com/lispcast/clojure-collections.git $CMD cd clojure-collections