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Collections vs sequences
When I first was learning Clojure, something was confusing: some operations, like map, took the collection as the last argument, and some, like conj, took the collection as the first argument. It was frustrating. But then I learned that they are in two different categories of functions. Learning that fact helped me be more productive in the language.
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