clojure Collections and Sequences Collections
Example
All built-in Clojure collections are immutable and heterogeneous, have literal syntax, and support the conj, count, and seq functions.
conjreturns a new collection that is equivalent to an existing collection with an item "added", in either "constant" or logarithmic time. What exactly this means depends on the collection.countreturns the number of items in a collection, in constant time.seqreturnsnilfor an empty collection, or a sequence of items for a non-empty collection, in constant time.
