(range 2 7) (range 6) ;; An infinite range: (take 5 (range)) (class (range 2 7)) (class (range)) (def evens (filter even? (range))) (take 5 evens) (take 5 (map #(* % %) evens)) ;; how to create your own infinite lazy sequences: (take 10 (repeat 3)) (take 10 (iterate #(* 2 %) 1)) ;; many higher-order functions return lazy sequences: (take 10 (map inc (iterate #(* 2 %) 1))) (take 10 (interleave (iterate #(* 2 %) 1) (iterate #(* 3 %) 1))) ;; you can store lazy sequences in variables: (def all-natural-numbers (range)) ;; note: reduce is not lazy (it is eager): ;; this will go into an infinite computation: ;(def sum-of-everything (reduce + (range)))
CSci 4651 course web site.
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