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lazy-seq
Learn lazy-seq in Clojure with a construct-specific explanation, a unique example, a practical boundary, and a mastery check.
lazy-seq is an atomic Clojure topic inside Sequences. The example below uses the actual construct named by the lesson rather than a generic placeholder.
Focus on what lazy-seq changes: the input, binding, control path, object state, collection, runtime effect, or language contract. Then alter one value and verify that the behavior changes for a reason specific to this feature.
Topic-specific example
(defn ticks [n] (lazy-seq (cons n (ticks (inc n)))))
(take 4 (ticks 10))
Change the key input in this Clojure example and predict the result first; the named construct should be the reason the behavior changes.