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May 3, 2017 at 15:08 comment added Reinstate Monica Note that Haskell's equivalent of amon's construction is actually repeat' x = let xs = x : xs in xs. The subtle difference is that this implementation creates one self-referential node because the recursion is in the data, whereas the code in the question actually creates a (lazy) infinite list because the recursion is in the function call.
Dec 17, 2015 at 1:51 answer added sacundim timeline score: 0
S Dec 2, 2015 at 9:38 history suggested Garg CC BY-SA 3.0
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Dec 1, 2015 at 20:48 answer added Ryan Reich timeline score: 7
Dec 1, 2015 at 19:53 history tweeted twitter.com/StackProgrammer/status/671779149007163392
Dec 1, 2015 at 18:52 vote accept Michael
Dec 1, 2015 at 18:31 comment added amon By the way, repeat could be defined in an imperative language as def repeat(x) = { let xs = new LinkedListNode(x); xs.next = xs; xs }, which models the recursion in the data rather than the control flow. Where does that linked list end? Nowhere, never, there is no end node.
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Dec 1, 2015 at 18:00 history asked Michael CC BY-SA 3.0