Pascal's triangle: Difference between revisions
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The ''assert'' form causes the ''pascal'' function to throw an exception unless the argument is (integral and) positive. |
The ''assert'' form causes the ''pascal'' function to throw an exception unless the argument is (integral and) positive. |
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Here's a third version using the ''iterate'' function |
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<lang lisp> |
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(def pascal |
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(iterate |
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(fn [prev-row] |
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(->> |
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(concat [[(first prev-row)]] (partition 2 1 prev-row) [[(last prev-row)]]) |
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(map (partial apply +) ,,,))))) |
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</lang> |
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=={{header|Common Lisp}}== |
=={{header|Common Lisp}}== |
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