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Programming-Idioms

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  • Ruby

Idiom #202 Sum of squares

Calculate the sum of squares s of data, an array of floating point values.

s = data.sum{ _1**2 }

Since Ruby 2.7
s = data.sum{|i| i**2}
(defn square [x] (* x x))

(def s (reduce + (map square data)))

New implementation...
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