Sum of squares: Difference between revisions
m
→JS ES6: Tidied.
m (→{{header|AppleScript}}: Tidied.) |
m (→JS ES6: Tidied.) |
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Line 1,304:
<lang JavaScript>(() => {
'use strict';
// squared :: Num a => a -> a▼
const squared = x => Math.pow(x, 2);▼
// sum :: (Num a) => [a] -> a▼
const sum = xs => xs.reduce((a, x) => a + x, 0);▼
// sumOfSquares :: Num a => [a] -> a
const sumOfSquares = xs =>
sum(xs.map(squared));
// sumOfSquares2 :: Num a => [a] -> a
Line 1,318 ⟶ 1,313:
xs.reduce((a, x) => a + squared(x), 0);
return [sumOfSquares, sumOfSquares2]▼
.map(f => f([3, 1, 4, 1, 5, 9]))▼
.join('\n');▼
})();</lang>▼
// ---------------------- TEST -----------------------
const main = () => [
sumOfSquares,
].map(
// --------------------- GENERIC ---------------------
▲ // squared :: Num a => a -> a
Math.pow(x, 2);
const sum = xs =>
// The numeric sum of all values in xs.
// MAIN ---
return main();
▲})();</lang>
{{Out}}
<pre>133
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