11 lines
262 B
JavaScript
11 lines
262 B
JavaScript
export default function(array, f) {
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if (f == null) f = pair;
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var i = 0, n = array.length - 1, p = array[0], pairs = new Array(n < 0 ? 0 : n);
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while (i < n) pairs[i] = f(p, p = array[++i]);
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return pairs;
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}
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export function pair(a, b) {
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return [a, b];
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}
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