21 lines
413 B
JavaScript
21 lines
413 B
JavaScript
/* intersperse: Return an array with the separator interspersed between
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* each element of the input array.
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*
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* > _([1,2,3]).intersperse(0)
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* [1,0,2,0,3]
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*
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* From: https://stackoverflow.com/a/23619085
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*/
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export const intersperse = (arr, sep) => {
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if (arr.length === 0) {
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return []
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}
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return arr.slice(1).reduce(
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function (xs, x, i) {
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return xs.concat([sep, x])
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},
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[arr[0]]
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)
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}
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