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indreklasn/duplicate.js

Created July 14, 2019 19:19
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duplicate.js
// make this work
duplicate([1,2,3,4,5]); // [1,2,3,4,5,1,2,3,4,5]
@cogk
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cogk commented Aug 24, 2019

One possible solution:

const duplicate = a => [...a, ...a]

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