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samandar-boymurodov/sum.js

Created August 15, 2021 13:05
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sum.js
function sum (n) {
if (n === undefined) return 0
let inc = n
function add (k) {
if (k === undefined) return inc
inc += k
return add
}
return add
}
console.log(sum(1)(2)(3)())
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