Curry Function - 4 | Hard | JavaScript Interview Question - 6

JavaScript Interview Question - 6 | In this video, we will see how to solve a simple JavaScript problem where we are asked to implement a curry function.

The curry function can keep on accepting arguments in the same or subsequent calls by returning a function. When the value() method is invoked or any primitive operation is performed then only the curry function returns the sum of all the arguments it has received.

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[lalitsheoran]

i think the following line was redundant -
(lineNo.28) "this.value = helper.valueOf"

because sum function is always returning the helper function.
Therefore, (lineNo.34) - "console. log (add(1, 2, 3). value() == 6);" will call helper.value not sum.value, so there is no edge case to cover here.

Thank you, enjoying the playlist.

[hritickjaiswal]

function add(...a) {
function recursive(...b) {
total += b.reduce((sum, curr) => (sum += curr), 0);

return recursive;
}

let total = a.reduce((sum, curr) => (sum += curr), 0);

function returnTotal() {
return total;
}
recursive.valueOf = returnTotal;
recursive.value = returnTotal;

return recursive;
}

console.log(add(1)(2)(3, 4).valueOf());

My approach

[PallaviNagarkar]

Why do we need this value method explicitly, the add function also returns the sum only, right?! 😕