Curry - Leetcode 2632 - JavaScript 30-Day Challenge

Solving Day 10 of the Leetcode 30-day javascript challenge. Today's topic is Curry, my favorite 😋.

0:00 - What is a curried function?
3:40 - Iterative Solution
9:52 - Recursive Solution

leetcode 2632

#neetcode #leetcode #python

[DevDoodle]

This is literally the best video I've seen about currying. Thank you so much for that! 🌟🎉

[atharvsankpal]

I understood everything you explained, although I used chatgpt and bard to clear by doubts but isn't it just amazing that you can learn anything you want without going to college or school or anything it just amazes me

[NeetCodeIO]

I didn't realize that my iterative solution was not the same as the second solution they had in the editorial. I don't think they had a iterative solution at all.

[timothynash]

I think the recursive method actually makes more sense

[nithinchandranp]

I believe that since the call is made recursively, we should include a return statement for the function call in the else part. From what I understand, when we enter the if statement and the `fn` is called, a value is returned. However, we need this value to be returned to the main function call, and that can only happen if we return the values from the recursive calls, correct?

Code with the return statements added:

Recursive Solution:

return function curried(...args) {
if (fn.length === args.length) {
return fn(...args);
} else {
return function(...newArgs) {
return curried(...args, ...newArgs);
};
}
};

Iterative Solution:

let nums = [];
return function curried(...args) {
nums = [...nums, ...args];
if (fn.length === nums.length) {
return fn(...nums);
} else {
return curried;
}
};

Please let me know if I interpreted it correctly.

Also, they are both getting called recursively right? Since we are calling the curried function in the Iterative case also.

[Bryan-egsi]

Thanks for explaining it. I was so confused

[lkshh]

from where did your learned javascript so conceptually accurate, pls guide me

[TongMichael]

Thank you for your video!
It is very helpful.
Btw, I would suggest to change the tag of this video to #javascript instead of #python to get more exposure

[Android-]

That was complicated.
Thanks for the explanation!

[effyzhang]

Hi Thank you for the amazing explanation. If I just want to get a junior position as a JS programmer, is it suggested to learn how to implement the Javascript challenge? It starts to really get hard and with many things I never heard of. Thank you for your time!

[ashwanikumar]

this question is in premium question list in leet code . So from neetcode without subscription its not possible to submit

[Amar]

the name of problem doesn't justify the difficulty of the problem

[vixguy]

Day 10 of doing the 30-day challenge with neetcode

[julianelmasry]

how does ...newArgs know that this is the second argument passed int sum(1)(2) <--?

[yarosav]

there is no such thing as curry in js, only partial application

you need to learn what is the currying