Callable function

Question

I need help with this code.
https://code.sololearn.com/cR4Ek18FgH5k/?ref=app

Answer 1

This link has some meaningful solution in python with some good approach have an look if this help Tomiwa Joseph
https://www.sololearn.com/post/355059/?ref=app

Answer 2

Wow, XXX, nice! 😁
It would be great if we got the actual number in the end, so that you could write something like:
n: int = add(1)(2)

Answer 3

I couldn't think of a solution better than HonFu 's answer. But if callable classes are okay, you can do something like this
https://code.sololearn.com/ckKYGh7RH1RG/?ref=app

Answer 4

HonFu that would be nice. But I can't think of a solution to that. Any suggestions??
Edit: The only thing I can think of is using the 'with' statement (updated the code to reflect that).

Answer 5

XXX, unfortunately not!
In my mind, the function would have to know in time, if it will be called again - which obviously isn't really possible.
I'm sure there is a trick, but I don't see it.

Answer 6

XXX, hm, all of the Python solutions there have some sort of circumvention in them.
Either they return a string representation like you showed (have you gotten that from the challenge thread?), or they have a show function that has to sum it all up.

Answer 7

HonFu the post mentioned by Preity has a really genius code by Tibor Santa, that is, to inherit from int. So in the __call__ method we will actually be returning a subtype of int which can be added to ints

Answer 8

Wow, so simple! 😶
That guy knows his way around the Py. 😁

Answer 9

HonFu Yes that's right.
But let me know if this is possible? Or am I just disturbing my brain?

Answer 10

Hm, tricky. I'm at a loss so far. 😅
This is the closest I've come:
def add(call=None, n=[]):
if call:
n.append(call)
return add
return sum(n)
But it only works with an empty call at the end:
print(add(2)(3)(7)())
Something with closure... maybe... or... 🤔🤯

Answer 11

If I try to use the function a second time, I get an error.

Answer 12

Two possibilities:
1.) You make it. Then it was possible.
2.) You give up. Then you'll always wonder: Would it have been possible or not?
The general task is solvable, the aforementioned solution, inheriting from int, just great.
That doesn't necessarily mean there's no other way to do it.

Answer 13

𝐊𝐢𝐢𝐛𝐨 𝐆𝐡𝐚𝐲𝐚𝐥 it was in the original code that the problem was in.
Trying to pass a second argument outside of a function call.
All i did was move a number back in to the call. Check OPs code

Answer 14

I think we should check this kata out
https://www.codewars.com/kata/539a0e4d85e3425cb0000a88/train/JUMP_LINK__&&__python__&&__JUMP_LINK

Answer 15

Waoh, 😳😳 really close infact. Good job HonFu It is indeed tricky.

Answer 16

This is another cool way to go about it XXX waoh 😀. Thanks guys. There is just so much...too much to learn.

Answer 17

Really appreciate this Preity

Answer 18

Tricker that's not really a solution to the problem. What if you want to use the function in the interactive mode.

Answer 19

I think this is more easier:
https://code.sololearn.com/cSX2ibOpHaPb/?ref=app

Answer 20

HonFu sorry, I don't get you.