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Using Haskell you can write it way more concise:
iseven :: Int -> Bool iseven 0 = True iseven 1 = False iseven 2 = True iseven 3 = False iseven 4 = True iseven 5 = False iseven 6 = True iseven 7 = False iseven 8 = True ...However, we can be way smarter by only defining the 2 base cases and then a recursive definition for all other numbers:
iseven :: Int -> Bool iseven 0 = True iseven 1 = False iseven n = iseven (n-2)It’s having a hard time with negative numbers, but honestly that’s quite a mood
Recursion is its own reward
=if((number/2)-round(number/2,0)=0,true,false)
so did someone draw this by hand or was it a filter
tbh it looks like an AI broke this down slightly & reconstructed it
a wise programmer knows to always ask the question “can i solve this problem in python using metaprogramming?” in this instance, the answer is yes:
def is_even(n: int): s = "def is_even_helper(number: int):\n" b = True for i in range(0, abs(n)+2): s += f"\tif (abs(number) == {i}): return {b}\n" b = not b exec(s) return locals().get("is_even_helper")(n)Gotta love how human readable Python always is!
“If it’s not an npm package it’s impossible”
- JS devs, probably
That’s a lot of downloads
Can’t you just
If (number % 2 == 0){return true}
but what if
numberisn’t an integer, or even a number at all? This code, and the improved code shared by the other user, could cause major problems under those conditions. Really, what you would want, is to validate thatnumberis actually an integer before performing the modulo, and if it isn’t, you want to throw an exception, because something has gone wrong.That’s exactly what that NPM module does. And this is why it’s not a bad thing to use packages/modules for even very simple tasks, because they help to prevent us from making silly mistakes.
That would already cause an exception when calling the function because it has int number in the parameters
Javascript doesn’t have strongly-typed variables
return number % 2 === 0yup, which is why I find the download stats truly horrifying
no
ok
I thought they were going to turn into Saddam Husseins.
Zero people in this post get the YanDev reference
I do :D
so nobody actually really got the joke. very sad Moment.
It’s really just us… I’ve seen the basic programming joke a bunch of times, but people really aren’t understanding the YanDev/font embellishment. Sad indeed.
if (!(number & 1))if (~number & 1)
just check the least significant bit smh my head
return trueis correct around half of the time
return Math.random() > 0.5would also be correct about half the time
Wouldn’t that only be correct about 25% of the time?
for even, 50% chance of correctness, same for odd.
assert IsEven(2) == True assert IsEven(4) == True assert IsEven(6) == TrueAll checks pass. LGTM
import re def is_even(i: int) -> bool: return re.match(r"-?\d*[02468]$", str(i)) is not Nonei was gonna suggest the classic
re.match(r"^(..)\1*$", "0" * abs(i)) is not NoneCursed
If number%2 == 0: return("Even") Else: return("odd")Not all ARM CPUs support mod operations. It’s better to use bit operations. Check if the last bit is set. If set it’s odd else it’s even.
I came here to post this
Ask AI:
public static boolean isEven(int number) { // Handle negative numbers if (number < 0) { number = -number; // Convert to positive } // Subtract 2 until we reach 0 or 1 while (number > 1) { number -= 2; } // If we reach 0, it's even; if we reach 1, it's odd return number == 0; }This makes me happy that I don’t use genai
I’m not sure how fucked up their prompt is (or how unlucky they were). I just did 3 tries and every time it used modulo.
I’m assuming they asked it specifically to either not use modulo or to do a suboptimal way to make this joke.
Anything but using modulo I guess
And bit operations (:
When you sacrifice memory for an O(1) algorithm.
In this case still O(n)
Smh this is literally what switch statements are for
