[Meme] Swapping integers in Python

Jason Novinger · edit-2 2 years ago

[Meme] Swapping integers in Python

Vahtos · 2 years ago

Isn’t c/Programmer Humor already for memes?

ruffsl · 2 years ago

Hear, hear!

I’d prefer to keep all lang communities on topic. E.g. I occasionally block and unblock !c/programmer_humor when I want to read technical news or just have a laugh. If memes crossed into all local subs, then the noise-to-news ratio couldn’t be customized as easily.

Although I suppose tagging posts would be a better compromise.
Does Lemmy support tagging posts, or filtering feeds by tag yet?

LaggyKar · 2 years ago

Agreed, let’s keep memes separate from serious posts

Vahtos · edit-2 2 years ago

My thoughts exactly. Tagging them (if possible) is OK, but kind of annoying to need to go to all these different communities and filter memes when there is already a dedicated community for programming memes.

It also may turn off new arrivals that may be looking for a more serious community, and think all/most of the content is memes.

snowe · 2 years ago

@[email protected] is working on tagging, but I wouldn’t expect it anytime soon. It’s a big feature.

@[email protected] · 2 years ago

Tagging would make sense if the community becomes larger and naturally people start requesting it. For now, I think memes should stay in Pr. Humor

@[email protected] · 2 years ago

I didn’t care before but you make a good point. I vote keep them separate.

ActuallyRuben · 2 years ago

a ^= b
b ^= a
a ^= b

@[email protected] · 2 years ago

I’m gonna need you to elaborate on this one

@[email protected] · edit-2 2 years ago

xor has the property x ^ x = 0, and x ^ 0 = x. So, x ^ x ^ y = y

a' = a ^ b
b' = b ^ a' = b ^ (a ^ b) = a
a'' = (a ^ b) ^ a = b

This is pretty clever, I’ve never seen this for a swap.

ActuallyRuben · 2 years ago

Couldn’t have explained it better myself. I don’t remember where exactly I first read about this trick, but it’s mainly useful in C or Assembly, as you don’t have to resort to using a third variable/register.

Jason Novinger · 2 years ago

I used Lemmy’s cross-post functionality, but it doesn’t seem to have marked it?! Original post is https://lemmy.ml/post/1213162

Ategon · 2 years ago

It looks like it marked it on my end. Lemmy has two different cross post functionalities based on how you cross post, one where it shows the original post in the text and one where it shows up as a link under the new post

Jason Novinger · 2 years ago

Ah, I am seeing that now, thanks!

I’m not sure if that was there originally and I just missed it or if Lemmy added it later when it got around to it.

@[email protected] · 2 years ago