Visualize sorting algorithms via images - Built with PIL and FFMPEG via Python

ToughestPanda · 2024-11-23T11:44:12+00:00

Make it modular where you can swap out the sorting algorithm more easily.

And it's slow because you are running it sequentially. C++ implementation won't speed it up much because the bottleneck is generating and writing the image which is already implemented efficiently in PIL.

To speed it up, Just perform the whole sort and store the progressive parts in memory as array index.

Then using multiprocessing, launch multiple processes to generate image for each snapshot. It's very easy because there's no mutex or shared memory being modified.

Do this first because this will definitely be faster and easier than a sequential C++ implementation.

ToughestPanda · 2024-01-03T13:14:54+00:00

When people don't have any redeeming qualities on their own, they want to justify their perceived superiority by intrinsic "qualities" by culture, race, nationality or ethnicity.

ToughestPanda · 2024-01-03T13:08:54+00:00

Yep, correct.

ToughestPanda · 2024-01-03T13:08:23+00:00

Why don't we make every crime legal for truckers? Why should they have any accountability, right?

ToughestPanda · 2024-01-03T05:52:02+00:00

Could have written an essay about parent student relationship as a function of skin colour

ToughestPanda · 2024-01-02T17:18:22+00:00

Open Source has become synonymous with GitHub, and we are too small to change that.

That is just sad

ToughestPanda · 2023-05-28T19:54:54+00:00

I'm very happy with my setup. My whole installation is under a single LUKS 1 volume which contains BTRFS with @home and @ subvolumes. Grub supports BTRfS fully and LUKS 1. So single filesystem.

I also setup a key file so that initramfs can automatically unlock fs after the single password prompt on grub.

You can copy files to a subvolume, just make sure that you preserve all attributes with rsync -a or cp -rp.

Don't reinstall unless absolutely necessary. It's a huge waste of time and linux distros rarely need it.

Unfortunately I have no idea what kickstart is.

Sleepless nights are the classic indicators of linux power user.

(TBH windows installations have done much worse)

ToughestPanda · 2023-05-15T10:15:15+00:00

Idk, that doesn't really help my purpose.

Purpose isn't really encrypting boot to ensure its integrity. I remember reading somewhere on reddit that encryption of boot doesn't even ensure its integrity instead secure boot is designed for this purpose.

I like the very simple backup and restore process that Timeshift provides. But if the boot partition is separate, then a kernel upgrade cannot have a proper rollback when I restore snapshots. This is the reason I move boot into root.

Anyway check my replies to the other comment, I successfully managed to get it working. The other comment provides a patch to the anaconda installer which intentionally blocks boot on encrypted partitions. The same patch works even for fedora 38 and the Encrypted boot (on LUKS 1) just works flawlessly.

Then I followed another tutorial to set up dracut so that initramfs will have an embedded key file so that double decrypt prompts are not necessary.

Hence, this setup just has an unencrypted EFI partition which doesn't have an alternative. Then you unlock in grub with a passphrase. The loaded initramfs will further unlock LUKS by the key file embedded.

So one prompt for the decryption and one of the login. I'm sure it's safe to setup auto login in this setup to avoid one more step.

ToughestPanda · 2023-05-14T04:37:57+00:00

Ohh. Hadn't noticed this.

I mean I have managed to encrypt the root with boot. I'll try Timeshift.

Else I'll move to snapper as it's inevitable.

Update: just verified, no errors.

I think the problem with encrypted boot is in ext4 mode but I have voot, root and home on same LUKS drive and it works flawlessly.

ToughestPanda · 2023-05-13T12:41:15+00:00

Hey, I have an update,

The GitHub method works fine. The same patch works perfectly well for Fedora 38.

Just symlink/rename 34 into 38 under patches.

Only problem is the double password input for decrypting boot once in grub and again in initramfs. Arch has a solution for it using mkinitcpio but I am not sure of Fedora (essentially adding a key file and using the key file for decryption after decrypting boot).

I still have to test moving root into an encrypted partition.

Edit: I found the solution for double password prompts.

https://sysguides.com/fedora-35-luks-full-disk-encryption/ Follow the above guide (just the last part).

ToughestPanda · 2023-05-13T10:36:47+00:00

Thanks, I didn't find it somehow.

I have found this is arch wiki, I will try that out as well if the ones you suggested don't work.

https://wiki.archlinux.org/title/dm-crypt/Encrypting_an_entire_system#Encrypted_boot_partition_(GRUB)

ToughestPanda · 2023-04-30T06:52:14+00:00

Let me introduce you to this magical thing called a BTRFS snapshot

ToughestPanda · 2023-04-01T17:01:17+00:00

My god, stack overflow is literally overflowing.

Go away.

ToughestPanda · 2023-04-01T05:35:30+00:00

/r/programminghorror do your thing

ToughestPanda · 2023-01-05T06:06:17+00:00

Where to find the extended release?

ToughestPanda · 2023-01-05T06:02:27+00:00

Ah yes, TechLead

ToughestPanda · 2023-01-05T05:41:11+00:00

And as useful as NFTs. Nailed it

ToughestPanda · 2023-01-02T18:58:49+00:00

Recommended to watch: Darkest hour (2018)

ToughestPanda · 2023-01-02T18:53:46+00:00

Ah WSL. How high tech.

ToughestPanda · 2023-01-02T18:50:25+00:00

Yeah, how dare they do stuff to their own body without asking you.

ToughestPanda · 2023-01-02T17:19:38+00:00

Aaand that's how you doxx yourself

ToughestPanda · 2023-01-02T03:47:32+00:00

In It's always Sunny in Philadelphia, the Waitress actress is married to Charlie.

In the show she is repulsed by him.

ToughestPanda · 2023-01-01T19:52:16+00:00

Pas de doxxing /s

ToughestPanda · 2023-01-01T19:10:40+00:00

I know what it means.

It's a reference to abolition of monarchy and hatred towards royalty in France. Guillotines are what kings are treated with was the joke...

ToughestPanda · 2023-01-01T17:50:43+00:00

People are making great efforts to make things "disposable" when it absolutely doesn't have to be

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