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@qoomon
qoomon / conventional_commit_messages.md
Last active May 18, 2024 15:27
Conventional Commit Messages

Conventional Commit Messages

See how a minor change to your commit message style can make a difference.

Tip

Have a look at git-conventional-commits , a CLI util to ensure these conventions and generate verion and changelogs

Commit Message Formats

Default

@druska
druska / engine.c
Created September 17, 2018 15:18
Quant Cup 1's winning order book implementation
/*****************************************************************************
* QuantCup 1: Price-Time Matching Engine
*
* Submitted by: voyager
*
* Design Overview:
* In this implementation, the limit order book is represented using
* a flat linear array (pricePoints), indexed by the numeric price value.
* Each entry in this array corresponds to a specific price point and holds
* an instance of struct pricePoint. This data structure maintains a list
@kayabaNerve
kayabaNerve / deanon_dero.md
Created May 17, 2024 14:53
Deanonymization of the Dero Network

The Dero Protocol

The protocol uses a pair of rings, one for the senders, one for the receivers, represented as a singular ring. With each transfer, a list of ElGamal ciphertexts is provided for all accounts within the joint ring. This ElGamal ciphertext is formed as r * G, (r * K) + (a * G), where r is some randomness, K is the key for the account the ciphertext is for, and a is the amount.

The Dero Wallet Protocol

Dero offers an 'encrypted message' with every transaction. Even if the user does not explicitly provide one, a message will exist (either with internally provided values or left empty). For the only defined type of message, the message is encoded as the index of the sender, a CBOR-encoded object, and zero-padding. The message is encrypted with the Chacha20 stream created by a key of H(H(r * K) || K) where r is some randomness and K is the key for the account the ciphertext is for.

The Issue

@aaangeletakis
aaangeletakis / How-To-Install-SDL-On-Ubuntu.md
Last active May 18, 2024 15:21
How do I install SDL on ubuntu?

What you need to do to install SDL is:

#install sdl2
sudo apt install libsdl2-dev libsdl2-2.0-0 -y;

#install sdl image  - if you want to display images
sudo apt install libjpeg-dev libwebp-dev libtiff5-dev libsdl2-image-dev libsdl2-image-2.0-0 -y;

#install sdl mixer  - if you want sound
@chriscatuk
chriscatuk / ABRP format.json
Last active May 18, 2024 15:19
Smart #1 OBD2 Command PIDs
{ // Command descriptions from https://www.scantool.net/downloads/98/stn1100-frpm.pdf
"init_commands": {
"command": [
"ATD", // Set all settings to defaults
"ATD0", // Turn printing of CAN DLC off
"ATE0", // Turn off terminal echo
"ATH1", // Turn display of headers on
"ATSP0", // Set OBD protocol preset
"ATM0", // Memory Off
"ATS0", // Print space off
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@AndrewRadev
AndrewRadev / matchfuzzy.vim
Last active May 18, 2024 15:18
A fuzzy-finder in 40 lines of portable Vimscript
" Pick a different highlighting group by adding this in your vimrc:
"
" highlight link fuzzyMatch <group>
"
" The "default" only makes the link if it's not already set.
"
highlight default link fuzzyMatch Search
" The components of the command definition:
"
var mediaJSON = { "categories" : [ { "name" : "Movies",
"videos" : [
{ "description" : "Big Buck Bunny tells the story of a giant rabbit with a heart bigger than himself. When one sunny day three rodents rudely harass him, something snaps... and the rabbit ain't no bunny anymore! In the typical cartoon tradition he prepares the nasty rodents a comical revenge.\n\nLicensed under the Creative Commons Attribution license\nhttp://www.bigbuckbunny.org",
"sources" : [ "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4" ],
"subtitle" : "By Blender Foundation",
"thumb" : "images/BigBuckBunny.jpg",
"title" : "Big Buck Bunny"
},
{ "description" : "The first Blender Open Movie from 2006",
"sources" : [ "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ElephantsDream.mp4" ],
@moyix
moyix / Makefile
Created March 8, 2024 05:26
Claude 3 writes a fuzzer
all: gifread gifread.asan gifread.ubsan gifread.coverage
gifread: gifdec.c gifread.c gifdec.h
$(CC) $(CFLAGS) -o $@ gifdec.c gifread.c $(LDFLAGS)
gifread.asan: gifdec.c gifread.c gifdec.h
$(CC) $(CFLAGS) -g -fsanitize=address -o $@ gifdec.c gifread.c $(LDFLAGS)
gifread.ubsan: gifdec.c gifread.c gifdec.h
$(CC) $(CFLAGS) -g -fsanitize=undefined -o $@ gifdec.c gifread.c $(LDFLAGS)
@Ravarcheon
Ravarcheon / spectralRotation.py
Created May 18, 2024 13:23
rotates an audio file by 90 degrees in the spectrum while being a reversible process with minimal loss (only floating point errors which are like -150 dB but thats literally silence ahaha~)
import numpy as np
import soundfile as sf
from scipy.fftpack import fft, ifft
def rotateSignal(signal,flip):
if flip:
signal = signal[::-1]
x = np.concatenate((signal, signal[1:][::-1])) # concatenating the array with a reverse of itself makes it such that the fourier transform doesn't layer over a reversed version of itself in the inverse fft
rotSig = np.real(ifft(x))