Skip to content

Instantly share code, notes, and snippets.

View RickWong's full-sized avatar

Rick Wong RickWong

  • Amsterdam
  • 05:18 (UTC +02:00)
  • X @ryguw
View GitHub Profile
@JakeCoxon
JakeCoxon / aoc2021.py
Last active March 8, 2023 23:05
Advent of Code 2021
# Python 2 only because they removed lambda argument unpacking in 3.0
import math, sys
from functools import reduce
from itertools import izip_longest
# AOC Day 1 part 1
print(len((lambda nums: [1 for x, y in zip(nums[:], nums[1:]) if y > x])
([int(x) for x in open("input1.txt").read().split()])))
# AOC Day 1 part 2
import os
import pickle
import warnings
import numpy as np
import pandas as pd
from sklearn.model_selection import train_test_split
from tensorflow.keras.callbacks import EarlyStopping
from tensorflow.keras.layers import Dense
from tensorflow.keras.layers import Dropout
@raysan5
raysan5 / custom_game_engines_small_study.md
Last active May 7, 2024 19:39
A small state-of-the-art study on custom engines

CUSTOM GAME ENGINES: A Small Study

a_plague_tale

A couple of weeks ago I played (and finished) A Plague Tale, a game by Asobo Studio. I was really captivated by the game, not only by the beautiful graphics but also by the story and the locations in the game. I decided to investigate a bit about the game tech and I was surprised to see it was developed with a custom engine by a relatively small studio. I know there are some companies using custom engines but it's very difficult to find a detailed market study with that kind of information curated and updated. So this article.

Nowadays lots of companies choose engines like Unreal or Unity for their games (or that's what lot of people think) because d

@munificent
munificent / generate.c
Last active May 7, 2024 06:19
A random dungeon generator that fits on a business card
#include <time.h> // Robert Nystrom
#include <stdio.h> // @munificentbob
#include <stdlib.h> // for Ginny
#define r return // 2008-2019
#define l(a, b, c, d) for (i y=a;y\
<b; y++) for (int x = c; x < d; x++)
typedef int i;const i H=40;const i W
=80;i m[40][80];i g(i x){r rand()%x;
}void cave(i s){i w=g(10)+5;i h=g(6)
+3;i t=g(W-w-2)+1;i u=g(H-h-2)+1;l(u
@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
@SimonAlling
SimonAlling / algebraic.ts
Last active October 24, 2023 21:00
Algebraic Data Types in TypeScript
// Types:
type Just<T> = { Just: T }
type Nothing = {}
type Maybe<T> = Just<T> | Nothing
type Left<L> = { Left: L }
type Right<R> = { Right: R }
type Either<L, R> = Left<L> | Right<R>
// For convenience:
@xsot
xsot / instructions.md
Last active March 3, 2024 13:42
sed maze solver

Usage

sed -E -f solver.sed input where input is a file containing the maze.

For best results, resize your terminal to match the height of the maze. To disable animations, delete the lines containing p.

Maze format

The solver assumes the following:

  • The maze only contains the characters # \nSE
  • Every line has the same number of characters
  • There is only one start (S) and end (E)
@threepointone
threepointone / deep-string.js
Last active March 13, 2019 20:09
deep update of text in a react component
import React from 'react'
import { render } from 'react-dom'
// with fiber, we'll be able to write components that update text deep
// inside another string without wrapper dom, or rerendering the whole component
// before
class Lorem extends React.Component {
state = {
str: ''
@kharandziuk
kharandziuk / article.md
Last active March 2, 2021 03:41
Node.js Streams and Reactive Programming Primer

This article shows how to apply Node.js Stream and a bit of Reactive programming to a real(tm) problem. The article is intended to be highly practical and oriented for an intermediate reader. I intentionally omit some basic explanations. If you miss something try to check the API documentation or its retelling(e.g.: this one)

So, lets start from the problem description. We need to implement a simple web scraper which grabs all the data from some REST API, process the data somehow and inserts into our Database. For simplicity, I omit the details about the actual database and REST API(in real life it was the API of some travel fare aggregator website and a Pg database)

Consider we have two functions(code of the IO simulator functions and the other article code is here):

getAPI(n, count) // pseudo API ca
@sj26
sj26 / LICENSE.md
Last active March 8, 2024 18:31
Bash retry function

This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.

In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit