Jayesh Chandrapal jayeshcp

Phaser 4 Crash Course — Code Reference

Phaser 4 ("Caladan", released April 2026) keeps the same public API you know from Phaser 3 for standard game objects — sprites, text, physics, input, tilemaps, etc. The big changes are under the hood (a full WebGL render-node rewrite) plus a few new/renamed systems: unified Filters (replacing FX + Masks), a simplified Lighting API, an overhauled Tint system, and rounded-corner rectangles. Those are called out inline below.

<!-- CDN (un-minified / minified) -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/phaser/4.1.0/phaser.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/phaser/4.1.0/phaser.min.js"></script>

Jest Unit Testing Cheatsheet

links: home docs

Globals

docs

Kafka - Docker Compose

Run docker container in shell

docker exec -it <container id> /bin/sh

Kafka Home

JavaScript Questions

1. What's the output?

function sayHi() {
 console.log(name);

REST Requests using curl

GET:

curl 
  -X "GET" 
  http://localhost:3000/api

To discard changes in working directory:

git checkout -- < file >

To unstage file:

> git reset HEAD < file >

	import React, { useState, useEffect } from 'react';

	/* Custom hook */
	function useAPIFetch(apiURL) {
	const [loading, setLoading] = useState(true);
	const [data, setData] = useState(null);

	function fetchData() {
	setLoading(true);
	fetch(apiURL)

	// In this implementation it is assumed that grid is always 9x9
	function sudoku2(grid) {
	// check rows
	for(let row = 0; row < grid.length; row++) {
	const numbersMap = new Set();
	for(let column = 0; column < grid[row].length; column++) {
	if(grid[row][column] === ".") continue;
	if (numbersMap.has(grid[row][column])) {
	return false;
	} else {

	from numpy import unique
	from numpy import where
	from matplotlib import pyplot
	from sklearn.datasets import make_classification
	from sklearn.cluster import KMeans

	if __name__ == '__main__':
	# initialize the data set we'll work with
	training_data, _ = make_classification(
	n_samples=2000,

	[mergetool]
	prompt = false
	keepBackup = false
	keepTemporaries = false

	[merge]
	tool = winmerge

	[mergetool "winmerge"]
	name = WinMerge