Ray Jasson rayjasson98

GROKKING NOTES

I liked the way Grokking the coding interview organized problems into learnable patterns. However, the course is expensive and the majority of the time the problems are copy-pasted from leetcode. As the explanations on leetcode are usually just as good, the course really boils down to being a glorified curated list of leetcode problems.

So below I made a list of leetcode problems that are as close to grokking problems as possible.

Pattern: Sliding Window

Default

Powerlevel10k

Notes on Refactoring by Martin Fowler

.gitkeep

A .gitkeep file tells github to do the opposite of its default behaviour, which is to ignore empty folders.

If you want to track an empty folder, or a folder with untracked files, create a 0kb file with the .gitkeep file extension in that folder.

touch FOLDER_NAME/.gitkeep

Avoiding HOC; Favoring render props

The React community is moving away from HOC (higher order components) in favor of render prop components (RPC). For the most part, HOC and render prop components solve the same problem. However, render prop components provide are gaining popularity because they are more declarative and flexible than an HOC.

	// ==UserScript==
	// @name youtube popup killer
	// @namespace http://tampermonkey.net/
	// @version 0.3
	// @description try to take over the world!
	// @author Selbereth
	// @match https://.youtube.com/
	// @icon https://www.google.com/s2/favicons?sz=64&domain=youtube.com
	// @grant none
	// ==/UserScript==

	# app/jobs/geocode_job.rb

	class GeocodeJob < ApplicationJob
	def perform(model)
	model.geocode
	end
	end

	Open file below, tested with the version 4.17 and 4.18:

	/Applications/pgAdmin\ 4.app/Contents/Resources/web/config.py

	and then find the line contains: "MASTER_PASSWORD_REQUIRED" and change the parameter into "False"

	Note: The folder location for Windows is in the comments.

	from io import BytesIO
	from pprint import pprint as pp

	import requests
	from PIL import Image
	import matplotlib
	matplotlib.use('Agg')
	import matplotlib.pyplot as plt

	import 'package:flutter/material.dart';

	void main() => runApp(TestApp());

	class TestApp extends StatelessWidget {
	@override
	Widget build(BuildContext context) {
	return MaterialApp(
	theme: ThemeData(
	primaryColor: Colors.green[900],