Andre Alves Leocadio Hiweus

Activate windows

Keys

Pro: W269N-WFGWX-YVC9B-4J6C9-T83GX
Pro N: MH37W-N47XK-V7XM9-C7227-GCQG9
Home: TX9XD-98N7V-6WMQ6-BX7FG-H8Q99
Home N: 3KHY7-WNT83-DGQKR-F7HPR-844BM

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

Fetch the last messages in each group by the attribute name

SELECT m1.*
FROM messages m1 LEFT JOIN messages m2
 ON (m1.name = m2.name AND m1.id < m2.id)
WHERE m2.id IS NULL;

Configure nginx to use ssl

Generating certificates

# generate .crt and .key files
sudo openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/ssl/private/nginx-selfsigned.key -out /etc/ssl/certs/nginx-selfsigned.crt

# generate strong Diffie-Hellman group
sudo openssl dhparam -out /etc/ssl/certs/dhparam.pem 2048

To create a custom mouse script in nautilus just put your script in ~/.local/share/nautilus/scripts/ and make sure it's executable.

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Document</title>
	<link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/leaflet.css"
	integrity="sha256-p4NxAoJBhIIN+hmNHrzRCf9tD/miZyoHS5obTRR9BMY="
	crossorigin=""/>
	<script src="https://unpkg.com/[email protected]/dist/leaflet.js"

	import { useState } from 'react'
	import { Button, Spinner } from 'react-bootstrap'

	function AsyncButton({ onClick, children, externalLoading = false, ...props }) {
	const [internalLoading, setInternalLoading] = useState(false)

	const handleClick = async () => {
	setInternalLoading(true)
	await onClick?.()
	setInternalLoading(false)

	/*
	* the first implementation is simpler but not much smart because, if a pattern long than value is passed
	* to function all remaining pattern will be write to outputValue and not crop immediately
	* for all purposes use second function, the first one is only a option more compact for understanding
	*/
	function makeString(value, pattern) {
	let position = 0
	return pattern.replace(/#/g, () => {
	if(position >= value.length) {
	return ''

	const camelToSnakeCase = str => str.replace(/[A-Z]/g, letter => `_${letter.toLowerCase()}`);

	function mapFieldsToStorageName(name) {
	const map = new Map()
	map.set('userId', 'owner_id')
	return map.get(name) ?? camelToSnakeCase(name)
	}

	function generateQuery(tableName, filters, ordering, options) {
	const values = []

	var linhas = `Abandonada por você
	Tenho tentado te esquecer
	No fim da tarde, uma paixão
	No fim da noite, uma ilusão
	No fim de tudo, a solidão
	Apaixonada por você
	Tenho tentado não sofrer
	Lendo antigas poesias
	Rindo em novas companhias
	E chorando por você