elchroy

Problem

You have installed GPG, then tried to commit and suddenly you see this error message after it:

error: gpg failed to sign the data
fatal: failed to write commit object

Debug

elchroy

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

elchroy

Colonizer

An extension to add semicolons or anything you want at the end of a line
https://marketplace.visualstudio.com/items?itemName=uriberman.colonizer

Go To Method

Adds the ability to go to only method symbols declared in the active document
https://marketplace.visualstudio.com/items?itemName=trixnz.go-to-method

Indent on Paste

Re-indents pasted code to match the destination\

elchroy

# Script to generate a new block every minute
# Put this script at the root of your unpacked folder
#!/bin/bash

echo "Generating a block every minute. Press [CTRL+C] to stop.."

address=`./bin/bitcoin-cli getnewaddress`

while :
do

elchroy

$aliceblue: #f0f8ff;
$antiquewhite: #faebd7;
$aqua: #00ffff;
$aquamarine: #7fffd4;
$azure: #f0ffff;
$beige: #f5f5dc;
$bisque: #ffe4c4;
$black: #000000;
$blanchedalmond: #ffebcd;
$blue: #0000ff;

elchroy

// Challenge 1

function sayHello() {
  setTimeout(() => console.log('Hello'), 1000);
}

// Uncomment the line below when ready
sayHello(); // should log "Hello" after 1000ms

elchroy

<?php

$arr = [1, 2, 3, 4, 5];

function rotLeft($a, $d) {
	$res = [];	
	$count = count($a);

	array_walk($a, function ($e, $i) use (&$a, $d, $count, &$res) {
		$res[$i] = $a[($i+$d)%$count];

elchroy

<?php

function reverseArray($a) {
    $len = count($a);
    $i = 0;
    $res = [];
    while ($i < $len) {
        $j = abs($i - $len) - 1;
        $res[] = $a[$j];
        $i++;

elchroy

// Write a function, makeChange, that returns an integer
// that represents the least number of coins that add up
// to an amount where the amount is always divisible by 5

const availableCoins = {
	5: 0,
	10: 0,
	25: 0
}

elchroy

  module.exports = {
	isUnique (arr) {
		let result = true;
		let count = 0;

		for (let i = 0; i < arr.length; i++) {
			console.log(`OUTER LOOP ~~~~ i === ${i}`);
			for (let j = 0; j < arr.length; j++) {
				console.log(`INNER LOOP ~~~~ j ==== ${j}, and ${++count}`);
				// apart from the current index where i and j are equal