jairoFernandez

Before following the guide, you should be familiar with GPG and Keybase... oh and Linux ofcourse!

The dollar sign($) means the terminal input.

Requirements

- gpg # which is preinstalled in linux
- git
- zsh
- oh-my-zsh

jairoFernandez

#!/usr/bin/env bash
#shellcheck disable=SC2016

set -euo pipefail

if [[ -z "${DOTLY_PATH:-}" ]] || ! output::empty_line > /dev/null 2>&1; then
  red='\033[0;31m'
  green='\033[0;32m'
  bold_blue='\033[1m\033[34m'
  normal='\033[0m'

jairoFernandez

### Keybase proof

I hereby claim:

  * I am jairofernandez on github.
  * I am jairokubeshop (https://keybase.io/jairokubeshop) on keybase.
  * I have a public key ASDaqSsHgv6cTBB8Ll3IR-MYWUkC0jo2_Q1hTOSUctX5vwo

To claim this, I am signing this object:

jairoFernandez

Be Careful with Table Driven Tests and t.Parallel()

We Gophers, love table-driven-tests, it makes our unittesting structured, and makes it easy to add different test cases with ease.

Let’s create our table driven test, for convenience, I chose to use t.Log as the test function. Notice that we don't have any assertion in this test, it is not needed to for the demonstration.

func TestTLog(t *testing.T) {
	t.Parallel()

jairoFernandez

{
  "AL": {
    "name": "Alabama",
    "capital": "Montgomery",
    "lat": "32.361538",
    "long": "-86.279118"
  },
  "AK": {
    "name": "Alaska",
    "capital": "Juneau",

jairoFernandez

console.clear()
// const reducer = (acumulador, valorActual) => nuevoAcumulador
//                                                   valor inicial
// const reducido = [1, 2, 3].reduce((acc, el) => acc + el, 0)
// console.log(reducido) // 6

const numeros = [1, 2, 3, 4, 5]
const resultado = numeros.reduce((acc, el) => acc + el, 0)
// console.log(resultado)

jairoFernandez

import 'dart:math';

var rng = new Random();

void main(List<String> args) {
  final quantity = 1000;
  final stopwatch = Stopwatch()..start();
  final products = createProducts(quantity);
  final users = createUsers(quantity);
  final usersIndexed = indexerListUser(users);

jairoFernandez

indexerListUser(List<dynamic> users) {
  final data = [];
  for (var i = 0; i < users.length; i++) {
    data.add({users[i]['id']: users[i]});
  }
  return data;
}

jairoFernandez

Distro: Ubuntu 20.04.1 LTS (Focal Fossa) 
Machine:   Type: Laptop System: ASUSTeK product: N751JK v: 1.0 serial: <superuser/root required> 
           Mobo: ASUSTeK model: N751JK 
CPU:       Topology: Quad Core model: Intel Core i7-4710HQ bits: 64 type: MT MCP L2 cache: 6144 KiB 
           Speed: 2503 MHz min/max: 800/3500 MHz Core speeds (MHz): 1: 2494 2: 2494 3: 2494 4: 2494 5: 2495 6: 2495 7: 2497 
           8: 2495 
Graphics:  Device-1: Intel 4th Gen Core Processor Integrated Graphics driver: i915 v: kernel 
           Device-2: NVIDIA GM107M [GeForce GTX 850M] driver: nouveau v: kernel 
           Display: x11 server: X.Org 1.20.8 driver: modesetting unloaded: fbdev,vesa 
           resolution: 1920x1080~60Hz, 1920x1080~60Hz, 1600x900~60Hz 

jairoFernandez

badCombinatorFunction(List<dynamic> products, List<dynamic> users) {
  final data = [];
  for (var i = 0; i < products.length; i++) {
    final user = users.firstWhere((u) => u['id'] == products[i]['user']);
    data.add({
      "id": products[i]['id'],
      "name": products[i]['name'],
      "user": user,
    });