WagnerMoreira

{
  "[html]": {
    "editor.defaultFormatter": "esbenp.prettier-vscode"
  },
  "[javascript]": {
    "editor.defaultFormatter": "esbenp.prettier-vscode"
  },
  "[javascriptreact]": {
    "editor.defaultFormatter": "esbenp.prettier-vscode"
  },

WagnerMoreira

function leftPad(str, padLength) {
    const arr = str.split(" ")
    Array.from(Array(padLength).keys()).forEach(x => arr.push(" "))
    return arr.reverse().join().replace(/,/g, '')
}

const isArray = (x) => x.hasOwnProperty('length');

const isPositiveInt = (n) => n > 0;

WagnerMoreira

import {SetStateAction, useCallback} from 'react';
import {create} from "zustand";

export type EqualityFn<T> = (left: T | null | undefined, right: T | null | undefined) => boolean;

// eslint-disable-next-line @typescript-eslint/ban-types
const isFunction = (fn: unknown): fn is Function => (typeof fn === 'function');

/**
 * Create a global state

WagnerMoreira

Rails naming conventions

General Ruby conventions

Class names are CamelCase.

Methods and variables are snake_case.

Methods with a ? suffix will return a boolean.

WagnerMoreira

// Example: https://codepen.io/marcelo-ribeiro/pen/OJmVOyW

const accentsMap = new Map([
  ["A", "Á|À|Ã|Â|Ä"],
  ["a", "á|à|ã|â|ä"],
  ["E", "É|È|Ê|Ë"],
  ["e", "é|è|ê|ë"],
  ["I", "Í|Ì|Î|Ï"],
  ["i", "í|ì|î|ï"],
  ["O", "Ó|Ò|Ô|Õ|Ö"],

WagnerMoreira

Global configuration

git config --global user.name 'your_github_username'
git config --global user.email 'your_github_email'

Shortcuts

(Run the command below in your terminal to open the config file using VScode)

code ~/.gitconfig

WagnerMoreira

import React from 'react';
import {withRouter} from 'react-router-dom';
import PropTypes from 'prop-types';

/**
 * A replacement component for the react-router `Prompt`.
 * Allows for more flexible dialogs.
 *
 * @example
 * <NavigationPrompt when={this.props.isDirty}>

WagnerMoreira

node --inspect --trace_gc src/server

In another tab

ab -r -k -n 1000 -c 200 -H "user-agent:Googlebot/2.1 (+http://www.googlebot.com/bot.html)" http://localhost:8000/programs

WagnerMoreira

// regular version

let dragon = (name, size, element) => 
  name + 'is a ' +
  size + ' dragon that breathes ' +
  element + '!';

//usage // usage dragon('zezinho', 'small', 'ice');

// currying version

WagnerMoreira

const solution = (numbers) => {
    // returns zero if no numbers are undefined
    if (!numbers.length) {
        return 0;
    }
    
    const length = numbers.length;
    let current, next, largestNumber = 0;
    const first = numbers[0];
    const last = numbers[length - 1];