rpn3319

const EventEmitter = require('events');

class MyEmitter extends EventEmitter {
  constructor() {
    super();

    // use nextTick to emit the event once a handler is assigned
    process.nextTick(() => {
      this.emit('event');
    });

rpn3319

import { useContext, createContext } from 'react';

const BorderContext = createContext(1);

function Button({ children }) {
  const borderWidth = useContext(BorderContext);
  const style = {
    border: `${borderWidth}px solid black`,
    background: 'transparent',
  };

rpn3319

package main

import (
	"fmt"
	"sync"
)

type Store struct {
	mu sync.Mutex
	urls map[string]bool

rpn3319

function parseStrNumber(input) {
  if (typeof input === 'number') return input;
  if (typeof input !== 'string' || !input) return NaN;

  let out = 0;

  const l = input.length;
  let pointIndex = input.length - 1;
  let isNegative = false;

rpn3319

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 3.0"
    }
  }
}

# Configure the AWS Provider

rpn3319

Big O Notation

• Theory about Big O: https://www.learnhowtoprogram.com/computer-science/big-o-notation-and-binary-trees/big-o-notation
• Practice Big O: https://www.learnhowtoprogram.com/computer-science/big-o-notation-and-binary-trees/big-o-practice
• Big O Cheatsheet: https://www.bigocheatsheet.com/
• Know about Runtime complexity and Space complexity
• Common Big O runtimes
  • Efficient
    • O(1): Constant time
• O(log(N)): Logarithmic time

rpn3319

• Latency Numbers Every Programmer Should Know: https://gist.github.com/jboner/2841832

rpn3319

resource "aws_s3_bucket" "b" {
  bucket = "my-app-test"
}

resource "aws_s3_bucket_policy" "b" {
  bucket = aws_s3_bucket.b.id

  # Terraform's "jsonencode" function converts a
  # Terraform expression's result to valid JSON syntax.
  policy = jsonencode({

rpn3319

# Init the project after create main.tf
terrform init

# To validate the syntax
terrform validate

# Run without effect the real world
# Use to see how the configs effect the world
terrform plan

rpn3319

select
  table_name,
  table_type,
  table_schema
from
  information_schema.tables
where
  table_type = 'BASE TABLE'
  and table_schema = 'public'