Tbh I had no idea this was even a thing until recently. I've been working with Rails for a while now and somehow never came across it. So let me explain it the way I understood it. You know how we normally do associations in Rails, User has many Posts, Post belongs to User. Two different models, two different tables. Simple. But what if a model needs to reference itself? Like same table, same mode
Purpose of Variables in Terraform Variables prevent repetitive hardcoding of values in Terraform configuration files. They reduce errors due to inconsistent value entries across multiple resources. Simplify updating environment-specific configurations (e.g., changing from dev to stage). Types of Variables Based on Purpose Input Variables: Accept values from users or other sources. Output Variables
Comments
Why I built another Ruby test runner inspired by Playwright Test Ruby already has great testing tools. If you are building Rails applications today, you probably use one of these combinations: RSpec + Capybara Minitest + Capybara Rails system tests Maybe Selenium, Cuprite, Ferrum, or Playwright through Ruby bindings These tools are mature, battle-tested, and widely used. So the natural question
Go tem duas formas de declarar variáveis: var e :=. Elas existem por motivos diferentes e têm regras diferentes. Saber quando cada uma se aplica evitamos erros bobos e código que não compila. var (forma longa) var x int // tipo explícito, recebe o zero value var x int = 5 // tipo e valor var x = 5 // valor com tipo inferido var x, y = 1, 2 // múltiplas variáveis