modules

ES6 modules organize code into separate files with export and import statements. I use export default for single main export and export { name } for named exports. The import { name } from './module.js' syntax imports specific exports. Using import *

Terraform modules encapsulate related resources into reusable, composable packages. A module is simply a directory with .tf files. The root module calls child modules with the module block. Input variable blocks parameterize modules. output blocks exp

Ruby modules enable code sharing across classes without inheritance. I use include for instance methods, extend for class methods. prepend inserts module before class in method lookup. Concerns organize shared behavior—validations, scopes, association

Rust's module system uses mod to define modules and pub to control visibility. Modules can be inline (mod name { ... }) or in separate files (mod name; loads name.rs). By default, items are private; use pub to expose them. I organize code into modules