Learn ELM with Real Code Examples

Install Elm via npm or package manager

Verify installation with 'elm --version'

Initialize project using 'elm init'

Set up project directories (src, tests, elm.json)

Compile and run Elm code with 'elm make'

Install Elm via npm

Initialize project with 'elm init'

Install elm-test for testing

Set up src/ directory for modules

Verify setup using Elm Reactor or compilation

elm.json project configuration

src/Main.elm entry point

Module files in src/

Static assets (HTML, CSS, images)

Test files for elm-test

elm init

elm make src/Main.elm

elm reactor

elm test

elm-format src/*.elm --yes

Support for Unicode in text

Date, number, and locale handled via external libraries

Text translations managed via custom types and modules

No built-in i18n system

Integration possible with JSON translation files

Accessible via Elm Reactor or compiled JS

Pure functional code reduces runtime errors

Support for keyboard and ARIA attributes via Html module

Integrates with existing web accessibility standards

Small but helpful community resources

Use HTML and CSS for presentation

Elm Html module generates DOM nodes

Use elm-css or Tailwind for styling

View functions describe UI declaratively

Components are pure functions of Model

Immutable Model holds state

Update function modifies state in pure way

Messages (Msg) trigger updates

Side effects isolated in Cmd

Subscriptions manage external inputs/events

Algebraic data types and records

Immutable collections (List, Array, Dict)

Pattern matching for data decomposition

Messages to encode events

External data via HTTP requests or WebSockets