What is Elm?
Elm is a programming language. It is a purely functional language that compiles to JavaScript. Developers can use this language for different purposes.
Main uses of Elm
Some of the services of Elm language are as follows:
- It is useful in front-end Development.
- It is useful for building web-based graphical user interfaces.
- It is useful for building web applications.
- It is useful for building websites.
Why a functional language?
Some benefits of using a functional language like Elm are as follows:
- It gives no runtime errors in practice.
- It gives obliging error messages.
- It provides definitive refactoring.
- It can automatically enforce semantic versioning for all Elm packages.
Code example
Below is a simple hello world program in Elm language:
{
"type": "application",
"source-directories": [
"src"
],
"elm-version": "0.19.0",
"dependencies": {
"direct": {
"elm/browser": "1.0.1",
"elm/core": "1.0.2",
"elm/html": "1.0.0",
"elm/time": "1.0.0",
"elm/http": "2.0.0",
"elm/json": "1.1.3"
},
"indirect": {
"elm/url": "1.0.0",
"elm/virtual-dom": "1.0.2",
"elm/bytes": "1.0.8",
"elm/file": "1.0.5"
}
},
"test-dependencies": {
"direct": {},
"indirect": {}
}
}Simple hello world code in Elm
Code explanation
- Line 3: We import the
Html exposing (text)library for printing text. - Line 5: We print the string
Hello, World!.
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