Elm is a programming language that provides a clean functional syntax for writing HTML web applications. It promises zero runtime exceptions, fast rendering, time-travel debugging, and much more.
List are an important collection in Elm. In this lesson we learn to create list as well as apply functions to filter, add, and transform them.
Records are important data structures in Elm. In this lesson we learn to create a record as well as describe the record by creating a type. We will also see how these new types can be used to clean...
Functions are an important building block in Elm. In this lesson we will review stateless functions, function composition, anonymous functions, Currying, and more.
Before writing any Elm we need to first install the runtime locally. In this lesson we install the Elm runtime locally and set up a simple application to verify everything is working properly.
Decoding JSON strings in Elm is a 2-step process: Create a "recipe" for the decoding Perform the decoding This lesson gives a couple basic examples of the two steps in action.
Notice: This lesson uses Elm 0.17! Here's a document about the important differences between 0.16 and 0.17. This lesson gives a rapid-paced introduction to what's known as the Elm Application Ar...
Elm includes a data type called Maybe which is useful for working with values that may, or may not exist. This lesson shows a simple case where maybe types are encountered, and how to make them use...
This lesson will take you from nothing to a small Elm app that prints text to the browser.
We are going to take a high-level look at what an Elm application looks like? We show how to structure apps, as well as, Elm’s elegant syntax by building a small app.
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Functions are one of the core building blocks of Elm. In this lesson we learn how to define, call, pass parameters, receive parameters, partially apply functions, compose functions, and add correct type signatures. In this lesson we will show how to define functions with type signatures.
Elm comes with an index of publicly-usable open-source packages. Using packages from this index can substantially improve a developer’s experience. Learn how to find a package through the index, understand its API through type annotations and documentation, download it, and use it in a project.
Notice: This lesson uses Elm 0.17!
This lesson gives a rapid-paced introduction to what's known as the Elm Application Architecture. You can read about it in greater detail here:
We'll build a counter that utilizes the standard Elm combination of a model, a view, and update function.
See the linked code for a good starting place.