Learn Elm, Firebase and Svgo

`elm-ui` is a language for layout and interface design. This is a novel iteration on declarative styling where you can use Elm types and functions to define your UI in a declarative way.

The novel part is that it does not require you to know CSS to be used. The API is very simple and can be learned quickly!

The approach taken by `elm-ui` is based on two big ideas: 
Getting the compiler to verify as much of the layout and styling as possible by defining them in Elm code
Enabling refactoring capabilities of Elm for UI code


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.

Declarative UIs without CSS with elm-ui

In this course, we will dive into a number of different ways we can create, optimize and integrate an SVG icon set. There are pros and cons to each method, so we’ll dissect each approach so you can make an informed decision for your project. We will learn how to use build tools to automate the process of creating, manipulating and optimizing icons. We’ll take a look at how to use CSS to manipulate styles on an SVG and even how to integrate your SVG icons in a React project.

Scalable Vector Graphics (SVG) is an XML-based vector image format for two-dimensional graphics with support for interactivity and animation. The SVG specification is an open standard developed by the World Wide Web Consortium (W3C) since 1999. SVG images and their behaviors are defined in XML text files.

svgo

Create an SVG Icon System

Elm is a beginner friendly functional reactive programming language for building web applications. It contains a small but powerful set of language constructs, such as, static types, algebraic data types, immutability, and pure functions. Elm provides and requires the use of a specific architecture that’s well suited for sensible application construction. Elm’s type system and architecture may feel constraining at first, but they ultimately provide the programmer with some neat benefits including comprehensible code, and a much improved refactoring experience.

In this course you will learn the basic fundamentals of Elm so that you can start building applications today.

Start Using Elm to Build Web Applications

Protect yourself from unexpected charges by learning how to use Firebase emulators. 

By using Firebase emulators you no longer have to create a second dev firebase project to avoid using production data. You also don't run the risk of having a cloud function crash and run up a huge bill.

In this course, you'll learn how to set up and use Firebase's authentication, function, and Firestore emulators. You will also learn how to safely set up Cloud Function emulation, import seed data into your emulators, and disable the emulators in production.  

By the end of this course, you'll be able to confidently set up a safe environment for testing in your own applications!

firebase

Local App Development with the Firebase Emulator Suite

Functions are an important building block in Elm. In this lesson we will review stateless functions, function composition, anonymous functions, Currying, and more.

Functions in Elm

Getting Elm installed. We will install the Elm CLI with npm. This gives us access to `elm-repl` and `elm-reactor`. The repl lets us play with expressions at the command-line, and reactor starts a development server which builds Elm files on-demand.

Install the Elm Platform command-line tools

This lesson shows a super simple, yet pleasant, look at the smallest Elm example. We will use the text function from the Html module to display text in a browser.


Output text in a browser using the text function in Elm

A record is a set of key-value pairs, similar to objects in Javascript. Record fields can be accessed through dot-notation, or special access functions. Records are fully type-checked and can be described by type aliases.

Store key-value pairs using Records in Elm

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.

Write functions and Type Signatures in Elm

Elm provides a declarative way to produce DOM elements and react to DOM events, similar to HTML. Learn how to get Web content on the screen by writing functions that take in data and return Elm’s version of HTML.

Render HTML in the browser using the Html module in Elm

Sometimes a function is useful for many different types. Instead of writing a copy of that function for each different type, learn to use type variables and allow the same function to be reused.

Reuse Functions Through Type Variables in Elm

Elm is designed specifically for building applications, and it is built around a scalable and sensible application architecture. Learn the very basics of this architecture through updating application state by reacting to DOM events.

Create Apps Using the Elm Application Architecture

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.

Elm packages aren't working with embedded **Ellie**, so I've provided you with a link to the Ellie example [here](https://ellie-app.com/nNVB6RrbZa1/9). 

Discover New Packages Using the Elm Package Index

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 useful.

Using "Maybe" in Elm for values that may or may not exist

Just like a bitmap image, you can compress an SVG by removing various pieces of code that aren’t necessary to it rendering properly. This reduces file size & download time, ultimately leading to a faster page load speed. You’ll learn how to automate the process of compressing your SVGs using `svgo` in the command line.

For a full list of options and plugins available to use with `svgo`, [check out their documentation](https://github.com/svg/svgo).

Note: This lesson assumes you have `npm` installed.

Optimize SVGs for Better Performance using svgo

In this lesson, we’ll explore the process of combining all of your SVG icons into one SVG sprite, to be included directly into markup. We’ll use the command line, along with the `svgo` and `svg-sprite-generator` npm packages to automate the process of compressing the SVGs and creating the sprite.

_Note:_ This lesson assumes you have `npm` installed.

Combine Multiple SVGs into an SVG Sprite

The Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypermedia information systems. It is a generic, stateless, protocol which can be used for many tasks beyond its use for hypertext, such as name servers and distributed object management systems, through extension of its request methods, error codes and headers.

http

Understand the three basic parts of making HTTP requests in Elm: 1) Building the request, 2) Writing a JSON decoder, 3) Sending the request using the Elm runtime, and reacting to the results with messages.

HTTP requests are just pieces of data in Elm. When we want to send them, we hand them off to Elm's runtime, and it notifies us when the request is done. An important part of working with HTTP requests that fetch JSON is JSON decoding, the process by which we can turn untyped JSON data into Elm types that are safe to work with.

Specs:

- Editor: Atom
- Theme: [Nebula (with Nebula syntax theme)](https://atom.io/themes/nebula-ui)
- Font: [Iosevka with ligatures enabled](https://github.com/be5invis/Iosevka)
- Plugin used for imports: [Elmjutsu](https://atom.io/packages/elmjutsu)
- Plugin used for formatting: [Elm-format](https://atom.io/packages/elm-format)
- Plugin used for linting: [linter-elm-make](https://atom.io/packages/linter-elm-make)


Make an HTTP Request in Elm

Lists are used in Elm to represent sequences of data. The List library comes with a toolbox of useful functions. Here we cover list transformation (map), and getting single values from lists (fold).


Sequencing Data With Lists in Elm

AngularJS is an open-source JavaScript framework, maintained by Google, that assists with running single-page applications. Its goal is to augment web-based applications with model–view–controller (MVC) capability, in an effort to make both development and testing easier.

angularjs

The Firebase Forge provides a convenient GUI for visualizing and manipulating your data in real-time. Be sure to check out [this lesson](https://egghead.io/lessons/angularjs-get-started-with-firebase-and-angularfire) for getting Firebase setup.

Updating Real-Time Data with Firebase Forge

When using Firebase collections in your AngularJS application, you have access to a handy set of events emitted by the collection when changes in your data occur. Be sure to check out the [first lesson](https://egghead.io/lessons/angularjs-get-started-with-firebase-and-angularfire) in this series for the project source code.

Firebase Event Handling

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.