This course is a beginner’s guide to functional programming concepts and an introduction to Elixir.

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elixir.tar.gz

Elixir

Elixir-SPA

Elixir-SPA-cleared

Elixir script

Elixir-SPA-script

Elixir-SPA-copy all

Elixir-SPA-copy all-dungeon

Elixir-test

Elixir-SPA-test

Elixir is a functional programming language that runs in the Erlang VM, a powerful environment to run distributed systems. This course uses Elixir because of its fun syntax, vibrant community, and production-ready tooling. Elixir syntax lets you focus on what’s important while learning functional programming.

Starting from scratch, you will learn the fundamentals of Elixir including expressions, modules, conditional statements, and recursion. Towards the end of the course, you will focus on more advanced material like higher-order functions, how to handle impure functions, and lastly how to design an application using Elixir and functional programming principles.

By the end, you will be able to write basic Elixir programs that follow the functional programming paradigm.

Learn Functional Programming with Elixir

## `for`
Elixir has the `for` special form that offers a shortcut syntax over the most basic operations of enumerables, it is also known as a **comprehension**. We can iterate, map, and filter easily. Take a look:

```Elixir
iex> for a <- ["dogs", "cats", "flowers"], do: String.upcase(a) 
#Output -> ["DOGS", "CATS", "FLOWERS"]
```

The expression after `for` is a generator expression that will assign each item of the list to the variable `a`. The result of the expression in the `do` option will be in the new list. We can have more than one generator:

```Elixir
iex> for a <- ["Willy", "Anna"], b <- ["Math", "English"], do: {a, b}
#Output -> [{"Willy", "Math"}, {"Willy", "English"}, {"Anna", "Math"}, {"Anna", "English"}]
```

We’ve associated each student with a discipline using two generators. 

# `for`
Elixir has the `for` special form that offers a shortcut syntax over the most basic operations of enumerables, it is also known as a **comprehension**. We can iterate, map, and filter easily. Take a look:

```Elixir
iex> for a <- ["dogs", "cats", "flowers"], do: String.upcase(a) 
#Output -> ["DOGS", "CATS", "FLOWERS"]
```

The expression after `for` is a generator expression that will assign each item of the list to the variable `a`. The result of the expression in the `do` option will be in the new list. We can have more than one generator:

```Elixir
iex> for a <- ["Willy", "Anna"], b <- ["Math", "English"], do: {a, b}
#Output -> [{"Willy", "Math"}, {"Willy", "English"}, {"Anna", "Math"}, {"Anna", "English"}]
```

We’ve associated each student with a discipline using two generators. 

Getting Started

Introduction to Functional Programming

Working with Variables and Functions

Using Pattern Matching to Control Program Flow

Diving into Recursion

Using Higher-Order Functions

Designing Your Elixir Applications

Handling Impure Functions

Conclusion

Appendices

Using Comprehensions

`for`