Elixir-Fundamentals

Hello World in Elixir

Every programming journey starts with Hello World. Let’s write our first Elixir program.

The Code

Create a file named hello.exs:

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IO.puts("Hello, World!")

That’s it! One …

Variables and Types in Elixir

March 22, 2026 elixir variables types data-types

Elixir is a dynamically typed, functional language where all data is immutable. Rather than assigning values to variables in the traditional sense, Elixir uses pattern matching with the = operator to …

Operators in Elixir

May 18, 2026 elixir operators expressions arithmetic

Operators in Elixir are not just syntactic sugar for arithmetic — they are the everyday vocabulary you use to compose functional pipelines, match values, and transform immutable data. As a functional …

Control Flow in Elixir

June 1, 2026 elixir control-flow conditionals loops if-else

Control flow is how a program decides what to do next. Most languages reach for if, for, and while to make those decisions. Elixir has if, but as a multi-paradigm functional language it leans on tools …

Functions in Elixir

June 18, 2026 elixir functions methods subroutines

In Elixir, functions are the fundamental unit of code. As a functional language, Elixir treats functions as first-class values: you can bind them to variables, pass them as arguments, return them from …

I/O Operations in Elixir

July 4, 2026 elixir io input output files

Input and output are where a program meets the outside world—the terminal, files on disk, and other processes. Elixir treats I/O the way it treats everything else: as functions that transform data. …

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