Roc-Fundamentals

Hello World in Roc

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

The Code

Create a file named main.roc:

app [main!] { cli: platform …

Variables and Types in Roc

Roc is a purely functional language, and like its cousins Elm and Haskell, it has no mutable variables. Every binding is a permanent name for a value — once name = "Alice" is written, name …

Operators in Roc

Operators are the symbols that combine values into expressions: adding numbers, comparing them, and chaining boolean conditions. Because Roc is a purely functional language, an operator is really just …