The Korrin guide

A hands-on introduction. Read it front to back once; keep the specification open afterwards as a reference.

Every code block below is run by CI, so what you see is what Korrin does.

1. Getting started — install, run a file, use the REPL.
2. Values — numbers, strings, booleans, nil, lists, maps.
3. Control flow and functions — if, loops, fn, closures.
4. Classes — objects, methods, inheritance, super.
5. A worked example — a small program, start to finish.

The whole language on one page

• Blocks are indentation; a newline ends a statement. No braces, no semicolons.
• 19 keywords: and break class continue elif else false fn for if in nil not or pass return super true while.
• # starts a comment.
• Assignment is bare: x = 1. No let.
• Every string interpolates: "hi {name}"; {{ is a literal brace.
• Operations on str / list / map are methods: xs.push(v), text.trim(), m.keys(), x.len(). print, str, int, range, … stay functions.
• Only nil and false are falsy.
• / always gives a float; integer overflow is an error, not a wraparound.