Learn Hara

Hara is easiest to understand by using it. Run a form, inspect the value, make one change, and see what the running kernel does next.

The learning paths below begin with the same compact language and then move in different directions. You do not need to install anything for the first two.

01 · START HERE

First Contact

Six short experiments: read a form, shape data, write a function, preserve an old value, and meet protocols.

About 15 minutes · browser kernel 02 · THE BUILDER'S SKILL

Protocols for Builders

Learn why a small language can remain coherent as new values, providers, tools, and systems are added.

Interactive foundations · no framework required 03 · BUILD SOMETHING

Build Tic Tac Toe

Start from drawing-command data and finish with immutable state, pointer input, rendering, and a live game loop.

Six practical stages · live canvas 04 · GO DEEPER

Hara Foundations

Continue through persistent collections, atoms, iterators, promises, coroutines, bytes, and explicit I/O.

Seven connected lessons · complete runtime model

The sequence behind every path

ValuesGive information a shape. → FunctionsDescribe a transformation. → ProtocolsName what a part can do. → SystemsFit independent parts together.

Functions make things happen. Protocols make systems fit together.