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Io

Io

Io is a prototype-based programming language that first appeared in 2002.

Paradigm: Object-oriented
First appeared: 2002
Reference: Wikipedia article

Not yet on the curriculum

There are no Io lessons yet. The ideas that carry across every language, such as variables, control flow and functions, are covered in Fundamentals. For a full track to see how lessons are structured, start with Python.

Open source tutorials, written against specific language versions.

Source on GitHub