happi/theBeamBook

happi/theBeamBook has 4,058 GitHub stars and 267 forks. GitHot measured 0 stars in 24 hours. Last checked 2026-11-08 15:38 UTC. Last push 2026-09-25.

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A description of the Erlang Runtime System ERTS and the virtual Machine BEAM.

4,058 stars 267 forks

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README.md

Original

The BEAM Book

The first-edition manuscript is in book.asciidoc, with examples in code/. Read it online or download the PDF.

Second-edition examples and companion notes are also available.

Build the first edition

Install Ruby, Bundler, Erlang, Java, Graphviz and rsync, then run:

bundle install
make pdf-a4 html

Outputs are beam-book-a4.pdf and site/index.html. Use make pdf-publish for the print PDF and make epub for EPUB.

Licence

The first edition and code examples use CC BY 4.0. The second-edition companion carries its own copyright and licence notices. Existing third-party notices apply to their respective files.

happi/theBeamBook

Measured star growth

README.md

The BEAM Book

Build the first edition

Licence

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