Reference

Quick-lookup reference material that doesn't fit neatly into a narrative page.

Pages in this section

• configuration.md — Environment variables, command-line flags, build switches.
• data-models.md — Core in-memory layouts: VALUE, RObject, RArray, RHash, RString, iseq, callinfo.
• dependencies.md — External libraries Ruby depends on.

For everything else, the canonical references are:

• The C API documentation in include/ruby/ (Doxygen).
• The Ruby class documentation at https://docs.ruby-lang.org/en/master/ (RDoc).
• The bug tracker: https://bugs.ruby-lang.org.
• The release notes: NEWS.md for the current dev branch, plus doc/NEWS/ for historical releases.