Ruby has evolved slowly language-wise compared to C++, or even Python. Most changes have been in libraries and interpreter / VM implementation. Updating your

Ruby has evolved slowly language-wise compared to C++, or even Python. Most changes have been in libraries and interpreter / VM implementation. Updating your knowledge from Ruby 1.8 (mid 2000s) to 3.x (current) takes little effort. But yes, sparse API documents were always a problem because a big chunk of the community was Japanese.