Ruby: An Introduction Created by Yukihiro Matsumoto in 1993 (named after his birthstone) Pure OO language (even the number 1 is an instance of a class) - ppt download
Install Ruby on Rails on Raspberry Pi
Ruby for Perl Programmers
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Constants in C | Functions of Constants in C with Examples
Creating Raspberry Pi applications with Raylib and Ruby - Part II
Pi Constant | Pi Day | Know Your Meme
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