Web Reference: Jun 7, 2022 · Like Perl, Bash, Python, and C Shell, Ruby uses the hash symbol (also called Pound Sign, number sign) for comments. Everything from the hash to the end of the line is ignored when the program is run by Ruby. For example, here's our hello_world.rb program with comments. puts 'Hello, world!' Oct 3, 2019 · Ruby is a dynamic, reflective, object-oriented, general-purpose programming language. Hello World the program is the most basic and first program when we start a new programming language. Playing with Ruby code in interactive sessions like this is a terrific way to learn the language. Open up IRB (which stands for Interactive Ruby). If you’re using macOS open up Terminal and type irb, then hit enter. If you’re using Linux, open up a shell and type irb and hit enter.
YouTube Excerpt: How to Become a Self-Taught Programmer: https://play.google.com/store/books/details?id=2-z8CwAAQBAJ 如何自學程式 ...
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