Class variables in Ruby have a bad name. It’s true, they are considered harmful, borderline evil. So why the bad rap?
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Class Variables – A Ruby Gotcha
Dave is a web application developer residing in sunny Glasgow, Scotland. He works daily with Ruby but has been known to wear PHP and C++ hats. In his spare time he snowboards on plastic slopes, only reads geek books and listens to music that is certainly not suitable for his age.