Episode #491 Special Variables Part 1: Process State

Sooner or later, you'll run across Ruby's "Perl-style" special variables: $!, $$, $_, $&, $:, and all their kin. They may look like a cat was dancing on the keyboard, but understanding them can sometimes be the key to understanding the function of other people's code. And in some cases, they can be quite handy... In this, the first episode of a series, you'll meet a few of the more prominent members of the special variable family.

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