Hashes and Symbols

Symbol Syntax

Symbols always start with a colon (:). They must be valid Ruby variable names, so the first character after the colon has to be a letter or underscore (_); after that, any combination of letters, numbers, and underscores is allowed.

Make sure you don't put any spaces in your symbol nameā€”if you do, Ruby will get confused.

:my symbol # Don't do this!
:my_symbol # Do this instead.
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