A Symbol is a constant that is identified by a name without you having to give it a numeric value.
:hello :good_bye # With spaces and symbols :"symbol with spaces" # Ending with question and exclamation marks :question? :exclamation! # For the operators :+ :- :* :/ :== :< :<= :> :>= :! :!= :=~ :!~ :& :| :^ :~ :** :>> :<< :% :[] :[]? :[]= :<=> :===
Internally a symbol is represented as an Int32.
To the extent possible under law, the persons who contributed to this workhave waived
all copyright and related or neighboring rights to this workby associating CC0 with it.
https://crystal-lang.org/docs/syntax_and_semantics/literals/symbol.html