You can add "ruby" after 3 symbols to color.
[0 => 'value'] #array {'key' => 'value'} #hash 1+2=3 # int + int = int 1.2 + 2.3 = 3.3 # dec + dec = dec self.validate data #object.method parameter_date
Shows that the "array" there isn't really an array, but an array with a hash in it:
[0 => 'value'] # => [{0=>"value"}]
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You can add "ruby" after 3 symbols to color.
Shows that the "array" there isn't really an array, but an array with a hash in it: