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class_variable_defined?

obj.class_variable_defined?(symbol) â true or false

Instance Public methods

Returns true if the given class variable is defined in obj.

class Fred
  @@foo = 99
end
Fred.class_variable_defined?(:@@foo)    #=> true
Fred.class_variable_defined?(:@@bar)    #=> false

doc_ruby_on_rails

2015-04-19 02:41:05

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