Module: CompareBy::InstanceMethods

Defined in:
lib/compare_by.rb

Instance Method Summary collapse

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'lib/compare_by.rb', line 12

def <=>(other)
  attrs = self.class.class_variable_get(:@@comparison_attrs)
  if attrs
    vals = attrs.map { |attr_name| send(attr_name) }
    other_vals = attrs.map { |attr_name| other.send(attr_name) }

    vals <=> other_vals
  else
    super
  end
end

#eql?(other) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/compare_by.rb', line 24

def eql?(other)
  self == other
end

#hash ⇒ Object 



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# File 'lib/compare_by.rb', line 28

def hash
  attrs = self.class.class_variable_get(:@@comparison_attrs)
  if attrs
    attrs.map do |attr_name|
      send(attr_name)
    end.hash
  else
    super
  end
end