Class: Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/extended_hash_methods.rb

Instance Method Summary collapse

Instance Method Details

#invert_and_group ⇒ Object 



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# File 'lib/extended_hash_methods.rb', line 6

def invert_and_group
  self.values.uniq.map do |value|
    [value, keys_by_value(value)]
  end.to_h
end

#keys_by_value(value) ⇒ Object 



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# File 'lib/extended_hash_methods.rb', line 2

def keys_by_value(value)
  self.select { |_, v| v == value }.keys
end