Class: Hash

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

Instance Method Summary collapse

Instance Method Details

#only(*selected_keys) ⇒ Object

Returns a hash that only contains keys that are passed in selected_keys. This is different from Hash#select, since that method returns an array of arrays.



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# File 'lib/hash_extension.rb', line 4

def only(*selected_keys)
  cpy = self.dup
  keys.each { |key| cpy.delete(key) unless selected_keys.map(&:to_s).include?(key) }
  cpy
end