Class: Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/vapir-common/external/core_extensions.rb

Instance Method Summary collapse

Instance Method Details

#select_keys(*keys) ⇒ Object

returns a hash whose keys are the intersection of the keys of this hash and the keys given as arguments to this function. values are the same as in this hash.



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# File 'lib/vapir-common/external/core_extensions.rb', line 40

def select_keys(*keys)
  keys.inject(self.class.new) do |hash,key|
    self.key?(key) ? hash.merge(key => self[key]) : hash
  end
end