Contents

class Hash

  # Returns true or false whether the hash
  # contains the given keys.
  #
  #   h = { :a => 1, :b => 2 }
  #   h.has_keys?( :a )   #=> true
  #   h.has_keys?( :c )   #=> false
  #
  #   CREDIT: Trans

  def has_keys?(*check_keys)
    unknown_keys = check_keys - self.keys
    return unknown_keys.empty?
  end

  # Returns true if the hash contains
  # _only_ the given keys, otherwise false.
  #
  #   h = { :a => 1, :b => 2 }
  #   h.has_only_keys?( :a, :b )   #=> true
  #   h.has_only_keys?( :a )       #=> false
  #
  #   CREDIT: Trans

  def has_only_keys?(*check_keys)
    unknown_keys = self.keys - check_keys
    return unknown_keys.empty?
  end

end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
facets-2.3.0	lib/core/facets/hash/has_keys.rb
facets-2.2.0	lib/core/facets/hash/has_keys.rb
facets-2.2.1	lib/core/facets/hash/has_keys.rb