Creates a new set containing the elements of the given enumerable object.

If a block is given, the elements of enum are preprocessed by the given block.

Source Code

# File set.rb, line 64
def initialize(enum = nil, &block) # :yields: o
  @hash ||= Hash.new

  enum.nil? and return

  if block
    enum.each { |o| add(block[o]) }
  else
    merge(enum)
  end
end