Method: Immutable::Vector#uniq

Defined in:
lib/immutable/vector.rb

#uniq(&block) ⇒ Vector

Return a new Vector with no duplicate elements, as determined by #hash and #eql?. For each group of equivalent elements, only the first will be retained.

Examples:

Immutable::Vector["A", "B", "C", "B"].uniq      # => Immutable::Vector["A", "B", "C"]
Immutable::Vector["a", "A", "b"].uniq(&:upcase) # => Immutable::Vector["a", "b"]

Returns:



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# File 'lib/immutable/vector.rb', line 537

def uniq(&block)
  array = self.to_a
  if block_given?
    if array.frozen?
      self.class.new(array.uniq(&block).freeze)
    elsif array.uniq!(&block) # returns nil if no changes were made
      self.class.new(array.freeze)
    else
      self
    end
  elsif array.frozen?
    self.class.new(array.uniq.freeze)
  elsif array.uniq! # returns nil if no changes were made
    self.class.new(array.freeze)
  else
    self
  end
end