Class: Enumerable::Enumerator

Inherits:
Object
  • Object
show all
Defined in:
lib/backports/1.8.7/enumerator/next.rb,
lib/backports/1.8.7/enumerator/rewind.rb,
lib/backports/1.8.7/enumerator/with_index.rb

Instance Method Summary collapse

Instance Method Details

#next ⇒ Object

Raises:



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# File 'lib/backports/1.8.7/enumerator/next.rb', line 7

def next
  require 'generator'
  @generator ||= ::Generator.new(self)
  raise StopIteration unless @generator.next?
  @generator.next
end

#rewind ⇒ Object 



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# File 'lib/backports/1.8.7/enumerator/rewind.rb', line 5

def rewind
  require 'generator'
  @generator ||= ::Generator.new(self)
  @generator.rewind
  self
end

#with_index(offset = 0) ⇒ Object 



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# File 'lib/backports/1.8.7/enumerator/with_index.rb', line 5

def with_index(offset = 0)
  return to_enum(:with_index, offset) unless block_given?
  each do |*args|
    yield args.size == 1 ? args[0] : args, offset
    offset += 1
  end
end