Class: CachingEnumerator

Inherits:
Enumerator
  • Object
show all
Defined in:
lib/caching_enumerator.rb,
lib/caching_enumerator/version.rb

Constant Summary collapse

VERSION = 
"0.0.1"

Instance Method Summary collapse

Constructor Details

#initialize(&block) ⇒ CachingEnumerator 



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# File 'lib/caching_enumerator.rb', line 2

def initialize(&block)
  @cache = []
  @enum = Enumerator.new(&block)

  super do |yielder|
    @cache.each do |person|
      yielder.yield person
    end

    begin
      loop do
        next_val = @enum.next
        @cache.push next_val
        yielder.yield next_val
      end
    rescue StopIteration
    end
  end
end

Instance Method Details

#reset ⇒ Object 



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# File 'lib/caching_enumerator.rb', line 22

def reset
  @cache = []
  @enum.rewind
  self.rewind
end