Contents

module Fossilize
  class RingBuffer < Array

    alias_method :array_push, :push
    alias_method :array_element, :[]

    def initialize(size)
      @ring_size = size
      super(size)
    end

    def push(element)
      if length == @ring_size
        shift # loose element
      end
      array_push element
    end

    # Access elements in the RingBuffer
    #
    # offset will be typically negative!
    #
    def [](offset = 0)
      return self.array_element(- 1 + offset)
    end
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
fossilize-1.1.1	lib/fossilize/ring_buffer.rb
fossilize-1.1.0	lib/fossilize/ring_buffer.rb
fossilize-1.0.0	lib/fossilize/ring_buffer.rb