Class: Nerve::RingBuffer

Inherits:
Array
  • Object
show all
Defined in:
lib/nerve/ring_buffer.rb

Instance Method Summary collapse

Constructor Details

#initialize(size) ⇒ RingBuffer

Returns a new instance of RingBuffer.



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# File 'lib/nerve/ring_buffer.rb', line 6

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

Instance Method Details

#[](offset = 0) ⇒ Object

Access elements in the RingBuffer

offset will be typically negative!



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# File 'lib/nerve/ring_buffer.rb', line 26

def []( offset = 0 )
  return self.array_element( - 1 + offset )
end

#array_element ⇒ Object 



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# File 'lib/nerve/ring_buffer.rb', line 4

alias_method :array_element, :[]

#array_push ⇒ Object 



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# File 'lib/nerve/ring_buffer.rb', line 3

alias_method :array_push, :push

#average ⇒ Object 



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# File 'lib/nerve/ring_buffer.rb', line 11

def average
  self.inject(0.0) { |sum, el| sum + el } / self.size
end

#push(element) ⇒ Object 



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# File 'lib/nerve/ring_buffer.rb', line 15

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