Class: Enginevib::Averager

Inherits:
Object
  • Object
show all
Defined in:
lib/enginevib/averager.rb

Overview

Defines the Averager class

Constant Summary collapse

AVERAGE_SAMPLE_SIZE = 
100

Instance Method Summary collapse

Constructor Details

#initialize(size = AVERAGE_SAMPLE_SIZE) ⇒ Averager

Returns a new instance of Averager.



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# File 'lib/enginevib/averager.rb', line 6

def initialize(size = AVERAGE_SAMPLE_SIZE)
  @size = size
  @nums = []
  @sum = 0.0
end

Instance Method Details

#<<(hello) ⇒ Object 



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# File 'lib/enginevib/averager.rb', line 12

def <<(hello)
  @nums << hello
  goodbye = @nums.length > @size ? @nums.shift : 0
  @sum += hello - goodbye
  self
end

#average ⇒ Object 



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# File 'lib/enginevib/averager.rb', line 19

def average
  @sum / @nums.length
end

#to_s ⇒ Object 



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# File 'lib/enginevib/averager.rb', line 23

def to_s
  average.to_s
end