Class: Fathom::MCNode

Inherits:
Node
  • Object
show all
Defined in:
lib/fathom/node/mc_node.rb

Instance Attribute Summary collapse

Attributes inherited from Node

#description, #distribution, #name, #values

Instance Method Summary collapse

Methods inherited from Node

#add_child, #add_parent, #children, #inspect, #name_sym, #parents, #register_child, #register_parent, #simple_inspect

Constructor Details

#initialize(opts = {}, &block) ⇒ MCNode

Returns a new instance of MCNode.

Raises:

  • (ArgumentError) 


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# File 'lib/fathom/node/mc_node.rb', line 7

def initialize(opts={}, &block) 
  super(opts)
  @value_description = opts[:value_description]
  @value_description ||= block if block_given?
  raise ArgumentError, "Must provide a value_description from either a parameter or by passing in a block" unless
    @value_description
end

Instance Attribute Details

#samples_taken ⇒ Object (readonly)

Returns the value of attribute samples_taken.



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# File 'lib/fathom/node/mc_node.rb', line 4

def samples_taken
  @samples_taken
end

#value_description ⇒ Object

Returns the value of attribute value_description.



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# File 'lib/fathom/node/mc_node.rb', line 5

def value_description
  @value_description
end

Instance Method Details

#fields ⇒ Object 



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# File 'lib/fathom/node/mc_node.rb', line 29

def fields
  self.children.map {|c| c.name_sym}.compact
end

#process(n = 10_000) ⇒ Object 



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# File 'lib/fathom/node/mc_node.rb', line 15

def process(n=10_000)
  @samples_taken, @samples = n, {}
  @samples_taken.times do
    result = value_description.call(self)
    store(result)
  end
  assert_nodes
end

#reset! ⇒ Object 



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# File 'lib/fathom/node/mc_node.rb', line 24

def reset!
  @samples_taken, @samples = nil, {}
  @samples_asserted = false
end