Class: FractionTree::Node

Inherits:
Object
  • Object
show all
Includes:
Comparable
Defined in:
lib/fraction_tree.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(n, d) ⇒ Node

Returns a new instance of Node.



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# File 'lib/fraction_tree.rb', line 220

def initialize(n,d)
  @numerator = n
  @denominator = d
  @weight = (d == 0 ? Float::INFINITY : Rational(@numerator, @denominator))
end

Instance Attribute Details

#denominator ⇒ Object

Returns the value of attribute denominator.



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# File 'lib/fraction_tree.rb', line 218

def denominator
  @denominator
end

#numerator ⇒ Object

Returns the value of attribute numerator.



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# File 'lib/fraction_tree.rb', line 218

def numerator
  @numerator
end

#weight ⇒ Object Also known as: to_r

Returns the value of attribute weight.



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# File 'lib/fraction_tree.rb', line 218

def weight
  @weight
end

Instance Method Details

#+(rhs) ⇒ Object 



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# File 'lib/fraction_tree.rb', line 248

def +(rhs)
  self.class.new(self.numerator+rhs.numerator, self.denominator+rhs.denominator)
end

#<=>(rhs) ⇒ Object 



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# File 'lib/fraction_tree.rb', line 233

def <=>(rhs)
  self.weight <=> rhs.weight
end

#==(rhs) ⇒ Object 



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# File 'lib/fraction_tree.rb', line 237

def ==(rhs)
  self.weight == rhs.weight
end

#eql?(rhs) ⇒ Boolean

Needed for intersection operations to work. blog.mnishiguchi.com/ruby-intersection-of-object-arrays shortrecipes.blogspot.com/2006/10/ruby-intersection-of-two-arrays-of.html

Returns:

  • (Boolean) 


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# File 'lib/fraction_tree.rb', line 244

def eql?(rhs)
  rhs.kind_of?(self.class) && weight == rhs.weight
end

#inspect ⇒ Object Also known as: to_s 



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# File 'lib/fraction_tree.rb', line 228

def inspect
  "(#{numerator}/#{denominator})"
end