Class: SubNode

Inherits:

BinaryNode

• Object
• BinaryNode
• SubNode

Defined in:

lib/ast.rb

Instance Attribute Summary

Attributes inherited from BinaryNode

#left, #right

Instance Method Summary

• #evaluate ⇒ Object
• #initialize(left, right) ⇒ SubNode constructor

  A new instance of SubNode.

Constructor Details

#initialize(left, right) ⇒ SubNode

Returns a new instance of SubNode.

# File 'lib/ast.rb', line 31

def initialize(left, right)
  super(left,right)
end

Instance Method Details

#evaluate ⇒ Object

# File 'lib/ast.rb', line 35

def evaluate 
  @left.evaluate - @right.evaluate
end