Class: SubNode

Inherits:

BinaryNode

Object
BinaryNode
SubNode

show all

Defined in:: lib/ast.rb

Instance Attribute Summary

Attributes inherited from BinaryNode

Instance Method Summary collapse

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

A new instance of SubNode.

Constructor Details

#initialize(left, right) ⇒ `SubNode`

Returns a new instance of SubNode.



55
56
57

# File 'lib/ast.rb', line 55

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

Instance Method Details

#evaluate ⇒ `Object`



59
60
61

# File 'lib/ast.rb', line 59

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