Class: MinusNode

Inherits:

UnaryNode

Object
UnaryNode
MinusNode

show all

Defined in:: lib/ast.rb

Instance Attribute Summary

Attributes inherited from UnaryNode

Instance Method Summary collapse

#evaluate ⇒ Object
#initialize(subTree) ⇒ MinusNode constructor

A new instance of MinusNode.

Constructor Details

#initialize(subTree) ⇒ `MinusNode`

Returns a new instance of MinusNode.



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# File 'lib/ast.rb', line 95

def initialize(subTree)
  super(subTree)
end

Instance Method Details

#evaluate ⇒ `Object`



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# File 'lib/ast.rb', line 99

def evaluate    
  $calc.memory-=subTree.evaluate
end