Class: RPNCalculator::Operation::Subtraction

Inherits:

Base

• Object
• Base
• RPNCalculator::Operation::Subtraction

Defined in:

lib/rpn-calculator/operation/subtraction.rb

Instance Method Summary

• #result ⇒ Object

Methods inherited from Base

#initialize, operate

Constructor Details

This class inherits a constructor from RPNCalculator::Operation::Base

Instance Method Details

#result ⇒ Object

# File 'lib/rpn-calculator/operation/subtraction.rb', line 6

def result
  return invalid_operation_result(operation_string) unless valid?

  Result::Operation.new(operation_string, operands.reduce(&:-))
end