libleva/expression.h
00001 #pragma once 00002 00008 class Expression 00009 { 00010 protected: 00012 double _value; 00013 00015 bool _isEvaluated; 00016 00022 Expression(); 00023 00029 Expression(double value); 00030 public: 00036 double value(); 00037 00041 virtual ~Expression(); 00042 00050 virtual double eval() = 0; 00051 00052 };
