15 struct Parametric_symbol {
16 Symtables*symtables_; // indirection
20 Parametric_symbol(Symtables*s) { symtables_ = s; }
21 Symbol eval(String args1) const; // convenience
22 Symbol eval(String args1,String arg2) const; // convenience
23 virtual Symbol eval(svec<String> args)const =0;
24 virtual ~Parametric_symbol(){}