virtual ex operator[](const ex & index) const;
virtual ex operator[](int i) const;
virtual bool has(const ex & other) const;
- virtual int degree(const symbol & s) const;
- virtual int ldegree(const symbol & s) const;
- virtual ex coeff(const symbol & s, int n = 1) const;
- virtual ex collect(const symbol & s) const;
+ virtual int degree(const ex & s) const;
+ virtual int ldegree(const ex & s) const;
+ virtual ex coeff(const ex & s, int n = 1) const;
+ virtual ex collect(const ex & s) const;
virtual ex eval(int level = 0) const;
virtual ex evalf(int level = 0) const;
virtual ex series(const relational & r, int order, unsigned options = 0) const;