- virtual int nops() const;
- virtual ex op(int const i) const;
- virtual ex & let_op(int const i);
- virtual ex operator[](ex const & index) const;
- virtual ex operator[](int const i) const;
- virtual bool has(ex const & other) const;
- virtual int degree(symbol const & s) const;
- virtual int ldegree(symbol const & s) const;
- virtual ex coeff(symbol const & s, int const n=1) const;
- virtual ex collect(symbol const & s) const;
+ virtual unsigned nops() const;
+ virtual ex op(int i) const;
+ virtual ex & let_op(int i);
+ 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;