- subs() can be used to substitute functions, tensors and indexed objects

[ginac.git] / ginac / idx.h

diff --git a/ginac/idx.h b/ginac/idx.h
index aa7f94e1fdf3fa89ae8846e96de0b04db5855854..a54ad7c339c59347dfcda870cd5bad47ecceef18 100644 (file)
--- a/ginac/idx.h
+++ b/ginac/idx.h
@@ -51,6 +51,8 @@ public:
        void printtree(std::ostream & os, unsigned indent) const;
        void print(std::ostream & os, unsigned upper_precedence=0) const;
        bool info(unsigned inf) const;
+       unsigned nops() const;
+       ex & let_op(int i);
 protected:
        ex subs(const lst & ls, const lst & lr) const;