Never mind, I am still learning. I found the ex_to converter and now everything is working. Marko Am 10.02.23 um 00:34 schrieb Marko Riedel:
Hi all,
I have a set of custom objects that is declared like this:
struct cindsym_is_less { bool operator() (const cindsymbol &lh, const cindsymbol &rh) const { return lh.compare(rh) < 0; } };
typedef std::set<cindsymbol, cindsym_is_less> cindsymset;
Now I want to collect all custom objects that appear in an expression tree into this kind of set. I tried this:
void indets_recurse(ex src, cindsymset & coll) { if(is_a<add>(src) || is_a<mul>(src) || is_a<power>(src)){ for(size_t idx = 0; idx < src.nops(); idx++) indets_recurse(src.op(idx), coll); return; }
if(is_a<cindsymbol>(src)){ coll.insert(src); } }
However this will produce the error "no matching function call" because src is an expression and not a cindsymbol. I know that I have my kind of symbol because is_a<cindsymbol> returned true. How can I get at the symbol wrapped in the expression?
Best regards,
Marko _______________________________________________ GiNaC-list mailing list GiNaC-list@ginac.de https://www.ginac.de/mailman/listinfo/ginac-list