Question

I’m trying to get “CMtoaPlugin::listArnoldNodes()” to return an “array” of strings

   std::vector<std::string> ArnoldNodes = CMtoaPlugin::listArnoldNodes();
   std::vector<std::string>::iterator it;

   for ( it=ArnoldNodes.begin() ; it < ArnoldNodes.end(); it++ )
   {
      printf("initialize shader %s\n", *it);
   }

but this is what i get, 2 entries, that’s correct but the content of the entry is not

initialize Arnold shader †¡/

initialize Arnold shader.

what am i doing wrong

Answer 1

Try it like this:

for (it = ArnoldNodes.begin() ; it != ArnoldNodes.end(); ++it)
{
    std::cout << "initialize shader " << *it << std::endl;
}

• printf doesn’t work with std::string, you need to use cout (or pass it it->c_str())
• In an iterator for-loop, it’s preferable to use it != vec.end() (since you only need to check for equality, not compare), and ++it to increment (post-increment can be less efficient for some iterators).