• Advertisement
Sign in to follow this  

enable function if class has variable

This topic is 3735 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

ive got a template class which takes structs as template parameters.. if the structs that i send in has a certain variable id like to enable a function... is there any way to do this with something similar to type-to-type mapping or boost::enable_if this is how it looks template<class T> struct elemenet { // if T::id then enable this function const T& GetByID() {} };

Share this post


Link to post
Share on other sites
Advertisement
Actually, you can just do it. A member function of a templated class is only instantiated if it's actually called (or if you go out of your way to do other things which instantiate it, none of which you are doing).

Share this post


Link to post
Share on other sites
Sign in to follow this  

  • Advertisement