Determining if type T is a subclass of X

[flopbucket]

Hi,

Is there a way using templates at compile time to determine if a type
T is a subclass of another type?

Basically I want to chose one struct if it is a subclass, or another
struct if it is not.

 

[Victor Bazarov]

Is there a way using templates at compile time to determine if a type
T is a subclass of another type?

Basically I want to chose one struct if it is a subclass, or another
struct if it is not.

Yes, IIRC. Check "is_derived_from" (or something like that) in Boost.

V

 

[Sylvester Hesp]

flopbucket wrote :

Hi,

Is there a way using templates at compile time to determine if a type
T is a subclass of another type?

Basically I want to chose one struct if it is a subclass, or another
struct if it is not.

Yes there is, see boost::is_base_of

http://www.boost.org/doc/html/boost_typetraits/reference.html#boost_typetraits.is_base_of

- Sylvester

 

[Vaibhav]

flopbucket wrote :




Yes there is, see boost::is_base_of

http://www.boost.org/doc/html/boost_typetraits/reference.html#boost_t...

- Sylvester

Is it possible to do this without using Boost library functions ???

 

[Andre Kostur]

Is it possible to do this without using Boost library functions ???

Sure. Look at how Boost did it... do the same thing.

 

[vallee.aurelien]

Hi,

Is there a way using templates at compile time to determine if a type
T is a subclass of another type?

Basically I want to chose one struct if it is a subclass, or another
struct if it is not.

Look at "Modern C++ Design" - Alexandrescu
The whole process is explained (and used in Loki).