I presume introspection is more portable.
I'm getting the error in forward1.hpp "cannot open include file: 'boost/introspection/detail/object_call_spec.hpp'". This file does not appear to be on the sandbox.
On 9 March 2010 13:29, Igor R
<boost.lists@gmail.com> wrote:
> Can I ask inside a template function if a member exists on a parameter of
> the function.
>
> For example.
>
> template <typename T>
> void func(T in)
> {
> exists(in, foo);
> }
>
> Where the "exists" line would return true if "in" had a member "foo"
> otherwise false.
Note, however, that "introspection" libarary cannot detect an inherited member.
If you use MSVC and don't need a portable code, you can use
__if_exists statement:
http://msdn.microsoft.com/en-us/library/x7wy9xh3(VS.80).aspx