Concepts? Template specialization depending on class functions?

[Ben Phillips]

In article <du751p$1imp$1 at digitaldaemon.com>, Ben Phillips says...
>
>Is it possible to determine whether a given class contains a specific member
>function?
>

>From reading the docs it seems like I should be able to do this using "is", but
the appropriate syntax is unclear and I can't seem to figure it out. Does "is"
make it possible to test of a class has a certain member function and, if so,
what is the correct syntax?