"Jon Kalb" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
icrosoft.com...
> [...]
> Vandevoorde and Josuttis call it SFINAE, "substitution failute is not an
> error."
Ah, I've heard of this, but didn't realize what it was all about.
> In "C++ Templates: The Complete Guide" (Recommended), they give
> this example on pages 106-107:
>
> typedef char RT1;
> typedef struct {char a[2];} RT2;
> template<typename T> RT1 test(typename T::X const*);
> template<typename T> RT2 test(...);
>
> #define type_has_member_type_X(T) \
> (sizeof(test<T>(0) == 1)
This is cool. What compilers are known to support it?
Dave
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