From: John Maddock (john_at_[hidden])
Date: 2004-01-10 06:11:10
> I'm fixing the compilation problems with VC7.1 for the recently accepted
> Numeric Conversions Library and found the following:
> I erroneously used a construct of the follwing form:
> typedef typename boost::is_same<T,S>::type is_trivial ;
> typedef typename boost::mpl::if_<is_trivial,ABC,DEF>::type type ;
> The error is in the "::type" after is_same<>; mpl::if_ can take the traits
> as is, without the "::type"
> However, that code did pass many of the other compilers, so that "::type"
> does exist in some cases.
> Is this a bug in the VC7.1 version of "is_same"? That is, was it intended
> have "::type"?
Not yet, the ::type member is not part of the documented interface, but we
do need to deal with that sometime.
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