Re: [Boost-users] [mpl] Syntax error with BOOST_MPL_ASSERT

Subject: Re: [Boost-users] [mpl] Syntax error with BOOST_MPL_ASSERT
From: Christopher Schmidt (mr.chr.schmidt_at_[hidden])
Date: 2009-10-11 08:27:00

comment inline...

Jean-Louis Leroy schrieb:
> What's wrong with this ?
> 
> template<class Expected, class T>
> void check_placeholders(const T&) {
>   BOOST_MPL_ASSERT((is_same<typename T::placeholders, Expected>)); // *
boost::is_same
> }
> 
> struct Test {
>   typedef int placeholders;
> };
> 
> void f() {
>   check_placeholders<int>(Test());
> }
> 
> msvc9 complains about : error C2059: syntax error : ')' at the line 
> marked with a star. I have put much more complex things inside 
> BOOST_MPL_ASSERT though :-/
> 
> I use Boost 1.40.
> 
> J-L

-Christopher