-----Original Message----- From: boost-users-bounces@lists.boost.org [mailto:boost-users- bounces@lists.boost.org] On Behalf Of Daniel James Sent: 06 February 2010 17:27 To: boost-users@lists.boost.org Subject: Re: [Boost-users] PP: BOOST_PP_CAT concatenate an argument with a whitespace

On 6 February 2010 17:13, Hicham Mouline wrote:

...

Hi,

BOOST_PP_CAT( MACRO1, MACRO2 );

MACRO1 expands to double MACRO2 expands to x

BOOST_PP_CAT( MACRO1, MACRO2 ); therefore expands to        doublex;

I am trying to get the statement

double x;

Can't you just write MACRO1 MACRO2?

Daniel Yes, the BOOST_PP_CAT was inside a BOOST_PP_IF so it confused as to whether just writing the space there would work. It did.

Thanks,