Re: [Boost-users] null_ptr?

Robert Dailey wrote:

Hi,

Does boost have some sort of null_ptr class that allows you to do portable NULL comparisons? For example, the following isn't portable:

char* foo = 0; if( foo != 0 ) { } if (foo) { } should be portable also

But this is portable:

char* foo = reinterpret_cast( 0 ); if( foo != reinterpret_cast( 0 ) ) { }

You could easily create a null_ptr class with a few global template operators to make this easy, so you could do this: I understand there are enough people who dislike if (foo) and if(!foo) that adding a "null" is going into c+0x I personally like the (foo) and (!foo) notation and think "needing" a "NULL" is pointless given the other holes in the language

char* foo = boost::null_ptr; if( foo != boost::null_ptr ) { }

Is there such a thing? Thanks. ------------------------------------------------------------------------

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