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<char*>( 0 );
if( foo != reinterpret_cast<char*>( 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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