Re: [Boost-users] [lambda] Exploring bind syntax.

21 Jul 2008

      AMDG

Robert Jones wrote:
...
int main( )
{
  typedef std :: vector Vec;
  using namespace boost :: lambda;

boost :: function fn = bind( & S :: methodOfS, _1 );
  Vec v;
  Vec :: iterator match;
match = find_if( v.begin( ), v.end( ), bind( fn, _1 ) != fn( * 
v.begin( ) ) ); // OK
match = find_if( v.begin( ), v.end( ), fn( _1 ) != fn( * v.begin( ) 
) ); // Fail
}
I find the line marked 'OK' compiles, but not the line marked 'Fail'. 
Isn't the
very point of Boost.Bind to enable this kind of syntax?
You're talking about boost::lambda::bind, not boost::bind.  They
are not the same thing.

...
Is there a better
way to write it than my 'Fail' line, but which will still compile?
You need to use the 'OK' line.   boost::function doesn't know about 
boost::lambda::bind.

In Christ,
Steven Watanabe