Re: [Boost-users] [bind][lambda] overriding return value

21 Jul 2008

      AMDG

David Rodríguez Ibeas wrote:
...
Hi,
Is it possible to override/generate a return value? I want to 
connect a signal that has a bool return value to a method that has a 
void return type, generating always a true return.
class X
{
public:
   void f();
};
boost::signal< bool () > sgn;
X x;
sgn.connect( boost::bind( &X::f, &x ) ); // error, signal has bool 
return, method doesn't
Using lambda, you can use the comma operator.

sgn.connect((boost::lambda::bind(&X::f, &x), true))

In Christ,
Steven Watanabe