Re: [Boost-users] logical_and, boost::bind, and boost::function

On Aug 10, 2005, at 11:44 AM, Simmons, Aaron wrote:

        function funcFoo  = bind(&test::foo, this);         function funcBar  = bind(&test::bar, this);         function funcTest1= bind(logical_and<bool>(), funcFoo, funcBar);

Alan's post made me realize what's happening. Indeed, this last bind() doesn't know that funcFoo and funcBar are functions that it should call. You can tell it to consider them as functions by calling bind() on them: function funcTest1= bind(logical_and<bool>(), bind(funcFoo), bind(funcBar)); Now it should work fine. Whether it's actually clearer or not is for you to decide, but here's one warning: each call through a boost::function object is like a virtual function call. So by turning each call to one boost::function object into a call through 3 boost::function objects, there will be a performance penalty. Doug