Re: [Boost-users] Can you compare boost::function objects?

On May 27, 2005, at 6:10 AM, Stuart Dootson wrote:

I'm not certain (from the documentation) whether see if two boost::function objects are equal (I tend to think not!).

Sounds like I need to fix the documentation.

The code below doesn't compile on VC7.1, raising an error about 4 ambiguous overloads of operator==

#include

int Flip() { return 2; }

int main(int,char**) { boost::function f1 = &Flip; boost::function f2 = &Flip; bool const areTheyEqual = (f1 == f2); }

Can someone confirm if this should/should not compile, please?

It should not compile. Comparison of two function<> objects is not implementable in genera (without compiler extensions or significant user pain). Doug