Re: [Boost-users] boost 1.32 breaks my code 2

gast 128 wrote:

Ok I have an example,

int f(int, int); struct X { int m_i; };

X x; int i = boost::bind(&f, 1, _1)(boost::bind(&KTstbX::m_i, _1)(x)); UNREF(i);

I guess the new boost does not return ref for members (in react on a previous email).

Yes, you are right. I don't quite see the point of the example, though... the inner bind is not a nested bind expression. Is this an oversimplified version? The problem is that bind( f, 1, _1 ) can't take an rvalue as a parameter. This hasn't changed. It's just that the second bind now returns the member by value by default. If you are using a reasonably conforming compiler, you can use bind<int&>(&KTstbX::m_i, _1) to get the reference.