Re: [Boost-users] Using bind with function objects

Hi, bind makes copies of the given parameters and operates on them. If you want bind to operate on a reference of the given object, you should use boost::ref. struct Bar { Bar( Foo& foo_ ) : foo( foo_ ) { } void operator()( const char* s_ ) { bind<void>(boost::ref(foo), _1, 42)(s_); } Foo& foo; }; This results in: $ ./a.out Hallo, 42 Greetings, Stefan On Do, 2008-02-28 at 21:04 +0100, Olaf Peter wrote:

Thanks a lot, the wrong return type was stupid ...

...

struct Bar {

Bar( Foo& foo_ ) : foo( foo_ ) { }

void operator()( const char* s_ ) { bind<void>(foo, _1, 42)(s_); }

Foo& foo; };

That compiles for me in VC++ 8

yes, but I do not get the expected output, I was not carefully enough?

$ ./bind X, 11