24 Jan
2012
24 Jan
'12
2:57 p.m.
Just on a first glance, looks like you're mistaking ::_1 (placeholder from Boost.Bind) for boost::mpl::_1 (placeholder from Boost.MPL). They're incompatible; try using the latter...?
- Jeff
Thanks, Jeff ! It works. But then my next question is why they are different and somehow incompatible even-though are both placeholders. Why we keep two different place holder if they do exactly a same functionality.