Very much. In many cases a single variadic replaces tens of thousands of lines of code, often machine generated, greatly simplifying code bases and speeding up

Very much. In many cases a single variadic replaces tens of thousands of lines of code, often machine generated, greatly simplifying code bases and speeding up compilation. It also immediately obsoleted the whole of boost.mpl. Together with lambda they are probably my favourite feature of c++11. Span is nice especially as a vocabulary type, but it wasn't hard to implement something functionally similar and in practice most of codebases already did.