Re: [boost] Giving names to formal parameters of lambda expressions: a named placeholder trick.

shunsuke wrote:

Though Eric states that even remove_cv_ref makes compiling slower, it's worth a try.

There is a context to that statement. Proto is used to build TMP-heavy libraries, and in normal operation causes recursive template instantiations -- lots of them. If I can save one template instantiation when calculating the return type of a transform, it's a big win because that savings get multiplied out and becomes measurable. That doesn't appear to be the case here, does it? Have you benchmarked compile times? -- Eric Niebler Boost Consulting www.boost-consulting.com