No member named 'forward' in namespace 'std'

Question

In XCode, I recently made and tested a processing library that uses boost. I just set up a basic project in the IDE, coded away, and it builds fine.

I now want to us

Answer 1

Your project compiles as C++11 and is using a C++11 standard library (std::forward and the header are new). The original project appears to compile as C++03 with a C++03 standard library, so those new features are not available.