Jason Rhinelander b57281bb00 Use rvalue subcasting when casting an rvalue container ... This updates the std::tuple, std::pair and `stl.h` type casters to forward their contained value according to whether the container being cast is an lvalue or rvalue reference. This fixes an issue where subcaster casts were always called with a const lvalue which meant nested type casters didn't have the desired `cast()` overload invoked. For example, this caused Eigen values in a tuple to end up with a readonly flag (issue #935) and made it impossible to return a container of move-only types (issue #853). This fixes both issues by adding templated universal reference `cast()` methods to the various container types that forward container elements according to the container reference type.		2017-07-05 12:27:14 -04:00
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pybind11	Use rvalue subcasting when casting an rvalue container	2017-07-05 12:27:14 -04:00