Wenzel Jakob cbd16a8247 stl.h: propagate return value policies to type-specific casters (#1455) ... * stl.h: propagate return value policies to type-specific casters Return value policies for containers like those handled in in 'stl.h' are currently broken. The problem is that detail::return_value_policy_override<C>::policy() always returns 'move' when given a non-pointer/reference type, e.g. 'std::vector<...>'. This is sensible behavior for custom types that are exposed via 'py::class_<>', but it does not make sense for types that are handled by other type casters (STL containers, Eigen matrices, etc.). This commit changes the behavior so that detail::return_value_policy_override only becomes active when the type caster derives from type_caster_generic. Furthermore, the override logic is called recursively in STL type casters to enable key/value-specific behavior.		2018-07-17 16:56:26 +02:00
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pybind11	stl.h: propagate return value policies to type-specific casters (#1455)	2018-07-17 16:56:26 +02:00