As an example:
using Op = Eigen::VectorwiseOp<Eigen::Array<int, -1, -1, 0, -1, -1>, 0>;
using T = Op::const_iterator; // subvector_stl_iterator<const ...>
using U = decltype(std::declval<const Op&>().cbegin()); // subvector_stl_iterator<const ...>
using V = decltype(std::cbegin(std::declval<const Op&>())); // subvector_stl_iterator<...>
V should be the same as T, but isn't.
I guess we can just replace
iterator begin() const;
in VectorwiseOp.h by a const and non-const method (where only the non-const method returns a non-const iterator).
I need to test if that breaks anything, though.
Yeah, that should fix it. Let me know if there’s anything I can do.
Thank you for the report. Fixed:
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