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Because libeigen does special work to adjust the memory alignment of all of its types, it has a special rule that says that in passing eigen types as arguments that they should always be pass-by-reference.
However I believe boost::bind implicitly passes by value.
My intuition is that using boost::bind with eigen types (and without using boost:ref) would violate Eigen’s pass-by-reference rule, and thus cause problems.
Can anyone confirm this?
boost::bindwill effectively pass arguments as values. Unless you wrap them withboost::(c)ref, then it would be just the wrapper which gets passed by value.