I have been using smallvec successfully, and it's been a great memory saver. I also use the get_size library to report how much (heap) memory my data structures use. This doesn't work for SmallVec's, or data stucutres which include them.

Is it possible to add support to GetSize to smallvec? Maybe behind a feature flag? get_size allows one to implement it for external types, do you have any tips on how I could implement GetSize for a SmallVec?