Hello, "clear() and destroy() functions almost duplicate each other. Looks like clear() must work as destroy(), so fix the clear() method and use it everywhere in code instead of destroy(). Make sure that everything works well, and tests pass." I have removed the destroy function [0]. I am ready for doing other tasks. I know from last year that the trie class needs a partial template specialization for Value = void in order to optimize the memory ussage of trie_set and trie_multiset. However, I think that this task is quite difficult and I would like to solve it later on when I gain some more experience with the project. If this is the easiest task that can be done I will start with it then. [0] https://github.com/cosminBoaca/boost.trie/commit/3ebcdf38d238919916a227273d8... Thank you, Cosmin