<div dir="auto">I'm trying to learn Mercury, and I ran into some problems that I believe are because of partially instantiated data structures, which are currently unimplemented: <a href="http://mercurylang.org/information/doc-release/mercury_faq/Unimplemented.html#Unimplemented">http://mercurylang.org/information/doc-release/mercury_faq/Unimplemented.html#Unimplemented</a><div dir="auto"><br></div><div dir="auto">Is this functionality being worked on?  If so, what's the status?  If not, why not?  (Would it require extensive changes to existing systems?  Is it considered unimportant?  Is it intrinsically difficult?)  How much effort would it likely be to implement?</div><div dir="auto"><br></div><div dir="auto">Thanks,</div><div dir="auto">Matthew</div></div>